electronles

Elelctronics-1962-03-09
A McGraw-Hill Publication 75 Cents

March 9, 1962

electronles

Inspecting repeater amplifiers for undersea telephone cable (below) p82

INTERNATIONAL IRE SPECIAL . . .

dia

it

Engineering highlights of the convention;

the recruiting climate; preview of exhibits and exhibitors

50 KG TO 40 KIVIC

fERSATILE GENERATORS, OSCILLATORS

LSO DRIVE

FREQUENCY DOUBLER SETS

1-p) 626A/628A shf Signal Generators
Instruments bringing high power, wide range, convenience and accuracy to the 10 to 21 KMC range. Frequencies, output voltage directly set and read. Output 10 to 20 db better than previous spot-frequency sets; SWR better than 1.2 at 0 dbm and lower. High power output provides excellent drive for the # 938A/940A Frequency Doubler Sets. Internal pulse, FM or square wave modulation; also external pulsing or FM'ing. # 626A, 10 to 15.5 KMC, $3,400.00; 628A, 15 to 21 KMC, $3,400.00.
680 Series Sweep Oscillators
Six models offering electronic sweeping for greater flexibility, simplified operation; range from 1to 18.0 KMC. 686C, 8.2 to 12.4 KMC, H01-
e e 686C, 7to 11 KMC and 687C, 12.4 to 18.0 KMC, useful for driving e Frequency Doubler Sets. 682C 1to 2KMC, $3,090.00; # 683C, 2to 4 e KMC, $3,000.00; 684C, 4.0 to 8.1 KMC, $2,900.00 # 686C, $2,900.00;
H01-686C, $3,000.00; # 687C, $3,400.00.

Instrument
e 606A e 608C
cho 608D
e 612A

Frequency Range 50 KC to 65 MC
10 to 480 MC 10 to 420 MC 450 to 1,230 MC

Characteristics

Output 0.1 gV to 3 v. Full feedback loop, low distortion

Output 0.1 p.v to 1 y into 50 ohm load. AM, pulse, or CW modulation. Direct calibration

Output 0.1 µv to 0.5 v. Incidental FM less than 0.001%

Output 0.1 µV to 0.5 or square wave

y into 50 ohm load. AM, pulse, modulation. Direct calibration

CW

Price $1,350.00 A
1,100.00 a 1,200.00 B 1,300.00 ·

iy 614A

800 to 2,100 MC

Output

0.1 or

µFvM tmoo0d.u22la3tiIo/ ni.ntDoi r5e0ct ochamliblroaatdi.onPulse,

CW

1,950.00111

41) 6168

1,800 to 4,200 MC

Output

0.1 or

µFvM tm o o0d.2u2la3tiyoni.ntDoi r5e0ctochamlilboraadt.ionPulse,

CW

1,950.00 ·

00 618B

3,800 to 7,600 MC

Output 0.1 eiv to 0.223 y into 50 ohm load. Pulse, CW FM or square wave mo dulati on. Di rect calibration

2,250.00 a

iSy 620A
e 626A
628A

7,000 to 11,000 MC 10 to 15.5 KMC 15 to 21 KMC

Output 0.1 µV to 0.223 y into 50 ohm load. Pulse, FM or square wave modulation. Direct calibration
Output 10 dbm to --90 dbm. Pulse, FM, or square wave modulation. Direct calibration
Output 10 dbm to --90 dbm. Pulse, FM, or square wave modulation. Direct calibration

2,250.00. 3,400.00B 3,400.00 mi

.1 Rack mounted instruments $15.00 less. ·Rack mounted instruments $20.00 additional.

Data subject to change without notice. Prices f.o.b. factory.

HEWLETT-PACKARD COMPANY

1051 Page Mill Road Cable "HEWPACK"

Palo Alto, California, U.S.A. DAvenport 6-7000

HEWLETT-PACKARD S. A.

Rue du Vieux Billard No. 1

Geneva, Switzerland

Cable "HEWPACKSA"

Tel. No. (022) 26. 43. 36

Sales representatives in all principal areas

Now! GESINgEiuRA gTaEs E
TO 40 KWIC
with these new, inexpensive

For convenient, economical, reliable signal generation to 40 KMC, use these new le Frequency Doubler Sets and either your own existing signal sources or one of the dependable, bench-proven 4 signal generators on
the next pages. .he Model 938A supplies power from 18 to 26.5 KMC when driven by a9 to 13.25 KMC source; 4 Model 940A supplies power from 26.5 to 40 KMC when driven by a 13.25 to 20 KMC source.
The le 938A and 940A have the same output versatility as the driving source. These broadband instruments accept cw, pulsed or swept input signals from signal generators, swept signal sources or klystrons.
Each contains abroadband crystal-harmonic generator, plus a dual rotary vane attenuator, for generating and accurately setting the output level 0to --100 dbm. Output power depends on input power and is typically 0.5 to 1.0 mw when the driving source is an 4 626A or 628A Signal Generator or an 4 686A Sweep Oscillator. Output power is known, even though an uncalibrated signal source is used, since the output monitor is accurate to -± 1to -± 2db, depending on model and frequency. 4 938A/940A conversion loss is approximately 17 db at 10 mw input. Maximum input power 200 mw, saturation output 2mw. Attenuator accuracy ± 2% of reading or 0.2 db (whichever is greater). Attenuator range 100 db; output SWR less than 1.2 at 10 db or more attenuation. Sturdy construction permits signal source to be mounted on top of Doubler Set, presents output at convenient bench level. 4 938A, $1,500.00;
4 940A, $1,500.00.

Check these Precision
:te

SIGNAL GENERATORS

ACCURATE SIGNALS-
· 606A Standard Signal Generator 50 KC to 65 MC
Output adjustable from 3yfull range to 0.1 or rms (+23 to --120 dbm). Feedback assures power into a50 ohm load constant within -± 1db over the frequency range. Reliable internal crystal calibrator permits checking points at 100 KC and 1MC intervals with an error
e of less than 0.01 %. Very low distortion, broad modulating capabili-
ties. Typical speed, ease of operation. # 606A, $1,350.00.
VHF SIGNAL GENERATORS
· 608D-10 to 420 MC
Highest stability, low incidental FM and frequency drift. Calibrated output 0.1 itv to 0.5 y throughout range. Built-in crystal calibrator provides frequency check accurate within 0.01% each 1 and 5MC. Master-oscillator, buffer and output amplifier circuit design. Direct calibration, ideal for aircraft communications equipment testing. # 608D, $1,200.00.
 608C--vhf Signal Generator
High power (1 ymax.), stable, accurate generator. 10 to 480 MC. Ideal for testing receivers, amplifiers, driving bridges, slotted lines, antennas, etc. # 608C, $1,100.00.
UHF SIGNAL GENERATORS
 612A-450 to 1,230 MC
Same high output power, low incidental FM, broad modulation capabilities as # vhf signal generators. Frequency, output directly set on large precisely calibrated dials. # 612A, $1,300.00.
· 614A-800 to 2,100 MC
Easy to use, direct-reading, one-dial frequency control, high stability and accuracy. Ideal for measuring receiver sensitivity, signalnoise ratio, conversion gain, SWR, transmission line characteristics. # 614A, $1,950.00.
1p-),616B-1,800 to 4,200 MC
Ruggedly built, compact to save bench space, offers same # precision, ease of operation, compactness of the other fÈ uhf instruments.
616B, $1,950.00.
SHIF SIGNAL GENERATORS · 618B-3,800 to 7,600 MC spDi 620A-7,000 to 11,000 MC
These instruments provide the simple, versatile operation and varied pulsing capabilities common in # signal generators to the lower regions of the shf range. The 618B and 620A may be synchronized with an external sine wave or with positive or negative pulse signals, as may other # signal generators. # 618B, $2,250.00; # 620A, $2,250.00.

March 0, 1962
electronics A McGraw-Hill Publication 75 Cents

W. W. MacDONALD, Editor
J. M. CARROLL, Managing Editor SENIOR EDITORS: Samuel Weber, George W. Sideris. SENIOR ASSOCIATE EDITORS: William E. Bushor, Michael F. Wolff. ASSOCIATE EDITORS: Michael F. Tomaino, Sylvester P. Carter, William P. O'Brien, John F. Mason, Thomas Emma, Sy Vogel, Leslie Solomon, M. M. Perugini, George J Flynn, Laurence D. Shergalis. ASSISTANT EDITORS: Nilo Lindgren, Stanley Fraud, Stephen B. Gray, Roy J. Bruun, George V. Novotny, Leon H. Dulberger. REGIONAL EDITORS: Harold C. Hood (Pacific Coast, Los Angeles), Thomas Maguire (New England, Boston), Cletus M. Wiley (Midwest, Chicago). ART DIRECTOR: Harry Phillips; Howard R. Berry. PRODUCTION EDITOR: John C. Wright, Jr. EDITORIAL ASSISTANTS: Gloria J. Meurer, Bernice Duffy, Lorraine Rossi, Virginia T. Bastian, Lynn Emery, Laura W. Smith, Bette H. Snyder, Rosemary Abbruzzese, Judy Haskins, Ann Mella. FOREIGN NEWS BUREAU: Director, John Wilhelm, Alyne Elias. London-- John Shinn, Derek Barlow, Nicholas Landon. Bonn--Peter Forbath, James Morrison, Silke McQueen. Paris -- Robert Farrell, Arthur Erikson. Milan-- Gene DiRaimondo. Mexico City -- Bruce Bendow. Rio de Janeiro--Leslie Warren. Moscow -- Stewart Ramsey. Tokyo -- Richard Halloran, Charles Cohen, John Yamaguchi.
JAMES GIRDWOOD, Publisher

,..+, ,e,eNive-.,s·..i,,,

,ire , .·. Err,
«

0 -n

SPECIAL

GOLD-PLATED AMPLIFIERS for a trans-Atlantic telephone

cable. Standard Telephones and Cables Ltd. plates all major

metal surfaces to prevent growth of whiskers. Whiskers

could cause short circuits during the long, unattended life of

the repeaters. See p

COVER

* COMPONENTS AND MODULES. Previews of what many

manuacturers will be introducing at the IRE Show. New prod-

ucts range from tubes through logic building blocks. One firm

is showing a thin-film Hall effect voltage generator

29

* INSTRUMENTATION AND SUBSYSTEMS. Roundup of

typical test equipment, recorders, signal sources and

other gear being displayed this month in the New York Coli-

seum. Typical of recent developments is a cro that shows tran-

sient waveforms in full

32

* GOLDEN ANNIVERSARY BANQUET. The IRE's six top

awards will be presented. This year, a Scot wins the Medal of

Honor

35

* JOB-HUNTING at the Show? Here's a rundown On the kind of engineers recruiters want and how much they'll probably offer. There is less demand for recent graduates, more for specialists 36

* ENGINEERING HIGHLIGHTS of the 1962 IRE Convention.

Thirteen selected papers cover 3-D solid-state displays, micro-

wave computers, electro-optical circuits, biological power sup-

plies, semiconductors, superconductors, thermoelectrics, elec-

tronically-steerable antennas, new microwave tubes, atomic

weather stations and electrostatic recording. These papers look

ahead into fields that will be of increasing importance in our

profession's next half century

51

SEMICONDUCTOR PLASMAS: Using Their Instability Char-

acteristics. Did you know that plasmas may be immobile as

well as mobile? Solid materials like germanium and silicon

exhibit characteristics similar to those of gaseous plasmas,

'leading to new components like the oscillistor. This tutorial

· article provides a basic background in important work that

should have interesting uses in millimeter-wave electronics.

M. Glicksman

56

Contents continued

electronics

March 9, 1962

Volume 35 No. 9

Published weekly, with Electronics Buyers' Guide and Reference issue, as part of the subscription, by McGraw-Hill Publishing Company, Inc. Founder: James H. McGraw (1860-1948).
Indexed Annually in Buyers' Guide and Reference issue.

Title

registered U.S. Patent Office;

C Copyright 1962 by McGraw-Hill

Publishing Co., Inc. All rights re-

served, including the right to repro-

duce the contents of this publication,

in whole or in part.

Executive, editorial, circulation and advertising offices McGraw-Hill Building, 330 West 42nd Street, New York 36, N. Y. Telephone Longacre 4-3000. Teletype TWX N.Y. 1-1636. Cable McGrawhill, N. Y. PRINTED IN ALBANY, N. Y.; second class postage
paid at Albany, N. Y.

OFFICERS OF THE PUBLICATIONS DIVISION: Nelson L. Bond, President; Shelton Fisher, Wallace F. Traendly, Senior Vice Presidents; John R. Callaham, Vice President and Editorial Director; Joseph H. Allen, Vice President and Director of Advertising Sales; A. R. Venezian, Vice President and Circulation Coordinator; Daniel F. Crowley, Vice President and Controller.

OFFICERS OF THE CORPORATION: Donald C. McGraw, President; Hugh J. Kelly, Harry L. Waddell, Executive Vice Presidents; L. Keith Goodrich, Executive Vice President and Treasurer; John J. Cooke, Vice President and Secretary.
Subscriptions are solicited only from those actively engaged in the field of the publication. Position and company connection must be indicated on orders. Subscription rates: United States and Possessions, $6.00 one year; $9.00 two years; $12.00 three years. Canada, $10.00 one year. All other countries $20.00 one year. Single Copies, United States and Possessions and Canada 751. Single copies all other countries $1.50.
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Postmaster: Please send Form 3579 to Fulfillment Manager, Electronics, 330 West 42nd Street, New York 36, New York.

ABC
Audited Paid Circulation
2

CONTENTS continued

VARACTOR DIODE CAPACITANCE. Dynamic test method uses

sawtooth bias waveform so variation of varactor diode capac-

itance can be measured as a function of applied voltages. For

quick and convenient readout, waveforms are displayed on an

oscilloscope. W. Jasinski

60

POWER SUPPLY Uses Switching Preregulation. Series solid-state

switch is regulating element of a variable-voltage power supply.

Output is controlled by switching frequency. The circuit improves

transient response, saves weight and does not short-circuit

62

REFERENCE SHEET: Reducing Distortion in Diode Detectors.

How to trade off carrier level and modulation percentage for

optimum results. Solution is given in graphical form. P. Flem-

ing, Jr.

66

DEPARTMENTS

* Crosstalk. It's an International Convention

3

Comment. Wasted Manpower? Processing PC

Boards

4

Electronics Newsletter. Thin-Film Devices Give

30 to 40-Db Power Gain

7

Washington Outlook. FAA to Spend $656 million

more in five years

12

* Meetings Ahead.

38

* Research and Development. Modulation Extends

Airborne Surveying Range. How to Speed Tube

Warmup

82

* Components and Materials. Report on IRE Tech-

nical Sessions on Component Design

104

* Production Techniques. Meter Dials Calibrated

Automatically

126

* New Products Design and Application. Frequency

Meter. Other New Products at the IRE Show 144

Literature of the Week.

186

* People and Plants. Haggerty: In Favor of the

Merger ...

184

Reprint Information and Order Form

192

Index to Advertisers

222

electronics

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An International Art

CROSSTALK

IT IS OFTEN DIFFICULT for those of us who live in the United States to think of our country as anything but the biggest and the best, and as the world leader in everything from art to electronics. While talking about Bell, DeForest, Edison and others we sometimes forget the contributions of such men as Ampere, Volta, Ohm and Tesla.
The Institute of Radio Engineers says that more than 70,000 engineers and scientists from 40 countries will attend the 1962 International Convention in New York. If you attend the show and talk with some of the foreign engineers and scientists, you will, we think, be impressed not only by what is going on in other countries but by how much other countries know of what is going on in yours.
The impact of developments elsewhere in the world has been evident for some time in our pages. In our 1960 index, for example, there are 157 items under the "Foreign Electronics" listing. Our index for the first half of 1961 alone contains 151 such items. Our editor spent three months abroad last spring gathering material for his "Electronics in Europe" article published last June. And the annual market report, published in the first issue of this year, contained a section on international trade.
Take acloser look at the first half-dozen issues of ELECTRONICS in 1962:
January 5: An article on a servo-tuned transceiver for airborne vhf communications, from Japan.
January 12: A page on Leo Esaki's "Kink Effect in Bismuth Semiconductors."
January 19: Discussion of twist connectors, developed under a French patent.
January 6: An article on the British bananatube color-television display system and a production technique article on a new method of
assembling high-density cordwood-stacked modules.
February 2: Another Japanese article, on the
field-effect transistor as anegative-resistance device, plus an item about Canadian work on gen-
erating millimeter waves with ferrites. February 9: An article from Poland on asemi-
conductor analog of a cold-cathode counter tube, and a British article on an automatic sensitivity

control for a vidicon tv camera.
February 16: A reference sheet from Australia on a design chart for calculating electron-beam parameters.
Our stateside editors scan a great deal of foreign literature each week in search of articles of interest to our readers, and our overseas editors send in a steady stream of choice items.
Electronics is truly international in character, both the art and the magazine.
Coming In Our March 16 Issue
TWO FROM ENGLAND. Though it wasn't planned that way, our next issue underscores the point made in today's editorial. Two of the articles come from England, one by T. K. Hemingway, of English Electric Ltd. and another by Peter Barratt, of Pye Ltd.
Dr. Barratt's final article (we regret to report that he died suddenly Feb. 11) is acomprehensive, sevenpage review of the effects of long-term nuclear radiation on electronic materials, components and equipment. It supplements a report, by a trio of Americans, published last year (p 62, Feb. 10, 1961) on the effects of transient radiation. The approach in the new article is how to design equipment to live with the effects of nuclear radiation when the dose rate is low, but the exposure period long. Hemingway describes a complementary compound emitter follower and compares its characteristics with cascade emitter followers for certain applications.
Assistant Editor Lindgren will conclude his fourpart series on bionics with a report on applications and new directions. An example is the learning networks developed as analogs of biological systems.

March 9, 1962

3

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SECURITY DEVICES LABORATORY fr4e4ete4
THE FIRST SIMUL-
TANEOUS DATA TRANS-
MISSION SYSTEM

SOL presents adata transmission system so new it hasn't been named! Here is the simultaneous system that promises to be faster, cheaper and easier to operate and maintain.

FASTER

Up to 18 characters per second with asingle pair
of connecting wires.

CHEAPER

Own for approximately 2years' rental of asimi-
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EASIER

Basic servicing can be learned in an hour by non-technical personnel.

SEE US AT THE SHOW BOOTH 1625

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SECURITY DEVICES LABORATORY
ELECTRONIC DIVISION OF SARGENT & GREENLEAF, INC.

ROCHESTER 21, N. Y.

COMMENT
Wasted Manpower?
Your groundrule applied to the suggested compromise by DOD on outline proposal preparation (Crosstalk, p 3, Feb. 9) is excellent.
Conceptual ability of our scientists and engineers must be rewarded appropriately, not restricted by government regulations.
W ILFRED ROTH Roth Laboratory for
Physical Research Hartford, Connecticut
The Crosstalk editorial concerned the "great waste of manpower" involved when a large number of companies prepare proposals for military development contracts. A suggestion by DOD's director of electronics is that the government continue to solicit proposals from all firms with the inclination and ability to tackle a project, but that the proposal merely outline approaches to a system, without working out the engineering details. T he approaches would then be evaluated by government scientists, and detailed proposals would be invited only from companies submitting the most feasible approaches.
The suggested groundrule is that if a company submits a usable item, it gets first crack at the R&D contract. If the government has an over-riding reason for placing the engineering work elsewhere, then the originators of the idea should be compensated fairly.
Processing PC Boards
I just had the pleasure of reading Kenneth Day's Production Techniques article entitled Processing PC Boards in Small Shops, which was printed in the February 9 issue (p 80). We took the liberty of circulating your magazine to many interested people in our company. This includes the people in our research laboratory who are directly interested in all usages and applications of Kodak Photo Resist.
We were very interested in the part of the article where the author mentioned that general agitation during the developing of the resist board helps to wash away the un-

exposed resist. The author then indicated that the board is air-dried and then washed in lukewarm water. We are not in any way suggesting that the procedure be changed, because, obviously, success cannot be disputed. However, we generally follow the practice of flushing the board with water immediately after developing and before drying.
We were particularly intrigued by the author's method of etching using glass marbles to support the board in a horizontal plane.
DON R. SPEAR Eastman Kodak Company Rochester, New York
Automatic Conelrad Radio
We read with interest your fine article on Nuclear Attack and Industrial Survival (p 35, Jan. 12).
As pointed out in this article, the NEAR system for attack warning is dependent upon power lines and, therefore, is not as effective as the automatic Conelrad radio we have developed. Additionally, people in automobiles and in other locations where power lines do not reach could not be warned by the NEAR device.
Our "automatic Conelrad" device, when built into or attached to a radio or tv set, will automatically turn on the radio or tv receiver and automatically tune the set to the Conelroad frequency whenever Conelroad broadcasts.
This eliminates the need to turn on the radio and tune to Conelrad, as required by the NEAR system, thereby eliminating the possibility of confusion. Our device will add only about $20 to the retail cost of a radio or tv set.
F.M .MACKEN PM Motor Company Chicago, Illinois
The NEAR system (National Emergency Alarm Repeater) uses power lines to transmit a 240cycle air-raid alarm. With one receiver per home, over a billion dollars of transmitters and receivers are involved. So far, no decision has been reached as to whether the utilities or the individual would pay for the receivers. The only definite decision is that the government is not to pay for any of it.

4 CIRCLE 4 ON READER SERVICE CARD

electronics

CHRISTIE ANNOUNCES
100 -200-250-400-600 AMP
"IRA SENT FREE"
D-C POWER SUPPLIES

Dynamic Regulation

°tti 4 ·r,

Ripple -1Millivolt

±0.5 volt

âup-- -

Recovery \ Output

Time

Impedance

50 Microsec. 1Milliohm

VOLTAGE RANGE: 15-36 volt d-c. STATIC REGULATION -- LINE & LOAD: +0.05%.
CURRENT LIMITING: Adjustable. DUAL A-C INPUT: 220/440 volt, 3-phase, 60 cps.
PROTECTION: Ultra-fast over-voltage and over-current protection.

STANDARD FEATURES: 10-turn voltage adjustment pot., voltmeter, ammeter, input contactor, pilot light.
OPTIONAL: Available in 19" rack style.
The above performance specs apply to the 100 amp. model. For complete specs of all 5 "Transient-Free" models, write for Bulletin CEC 194.

Over 30 Years ·D-C Power Supplies ·Battery Chargers

Some 200 other Power Supply and Battery Charger Models in the range of 15 to 1500 amp.
Write for catalog. CHRISTIE ELECTRIC CORP.
3400B West 67th Street
Los Angeles 43, Calif.

March 9, 1962

CIRCLE 5 ON READER SERVICE CARD

sieFrira

Today's Highest Precision in Power Sources, Power Measurement

SIERRA MODEL 290C
Calorimetric Test Set
Accuracy: 1% limit of error, 30-1000 watts or 2-3% error 10-1500 watts Frequency range: DC to 12.4 GC
Null balance mode for accuracy Direct-reading mode for speed Differential mode for convenience Price: $4,500.00

Dual water loads available for use with Model 290B

Model

Frequency Max. VSWR

Price

2868

dc-4 GC

1.25

$1600.00

287A -C 5.8-8.2 GC

1.10

1600.00

287A -XB 7.0-10.0 GC

1.10

1550.00

287A -X 8.2-12.4 GC

1.10

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MODEL 190A CALORIMETER
with associated accessories, constitutes another power measuring system available from Sierra. Ranges 300, 600, 1500, 3000 watts max.,
water loads available for dc to 12.4 GC. Model 190A, $860.00

SIERRA MODEL 215A

SIERRA MODEL 1223
RF Calibration Test Set

VHF-UHF Power Sources Output continuously adjustable 10%
to 100% of maximum

Calibrates power measuring devices to

Frequency dial accuracy: ±2%

1% accuracy (probable accuracy 0.5%).

Reset accuracy: 0.1%

Includes six power sources, six power

Modulation: External sine or square wave

monitors (i.e., transfer standards), power and frequency selector, and associated units.
Frequencies: 30, 100, 300, 400,

Frequency stability: ±-0.05% Power output: 50 w nominal, 35 w minimum
Price: $3,300.00

0

500. 1300 MC

Power ranges: Six ranges for 30 to 500 MC

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Four ranges at 1300 MC (5, 15, 30, 60 watts)

Price: $15,000.00

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6 CIRCLE 6 ON READER SERVICE CARD

Model 215A -50 215A -150 215A -470 215A -1000

Frequency Range 25-50 MC 50-150 MC 150-470 MC 470-1000 MC

electronics

ELECTRONICS NEWSLETTER
Thin-Film Devices Give 30 to 40-Db Gain
BLUE BELL, PA.--Active thin-film devices utilizing controlled

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SPECIAL

internal field emission to obtain d-e power gain of 30 db were re-

ported last week at a Phileo-sponsored symposium on hot electrons

in thin films. The meeting was attended by some 200 people from

research labs, military agencies and other companies.

J. P. Spratt, of Philco Scientific

Lab, said the gain was observed in a three-terminal device resembling the Metal Interface Amplifier (p 30, Dec. 15, 1961). An aluminum base and overlapping layers of aluminum

components are used. Circuits are
contained in a housing, about the size of a breadbox, on which a 1-ft dish antenna is mounted.

and aluminum oxide are deposited

on agermanium substrate. Current

flow from an aluminum emitter into the germanium depends on the electric field in the insulator.

Polaris' New Guidance Makes First Flight

Gain of 40 db and oscillation above 1 Mc were reported for another device with unnamed emitter.

MARK 2, the advanced version of the Polaris guidance system that will be

counts for about half the weight and size savings.
The gimbal package has been reduced to about the size of abasket-
ball. The system includes a gyroscopic-type accelerometer which
uses a new electromagnetic device called the ducosyn. It provides gyro suspension plus signal or torque
generation, functions formerly handled by separate devices.
Mark 2 also contains two of another new type of accelerometer, which MIT calls pulsed integrating pendulum accelerometers. The gyros are about the size of tennis balls.

The mechanism is not certain, but used in the 2,500-mi A-3 missile,

may involve transport of hot elec- made its maiden flight from Cape
trons (electron energy is substan- Canaveral last week. Mark 2is only Will Robot Ships Solve

tially above the Fermi energy) through metal films.

about one-third the weight of Mark 1 and is considered more accurate

Maritime Costs Squeeze?

Internal photoelectric emission in thin-film sandwiches containing insulating layers of aluminum oxide and tantalum oxide was observed by Gerald Lucovsky. With a highpower mercury arc source, tantalum oxide devices showed open-circuit voltages of 0.9 v, shot current densities of 3ma/cm', and quantum efficiencies of 0.1 percent. Such devices might be developed into economical, lightweight, radiationresistant solar energy converters.
Army Develops 10-Lb Doppler Radar Set
U. S. ARMY Signal Research and De-

and reliable. Mark 2 was designed by MIT,
with support from GE and Raytheon. GE will produce the system, using three-dimensional welded modules produced by Raytheon (ELECTRONICS, p 62, Oct. 9, 1959). The reduction in electronics size ac-
Radar Rendezvous
WESTINGHOUSE is developing a radar-transponder system that will enable a chaser vehicle to intercept a satellite in space.
It uses four fixed-plane spiral antennas facing the target, one for transmitting the interrogation pulse, the others for measurement of range, azimuth and

SHIP OPERATORS are stepping up
research in techniques to solve prob-
lems of overcapacity, high operating costs and climbing rates, reports International Management, McGraw-Hill publication.
One of the more futuristic devel-
opments may be virtually unmanned ships, electronically-controlled from the home port and steered around other ships by radar and guidance equipment.
Russia soon will commission a fully-automated tanker on the Cas-
pian Sea. Japan is building a
35,000-ton, highly-automated tanker for the Russians and two more tankers with remote controls for machinery are being built in the USSR.

velopment Laboratory, Fort Mon-
mouth, has developed a hand-held, doppler radar set that weighs 10 lb

elevation angles by an interferometer technique.
By using different frequencies

Congressman Urges Space

without batteries. It has a range from 100 yd to over 11 mi.

for transmission and reception and widening receiver bandwidth

Act Patent Flexibility

Signal return is presented audibly to the operator. An auxiliary unit will provide visual display. The
set gives distinctive sounds when it spots moving vehicles or men.
Except for two vacuum tubes,

as the target is approached, minimum range limit is avoided.
The system will be detailed by H. A. Reuter, of Westinghouse
Electric's Air Arm division, at the IRE Convention

BOSTON--Patent ownership prob-
lems in the National Aeronautics and Space Act must be eliminated quickly and cannot wait for an over-
all federal patent policy, according to Rep. Emilio Q. Daddario, of

transistors and other solid-state

Conn., chairman of the patents and

March 9, 1962

7

inventions subcommittee of the
House Committee on Science and
Astronautics. He told a symposium on patent
rights under government R&D contracts that the apparent trend in Congress toward a general government title policy may now be
checked. He doesn't think the situation warrants turning all patent titles over to the government, nor a policy giving the government only license rights for government use.
"The preponderance of evidence," Daddario said, "suggests, however, that the most practical method of administering an overall policy will involve the license approach with
exceptions, rather than a title approach with exceptions."

wpm and store data on some 1,500 flight segments over a full year. Each computer has 14 input-output channels.
Remington Rand also announced three airlines have signed up for its Airlines Interline Development System, based on a real-time computer. It will enable agents on one line to make and confirm reservations on another line by phone. Queries are to be made by Unicall, which transmits voice inquiries to the computer and responds with stored, computer-generated voice replies.
Doped Sapphire Promises Lasers in Orange Range

Propose Reactor-Powered
Voice and Tv Satellite
RCA REPORTS it has conceptually-designed a satellite that could handle 8,000 two-way, single-sideband, voice channels or five tv channels. It would carry a 60-kw atomic power supply of the reactor-generator type under development by AEC and NASA.
RCA says the high power would make ssb feasible and also reduce ground terminal costs. Tv broadcasts could be relayed directly to home receivers from broadcast studios. The satellite would weigh three tons.
Boosters soon to be available would raise the satellite to a 300mi -high parking orbit. An electric propulsion unit would slowly raise it to the 22,300-mi -high synchronous orbit and then maintain it in the correct position and attitude.

LOS ANGELES--Possibility of lasers operating at higher frequencies was reported this week by Ricardo Pastor, of Quantatron, Inc., at a meeting of the American Institute of Metallurgical Engineers.
Manganese-doped sapphire crystals, he said, show "great promise" for lasers and masers. Valence control was described as "excellent" for Mn" and Mn', with the latter more promising for lasers in the orange range. The crystals have fluoresced, but have not been lased.
Pastor also said his company has obtained concentrations of iron in sapphire some 100 times higher than previously and has good valence control with Eu' in calcium fluoride. Work with sapphire indicates possibility of many more lattice attitudes for laser use.
Air Force Starts Up Alaskan Dialing System

Two Real-Time Computers Make Plane Reservations
EASTERN AIR LINES last week opened a $6 million computer center in Charlotte, N. C. It will provide, by phone or telegraph line, reservation data immediately to agents' desks in 42 cities.
The center uses two Remington Rand Univac 490 real-time computers, able to handle 30,000 transactions an hour, transmits at 4,000

AIR FORCE installations in Alaska this week began using the Alaskan Switching System installed by Western Electric as part of the De-
fense Communications system. It is the first direct distance dialing net-
work in Alaska. Automatic switching stations are at White Alice stations near Anchorage, Fairbanks,
Galena and Lake Illiamna. Additional switching equipment has been installed or modified at 32 other locations.

In Brief ...
TWO FOREIGN agreements have been signed. ITT will make and sell Nippon Electronic communications equipment. Pirelli SpA, of Italy, will make and sell General Instrument components and equipment. GI also reports it is increasing it nanocircuit production to 2,000 a month.
G. C. DEWEY CORP., an R&D firm, has acquired Pitometer Log Corp. and will go into manufacturing.
AREA REDEVELOPMENT Administration has made second loan in Boston area (p 12. Feb. 9), $487,500 to Contronics.
AUTONETICS has received a $16.9 million contract for B-52 radar terrain-avoidance computers.
COLLINS RADIO reports $7.5 million in contracts for retractable antennas for hardened missile sites, digital data modems for Air Force's 465L system and airborne communications-navigation equipment.
ADDITIONAL Hawk missile contracts to Raytheon total $4.7 million for parts, radars and development. A $300,000 subcontract for telemetry goes to Advanced Electronics.
CUBIC CORP. has a$420,000 contract for three-dimensional-positioning rocket scoring kits, and a subsidiary, Temec, Inc., $940,000 for awideband scanning antenna.
SYLVANIA has ordered $1 million in digital tape units for military computers, from Consolidated Electrodynamics.
LEACH reports an Army radarguided Mauler missile has been flown operationally with one of its command-destruct receivers.
LITTON INDUSTRIES plans to built a $16 million plant in Atlanta, Ga., probably for production of data processing systems.
FCC ANNOUNCES it will use a computer to speed radio and tv license processing.
RELIABILITY study of the Orbiting Geophysical Observatories will be made by Planning Research Corp.

8

electronics

New from Sprague

SEE THEM AT IRE SHOW BOOTH 2416

1111SPEED 2N2162 2N2163 2N2164 2N2165 2N2166 2N2167

SILICON CHOPPER

TRANSISTORS

Sprague Surface Precision Alloy Transistors are especially designed for low-level chopper
applications. Their specifications have been tailored to meet your actual circuit requirements. Compare these standard Sprague units with ordinary alloy devices for the following characteristics:

· Low Offset Voltage · Low Dynamic Resistance

· Low Output Capacitance · Low luo

· High Frequency Response e Matched Pairs Available

TYPE
2N2162 2N2163 2N2164 2N2165 2N2166 2N2167

Min. BV cB o (Volts)

Max. Ica° (»a)

30

.01

15

.01

12

.02

30

.02

15

.02

12

.02

Max. VEc (mv)
2 2 1.5 3 3 2.5

Min. FIFE
20 at 1kc 20 at 1kc 25 at 1kc 2.5 at 4 mc 2.5 at 4 mc
4 at 4 mc

Max. Cog (Pf)
, 10 10 10 10 10 10

Min. fT (mc) -- 14 14 24 10 10 16

For application engineering assistance without oh/igation, write Transistor Division, Product Marketing Section, Sprague Electric Co., Concord, N. H.

For complete technical data, write Technical Literature Section, Sprague Electric Company, 35 Marshall Street, North Adams, Massachusetts.

SPRAGUE COMPONENTS

TRANSISTOR
CAPACITORS MAGNETIC COMPONENTS RESISTORS

INTERFERENCE FILTERS
PULSE TRANSFORMERS PIEZOELECTRIC CERAMICS PULSE-FORMING NETWORKS

HIGH TEMPERATURE MAGNET WIRE
CERAMIC-BASE PRINTED NETWORKS PACKAGED COMPONENT ASSEMBLIES FUNCTIONAL DIGITAL CIRCUITS

March 9, 1962

SPRAGUE®
THE MARK OF RELIABILITY

CIRCLE 9 ON READER SERVICE CARD

9

NEW
"HIGH ENVIRONMENTAL" TUBES

PHOTOTUBES

CERAMIC HYDROGEN
THYRATRONS

Tung-Sol's "High Environmental" transmitting, series regulator and modulator tubes --including hard-glass miniature--are designed and built to withstand the toughest extremes of shock, vibration and temperature with highest standards of performance and reliability.
HYDROGEN DIODES Tung-Sol has expanded its hydrogen diode family to include tubes with ratings up to 2 amperes average at 25KV peak inverse voltage. These tubes, the 7789, 7790, 7791 and 7792 serve as charging diodes or clippers in radar modulators and as general-purpose, high voltage rectifiers.
NEW 5000-VOLT SILICON RECTIFIER This uniquely designed 5000-volt unit features a special double-seal to assure maximum reliability in the toughest high-voltage industrial and military applications. These rectifiers are smaller than competitive devices and less expensive. They are furnished with clip-mounting terminals for ease of installation.

Tung-Sol's new series of experimental photo-emissive and photo-conducting devices offer reliable full-spectrum coverage from infra-red to far ultra-violet in any of countless control applications.
SUBMINIATURE TUBES
Now greatly expanded, the Tung-Sol line of rugged subminiatures is designed to highest performance standards, including MIL specs, for exacting industrial and military uses. Included are pentodes, triodes, diodes, VR tubes, reference tubes and thyratrons.

This new Tung-Sol family of ceramic hydrogen thyratrons includes the 8191, 8192, and 8036 which deliver peak output powers of 135 KW, 450 KW., and 6.5 MW., respectively. All are flange-mounted, with flying leads, to permit easy installation and good electrical connections, consistent with minimum tube size as demanded by airborne radar and other highly compact applications.

COMPACTRONS
Tung-Sol compactrons qffer definite advantages, both engineering and economic, to equipment manufacturers. Basic design considerations include careful attention to tube usage from o functional standpoint. The 12-pin configuration provides the versatility necessary to produce multi-purpose, multiple structure tubes.

PRESS-FIT DIODES AND ASSEMBLIES
Tung-Sol premium-quality press-fit diodes offer electrical characteristics that are equal to or exceed those delivered by the stud-mounted 1N2154-1N2160 series. These economical units make practical the use of a single device for applications requiring from 1to 30 amperes. Also available: a wide line of standardized rectifier modular assemblies in a variety of voltage ratings. The assemblies are the smallest made today for the 2 to 50 ampere range.

10

CIRCLE 10 ON READER SERVICE CARD

electronics

SUBMINIATURE LAMPS
Tung-Sol subminiature incandescent lamps are produced in many combinations of bases and filaments and are designed to operate over a broad rcnge of voltages. Life expectancies range from 500 to more than 5000 hours. The Tung-Sol T Ph unit, the newest addition to the line, is intended for indicator service in aircraft, military and commercial applications.
TRANSFORMER-, RECTIFIERS
Nine of every ten transformerrectifiers supplying airborne power to the nation's newest commercial, military and experimental aircraft were designed, developed and manufactured by Tung -Sols Chatham Division. Chatham manufactures more than thirty different transformer-rectifiers with ratings from 5 amps through 200 amps.

NO. 4 READ-OUT LAMP
.1[

The No. 4Tung-Sol lamp is ahigh. intensity miniature light source particularly well suited for photoelectric read-through applications. It may readily be adapted to a wide variety of uses where an intense, small spot of light is re. quired.

IOHLIOH S OF THE NEWER TUNG-SOL COMPONENTS AND EQUIPMENT

POWER TRANSISTORS

Tung-Sol germanium ColdWeld power transistors feature ultra-low K-factors, maximum ¡unction temperatures of 110C% low saturation voltage, and high breakdown voltages which cant' ibute to the superior performance of these peakpower devices. Copper-tocopper Cold Welds eliminate heat-produced contamination.

DYNAQUAD
Tung -Sols new 4-layer PNPN bistable transistor slashes component requirements and offers substantial circuit simplification. One example of this component advantage: a 10-bit shift register designed with Dynaquad requires 1/3 the printed circuit board area as that in aconventional transistor circuit.

REGULATED POWER SUPPLIES
This new hand-carry 100 ampere regulated d-c power supply, Model R2432-100 is the first of a series to be introduced by Tung -Sols Chatham Division. Weighing less than 100 pounds, 50% lighter than comparable competitive units, the R2432-100 features solid -state reference and control circuits in addition to complete internal radio noise suppression.

YOU'RE INVITED . . Stop at the Tung-Sol IRE

exhibit--Booths 2627, 2629, 2631, 2633. If you

won't be able to attend the IRE show, Tung-Sol will be

glad to send you full details. Just write: Tung-Sol

Electric Inc., Newark 4, New Jersey. Sales offices:

Atlanta, Ga.; Columbus, Ohio; Culver City, Calif.;

Dallas, Tex.; Denver, Colo.; Detroit, Mich.; Irvington,

N.J.; Melrose Park, Ill.; Newark, N.J.; Philadelphia, Pa.;

Seattle, Wash. CAN-

ADA: Toronto, Ont.

TWX:NK193

10

TUNG-SOL

March 9, 1962

CIRCLE 11 ON READER SERVICE CARD

11

WASHINGTON OUTLOOK

FAA OUTLINES EQUIPMENT NEEDS

FEDERAL AVIATION AGENCY envisions an additional investment of
$492 million in vhf omnidirectional radio and instrument landing systems and $164 million more for primary radar equipment in the next five years. They
will be key elements in aprogram to modernize air traffic control along lines suggested by the Project Beacon report (ELECTRONICS, p 14, Nov. 17).
Outlining its plans to equipment manufacturers last week, FAA said voice radio will continue to be the chief means of air/ground communications. Pros-
pects of achieving apractical automatic data link system are dim. Communica-
tions will be limited to the 360 vhf channels available between 118 and 136 Mc with 50-Kc spacing. Ground equipment will be completely modernized to 50-Kc capability within five years.
The agency also will require identity-reporting (plus yet-to-be-developed altitude-reporting) radar transponders for all aircraft operating in the new system within airspace under positive traffic control--an area to be greatly expanded in the five-year period. For large commercial planes, FAA wants sophisticated equipment providing at least 4,096 identity codes and altitude
readout in the 100-ft increments to altitudes in excess of 100,000 ft. A simplified transponder for private planes is to provide 64 codes and altitude reports in 100-ft increments to at least 15,000 ft. To display beacon data to traffic
controllers, FAA wants ground processing equipment that shows altitude nu-
merically next to aircraft targets and shows identity alphanumerically.

TAX CREDIT BILL IS ON ITS WAY

TAX REVISION BILL including a tax credit designed to stimulate invest-
ment in such growth industries as electronics, is over its biggest single obstacle. The House Ways and Means Committee has approved it. After the expected passage by the House, it will promptly be taken up by the Senate Finance Committee.
The main feature is a$1.8 billion tax break for business based on the amount a company spends for equipment. The formula allows a concern to subtract from its income tax eight percent of its spending on new equipment. The same credit is provided for purchase of used equipment, to a maximum of $50,000.
This applies to expenditures made after Dec. 31, 1961. The House version imposes federal income taxes on income earned by over-
seas subsidiaries of U. S. corporations, particularly those that might be considered "tax haven" operations. Other revenue-raising provisions include withholding on payments of dividends and interest and tighter treatment of
deductions for business travel and entertainment. Most of the provisions of the bill are highly controversial.

CONGRESS WON'T RUSH SATELLITE SYSTEM

CONGRESS WILL GO SLOWLY on legislation for a communications
satellite corporation. Though Hugh Dryden, NASA deputy administrator, says early passage will speed system development, most Washington officials feel there is little need for haste. Congress is hearing views now.
The Senate Space Committee heard NASA, the State Department, FCC and some businesses last week. Next week, the Space Council will lead off the House Interstate Commerce Committee's consideration of the President's proposal for a billion-dollar corporation open to investment from manufacturers and communications carriers (ELECTRONICS, p 12, Feb. 16).
"TVA" Senators want a government-developed system under strict government control. Estes Kefauver (D-Tenn.) will push this, but will probably have little backing. Robert S. Kerr (D-Okla.) would permit creation of a corpora-
tion by American carriers only. Even within the administration there are conflicting views. FCC Chairman
Newton Minow testified in favor of the Kerr bill last week.

announcing
NEW JER1101,0
rf LOGARITHMIC AMPLIFIER Model LA-5100
500kc to 100mc

Accurate to within -±ldb over 80-db dynamic range
Below is band-pass filter response curve without benefit of log amplifier. At right, same curve after amplification by LA-5100.

80

20 db
co

C,0
TYPICAL BAND-PASS FILTER RESPONSE CURVE

This extremely accurate log amplifier enables exact measurements of attenuation in networks, filters, amplifiers, and other devices exhibiting dynamic operating ranges down to 90 db. Total rf response of device under test can be displayed in aprecise logarithmic ratio on a standard dc-coupled oscilloscope. Write for complete technical data.

· Gives true log presentation over frequency range 500kc-100mc, with flatness better than 1/2 db.
· Four calibrated ranges: Logarithmic 0-40, 0-60, 0-80 db (readable to 90 db) and one linear range 0-20 db (variable gain).
· Continuously variable log-expand control permits uncompressed presentation of first 5 db of each range.
· Direct-reading meter for point-by-point measurements.
· Oscilloscope output jack for sweep display measurements.
· Designed for rack mounting: 7" x 14 1 /2 "x 19".
$795.00

JERROLD ELECTRONICS CORPORATION
Industrial Products Division, Dept. ITE-131, Philadelphia 32, Pa. Jerrold Electronics (Canada) Ltd., Toronto ·Export Representative: Rocke International, New York 16, N.Y.
SEE US IN BOOTH 3904-6 AT THE IRE SHOW

March 9, 1962

CIRCLE 13 ON READER SERVICE CARD

13

265 vDC 600 OHMS

,4 36 RES 26 5 VDC

1.1 21

3 1

87 7

16 t5

(1=-3 133311313
e Ao·Hrate

265 SOC 600 OHMS 3A RES 265 ',WC

265 vOC 600 OHMS 3A RES 265 vOC

26.5 VDC 600 OHMS

38 RES. 265 VOC

12. 2T

3 2.4

265 SOC 600 OHMS

36 RES 265 vDC

14, 27

3 IA

165 SOC 600 OHMS

3A RES 265 vOC

1,1 2

Li.:» 1

;t6 t5

265 vDC 600 OHMS 34 RES 265 VDC

8 7 1.,50 A K

6 t5

265 wDC 600 OHMS 3A RES 265 SOC
13,

ETt- 7-7aunseurn

6 t5 st.0 en)

265 vDC 600 OHMS 3A RES 265 VDC 2w_3_,11
E7t6 t5

265 vDC 600 OHMS · 34 RES 26 5 VDC

8 7 Iaulonave

6 t5 o j

265 vDC 600 OMM

3A RES 265 VDC

1,1 2

l_t1

8--t-7 7

6 t5

NEW AE MM-22 RELAY
Photo is actual size

265 3A
II.

SOC 600 OHMS . RES 265 vDC · 2w_12.

wrovolo.` * at.cr el< I u s

announces... amajor breakthrough
in military relay reliability

Our engineers have been developing this microminiature relay for more man-hours than we care to admit. The reason, simply enough, is the rigid objective we set forth.
For we wanted to offer you amilitary type relay with a reliability factor that you -- in your fondest dreams -- never thought possible.
To accomplish this, our engineers treated the whole manufacturing process as an integral part of the design. They, the design engineers, developed a revolutionary new type of clean room ...so free of contamination possibilities that it makes old-fashioned clean rooms resemble the kids' sandbox. Instead of trying to eliminate unwanted particles after the relay is assembled, we assemble and evacuate in the dry and inert atmosphere that we want in the finished product.

14

CIRCLE 14 ON READER SERVICE CARD

If you have had the trying experience of having to test twenty, thirty or forty MIL-R-5757/10 type relays to get but ten satisfactory ones, we proudly say this new AE MM-22 relay will prove the answer to your problems. For the complete background on the design, development and specifications, please ask for Circular 1999. Write to the Director, Military Equipment Sales, Automatic Electric, Northlake, Illinois.
AUTOMATIC ELECTRIC
Subsidiary of
GENERAL TELEPHONE &ELECTRONICS
GENERAL
electronics

OGO will check in here

Soon anew space chamber 30 feet in diameter will fill this deepening bowl of earth. Here OGO (NASA's Orbiting Geophysical Observatory) will be subjected to conditions of solar heating, vacuum, and vehicle radiation to the cold of outer space. The new space chamber will be the sixth at STL. It will enable engineers and scientists working on OGO, Vela Hotel and other STL projects to test large, complete spacecraft as well as major subsystems. And along with other ad-
vanced facilities at STL's Space Technology Center, it will
provide unusual scope for engineers and scientists to verify and apply new techniques in design, development and fabri-

cation of spacecraft. STL's expanding space programs have created new opportunities for engineers and scientists in the
following fields: Aerodynamics, spacecraft heat transfer; Communication Systems; Electronic Ground Systems; Power Systems; Propellant Utilization; Propulsion Controls; Reentry Body Evaluation; Systems Analysis; Thermal Radiation; and Trajectory Analysis. All qualified applicants are invited to write Dr. R. C. Potter, Manager of Professional Placement and Development, for opportunities with STL in Southern California or at Cape Canaveral. STL is an equal opportunity employer.

SPACE TECHNOLOGY LABORATORIES, INC.
o subsidiary of Thompson Ramo Wooldridge Inc.
P.O. Box 95005-J, One Space Park, Redondo Beach, California · P.O. Box 4277, Patrick AFB, Florida LOS Angeles · Vandenberg AFB · Norton AFB. San Bernardino · Dayton · Cape Canaveral · Washington, D.C. · Boston · Huntsville
IRE Delegates: NYC Interviews March 26-29. Call F. C. Nagel, Plaza 2-8968. Visit SIL Booth 1435

New reading suggestions
from McGraw-Hill

1.

COMPUTER HANDBOOK

Your every job in designing. using, and applying analog and digital computers is made easier with this practical handbook. It brings you reliable help on formulas, techniques. cireuits. components, systems, and much more. Edited by II. Huskey, Univ. of Calif., Berkeley; toad G. Korn. Univ. of Arizona. Prepared by a Staff of Specialists. 1251 pp., 1099 illus., $25.00

2. FOUNDATIONS OF FUTURE ELECTRONICS Brings you current thinking in those scientific areas believed to have the greatest impact on the electronics of the future. and helps you develop insight into various aspects of this field. By D. Langmuir, Space Tech. Labs., Inc.; and W. Dershberger. Univ. of Calif., Los Angeles. 514 pp., 181 illus., $10.75

3.

SYNTHESIS OF

OPTIMUM CONTROL SYSTEMS

Explains advanced design techniques for high performative systems requiring the ultimate in response. Ineluded in the coverage are four basii· methods of optimising a control system. By S. S. L. Chang. New York University. 381 t'y.. $11.75

4.

PRINCIPLES OF LINEAR NETWORKS

Present s a logical development of circuit theory for work in electronics, energy conversion. and related fields. Ranges from fundamentals through networks in the sinusoidal steady state to two-terminal-pair networks. By B. Friedland. Melpar, Inc.; O. Wing, Columbia Univ.. and R. Ash, Columbia Univ. 270 pp.. 522 illus., $8.95

5. COMPUTER CONTROL SYSTEMS TECHNOLOGY A unified view of the concepts. design techniques, and applications of computer control systems is afforded by 21 noted authorities in this stimulating hook. Treats circuitry design. error analysis techniques. synthesis methods. sampled-data theory, missile eontrol system synthesis, and much more. Edited by C. Leondes. UCLA, 624 pp., 378 illus.. $16.90

6.

LINEAR VACUUM-TUBE AND

TRANSISTOR CIRCUITS

Presents in,

concepts and techniques

for effective analysis and synthesis of vacuum-

tube and transistor linear circuits. Using two-

port theory as a foundation. explains concepts

and demonstrates practical applications. By

A. J. Cote, Jr., and J. B. Oakes, The Johns

Hopkins Univ. 411 pp., 263 Illus., $10.75

7.

ACADEMICAN V. I. SMIRNOV'S

LINEAR ALGEBRA AND

GROUP THEORY

Offers a selection of material from Prof. Vladimir I, Stnirnov's encyclopedic six-volume "Course of Higher Mathematics," emphasizing those topics of greatest importance in applied mathematics and theoretical physics. Revised, adapted, and edited by R. Silverman, 400 pp., 312.50

16

CIRCLE 16 ON READER SERVICE CARD

8.

HANDBOOK OF

SEMICONDUCTOR ELECTRONICS

This practleal. self-vontained guide to the design and applications of transistors. diodes, and photocells lias been thoroughly revised and rewritten to reflect current advances. Ineiudes two new sections on Ormilts. Treats Zener diodes. Esaki tunnel diodes, alloy transistors. drift transistors. thyrotron transktors. and much mor,'. Edited by L. Bunter, IBM. 2nd Ed. 650 pp.. illus., $18.50

9.

RELIABILITY PRINCIPLES

AND PRACTICES

offers fundamental concepts of relish ilit y theory and demonstrates their bearing on the solution of praetical reliability problems. Includes reliability formulations and mathematical model s. s;ilutions of typical examples. and illustrates applications. Also introduces new concept s tested and developed by author. By S. R. Calabro, International Electric Corp., 355 pp., 50 illus.. $10.50

10.

ELECTRONIC EQUIPMENT

DESIGN AND CONSTRUCTION

Helps you design and build electronic equipment to perform In space and other severe environments. Takes you through eaeh step, front basie eonsiderations of environmental effects to final systems assembly and product testing. By G. Dummer, Royal Radar. Estb., London; G. Brunetti. Grand Central Rocket Co.: and L. K. Lee, Space Tech. Labs. 256 pp., 89 illus.. $8.50

11.

ANALYSIS AND DESIGN

OF NONLINEAR FEEDBACK

CONTROL SYSTEMS

Gives you a foundation in nonlinear control theory which is directly applicable to many problems. Develops theory behind basic mathematieal tools, and shows how they are applied to the analysis and design of nonlinear systems. By G. Thaler. C.S. Naval Postgraduate School; and M. Pastel, Nortronitr. 514 pp.. 323 illus., $14.50

12. PRINCIPLES AND APPLICATIONS OF ELECTROMAGNETIC FIELDS
A thorough and complete coverage of basic electrotnagnetie fundamentals. Takes you through careful discussions of physical concepts, their mathematical derivation, physical significance of their results, and detailed applications of theory. By R. Pionse> and R. Collin. both of Case Institute of Tech. 554 pp., 273 illus., $12.75

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15.

DESIGN MANUAL

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l'rovides information in the form of articles, design charts, nomographs, and actual ready-to-use circuits that helps you solve design problems invol/ing transistors and other semiconductor devices. Gives component values for scores of circuits, important (lata on newer developments. and more. Edited by J. Carroll Managing Editor, Electronics. 390 pp., over 600 illus.. $9.50

16. ELECTROMAGNETIC COMPONENTS FOR SERVOMECHANISMS
hiere is a rich storehouse of practical facts to help you select rotating components and use them effectively in precision servomechanisms. Discusses electrical and mechanical characteristics . ..shows how equivalent circuits can be used for understanding system performance of a-c components . . and more. By S. Davis. Consult. Electrical Eng.; and B. Ledgerwood, Chief Editor, Control Engineering. 342 pp., 315 illus., $11.50

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ANTENNA ENGINEERING

HANDBOOK

Provides information on all areas of antenna engineering to help you solve problems in the design and use of antenna systems. From basic fundamentals to modern applications. this big handbook offers the kind of detailed treatment you need for suecessfully working in today's complex field of antenna engineering. Edited by H. Jasik, Jasik Labs.: Prepared by a Staff of Specialists. 1013 pp., 993 illus., $22.00

McGraw-Hill Book Co., Dept. L-3-9-327 W. 41st St.. New York 36, N. Y.

Send me book(s) whose numbers Ihave circled below for 10 days' examination on approval. In 10 days t will remit for book(s) Ikeep, plus few cents for delivery costs, and return unwanted book(s) postpaid. (We pay delivery costs if you remit with this coupon-
same return privilege.)

1

2

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4

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6

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8

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10

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16

17

Name
City

Address Zone

State

Position

Company

For price and terms outside U.S., write McGraw-Hill Intl, N.Y.C

L-3-9

CIRCLE 17 ON READER SERVICE CARD->-

e mismY UPPER
· FOCUS 0 INTE NSITy

· SHIFT 0 ATrarlj

`%poe
VOLTS/CM

O.C.

10

10

,e · e ·

A. C

1000..ar

· 1o0 uv0

INPUT
me 9
30 pF

LEVEL

TIN1E ULTIPLIER

"mums Y LOWER
· FOC US O INTE NSIT

· SHIFT O ATTEN

r·3

V SHIFT A EXPANSION 0
'nfe

TINIE/CNI

KA' 10

100 LS
10

10

VOLTS/CIVI

O.C.

10

10

· ·

1

.

·

A.G.

·

1ne0t 0 v

ft

· 100
e 10

INPUT
rneg 30 pF

POWER
ON
fe\
OFF

TRIOOER

SELECTOR E XT

INPUT

rneg 30 pF

Packard Bell Electronicsi

II

CAL OUT

MODEL 5Mc 2P oscilloscope

CHASSIS *, ONO

$57O (why pay more?)

You're looking at 22 lbs. of new ideas, actual size-- Packard Bell's new, portable, dual-beam oscilloscope.
Once upon atime, dual-beam oscilloscopes were priced so dear that most users limped along with one-beam 'scopes (simultaneous viewing of two signals was like watching tennis, not to mention the problem of disparate time bases) .Then, Packard Bell decided to do something about the high cost of two beams. While others talked about value engineering, we used it. Where others designed on tradition, we designed on function. While others solved old problems, we looked for new ideas.
It worked! Now, $1,000-worth of oscilloscope costs only $570 from Packard Bell.
Compare these features:
DC to 51\ilc bandwidth at 100mv/cm (lmv/cm at 20Kc )with no phase shift between beams.
Schmitt trigger circuit with both internal and external adjustable trigger levels.
Horizontal sweep of 1microsecond/cm to 1second/cm in five steps.
All control variables, including trigger, have fixed settings with overlapping continuous adjustments.
Compact size (10M6" high, 81%6" wide, 133 /4 6" deep) and light weight (only 22 lbs.) for true portability.

More features and specifications

on the reverse s'd

·

eet.

Attention, Prove-it-yourselfers:
Automatically request afree trial demonstration by
dropping this return card in the nearest mail
drop. Find out for youtself that dependability and equivalent performance cost only half what they used to.

NAME TITLE COMPANY ADDRESS CITY TELEPHONE

STATE EXT

TWO BEAMS FOR THE COST OF ONE

0.000.fflassommotaise....44,..

III

IIII

tamitiJ
PACKARD BELL'S DUAL-GUN
OSCILLOSCOPE
$570
(Less than most one-gun 'scopes)

BUSINESS REPLY MAIL
No postage ,tamp necessary if mailed in United States
Postage Will be Paid by:
PACKARD BELL ELECTRONICS Commercial Instrument Department P.O. Box 337 Newbury Park, California

FIRST CLASS PERMIT NO. 11
NEWBURY PARK CALIFORNIA

The 22 lb. 5Mc 2P is the world's most portable dual-beam oscilloscope -- ideal for field applications.
The 51 /2 "high 5Mc 2R fits standard relay rack, offers all of the in-use features of the portable model.

·

alnie ·········1,

Ma ·,Ma,

DISPLAY

High resolution, flat-faced, 31/2 "diameter CRT has two

separate electron guns in one envelope. Each beam is

usable over the full face of the tube. Beams stay in

"sync" when raised or lowered. Accelerating potential

···· ffl······· · IMF." · ··11. · ····
is 1400 volts. Type 3AZP31 CRT is normally supplied, with P2 and P7 phosphors also available. Graticule brightness is adjustable by avariable control on the front panel.

VERTICAL SYSTEMS

BANDWIDTH: DC to 5Mc (3db) on each of two iden-

tical vertical amplifiers at asensitivity of 100 v/cm to

100 mv/cm. A pre-amplifier is built-in on the lower

vertical amplifier providing 2.5 cps to 200 Kc at 10

mv/cm and 2.5 cps to 20 Kc at 1mv/cm. Accuracy on

any range after calibration on one range is 5%.

,

RISE TIME: Approximately 0.07 microseconds. IMPEDANCE: 1MS7 in parallel with 30pF capacitance. VERTICAL SHIFT RANGE: Approximately two diameters. MAXIMUM VOLTAGE: 600 volts DC or peak-to-peak AC. Electrical ground can be isolated from case ground by disconnecting ashorting bar on the front panel.

HORIZONTAL SYSTEM
SWEEP: The sweep is supplied from aconstant-current RC charging network through adifferential amplifier providing sweep linearity of 1%. SWEEP RANGE: 1microsecond to 1sec/cm in 5steps with an overriding continuous variable adjustment on each step calibrated at Xl, 2, 5and 10. Accuracy on any range after calibration on one range is 3%, except on the slowest range.

SWEEP MAGNIFIER: Continuously adjustable from the center of the tube face to X10, calibrated at X1,2 and 5. HORIZONTAL POSITIONING: Greater than 10 diameters so that any position of the trace can be observed. TRIGGER: A Schmitt trigger circuit provides for both internal and external trigger levels. Triggering range: ±0.5 cm to ±2.5 cm from the mean range internal,
±0.5 to -± 2.5 volts external; continuously adjustable.

GENERAL
BEZEL MOUNT: Mounted by snap-fasteners, the bezel is easily removed for access to the removable graticule and light filters. The camera adapter replaces the bezel
and is held in place in asimilar fashion. Z-AXIS MODULATION: Either beam, or both can be mod-
ulated through terminals on the rear. EXTERNAL SWEEP: Access to the horizontal amplifiers is provided through terminals on the rear. Provision is made for either single-ended or differential input. Sensitivity is continuously adjustable from 0.2 to 2v/cm. Frequency response from DC to 200 Kc (3db). CALIBRATION SIGNAL: A square Wave 60 cycle 1.0 vpeakto-peak signal, from aZener diode with 1% accuracy, is available on thy front panel for calibration.

POWER: 115v AC ± 10%, 60 cycle. CONSUMPTION: 75 watts. MAINTENANCE: Only two types of vacuum tubes are used in addition to the CRT. Access to both sides of all circuit boards is provided. DIMENSIONS: 5Mc 2P (Portable) 107A6" high (front), 9%" high (rear) x811A6"wide x13%g" deep. Weight -- 22 pounds. 5Mc 2R (Rack Mount) 51/2 "high x 19"
wide x 13%g" deep. PRICE: 5Mc 2P or 5Mc 2R including two sample leads, $570.00 f.o.b. Los Angeles. Price is subject to change without notice. WARRANTY: Packard Bell Oscilloscopes carry a warranty for one year, including CRT.

ACCESSORIES
PRI.-A PLIFICK : Model 100 Differential Pre-Amplifier provides asensitivity of 100 microvolts/cm from DC to 10 Kc. Packaged external to the basic scope, transistorized and battery powered. 'SCOPE CALIBRATOR: Model 101 'Scope Calibrator provides 3different signals for oscilloscope calibration.

PROBE: Model 102 Probe provides 10 Megohms input impedance in parallel with an adjustable capacitance from 3to 12 pF. CAMERA ADAPTER: Model 103 Camera Adapter is available for aPolaroid Camera.

Upper Y input
o

channel Low signal

per.variable-

Upper drive cathode follower

Upper differential output amplifier

Y plates
Upper gun

Lower YO--

Lower rang control

input

h.
0-- External trigger

Differential trigger
amplifier

0

0

4)

Lower pre -
amplifier

Co
4'

Lower variable gain differential
amplifier

Lower drive cathode follower
I

Lower differential output amplifier
r

"X" channel

!

Trigger

Sync separator and

Time base

-- Schmitt -- switch

differentiating circuit

--

bistable -- circuit

Time base gate

--

Bootstrap circuit --

Cascoded
differential
amplifier

tTo bright up bistable

Y plates Lower gun
X plates Both guns

BLOCK DIAGRAM of dual-beam 'scope shows independent vertical channels and common horizontal channel. Preamplifier in lower channel provides for increased sensitivity but may be bypassed. Outputs from cathode followers trigger the sweep when either vertical channel signal reaches magnitude sufficient for 0.5 cm ver-

tical deflection. At apoint in sweep-stability control's excursion, the sweep bistable becomes free-running and further adjustment causesvariation in free-running sweep frequency. Output of Xchannel is applied to both sets of horizontal deflection plates. Adjustment compensates for differences in deflection plate sensitivities.

Packard Bell Electronics
P. O. BOX 337 NEWBURY PARK, CALIFORNIA · PHONE MA 9-5051
PRINTED IN U.S

MOItt STABLE MPlu RELIABLE
than fragile crystals and divider circuits
HATHAWAY FREQUENCY STANDARDS

FREQUENCY STANDARD
Taj
· 4111,o.
4444 1mo.
TYPE 65 Freq: 240 to 2000 cps. Accuracy: ± (-54°C to +85°C, no heater power):
.002'; (+15°C to +35°C, no heater power); -± .005% (-54°C to +85°C, with heater). Vibration: Maintains .02'; accuracy at 20g from 10 to 2000 cps. Shock: Operating: 50g for 8.5 ms. Non-operating: 100g for 8ms.

The logical answer is the Hathaway tuning fork if your resonator must generate a frequency below 10,000 cps, be accurate to .002%, immune to high shock and vibration, insensitive to pressure changes, and maintain stability at temperature extremes.
For example, the Type 65 featured here has wide application in aircraft and missile guidance systems, and as a constant speed control of aircraft generators. It is used as a time reference for high speed counting, ballistics measurements, and geophysics... in instrument power supplies.. as a fixed audio oscillator. And our tuning forks will eliminate the count down circuits required with crystals, at the same time

meeting all military environmental requirements.
Here's what you can expect from the advanced Hathaway design: silicon transistor drive and amplifier, optional thermostatically controlled heater, provision for exact frequency setting, and standard octal socket mounting for easy replacement.
For details on how the tuning fork frequency standard can give your product lighter weight in a smaller package, greater reliability and stability, write to us at the address below. Our engineers also will be happy to appraise specialized applications.

4'

I I' 1 MINIATURE CONFIGURATIONS I 1 1 1 1 12
INSTRUMENTS, INC.
A SUBSIDIARY OF THE LIONEL CORPORATION 5802 EAST JEWELL AVENUE, DENVER 22, COLORADO

IRE-- Booth 1920
,O\A SKyline 6-8301 TWX DN 656

Represented Internationally by: Terminal Radio International, Ltd., 3West 61st St., New York 3, N.Y.

-E--CIRCLE 20 ON READER SERVICE CARD

CIRCLE 21 ON READER SERVICE CARD

21

Piano key technique assembles pellet components in nest for Mallory modules

VLINE

HALL UNIT

LOAD

ILINE V-H

VH KVLINE SINurtILINE SIN(wt +
vLIL[COS --COS (2wt+ 0)]

VIL

Hall generator power measurement circuit suggested by Beckman Helipot for thin-film device

Sylvania's photo-conductive cells are gas-filled, have internal color dot to indicate cell damage

e'"NI vEes gro
l vip,a,,/ SPECIAL

PREVIEW OF EXHIBITS:
Components and Modules

NEW YORK--Among the components and circuit building blocks being introduced this year at the IRE Show is aHall effect voltage generator made of indium antimonide vacuum-deposited on a glass substrate. Its developers say the thinfilm technique significantly raises sensitivity and impedance levels.
Input and output impedances ranging up to 600 ohms permit easier load-matching, according to Helipot division of Beckman Instruments. The thin-film element is encapsulated in a package fl in. sq. The film is 7 microns thick, the glass plate, 12 mils.
Applications, in addition to mathematical function and measurement, include amplification, fre-
quency doubling and heterodyne generation. The circuit illustrates power measurement. If the control current is proportional to, and in
phase with, line voltage while magnetizing current is in phase with line current, Hall voltage output is a d-c term proportional to real
power and an a-c double frequency term proportional to volt-amperes.
Amperex Electronics Corp. is showing a line of instant-heating
tubes, called harp-cathode tubes be-

cause of the cathode shape. First is a twin tetrode, a high-efficiency class AB I linear amplifier that Amperex considers especially suitable for single-sideband.
The company is also showing a 2.5-mm reflex klystron with midband power of 100 mw and a10-mw minimum over an 8-Gc tuning range, and an 8.6-mm, 100mw reflex klystron.
A series of epitaxial varactors designed for use in harmonic generators will be shown by Sylvania Electric Products, Inc. They have breakdown voltages from --6 to --120 yand cutoff frequencies from 10 to 140 G at --6 v.
General Electric's Rectifier Components department will have silicon controlled rectifier stacks in three fin sizes. The 3 x 3 in. and 5 x 5-in, sizes for law and medium currents mount five types of scr's; ahigh-current stack is made of six aluminum extrusions 4 x 4
X 5-in. Temperature maximum is 150 C. GE is also introducing a double-diffused, 250-amp silicon rectifier which will withstand a onecycle surge of 5,000 amp.
P. R. Mallory & Co. will demonstrate its "piano key" technique for

assembling microcircuits. Ceramic capacitors, composition resistors and film resistors are fabricated as pellets 98 mils in diameter and 63
mils thick. These are loaded into channels
in the machine, then are transferred into a nest as the machine operator depresses the keys. The pellet-fitted nest is resistancewelded on one side to a connector grid punched from solder-coated copper. The pattern is then lifted from the nest, another grid is sol-
dered to the other side and the circuit is encapsulated. A binary divider is shown. Mallory will also introduce prepackaged silicon rectifier circuits.
Among other miniature components are Fansteel Metallurgical Corporation's solid tantalum micromodule capacitors. Ratings are 0.01 to 50 iLf. The company is also showing sintered tungsten wafers for semiconductors and pushbutton cricket switches and parts.
Facilogic modules which can be used for breadboarding, personnel training or specialized equipment assembly will be introduced by the Data Systems division of HarmonKardon, Inc. Some 33 modules, con-

22

electronics

ROOM TEMPERATURE PEEL STRENGTH

PEEL STRENGTH LBS/IN

5

10

15

TIME, SECONDS AT 500° F

Comparison of peel strengths of

Syuthane's GlOR and GlO laminates

at 500 F

Silicon controlled rectifier stacks made by GE. Largest one uses six aluminum extrusions

taming up to four logic functions each, go into a metal frame. Up to 1,320 modules will fit into a rack.
Connections can be made to fronts or rears of the units. A system can be breadboarded from the front with pin-jacks, while semipermanent wiring is placed at the rear. Circuits are printed on the modules. Circuits are available for 250 Kc, 500 Kc and 5Mc. One power supply will operate up to 100 modules.
Automatic Electric has come up with an economical memory relay for multielement code systems. Four relays are mounted on acommon heel piece. Each of four coils is equipped with a separate armature that operates on one bifurcated contact spring. The device will translate or store any binary number from 1 to 24 or will send digital or binary information.
Barber Coleman Co. is showing a
brushless d-c motor based on a shaded-pole motor. A simple tran-
sistor oscillator converts d-c to a-c to drive the motor. One use is in fan and blower cooling systems for electronic equipment.
International Resistance Co. is
introducing a NOR unit with four inputs and four outputs. Containing a transistor, diode, capacitor and resistors, it can be used to build complete logic elements and combine those, in turn, into large or small switching systems for data reduction, computers, instrumentation and control circuits. Among
logic elements which can be built

up with the units are binaries, mul- tural adhesives, to avoid high-tem-

tivibrators, half-adders, counters perature peeling and wire failures

and shift registers. Units operate during dip soldering. With 2-oz

with pulse widths of 1-psec and copper foil measured on and

maximum full-load delay of 0.1 widths, peel strength is 2 to 4 lb

psec.

at 500 F.

Time & Frequency has an elec-

tronic tuning fork oscillator pack-

aged in a vacuum tube without

oven. It uses a silicon transistor

oscillator, has a frequency range of 400 cps to 12 Kc, is accurate to 1

IRE-AIEE Merger Will

ppm at 26 C and 50 ppm at --54 C

Be Discussed at Session

to 125 C.

James Electronics Inc. is showing MEMBERS of the IRE will have an

its light-actuated choppers, for d-c opportunity to ask questions about

modulation, relay and similar appli- the proposed consolidation of the

cations. The chopper uses two IRE and AIEE during aspecial ses-

photoresistors and alternately flash- sion on the opening day of the IRE

ing light sources to produce asingle Convention. The session will be

pole-double throw switching action. held Monday morning, March 26, in

The company says electrical noise the grand ballroom of the Waldorfis low, there is no mechanical vi- Astoria Hotel.

bration and modulating efficiencies

The discussion will be conducted

are up to 98 percent.

by a panel comprising the eight-

Among the battery displays are man joint committee which was

44 types for transistor equipment formed by the boards of directors

by Burgess Battery Co. They are made up of eight basic types of individually sealed wafer cells that

of the two societies to study the proposal. No registration fee is required for this one session.

can be stacked in metal cans to meet

If the societies and their mem-

virtually any requirement, the company says.

bers approve the consolidation, it would be effected on January 1,

Andrew Corp. is showing two 1963. The counterpart of the IRE

high-temperature coaxial cables for Convention would be an Interna-

aircraft, missiles and space vehi- tional Convention and Electrical

cles. Spiral-wrapped dielectrics are and Radio Engineering Show, prob-

quartz-filled Teflon, for 350 C serv- ably held in New York each spring.

ice, or braided silica, for 825 C.

Attendances of 100,000 would be ex-

Synthane Corp. will exhibit anew pected at the combined show, comgrade, G-10R, of laminate for pared to the 70,000 anticipated this

printed circuits. It uses no struc- year for the IRE meeting.

March 9, 1962

23

You visit tlw ME Show to get answers

And Leach Corporation wants to make your search easier. If you have design problems in Data Recording, Telemetry, or Electronic /Electromechanical Switching and Control, Technical Specialists from Leach's Relay Division and Electronics Division will travel to New York during the show to meet with engineers on special problems. Can we arrange a conference for you with one of them?

Problems in sensitire or high performance relay and control applications, telemetry, miniaturized data recording?
Leach Technical Specialists would like to confer with you if you have design problems in
Telemetry receivers (acceptance of electrical signals).
Subminiature Relays including crystal can, pico and mona types.
Magnetic recorders (permanent storage).
Time delay and matrixes (temporary storage).
Solid state relays and control devices.
Extremely sensitive relays for computers and data processing applications.
Logic modules and programmers (switching and routing).
Amplifiers, VCO modules (signal conditioning). Ground playback equipment (presentation).

Technical specialists will arrange conferences by appointment.
A conference will be arranged in advance to save your time. Simply complete the Conference Appointment form in the lower part of this page or call collect to the New York Office. Leach will confirm the date and hour to you by mail or telegram.
New products to be shown
When you visit the Coliseum, we'd like to demonstrate (at Booth 1900) several new products in missile telemetry, miniature high-environmental tape recorders and high performance relays.
LEACH CORPORATION
18435 Susana Road, Compton, California

Conference Appointment

LEACH CORPORATION 405 Lexington Avenue, Suite 3204 New York 17, New York Telephone: YUkon 6-2520
Please arrange for me a conference on the subject of: D Telemetry receivers (acceptance of
electrical signals). D Logic modules and programmers (switching
and routing). El Amplifiers, VCO modules (signal conditioning). D Time delay and matrixes (temporary storage). D Magnetic recorders (permanent storage). D Ground playback equipment (presentation).
Solid state relays and control devices.

D Subminiature Relays including crystal can, pico and mona types.

Extremely sensitive relays for computers and data processing applications.

Other or specific individuals you would like

to see

Best times for me are Day

,

or Day

,Hour

Please confirm my appointment to me:
NAME FIRM ADDRESS ADDRESS WHILE AT IRE SHOW

24

CIRCLE 24 ON READER SERVICE CARD

electronics

THIS NEW VOLTMETER WAS DESIGNED BY 15,000 CUSTOMERS

You had ahand in the engineering of the FLUKE MODEL 825A DC DIFFERENTIAL VOLTMETER. Customer suggestions spanning seven years and 15,000 differential voltmeters have helped create the most versatile and reliable instrument of this type ever offered. Beginning with an overall accuracy of ±0.025%, this advanced model features these significant advantages: recorder output -- no zero controls -- taut band meter suspension -- flow soldered glass epoxy printed circuit boards. To fully utilize the inherent advantages of high accuracy differential voltage measurements, Fluke Model 825A provides two major features not found in other instruments: 1. Infinite input impedance at null from 0 to plus or minus 500 VDC; this feature is extremely important since all voltages to be measured have significant source resistance. With the Model 825A operated at null, there will be no measurement errors due to circuit loading. The majority of other voltmeters provide a maximum of 10 megohms input impedance. Should the unknown voltage have a source resistance in the order of 5000 ohms, the measurement error due to source loading only will be at least 0.05% and does not include the basic error specification of the voltmeter itself.

2. Polarity reversing switch: A feature that enables you to measure either positive or negative voltages with equal ease. This is not merely apolarity reversal offront panel binding posts--but rather the internal 500 V reference supply is made either positive or negative with the front panel switch. This effectively provides you with two voltmeters for the price of one.

PARTIAL B25A SPECIFICATIONS

OVERALL ACCURACY·

±0 025%

MAXIMUM FULL SCALE NULL METER SENSITIVITY: . / MV

MAXIMUM NULL METER RESOLUTION:

5uv

STABILITY OF REFERENCE SUPPLY: ±0.005% per hour after warmup or ±0.005% for ±10% line voltage change.

REFERENCE ELEMENT: . Standard cell (zener diode optional)

INPUT VOLTAGE: . . 117/234 VAC ±10% from 50 to 400 cps

Write, wire or phone for short form catalog F-162

FLUKE John Fluke Mfg.
Company, Inc.

INSTRUMENTS

Seattle 33, Wash.

Box 7428

PR. 6-1171

TWX -- Halls Laic(

TLX-852

SEE THE ENTIRE LINE OF NEW FLUKE INSTRUMENTS/COMPONENTS * IRE SHOW BOOTH 3229-3231 CIRCLE 25 ON READER SERVICE CARD

Type 661

SIMPLIFY
YOUR PULSE-SAMPLING MEASUREMENTS
with this NEW Tektronix
Dual-Trace Oscilloscope

TYPE 661 OSCILLOSCOPE

t. . mow

--· · --

TYPE Sil TIMING UNIT
mr,emee moot.",

Here's what you can do:
... Trigger internally--observetheleading edges of both A and Btraces. Matched internal delay lines in both channels assure accurate time comparisons.
... Measure pulse risetimes with 0.35 nanosecond response in both channels. Timemeasurement range extends to 1millisecond.
... Display repetitive signals on 16 calibrated equivalent sweep rates from 1 nsec/cm to 100 µsec/cm, accurate within 3%. Magnifier provides sweep expansion from 2 to 100 times ... time per dot remains the same for digital readout.
... Change the probes' signal source without affecting the dot transient response.
... Reduce time jitter and amplitude noise, if needed, on the more sensitive vertical ranges and faster sweep rates by means of asmoothing control.
... Measure millivolt signals in the presence of a substantial dc component by means of a dc-offset voltage monitorable at the front panel.
... Calibrate with amplitude signals available from the front panel. Calibrate with timing signals traceable to National Bureau of Standards.
... Show lissajous patterns in addition to single and dual-trace displays and signals added algebraically.
... Drive X-Y plotters or similar readout accessories. Drive external equipment, with fast delayedpulse output. Add plug-in units as they come along.

mbroruernrer CAUMAMY
For complete information -- please call your Tektronix Field Engineer.

Here's how you do it:

1 Plug in the power cord and signal source,
2 Set the controls on the vertical and timing plug-in units,
3 Take the measurements.

In one compact laboratory oscilloscope you have a complete pulse sampling system with
risetime of 0.35 nanosecond. Using the 502 inputs, or the Tektronix passive probe or cathode-
follower probe designed for use with the instrument, you can meet most of the general-purposemeasurement demands in repetitive-signal applications.

Type 661 Oscilloscope (without plug-ins) $1150

Type 4S1 502 Dual-Trace Sampling Unit $1430

Type 5T1 Timing Unit

$ 750

Probes:

Type P6026 Passive Probe.

$ 140

Type P6032 Cathode-Follower Probe. $ 160

P.C.'S, U.S. Sale:,

f.o.b. B.,1,ert011, Oregon

Tektronix, Inc. P.0. BOX 500 ·BEAVERTON,OREGON I Mitchell 4-0161 ·TWX--BEAV 311 ·Cable: TEKTRONIX
TEKTRONIX FIELD OFFICES: Albuquerque. N. Mex. ·Atlanta. Ga. ·Baltimore (Towson) Md. ·Boston (Lexington) Mass. ·Buffalo, N.Y. ·Chicago (Park Ridge) III. ·Cleveland, Ohio ·Dallas. Texas ·Dayton. Ohio Denver. Colo. · Detroit (Lathrup Village) Mich. · Endicott (Endwell) N.Y. · Greensboro. N.C. · Houston. Texas · Indianapolis, Ind. · Kansas City (Mission) Kan. · Los Angeles, Calif. Area (East Los Angeles Encino ·Pasadena ·West Los Angeles) ·Minneapolis, Minn. ·Montreal.Ouebec,Canada ·New York City Area (Albertson. L.I., N.Y. ·Stamford,Conn. ·Union, N.J.) ·Orlando, Fla. ·Philadelphia, Pa. ·Phoenix (Scottsdale) Are. ·Portland, Ore. ·Poughkeepsie, N.Y. ·San Diego, Calif. ·San Francisco, Calif. Area (Lafayette ·Palo Alto) ·Seattle. Wash. ·Syracuse, N.Y. ·Toronto (Willowdale) Ont., Canada ·Washington. D.C. (Annandale.Va.).
ENGINEERING REPRESENTATIVES: Kentron Hawaii Ltd., Honolulu. Hawaii. Tektronix is represented in twenlyifive overseas countries by qualified engineering organizations. European and African countries, the countries of Lebanon and lackey, please contact TEKTRONIX INTERNATIONAL A.G., Terraseenweg 1A, Zug, Switzerland, for the name of your local engineering representative.
Other Overseas areas, please write or cable directly to Tektronix, Inc., International Marketing Department, P. D. Bo: 500, Beaverton, Oregon, U.S.A. Cable: TEKTRONIX.
SEE THE LATEST TEKTRONIX INSTRUMENTS AT THE IRE SHOW--BOOTHS 3502-3508

26

CIRCLE 26 ON READER SERVICE CARD

electronics

RMIC 275

pi
TYPE C
Temperature compensating type that meets or exceeds EIA RS-198 specifications. Rated at 1000 working volts.

TYPE B
Designed for by-passing, coupling or filtering applications. Manufactured in capacities between .00015 and 04. MFD.

DISC

TYPE JF
Feature a superior frequency stability over similar types. Available in capacities between 150 MMF and 10,000 MMF.

TYPE JL
Exhibit minimum capacity change over extreme temperature range. Change is only -±7.5% between --60 and +110° C.
March 9, 1962

FIN-LOCK LEADS
Special leads for printed circuits. Eliminate lead crimping. Available on all DISCAPS of standard voltages, ratings and spacing.

TYPE SM
For use in applications where limited space is aprime factor. Meet all specifications of EIA RS-198 for Z5U capacitors.

DISCAP CERAMIC CAPACITORS
L

RADIO MATERIALS COMPANY

GENERAL two RMC

A DIVISION OF P. R. MALLORY

CO., INC.

OFFICE: 4242 W. Bryn Mow, Ave., Chicago £6, III.

Plonts Devoted ExclutIvely to Cerotooe C.:loot:tort

FACTORIES AT CHICAGO, ILL. AND ATTICA 11467-1

See us in Booth 1414 I.R.E. SHOW

CIRCLE 27 ON READER SERVICE CARD

27

don't waste our memory experience!

ee t, i 111 d 'cl e cei "4, · d
l cI

Whatever your needs -- cores (toroid or multi-aperture), planes, stacks or complete memories -- you owe it to yourself and the

project to see how we can help. · Magnetism is our business. For the record, we discovered and patented the first ferrite

memory core, have pioneered developments in miniaturization, temperature control, switching times, logic circuitry, resistance

to severe environmental conditions, and the application of multi-aperture devices to logic functions. u This experience backed

by complete, specialized production and testing facilities can help you build maximum reliability into your systems. For a

complete file of engineering data on our memory products, phone or write Electronics Division, Keasbey, New Jersey.

INDIANA GENERAL E"

Visit us at the IRE show -- Booths 1310-1316

...---

,dir

,

··------FERRITES

MEMORY PRODUCTS

MEMORY PRODUCTS

28

CIRCLE 28 ON READER SERVICE CARD

MINIATURE MOTORS

Lig
PERMANENT MAGNETS

CIRCLE 29 ON READER SERVICE CARD

NEW!

Model CFI 1,000 to 10,000 mc

Model CFI 950 to 11,260 mc

TRANSISTORIZED CALIBRATED FIELD INTENSITY RECEIVER...

FUNCTIONS AS A MULTI-PURPOSE MICROWAVE RECEIVER, TOO!

This is the Polarad Model CFI--the latest in field intensity measurement test equipment. It's transistorized for portability.., excellent for airborne applications. The built-in impulse calibrator enables RFI

As an all-purpose receiver, the CFI offers AM, FM, CW and Pulse capability. These features make this the most versatile receiver you've ever used: 3 impulse bandwidths; 70 db dynamic range; sensitivity

measurements in accordance with latest militar) requirements. Plug-in tuning heads under develop-

--90 dbm; direct reading meter circuits. You can use the CFI for all general laboratory and field work.

ment, will extend the frequency range beyond the present 1,000 to 10,000 mc capability.

Call your Polarad representative for a demonstration, or mail the card.

SEE POLARAD AT BOOTHS 3302-3308 AT THE I.R.E. SHOW

SPECIFICATIONS
FREQUENCY: 1,000 to 10,000 roc in four plug-in tuning units (950 to 11.260 roc as receiver) SENSITIVITY: to --90 dbm FREQUENCY DIAL ACCURACY: -, 1%. IMPULSE CALIBRATOR includes built·in irepulse generator, RF attenuator (-60 db), IF attenuator (0-20 db), in 1 db steps ANTENNA EQUIPMENT: 4 directive and 1omni.directional; mounting tripod OUTPU7S: Audio, Video and Recorder METER CIRCUITS: Average and slideback peak, directreading peak and quasi-peak INTERNAL CALIBRATION SIGNAL: Impulse type; 1 to 10 gc
0.5 db flat output IMPULSE BANDWIDTHS: 1 mc, 5 roc, and 8 mc VIDEO BANDWIDTH: 3.5 mc IMAGE REJECTION: 60 db POWER INPUT: 12 volts DC; 115 volts AC; 50 to 420 cps
POLARAD

ELECTRONICS CORPORATION IM

SERVICE, c 43 20 34TH STREET, LONG ISLAND CITY 1, NEW YORK

P.E.C.

MAIL THIS CARD FOR SPECIFICATIONS

ABGDE

POLARAD ELECTRONICS CORPORATION 1 2 .3 4 5 6 7 8 910

Please send me information and specifications on:
n Model CFI Calibrated Microwave Field Intensity Receiver

I: Model TR Microwave Receiver

(see reverse side of page)
n Model IC-120 MicroWave Impulse Generator

(see reverse side of page)

F
11 12

MY APPLICATION IS Name Title Company Address City

Mail Station Zone

Dept. State

NEW...TRANSISTORIZED

MODEL TR 950 TO 11,260 mc

MODEL IC-120 1,000 cps to 10 gc

MAIL THIS CARD FOR SPECIFICATIONS

Postage Will be Paid
by Addressee

No Postage Stamp
Necessary If Mailed in the United States

BUSINESS REPLY CARD
First Class Permit No. 18, Long Island City, N. Y.
POLARAD ELECTRONICS CORP. 43-20 34th St., Long Island City 1, N.Y.

THIS IS THE MICROWAVE RECEIVER POLARAD MADE BETTER!
We started with areceiver that will perform 4basic functions--AM-FM receiver; pulse and pulse-position demodulator; field intensity receiver; and asensitive microwave power meter. Then we transistorized most of the circuitry, and equipped it to operate at 12 volts D.C.
To all this we added achoice of three impulse bandwidths, greater sensitivity, a70 db dynamic range, standard weighting circuits, slideback peak feature and an aural tuning aid.
Frequency coverage is accomplished with 4true plug-in tuning heads, with greater frequency range to come in new tuning units under development. All in all the most advanced, versatile microwave receiver you can own. Get ademonstration from your local Polarad Representative, or mail the card.
New Transistorized Impulse Calibrator Adapts Your Receiver For Field Intensity Work
Model 1C-120 (1000 cps to 10 gc) can operate with your Model TR Receiver to make calibrated field intensity measurements. It can also be used for noise measurements, bandwidth determination, and as asignal source for spectrum analyzers.

SPECIFICATIONS

SENSITIVITY: to --90 dbm. FREQUENCY DIAL ACCURACY: ±- 1%. IMAGE REJECTION: 60 db. IMPULSE BANDWIDTHS: 1 mc, 5 mc, 8 mc. VIDEO BANDWIDTH: 3.5 mc. OUTPUTS: Audio, Video, Recorder. GAIN STABILITY With AFC: -± 2 db. WEIGHTING CIRCUITS: Average, Slideback, Quasi-Peak, and Peak. SLIDEBACK CONTROL: For aural indication of peak amplitude. POWER INPUT: 12 volts DC; 115 volts AC; 50 to 420 cps

POLARAD

ELECTRONICS CORPORATION "'"um"" SERVICE 43.20 34114 STREET, LONG ISLAND CITY I, NEW YORK

P.E.C.

SECOND BEST?

That's the Corning CYFM capacitor. It's topped only by the Corning CYFR--the first one that completed the Autonetics/ Minuteman hi rel program.
We learned how to make the CYFM while working to improve reliability. It's electrically and environmentally interchangeable with the CYFR. The major difference is price, and that's because we use refined processes on the CYFR for applications requiring guaranteed failure rates and reliability.
All in all, the CYFM is a positively sealed capacitor for complete environment-proof performance (it goes far beyond MIL-C-1 1272B), and it sells for less.
Developmental testing of the CYFM went 6,000,000 test hours, and included load life, boiling salt, salt spray, fluxes, and solvents.
You can get its reliable capacitive element of foil and ribbon glass, frozen inside glass with hermetic seals at the
See us at the I.R.E. Show, Booths 2623-2625
-< -CIRCLE 30 ON READER SERVICE CARD

leads, in four types. The cvFm-10 gives pf values from 0.5 to 300; CYFM-15, 220 to 1200; CYFM-20, 560 to 5100; cYFm-30, 3600 to 10,000. Your Corning distributor can give you fast delivery at factory prices.
But, when you must have the ultimate in guaranteed reliability to your specifications, specify the CYFR. available in the same sizes and capacitance range. The CYFR is second to none.
For complete information, write for data sheets to Corning Glass Works, 539 High St., Bradford. Pa.
CORNING
Electronic Components

CIRCLE 31 ON READER SERVICE CARD

31

PREVIEW OF EXHIBITS:
INSTRUMENTATION AND SYSTEM COMPONENTS

Event-time recorder idles until it gets an input signal, then records up to 10 events asecond
ITT sampling oscilloscope being used to test power conversion module of Ranger spacecraft
Waveforms, Inc., transmission meter gives direct readings in dbm

NEW YORK--This year's IRE show
will match 1961's in size-850 exhibits occupying all four floors of
the Coliseum--and in value of equipment displayed--about $15 million.
Systems developed for the industry's biggest customer, the government, will again provide some of the top-drawing displays. But the bread and butter exhibits will center on the gear that electronics companies sell each other.
Many of the instruments and system components slated for introduction are outlined below. For details on other new products, see the section beginning on page 144 of this issue.
A sampling oscilloscope able to fully display transient waveforms from d-c through 5 Mc will be shown by ITT. It uses magnetic de-
flection of a 14-in, rectangular crt. A random sampling technique as-
sures that a-c waveshapes, low and sonic frequencies are displayed completely. Spot size of less than 0.5 mm is obtained by gun design and high accelerating potential.
Vertical and horizontal channels
have interchangeable pre-amplifiers. Additional plug in units, including
dual trace and high gain d-c amplifiers will be made available. Transistors are used in over half the circuits.
Weston Instruments div. of Daystrom, Inc. will show a 50-channel event-time recorder that operates only when an event signal is applied. It facilitates interpretation
of monitored signals and conserves chart paper. The chart moves only
when a signal is received. Simultaneous time indications

32

electronics

Digital voltmeter-ratiometer by Kin tel uses mercury-wetted relays and solid-state circuits, has accuracy of 0.1 percent at a-c and 0.01 percent at d-c

are displayed on each channel at a

maximum recording rate of 10

events per second. Developed for

use with multi-input control sys-

tems, it is suitable for process con-

trol and missile launching applica-

tions. Transistor, modular subas-

semblies are employed.

A line of meters using taut band

suspension movements will also be

introduced by Weston. The taut

band system are dimensionally in-

terchangeable with pivot-and-jewel

movements, but are claimed to im-

prove sensitivity, repeatability and

ruggedness.

Texas Instruments' Apparatus

division will display a medium-fre-

quency oscillograph recorder that

features rectilinear writing on roll

or Z-fold paper with either ink or

heat methods. The device has tran-

sistor circuits, uses interchangea-

ble plug-in input units, provides

high sensitivity, common-mode rejection and high impedance. A two-

ing the direct carbon transfer writing technique will be shown by

channel model with eight chart American Optical Company's In-

speeds will be shown.

strument division. One is a single-

An all solid-state analog-to- channel portable unit with a fre-

digital converter, designed for data quency response from d-c to 90 cps

acquisition systems, processing con- at 30 mm peak-to-peak. It weighs

trol and data processing systems, 20 pounds, looks like atape recorder

can be modified for many digital and features pushbutton four-speed data handling applications, TI says. chart control. Two other models are

Its speed is 1.5 »set per bit.

two-channel and three-channel ver-

Two pulse generators are being sions of this, with interchangeable

displayed. One model features rep- preamplifiers.

etition rates of 2.5 to 25 Mc. Rise

An eight-channel console unit,

time is 6 nsee and width and delay will also be introduced. It has afreare variable coincidentally. Ampli- quency response of d-c to 100 cps

tudes from two separate outputs, 0 to 5 y and 0 to --5 v, are in-

flat within 1 percent. Amplitude calibration is accomplished by push-

dependently variable. The second model is a combina-
tion of specific modules. Pulse repetition frequency is from 100 cps to
5 Mc. Pulse can be delayed over a 20 to 1,000-nsec range. Rise time is

button injection of a square wave, accurate to 1 percent of any position of the fixed sensitivity control. Chart speeds from 1to 250 mm per
second can be selected. Sensitivity of this unit is 1 volt per cm and

variable from 20 nsec to 1»sec. Fall time is variable over the same
range.

linearity is 0.5 mm maximum. Alden Electronic & Impulse Re-
cording Equip. Co. will demonstrate

TI is also showing a table-top machine for high-volume, single device or batch testing of avariety of transistors and diodes. Only two controls are required. Prewired
plug-in boards handle programming.
Four oscillograph recorders us-

how sonar input signals taperecorded during an oceanographic expedition are fed into a precision graphic recorder. The recorder was
developed jointly with scientists at Woods Hole Oceanographic Institute. The firm will also show other recorders used in meteorology, navi-

vation, geophysics and other fields. Among components to be shown
by Leeds & Northrup Co. is a phase sensitive a-c to d-c controlling converter. The unit is packaged in a fist-sized plug-in assembly. Input impedance is 500 ohms, output impedance 10,000 ohms. When d-e output is --4 to +4 volts, output linearity is ± 2 mv. Nominal a-c to d-c gain is 2.
L & N is also displaying a highgain, solid-state d-e coupled, operational amplifier. Built on a plug-in
card, it can be adjusted for various functions by different input and feedback network configurations.
These are on cards that plug in to the amplifier. Maximum amplifier output is ± 10 volts d-e, with a d-c linearity of 0.1 percent.
Hewlett-Packard is showing a10cps to 1-Me solid-state oscillator with apush-button frequency selector. Three switches, each controlling a single digit, choose 900 base frequencies from 100 to 999, while a fourth selects any decade mult-
plier from x 0.1 to x 1,000. It uses negative feedback for stabilization and a biased-diode control to maintain output level independent of frequency. Frequency accuracy is 1 percent and output constancy 2.
A stabilized voltage standard by

March 9, 1962

33

Reeves Instrument's tumbling table checks single-axis inertial gyros. Tachometer feedback controls rate loop second order effects

BRAKE SURFACE

CAPSTAN

PAPER TAPE

PCLUOSSHE-DPUMLALGNET FORCE FIELD High -speed photoelectric tape reader by Rheem Electronics has roller brake assembly suspended in a push-pull magnetic field. It will stop in 0.5 msec

American Optical Company's carbon transfer oscillographs look like tape recorders
Sensitive Research Instrument says its precision potentiometer will measure to 2.0999999 yin steps of 0.1 gt,without switching ranges 34

the Kintel division of Cohu Elec- maximum current of 22 ma. Har-

tronics, Inc. covers the range from monic power outputs ranging from
0to 111.1110 volts in steps as small odbm to --40 dbm are provided,

as 1¡iv. The instrument employs a depending on the model, with an in-

chopper circuit and stable reference put of 100 -± 20 milliwattts.

voltage to achieve stability of 0.005

Transmission measuring set with

percent and an accuracy of within a built-in, low-distortion oscillator

0.01 percent of dial setting. It is covering the range from 20 cps to

one of several products to be dis- 20 Kc will be introduced by Wave-

played, including aclosed-circuit tv forms, Inc. Levels of from +20

gear, adigital voltmeter-ratiometer dbm to --70 dbm are available to

and a solid-state, digital d-e volt- drive lines from 37.5 through 600

meter.

ohms, balanced or unbalanced. Both

A transistor digital clock for 150 and 600-ohm lines may be

time display and control applica- matched or bridged and levels from

tions will be shown by Non-Linear +40 to --10 dbm read. Panel meter

Systems, Inc. The clock may be com- readings are directly in dbm at all

bined with other equipments in the input and output impedances.

NLS line to create automatic data

Other transmission measuring

loggers, testing and other systems. sets include a unit that converts

Time is measured in hours, min- any audio oscillator into an audio

utes, and seconds up to 23 hr, 59 signal generator able to match cir-

min, 59 sec. Other ranges are also cuits from 37.5 through 600 ohms

availablle.

balanced or unbalanced. Another set

The firm will also show aclamp- is designed for voice and carrier

and-hold digital voltmeter that can frequencies.

provide four-digit measurements of

The firm will also show a sine-

varying voltages to an accuracy of wave oscillator with decade attenu-

± 0.01 percent -± 1 digit, in three ator and fine output control, cover-

ranges up to ± 999.9 v. Slewing ing the frequency range from 5cps

rate of the instrument is 1,000 yper to 600 Ke, on a 5 to 50 decading

second, input impedance is 10 format.

megohms. NLS will also introduce

A group of power supplies to be

a low-cost four-digit digital volt- shown by Kepco, Inc. include a0-36

meter with -± 0.01 percent full-scale v, 30-amp dual regulated unit. Rip-

accuracy.

ple output is less than 1 mv, with

A series of stable microwave os- regulation of better than 0.05 per-

cillators with short-term stability cent. Recovery time is less than 50

of five parts in 108 peak deviation eisec.

and long-term stability of one part

A calibrated, tunable, infrared

on 104will be introduced by Labora- signal generator will be shown by

tory for Electronics Inc. The instru- Telewave Laboratories, Inc. With

ments employ transistors, a triode an output power to 10 ¿Lw and

and cavity. Coverage from 1to 3Ge variable wavelength from 1 to 14

is provided by eighteen models, each microns, the instrument is suited

covering a 200-Mc increment.

for lens testing, resolution meas-

A vhf-uhf noise generator shown urements, detector and system fre-

by PRD Electronics, Inc. will pro- quency response measurements.

vide noise-figure readings on a Modulation by a square wave of

front panel meter over the range of stable nature, from 2 to 2,600 cps

0to 20 db. A klystron power supply is available. A tungsten source

providing all operating voltages, with short time constant is used.

with afront panel meter for read- Both collimated beam and point

ing beam voltage or current, will be source output are available.

introduced. The company will also

Transistor portable deviation me-

display a series of signal sources, ter covering 20 to 500 Mc will be employing reflex klystrons, external introduced by Motorola for servic-

cavities and self-contained power ing f-m two-way radio. Deviation

supplies.

ranges of 1.6, 8 and 16 Ke may be

A series of varactor harmonic read full scale, with ± 5 percent

generators will also be shown by accuracy on the latter two. Unit PRD. Included are five types that can operate from 117 volts a-c or

cover the frequency output range as a portable from two internal

from 4to 40 Kmc. They use avar- mercury batteries. -- LHD, LDS,

actor bias of 6to 8volts d-c, with a HCH, CMW, TM

electronics

IRE Presents Six
Awards at Banquet
PRESENTATION of six awards and 78 fellows citations to leading engineers and scientists will be one of the high points of the IRE's Golden Anniversary Banquet March 28 in the grand ballroom of the WaldorfAstoria Hotel.
The highest award, the 1962 Medal of Honor, will go to Edward V. Appleton, principal and vice chancellor of the University of Edinburgh, Scotland, for his "distinguished pioneer work in investigating the ionosphere by means of radio waves." He won aNobel Prize in 1947 for his work in physics.
Victor H. Rumsey, professor of electrical engineering, University of California, receives the Morris N. Liebman Award for arecent contribution to the radio art. Rumsey made basic contributions to development of frequency-independent antennas.
The Browder J. Thompson Award, for the best IRE technical paper by an author under 30, goes to Henri B. Smets, European Nuclear Energy Agency, Paris, for "Analysis and Synthesis of Nonlinear Systems."
The Harry Diamond Award to a person in government service, goes this year to William Culshaw, of National Bureau of Standards, for accomplishments in microwave optics and interferometry.
George A. Morton, of RCA, wins the Vladimir K. Zworykin Award for contributions to tv. Morton was cited for developments in camera and imaging tubes.
The W. R. G. Baker Award for the best transactions paper goes to Marvin Chodorow and Tore WesselBerg, of Stanford University, for "A High-Efficiency Klystron with Distributed Interaction."
The awards will be presented by Patrick E. Haggerty, IRE president and president of Texas Instruments. Thomas F. Jones, Jr., head of the School of Electrical Engineering, Purdue University, will be spokesman for the fellows.
Gen. David Sarnoff, RCA president and former IRE secretary, will be the principal speaker at the banquet.

4,640 5,I10

400 TO 1,000 'N1,00te\, up
R4 I
Vv

TUNING FORK RESONATOR

SYMBOL of

PRECISION

Why has the PHILAMONe Tuning Fork become the Symbol of Precision for frequency and time standards?
Because of its appearance? Hardly. You'll never see the fork--it is hermetically sealed in an evacuated steel container.
PERFORMANCE is the reason. The only reason.
Everything -- Philamon's patented design, premium materials, meticulous workmanship and exhaustive testing-- is aimed at one goal.
Producing aTuning Fork Resonator which will generate and keep on generating aprecise signal.
It is this single-minded emphasis on performance that has given Philamon Laboratories--
For complete information,

A Reputation for Dependable Frequency Control.
Made to MIL and commercial standards, Philamon's Patented Tuning Fork Resonator is available as a separate component or as the heart of a Philamon Frequency Control Package. These silicon-transistor, modular packages give you awide choice in preselecting a signal for frequency, accuracy, output voltage and waveshape.
If you have a problem that lends itself to the capabilities of a Tuning Fork Resonator--an instrument also superb as a narrow bandwidth filter--our engineers
can, and would like to, help you solve it.
write, phone or wire:

PUILAMON LAI1Olt_ITOItIES INC.
90 HOP PER STRE ET · WES TBURY , LON G ISLAND , N .Y.
A REA C ODE: 516 ED cEwooD 3-1700 /TWX : WBRY 5103/ FAX : LPU

M arch 9, 1962

CIRCLE 35 ON READER SERVICE CARD

35

IFILIMIST421FI
METAL FILM RESISTORS OFFER 5TEMP. COEFFICIENTS TO MEET ALL CIRCUIT
REQUIREMENTS
RUGGED END-CAP CONSTRUCTION FOR LONG TERM
STABILITY
EXCEPTIONAL RESISTANCE TO MOISTURE AND MECHANICAL DAMAGE SURPASS MIL-R-10509 PERFORMANCE REQUIREMENTS

Providing close accuracy, reliability

and stability with low controlled

temperature coefficients, these

molded case metal-film resistors out-

perform precision wirewound and

carbon film resistors. Prime charac-

teristics include minimum inherent

noise level, negligible voltage coeffi-

cient of resistance and excellent

long-time stability under rated load

as well as under severe conditions of

humidity.

Close tracking of resistance values

of 2 or more resistors over a wide

temperature range is another key

performance characteristic of

molded-case Filmistor Metal Film

Resistors. This is especially impor-

tant where they are used to make

highly accurate ratio dividers.

Filmistor Resistors, in

'A, 1h

and 1watt ratings. surpass stringent

performance requirements of MIL-

R-10509D, Characteristics C and E.

Write for Engineering Bulletin

No. 7025 to: Technical Literature

Section, Sprague Electric Co., 35

Marshall Street, North Adams, Mass.

For application engineering assistance,
write: Resistor Div., Sprague Electric Co. Nashua, New Hampshire

SPRAGUE®
THE MARK OF RELIABILITY
'Sprague' and '0' are registered trademarks of the Sprague Electric Co.

sNivé· Re
e
41.,1,0
ires · efi
- 4,0 /ÀvNli3sSPECIAL

Recruiting: More Selective

NEW YORK--Advance reports indi- ment designers, solid-state engi-

cate that job-hunting and personnel neers and some classes of radar spe-

recruitment will again be one of the cialists.

favorite extracurricular activities

·Advanced data processing and

at the IRE Convention.

some missile guidance and control

The people organizing the show posts pay $14,000 to $18,000.

will try to keep actual recruiting ac-

·Experienced component design-

tivities within the Coliseum to a ers and military systems engineers

minimum. Exhibitors will be per- are probably worth $16,000 to

mitted to post five personnel list- $20,000.

ings on a special bulletin board, as

·Top men in specialized fields

in the past. However, show officials such as advanced servo systems, ra-

are 'asking that no recruiting inter- dar systems, communications equipviews be held in the display booths. ment, computer design and ad-

Checks made during the past sev- vanced component design are being

eral weeks with personnel special- offered better than $20,000 a year.

ists show that recruitment activi-

The relatively higher salaries in-

ties will not be as intense as in some dustry is willing to pay engineers

years past. This reflects the change has resulted in plans to raise pay

in the military procurement pic- for government service. Federal

ture, toward small quantities of pay would go as high as $28,000 a

highly specialized devices and systems.
Recent graduates, junior engi-

year (ELECTRONICS, p 12, March 2). Government agencies are major
employers of engineers, scientists

neers and nonspecialists will find and technical personnel. NASA

that they do not have as many job alone estimates it will need some

choices as in the past years. Re- 13,000 new trained people by 1970.

cruiters say that few companies The agency, for example, is now

stockpile personnel any more, low- trying to recruit 2,000 scientists

ering the demand for trainees.

and engineers for the new Manned

Engineers with experience will Spacecraft Center in Houston.

find job-changing possibilities

fairly good in such key specialties

as communications, computer design, semiconductors, automation

USSR Educates Twice as

systems, radar and advanced military systems.

Many Engineers as We Do

Salaries show a slightly rising WASHINGTON--National Science

trend. Here are some approximate Foundation has published an analy-

ranges for annual pay:

sis of Soviet education that indi-

·Recent graduates can generally cates the USSR is producing two

expect $6,500 to $9,000, depending to three times as many scientific

on degrees won and other indicators and professional graduates yearly

of proficiency.

as the U. S.

·Junior engineers with one or

The USSR has only half as many

two years experience are worth be- college graduates as the U. S. But

tween $7,000 and $10,000.

a greater percentage of graduates

·Men in the digital data equip- study science and engineering. The

ment field are commanding between Soviet rate of growth in these fields

$8,000 and $14,000.

is more than twice that of the U. S.,

·Among fields paying more than the study found.

$10,000 a year are instrument de-

We produce about 90,000 science,

sign, data transmission systems and engineering and applied science

environmental test systems. Sala- professionals a year. The USSR is

ries range up to $14,000 or $15,000. now graduating 190,000 a year and

·Salaries between $12,000 and is expected to step this up to 250,-

$16,000 are being offered tv equip- 000 ayear during the 1960's.

36

CIRCLE 36 ON READER SERVICE CARD

CIRCLE 37 ON READER SERVICE CARD--)-

NEW HIGH IN RELIABILITY

t ri

ri's-

EXCLUSIVE

HEATLESS SEAL RECTIFIERS
""511111111111,011115

This new line of heatless seal silicon rectifiers by Transitron, the originator of the silicon rectifier, brings to the electronic industry a notable new advance in the state of the art.
The reliability of internal rectifier junctions is now further enhanced because no heat is used to seal the packages. Cap and base are joined by the "cold flow" of copper into steel as the parts are forced together under high pressure. Rectifier junctions are no longer exposed to contamination by the sputtering or splashing of molten metals or by flux fumes and gases, weld flashes, or hot sparks. Therefore the new process creates the most reliable hermetic seal yet attained in silicon rectifiers. Consequently heatless seal rectifiers meet or exceed all required military and industrial tests for moisture resistance and hermeticity. Four series now in quantity production are available for immediate delivery.
For further information, write for bulletins indicated in the chart at right.

SERIES TYPE

.rn

TWICE SIZE
PEAK INVERSE VOLTAGE (VOLTS)

50

100

150

200

250

300

350

400

500

3AMP TYPES

151581 151582 (TM7) (TM)))

151583 (TM)))

151584 (TM37)

151585 (TM47)

151586 (TM57)

20 AMP TYPES 15248A 152498 TR152 15250A TR252 TR302 TR352 TR402

TR502

35 AMP TYPES

TR53 TRIO3 TR153 TR203 TR253 TR303 TR353 TR403

TR503

MILITARY TYPES

15253

IN254

15255

Bases and caps supplied by Standard Pressed Steel Co., Jenkintown, Pa.

600 151587 (TM67) TR602 TR603
15256

BULLETIN NUMBER
TE -1351F TE -1351K TE-135IK- I 7E-1336

Tra n§i-tron electronic corporation wakefield, melrose, boston, mass.
SALES OFFICES IN PRINCIPAL CITIES THROUGHOUT THE U.S.A. AND EUROPE ·CABLE ADDRESS: TRELCO For quantities 1-999 calf your nearest Transitron Industrial Distributor.

Meet us at
The IRE Show Booths
1720-1724

GUARANTEE of Ilualify
This GUDEBROD Lacing Tape is Manufactured under strict Quality Control. Complete test data is on file for your
08861 protection under Lot

o,ts·

ye

0,ire, MEETINGS
AHEAD

weET.
34

SPECIAL
IRON & STEEL INDUSTRY INSTRUMEN-
TATION CONFERENCE, Instrument Society of America; Hotel Roosevelt, Pittsburgh, Pa., Mar. 14-16.

EXTRA-HIGH VOLTAGE COMMUNICATION,
CONTROL & RELAYING, AIEE; Baker Hotel, Dallas, Texas, Mar. 14-16.

AUDIO ENGINEERING SPRING CONVEN-
TION; AES Ambassador Hotel, Los Angeles, Mar. 19-26.

IRE INTERNATIONAL CONVENTION, Coli-
seum & Waldorf Astoria Hotel, New York City, Mar. 26-29.

ENVIRONMENTAL TESTING SEMINAR For Engineers in the Instrumentation Field, Guiton Industries; at Guiton, Metuchen, N. J., Mar. 26-30.

THIS SEAL GUARANTEES YOU REAL LACING ECONOMY...
increased production with fewer rejects!

QUALITY CONTROL CLINIC, Rochester Society for Quality Control; University of Rochester, N. Y., Mar. 27.
ENGINEERING ASPECTS OF MAGNETOHYDRODYNAMICS, AIEE, IAS, IRE, Uni-
versity of Rochester; University of Rochester, N. Y., Mar. 28-29. ELECTRON BEAM SYMPOSIUM, Alloyd Electronics Corp.; Boston, Mar. 29-30.
QUALITY CONTROL ADMINISTRATIVE AP-
PLICATIONS CONFERENCE, American Society for Quality Control; University of Montreal, Montreal, Canada, Mar. 29-30.

Always specify Gudebrod whether you use one spool of lacing tape or thousands because Gudebrod lacing tape is produced under strict quality control. Gudebrod checks and rechecks every lot of tape to insure that it meets the highest standards ...higher standards than those required to meet MIL-T specifications.
Gudebrod helps increase your production because we carefully test, measure and maintain close tolerances on such characteristics as slip resistance, fray resistance, breaking strength, wax content, fungistatic effectiveness. These and other tests assure you that when Gudebrod lacing tape is used production increases. Knots don't slip ... harnesses stay tied ...assemblies remain firm ...there are fewer rejects!
Whatever your lacing needs--Teflon*, dacront, glass, nylon, high temperatures, special finishes--Gudebrod makes it or will produce atape to meet your special requirements. If you want atape to meet 1500°F ...Gudebrod Experimental Research Project 173 is the answer. If you want atape that meets MIL-T-713A ...Gudelace® (Style 18 Natural) is the answer.

ELECTRONIC & ELECTRICAL INDUSTRIAL-
COMMERCIAL EQUIPMENT SHOW, Electrical Manufacturers Representatives Assoc. of Michigan; Artillery Armory, Detroit, April 4-6.
CHEMICAL & PETROLEUM INSTRUMEN-
TATION SYMPOSIUM, Instrument Soc. of America; Du Pont Country Club, Wilmington, Delaware, April 9-10.
BUSINESS EQUIPMENT EXPOSITION, Business Equipment Manufacturers; McCormick Place, Chicago, April 9-13. PLASMA SHEATH SYMPOSIUM, AF Cambridge Research Labs; New England Mutual Hall, Boston, April 10-12.

MAKE THE H-R TEST! Write for samples of Gudelace or other Gudebrod
lacing tapes and have them tested in your harness room. Compare aharness tied with a"Quality Controlled" Gudebrod tape and any other tape. This test will convince you that when you specify Gudebrod you specify real economy--increased production with fewer rejects.
Write for our free Technical Products Data Book. It explains Gudelace and other Gudebrod lacing tapes in detail.

*Dupones TFE fluorocarbon fiber.

tDopont.'s polyester fiber.

t'a?

,.**reel***1.*4911111111111110reene***·/,

91M

GUDEBROD BROS. SILK CO., INC.

Electronics Division 225 West 34th Street New York 1, New York

Executive Offices 12 South 12th Street
Philadelphia 7, Pa.

Visit Gudebrod Booth 4032 at the IRE Show

SOUTHWEST IRE CONFERENCE; Rich Hotel, Houston, April 11-13.
JOINT COMPUTER CONFERENCE, IRE-PGEC,
AIEE, ACM; Fairmont Hotel, San Francisco, Calif., May 1-3.
HUMAN FACTORS IN ELECTRONICS,
IRE-PGHFE Lafayette Hotel, Long Beach, Calif., May 3-4.
ELECTRONIC COMPONENTS CONFERENCE,
IRE-PGCP, AIEE, EIA; Marriott Twin Bridges Hotel, Washington, D. C., May 8-10.
NATIONAL AEROSPACE ELECTRONICS CON-
FERENCE, IRE-PGANE; Biltmore Hotel, Dayton, Ohio, May 22-24.

38

CIRCLE 38 ON READER SERVICE CARD

electronics

Electronic Tube by Sylvania Electric Products Inc.

PRODUCE IT TODAY SELL IT TOMORROW
ANYWHERE IN THE U*S*A WITH

Tubes and 1001 other items, fly by AIR EXPRESS as routine. Why? Because overnight, door-to-door delivery (which only AIR EXPRESS offers, nationwide) steps up sales. Because gentle handling cuts packing costs and breakages. And there are other savings--on inventory, warehousing, insurance. All these benefits come at low rates. For example, $8.12 for 25 lbs., 1,000 miles! Insist on AIR EXPRESS for your shipments. It's the only air shipping service with priority on all 35 scheduled U.S. airlines, plus 13.000 R E A Express trucks for pick-up and delivery.
CALL YOUR LOCAL REA EXPRESS OFFICE FOR AIR EXPRESS SERVICE

CIRCLE 39 ON READER SERVICE CARD

CIRCLE 40 ON READER SERVICE CARD

A Tradition \
of Excellence
RESISTORS RHEOSTATS ·TAP SWITCHES VARIABLE TRANSFORMERS ·RELAYS TANTALUM CAPACITORS · R. F. CHOKES · DIODES
T
Request Catalog from OHMITE MANUFACTURING COMPANY
3637 Howard Street, Skokie, Illinois

VERSATIL E Multi-channel--telegraph Al or telephone A3
SIT'AIES IL E
High stability (.003%) under normal operating conditions
RUGGED Components conservatively rated. Completely tropicalized

,,..e)e.`o

e

Here's the ideal general-purpose high frequency trans-

e-c'e

mitter! Model 446, suitable for point-to-point or groundto-air communication. Can be remotely located from

operating position. Coaxial fittings to accept frequency

shift signals.

This transmitter operates on 4 crystal-controlled

frequencies (plus 2closely spaced frequencies) in the

band 2.5-24.0 Mes (1.6-2.5 Mes available). Operates

on one frequency at atime; channeling time 2seconds. Carrier power 350 watts, Al or A3. Stability .003%.

Nominal 220 volt, 50/60 cycle supply. Conservatively

rated, sturdily constructed. Complete technical data

on request.

Now! Complete-package, 192 channel, H.F., 75 lb.

airborne communications equipment by Aer-O-Com!

Write us today for details!

Also available -- Aerocom Model 1046 with 1KW nominal carrier power and Model 100TFA-100 watts

AER 0 COM

A-131

3090 S. W. 37th AVENUE

MIAMI 33, FLORIDA

-4--CIRCLE 41 ON READER SERVICE CARD

CIRCLE 42 ON READER SERVICE CARD

LOW NOISE
TWT EXTENDS
RADAR RANGE
A limitation on the effective range of aradar equipment is the noise level in the receiver: the limiting range is reached when signal to noise ratio approaches unity. The signal to noise ratio in the equipment cannot be better than that in the first stage, therefore the use of alow noise amplifying tube in that stage is of paramount importance.
SIC offers two tubes of eminently suitable design for use in S-band:
Type W9/2E for broadband coverage with again of 40 dB and noise facto' of about 8.5 dB. It is intended for operation over the whole frequency range 2.5 to 4.1 Gc/s with fixed voltages. An aluminium foil mount is available with coaxial r.f. connectors.
Type W10/3E for narrow band operation with about 23 dB gain and 6.8 dB noise factor with the grid voltages set for optimum noise factor at the appropriate centre frequency.
W10/3E has afrequency range 2.7 to 3.3 Gc/s in solenoid curcuit 495--LVA-003 with waveguide r.f. connectors or frequency range 2.8 to 3.8 Gc/s in solenoid circuit 495-- LVA-006 with coaxial r.f. connectors.

W9 2E

NEW BACKWARD WAVE OSCILLATORS
The new K- and Q-Band backward-wave oscillators in the STC range incorporate ad.c. isolator in the output ``aveguide to permit operation with grounded cathode as well as grounded output terminal. These oscillators are tuned purely by variation of the line (slow wave structure) voltage which may now be positive to ground. Two grids are provided for amplitude modulation: grid 2 set positive relative to cathode and grid 1at zero, or negative with a superimposed modulating signal requiring only low energy.
* SPECIAL ANNOUNCEMENT: Improvements to the K-band oscillator have more than doubled its original output power at the upper frequencies.
Type Y333/1E

ABRIDGED DATA

Band Valve Code Freq. Range Line Voltage Output Power

(Gc s)

(V)

(mW)

W10 3E with mount 495-LV A-006S

Y322/1E Y333/1 E

18-26.5 26.5 40

650-3000 700-3200

30 to 200 10 to 80

Write for Data Sheets to:

Standard Telephones and Cablos Limited

62 18MS

VALVE DIVISION: BRIXHAM ROAD · PAIGNTON · DEVON · ENGLAND USA enquiries for price and delivery to ITT Components Division, P.O. Box 412, Clifton, N.J.

ITT

March 9, 1962

CIRCLE 43 ON READER SERVICE CARD

43

ALL THIS...
Westinghouse high gain silicon transistor
GAIN OF 1000 OR MORE AT 2 AMPS II COLLECTOR CURRENT-10 AMPS ·
TRUE VOLTAGE RATINGS TO 150 VOLTS II HARD SOLDERED CONSTRUCTION II
FOR THERMAL FATIGUE RESISTANCE
CIRCLE 44 ON READER SERVICE CARD

NOW REPLACED
BY THIS

simplifies circuitry, gives 5times greater reliability, costs 2/3 less

Westinghouse now offers acomplete family of high-gain silicon power transistors which provide again of 1000 or more at 2 amps ...with guaranteed minimum gain of 400 at 10 amps (WX 118 X series) ... aguaranteed minimum gain of 100 at 10 amps (WX 118 U series). They have power dissipation of 150 watts, operate at temperatures to +150° C. These devices offer great advantages in increased reliability, space, weight, and cost savings. They are ideally suited for applications in high power, high efficiency regulators, amplifiers, and switching circuits. For full information call your
nearest Westinghouse representative, or write to Semiconductor Dept., Youngwood, Pa. You can be sure ... if it's

SC-1062

Westinghouse

For immediate "off-the-shelf" delivery, order from these Westinghouse Distributors:

EASTERN
ACE SEMICONDUCTOR. INC. Birmingham 5, Ala./FA 2-0588
CARMAEMREARDIELOECTRONICS, PIiNtCt.sburgh, Pa./EX 1-4000 Newton. Mass. /WO 9-7700
EASTERN SEMICONDUCTOR SALES, INC. Syracuse, N. Y./GR 8-0903
ELECTRONICS WHOLESALERS, INC. Melbourne. Florida/PA 3-1441
GENERAL RADIO SUPPLY CO.. INC. Camden, New Jersey/WO 4-8560
GENESEE RADIO PARTS CO. Buffalo, New York/TR 3-9661
KANN-ELLERT ELECTRONICS, INC. Baltimore, Maryland/TU 9-4242
MILGRAY ELECTRONICS New York, New York/YU 9-1600
RADIO & ELECTRONIC PARTS CORP. Cleveland, Ohio/UT 1-6060
SCHWEBER ELECTRONICS Long Island, New York/PI 6-6520
Silver Spring, Maryland/JO 5-7023
MIDWESTERN
EC ISEMICONDUCTORS, INC. Kansas City. Mo /WE 1-0829
ELECTRONIC COMPONENTS FOR INDUSTRY CO. St. Louis, Mo./WO 2-9916
HALL-MARK ELECTRONICS CORP. Dallas. Texas/TA 4-1648

INTER-STATE RADIO & SUPPLY CO.

LENERT CO.

Denver 4. Colo./TA 5-8257 Houston. Texas/CA 4-2663

MIDLAND SPECIALTY CO.

El Paso, Texas/TE 3-9555

Phoenix, Ariz./AL 8-8254 Albuquerque, N. M./CH 7-0236

RADIO DISTRIBUTING CO.

Indianapolis, Ind./ME 7-5571 SEMICONDUCTOR SPECIALISTS, INC.

UNITED RADIO. INC. Chicago. Illinois/NA 2-8860

Cincinnati, Ohio/MA 1-6530

WESTERN
ALMAC ELECTRONICS CORP. ELMAR ELECTRONICS Seattle. Wash./PA 3-7310
Oakland, Calif./TE 4-3311 HAMILTON ELECTRO SALES
Los Angeles, Calif./BR 2-9154 Palo Alto, Calif./DA 1-7541
NEWARK ELECTRONICS CO. Inglewood. Calif./OR 4-8440
DENNY-HAMILTON ELECTRONICS San Diego, Calif./AC 4-3451

CANADA CANADIAN WESTINGHOUSE CO., LTD.
Hamilton, Ontario/JA 8-8811

111l11111111 UP TO 47 ANALOG IMPUTS
HIGHSPEED MULTIPLEXER

NIXIE DISPLAY
ANALOG -TO DIGITAL
CONVERTER

LOGIC AND FORMAT CONTROL
(SOLID STATE)
46.

MAGNETIC TAPE (AMPEX FR 400)

HIGH-SPEED MULT IPLEXER

ANALOG RECORD

EDIT

LOGIC AND FORMAT CONTROL

MAGNETIC TAPE

Simplified diagram shows RADATAC in "Record" and "Edit" modes. Sampling rate of 3750 per second provides nominal 80 scans per second for 47 input channels.
HOW TO CUT THE COST OF PREPARING DATA
FOR COMPUTER ENTRY
Radatac bridges the language gap between transducers and computer

Whether you own a computer or rent computer time for analysis, checkout or process control, RADATAC can save you money. This compact, portable unit converts analog inputs to digital format, stores information, provides visual display for data editing prior to computer entry.
These features simplify the mechanics of transforming raw data into meaningful results. They let you edit out the less significant data, thus save computer time. They let you bring taped digitized data from plant or lab to the computer, whether the latter be at your home office or at
a service center. RADATAC, originally developed by Radiation Incorporated for
missile program applications, embodies system-proved components. Yet, RADATAC costs far less than an equivalent built-up system.
Investigate the savings you can make on digital data acquisition with RADATAC. Write Radiation Incorporated, Dept. EL-32, Melbourne,
Florida.

46

CIRCLE 46 ON READER SERVICE CARD

RADIATION
/ NCO IR /TD or-RATED
CIRCLE 47 ON READER SERVICE CARD-*

Circuit Fabricators get Proven, Consistent RELIABILITY

Resulting in: ·Extreme Flexibility ·Strongest Bond ·High Dimensional
Stability

If you're using flexible printed circuitry now or have tried in the past with little success, Schjeldahl's Schjel-Clad Copper Mylar lamination offers you the strongest bond and the purest finished product.
With Schjel-Clad Copper Mylar, all inherent characteristics of Mylar and copper are maintained. The "creep" factor is very low; circuits don't shift. The bond is uniform, eliminating air bubbles and "fish eyes" in the final product.
The bonding agent is Schjel-Clad, a special thermo-setting Schjeldahl adhesive which assures high purity and high bonding strength in the lamination. Low distortion of circuits etched on Schjel-Clad Copper Mylar is proof of its dimensional stability. It can be etched by the use of standard etching materials and also can be exposed to chlorinated cleaning solvents for short periods of time without damage.
AVAILABILITY Schjeldahl's Copper Mylar is available in various composites from 10 mil Mylar laminated to 5oz. copper to 1 /2 mil Mylar on 1oz. copper.
'du Pont trademark for its polyester film

This material is available with copper on both sides of
Mylar, or Mylar on both sides of copper. There are a number of circuit fabricators who are familiar with Schjel-Clad. A listing is available on request. The applications listed below show a number of uses or proposed uses of Schjel-Clad:

Computers Aircraft Television and
Radio Transformers

Business Machines Switchboards Automobiles Memory Systems

Printed Wiring Circuitry Shielding Harnessing and
Wiring

G. T. SCHJELDAHL CO., Northfield, Minnesota Attn.: Carl R. Bergquist, LAMINATING DIVISION

Please

_Rush more information on Schjel-Clad Send me a sample SIZE: THICKNESS: _ Call me immediately

PUTTING TOMORROW'S MATERIALS TO WORK TODAY

PRODUCTS SERVICES

G.T. Schjeldahl Co.

NORTHFIELD. MINNESOTA · PHONE

NIAGARA 5 5635

Mr. Company City

State

This is the "Capitol" building of the coil winding industry, the home of COWECO.

The added floor space and improved facilities mean faster and better service in meeting your requirements in this highly specialized field.
Into this new building has gone all the past experience and 'know-how' of the past 20 years, the kind of skill and background that has produced much of the equipment that's now standard throughout the industry.
What has been added is an even greater determination to produce better, more efficient equipment...to help you produce abetter end-product more efficiently.
All our experience, 'know-how', and facilities are available to help you work out your requirements in this specialized area. Send for our catalog, or write us about your requirements.

co Lmom MIME! TCOMPARY

,

.1.11,e,t

er\

-1#"1 '-r-i
sy
e

COIL WINDING EQUIPMENT CO.
OYSTER BAY, NEW YORK --WAInut 2-5660 (Area Code 516)

48

CIRCLE 48 ON READER SERVICE CARD

electronics

1AMNANGOINNATIVE
ENGIIINIEL ERING SPACE ERA

ENGINEERING CAPABILITIES IN:
· CRIMP & SOLDER TECHNIQUES MICROMINIATURIZATION · MATCHED IMPEDANCE PRINTED CIRCUIT PLUGS ·UMBILICALS PLUGS FOR EXTREME ENVIRONMENTS ·RACK/PANEL APPLICATIONS HERMETICS MAGNETIC DEVICES Whatever your requirements for these and other Space Age applications, write to:

SEE CANNON AT IRE BOOTH 2727-2731
CANNON ELECTRIC COMPANY, 3208 Humboldt St., Los Angeles 31, Calif.

CANNON PLUGS

March 9, 1962

CIRCLE 49 ON READER SERVICE CARD

49

Flip
These magnified halves when combined in this actual size Flip Flop AU contain 2transistors,2 diodes,4 resistors, and 2capacitors

New General Instrument Nanocircuits

Source for Silicon Nanocircuits. Now you can design

oxide microcapacitors. Ill Silicon Nanocircuits need

military and industrial computer circuits with high-

no encapsulation. Each component (preselected and

speed, silicon Nanocircuits whose substrates meas-

pretested for reliability prior to bonding to the

ure as little as 0.17 x0.17 inches. Latest example

substrate) is passivated by General Instrument's

of General Instrument's Nanocircuit Program. these

unique Molecular Shield process. Nanocircuits

new flip-flops utilize matched pairs of semiconduct-

are unaffected by external ambients. The coating

ers and operate at speeds in the nanosecond range.

serves only to provide mechanical rigidity. U Com-

The flip-flop schematic shown at right, typical of the

plete details on all silicon Nanocircuits are avail-

many configurations available, consists of two sili-

able at the General Instrument sales office nearest

GENERAL INSTRUMENT SEMICONDUCTOR DIVISION con planar epitaxial transistors, two silicon micro-
diodes, four silicon microresistors and two silicon

you. Call or write today. General Instrument Semi-. conductor Division, 65 Gouverneur St., Newark 4, N.J.

See us at IRE, Booth 1212

Three-dimensional solid-state display showing rotating electroluminescent panel and three target consoles for simulation display (Avco)

ENGINEERING HIGHLIGHTS

1962 IRE
CONVENTION

ON IVte

70 e,be,,,ti/:.l·

·P..t.

0 ,
re +0 u

··ive4111-

SPECIAL

Looking into the next half century with microwave computers, electro-optical circuits, biological power supplies, semiconductors, superconductors, thermoelectrics, atomic power and electrostatic recording
* -CIRCLE 50 ON READER SERVICE CARD

LATER THIS MONTH more than 250 papers will be presented to the 1962 International Convention of the Institute of Radio Engineers, which concurrently celebrates its fiftieth anniversary.
This article summarizes thirteen papers that indicate some new directions for the second half century
of this profession. There are three papers on modulation of light, an important corollary to the study of optical masers. Last paper in this group of thirteen deals with electrostatic recording. Don't miss it. The technique may change a lot of
our ideas about electronic recording. Other papers deal with microWave computers, thermoelectric mi-

crowave detectors, superconducting delay lines and a microwave deflection-amplifier tube, said to bridge the gap between conventional triodes and traveling-wave tubes.
Solid-State 3-D Display--A threedimensional display suitable for use with air-space surveillance radar can be achieved by rotating an electroluminescent panel at 20 rps under a clear plastic dome. The Avco panel has acrossed-grid matrix and displays aspot of light at the intersection of energized horizontal and vertical lines. A floating spot of light to indicate atarget is achieved by pulsing the inputs to a cross point. A height band would be

51

RADAR DATA

X AND Y (ANALOG)

ANALOG TO DIGITAL
CONVERTER

e (BINARY)

COMPUTER CHANNEL

X Y
8
(BINARY)

INPUT BUFFER

RESUME OPERATION

START

ELECTROLUMINESCENT PANEL TARGET
MOTOR

CHANNEL SELECTOR TRANSLATOR

X REGISTER

REGISTER

8
REGISTER

SLIP RING BRUSH BLOCK
AZIMUTH ENCODER
AZIMUTH
ENCODER AMPLIFIERS

START

CONTROL

ACCESS GATE ACCESS GATE

COMPARED TRIGGER

AZIMUTH COMPARATOR

11(DCIRESS NO.1

kI

ADDITIONAL

ADDRESSES (IN

PARALLEL)

AZIMUTH

FIG. 1--Rotating shaft of three-dimensional solid-state display drives azimuth encoder whose output feeds back to the control circuits

achieved by applying the signals continuously.
The system permits using color, displaying target tracks, alphanumeric characters and beacon-code signals. A demonstration unit is shown in the photograph and in Fig. 1. The panel is attached to a shaft that is connected to a slipring-and-brush assembly and an azimuth encoder that feeds back information to control circuits. Three control panels have switches that can change the position of three targets within the display volume.'
Microwave Computing Technique-- A computing technique capable of processing data at 1,000 Mc or faster uses two frequencies: 5,500 and 6,500 Mc to represent binary zero and one. Boolean algebra is performed by frequency conversions that produce asignal at either of the logic frequencies. The logic element is made up of mixers and filters. It has six inputs. Two, three or four inputs may be data variables. The remaining inputs are control signals. Both data and control signals use the same logic frequencies. A data signal in one operation may become a control signal in a subsequent operation.
The logic element will form any

one of the 16 Boolean functions of two variables; three and four-varible functions are formed with somewhat less versatility. Both logic and control signals are governed by the same clock signal. By programming the control signals, the function of the logic element can be changed with successive clock pulses: such as from an AND circuit to a NOR circuit.
The memory element of the system is an oscillator designed to run at either logic frequency depending on its set. Once set, the oscillator will not change frequency until reset to the other logic frequency by asubsequent logic signal.' Test circuits of the memory and parts of the logic element have been built at ITT Federal Laboratories.
Microwave Light Modulation--An electro-optical device developed by Sperry Gyroscope can modulate a light beam at frequencies from 500 to 2,000 Mc. It is primarily a c-w device but can be pulsed. It uses the Pockels electro-optical effect. An ammonium dihydrogen phosphate (ADP) crystal is placed in amicrowave cavity in the region of major electric field. See Fig. 2. The crystal axis is parallel to the field. A collimated beam of light is passed

through the crystal. A polarizer plate is inserted at the input to the cavity and an analyzer and quarterwave plate at the exit.
When the cavity is excited at its resonant frequency, the electric field set up in the crystal will cause its complex indices of refraction to vary at the resonant frequency. This produces an alternating rotation of the polarized beam of light. Sufficient voltage is applied across the crystal to cause up to 90-deg rotation of the light thus varying the light level from maximum to minimum. The quarter-wave plate in front of the analyzer optically biases the system to apoint midway between maximum transmission and extinction.
The electro-optical effect in ADP can be extended to 15 Ge. Thirtypercent modulation can be achieved in c-w operation; 100 percent with pulse operation. The limit on modulation percentage arises from heating of the crystal; this heating is a function of both frequency and applied r-f field. Work is being done to extend the c-w modulation percentage by cooling.'
Ultrasonic Light Modulator--Another electro-optical device makes use of the Debye-Sears effect. Here

52

light is passed through a liquid ultrasonic delay line. The liquid regions of condensation and refraction act as a diffraction grating. The spacings of the diffraction pattern depend upon the sound wavelength.
This effect, as studied at Columbia University Electronics Research Laboratories, concerns spatial modulation of nearly coherent light. The delay line is a tank of distilled water. Studies relate delay-line input voltage to relative diffracted light intensity. Research workers are trying to obtain a large fractional bandwidth with both low insertion loss and linear phase characteristics.
Work has concentrated on the transducer: an X-cut quartz plate and improvements that may be made by using a quarter-wave matching section instead of backing material. Results using a quarter-wave section 30 microns thick adhered to a20-Mc transducer are given.'
Electro-Optical Spectrum Analyzer --Columbia is also working on spectrum analyzers using the same electro-optical effect. The object is to get aweighted instantaneous power spectrum of an electrical input signal. A frequency coverage of 100 Mc with 10-Kc resolution can be obtained.
After the partially coherent light is spatially modulated, alens is used to spatially integrate the light distribution. Thus the Fourier transform of the signal is obtained in the focal plane of the lens. A photoconductor mosaic produces an electrical output that is proportional to the power spectrum of the input signal.
Since a source of collimated monochromatic light is needed to get large dynamic range without
degrading the frequency resolution, a ruby laser has been considered as light source.'

delivered to the damper was found to be

P = .72

(col) k

DI

m

where cr2 is mean square linear rela-

tive velocity; m is mass of the mov-

ing body; co, is the cutoff frequency

of the frequency spectrum assumed

for the subject animal; eis the ve-

locity damping constant; and k is

the spring constant. To give an idea

of order of magnitude: if

is 1

ft per sec, m is 100 grams and co,

is 6.28 radians per second then

maximum power is 58 milliwatts.

A Rochelle-salt phonograph crys-

tal was used experimentally as a

mechanical-to-electric energy con-

verter and was excited by relative

mechanical motion. The electrical

Superconducting coaxial transmission line (Sperry Gyroscope)
power supply consisted of an impedance-matching transformer, fullwave rectifier, and output capacitor. The supply was capable of deliver-

FIBER OPTICS BUNDLE (BEAM SPLITTER)
GAS OR SOLID--STATE LASER CONTINUOUS WAVE
(PRODUCES PLANE POLARIZED LIGHT)

TRANSMITTER
i/4 WAVE PLATE

TRANSMITTER PRIMARY MIRROR
ANALYZER

LASER POWER SUPPLY
At iTyPICALLY
10 MC

FIBER OPTICS COMBINER BUNDLE

fm4 fm3

MULTICHANNEL
ELECTRO --OPTICAL LIGHT MODULATORS

POWER OSCILLATORS

SIGNAL MODULATORS FOR POWER OSCILLATORS

ANALYZER PLATES fo.30MC

SIGNAL INPUTS
RECEIVER
MULTiCHANNEL ELECTRO --OPTICAL LIGHT DEMODULATORS
FIBER OPTICS RECEIVER BEAM
SPLITTER

Biological-Energy Power Supply--
Muscular activity and motion of animals may provide power for short-range telemetering equipment for physiological studies. A mathematical model of such a system using mechanical analogs was developed at the University of Wyoming.
The system consisted of a mass, spring and velocity damper. Power

RECOLLIMATOR LENS

muLTIPLIER--PHOTOTUBE DETECTOR AMPLIFIERS

RECEIVER PRIMARY MIRROR

FIG. 2--Transmitter and receiver of a multichannel, broad-band electro. optical communications system

March 9, 1962

53

ing fifteen microwatts. An oscillator using a unitunnel
diode operated successfully from the supply. The oscillator required approximately 0.7 microwatt of d-c power at 120 millivolts. It delivered 0.2 microwatt. Figure 3shows the mechancial and electrical system. Results show that the total motion of an animal and the relative motion between rib cage and diaphragm can be used as a source of power. Surgical implantation has not yet been attempted.'
Improved Unijnnction Transistor--
A small unijunction transistor of improved characteristics may result from a new design approach being tried by General Electric. They use the modulation of the spreading resistance of a small-area ohmic contact by injection of minority carriers from a nearby emitter junction. Previously silicon unijunctions have been filamentary in nature with two large-area base contacts. They have used conductivity modulation of a fraction of the total volume of the filament with asmall-area emitter near the center of the filament.
The new device geometry permits reducing the distance from emitter to base 1for agiven stand-off ratio therefore reducing turn on time by a factor of 100 or more. The geometry also reduces emitter saturation voltage, valley and peak-point current. Lower saturation voltage and valley-point current permit bi-
stable circuit applications impossible with conventional unijunctions. Lower peak-point current combined with low emitter leakage current makes possible long time delay circuits using small timing capacitors. The units have been made success-
fully using pulse alloy techniques.'

superconducting properties of metals and improved dielectric properties at low temperatures. It requires acryostat capable of lowering temperature to 4.2 deg K. At X-band, acable 0.036 in. in inside diameter has aloss of 1.5 db per microsecond; at S-band, loss would be only 0.16 db per microsecond. They have made 0.5-microsec delay lines 0.036 in. in outside diameter.
The dielectric is Teflon. Center conductor is 0.01 in. niobium; outer conductor is lead-tin solder. They expect the lines to be able to handle kilowatts of power. Figure 4shows loss-temperature characteristics of a typical cryogenic delay line.'
Thermoelectric Power Detectors-- The heating effect of r-f currents makes thin-film thermoelectric devices useful as microwave power detecting devices. Experiments with coaxially mounted bismuth-antimony devices showed that thermoelectric power is constant at about 100 microvolts per deg C for equivalent film thicknesses ranging from 10 ohms per square to 300 ohms per square. Effects of atmospheric pressure and shape of the thermoelectric device have been studied at PRD Electronics.
When thermoelectric devices must be cascaded to obtain in-

R1EZOATM_

TRANSFORMER

RECT

OSC

L _

MOTION DETECTOR

Superconducting Delay Line--A low-loss superconducting coaxial
line developed by Sperry Gyroscope can produce delays from 1 to 20 microseconds at microwave frequen-
cies where lumped-constant delay lines are unsatisfactory because of attenuation. It is possible to use an
ultrasonic delay line but it needs alarge transducer, introduces about 70-db loss, is bandwidth limited and cannot provide delays down to 1to
10 microseconds without undue at-
tenuation. The cryogenic delay «tine uses the

SPRING

MASS

SPRING

FIG. 3--Mechanical and electrical configuration of biological motion power supply

creased voltage output or for other reasons such as matching, drift is automatically eliminated when an even number of the elements is properly arrayed to form a con-
tinuous pile.'
inert lakes Steerable Antenna--A multiple-beam receiving antenna system for frequencies between 12 and 18 Mc has been built by Army Signal Corps and used on transmissions between Washington. D. C. and Germany. The system showed that it is feasible to separate out the various propagation modes under multipath conditions
so that these modes appear at different antenna outputs.
The antenna elements are vertical center-fed dipoles r-f insulated from buried transmission lines by self-resonant cable chokes. There are 24 antenna elements arrayed along in a straight line 6,312 feet long. Spacing between elements varies from 357 feet between foremost elements to 491 feet between rearmost elements. Transmission lines are aluminum-sheathed foam-insulated coaxial cable.
Signal-processing equipment consists of 24 wide-band gain-adjustable amplifiers each driving a coaxial delay line terminated in a matching resistor. Each delay line has 14 taps and each tap couples loosely through an adjustable series capacitor to ahigh-input-impedance wide-band transistor amplifier. There is a total of 336 tap amplifiers. The outputs of each set of 24 tap amplifiers are fed in parallel to one of 14 combiners and thence to any number of conventional receivers.
Each set of taps corresponds to a different angle of the normal to the wavefront against the array axis. The angles range from zero to 29.6 deg. One of the conventional receivers feeds a cathode-ray display tube with a staircase horizontal sweep. The receiver is con-
nected sequentially to each of the 14 combiners so that all inputs are constantly visible:*
Microwave Deflection -Amplifier Tube--The frequency spectrum between 100 and 1,200 Mc is troublesome for the designer. Conventional triode tubes suffer from transit-time effects and travelingwave tubes for this frequency

$4

electronics

HELIX (INNER ELECTRODE)

ELECTRON BEAM

INNER SHIELD

OUTER ELECTRODE
OUTER SHIELD

COAX

LOSS IN DECIBELS PER MICROSECOND

3

4

5

6

7

8

9

TEMPERATURE IN DEG I(

STRIP -LINE COLLECTOR

CATHODE

GRID 3

GRID I

BEAM -FORMING ELECTRODE

GRID 2
FIG. 5--Electrostatically focused (E-type) deflectionamplifier tube

FIG. 4--Loss in decibels per microsecond versus temperature in deg K for cryogenic delay line; radius of niobium inner conductor, 0.031 in.; inner radius of lead outer conductor, 0.14 in.; dielectric, Teflon

range are often large and heavy.
The RCA tube illustrated in Fig. 5 is a hybrid tube: it is a deflectionamplifier tube with a slow-wave circuit or helix, borrowed from traveling-wave tube design. It provides a synchronous input-deflection circuit and awide-band output.
The tube has two modes of operation. Output can be taken from the helix as in traveling-wave tubes or from a high-impedance stripline collector or target. The tube has an E-type structure that maximizes beam current while it enhances deflection sensitivity and transconductance."
Atomic Weather Station--A digital data telemetry system powered by an isotopic generator fueled with one pound of strontium-90 is now operating as an unattended weather station in the Canadian Arctic 700

miles from the North Pole. It transmits eight times daily to a manned weather station 250 miles to the south.
The nuclear power supply delivers a nominal 5 watts. Data is sent with an eight-bit word for each weather parameter over two transmitters sending simultaneously on 3.4 and 5.0 Mc.'
Electrostatic Recording--Permanent electrostatic recording with nondestructive readout is possible with a system developed jointly by Dupont and Armour Research Foundation. It depends upon injection of equal and opposite charges into fluorcarbon, polyester or polyethylene films. The films are drawn over a knife edge with a resilient conducting backing electrode. In a d-c bias system bias imposed on two knife-edge electrodes in se-

quence produces zero remanant charge until a signal is applied to the second electrode; a-c bias can also be used.
A thin metallic readout electrode
is sandwiched between two electrostatic shields. Readout is by elec-
trostatic induction. Output signals
of one volt are obtained by driving the shields in a cathode-follower
circuit. The plastic tape is treated with an ion bath after each record-
ing and playback. This neutralization improves recorded signal life, reduces noise from random electric charges and minimizes layer-tolayer print-through during storage. The ions neutralize uncompensated surface charge.
Signal-to-noise ratios up to 40 db have been obtained. Information can be recorded with wavelengths down to one mil; signal life may be greater than 100 years."

REFERENCES
(1) J. L. Coddington and R. J. Schipper, Practical Solid-State Three-Dimensional Display.
(2) R. T. Adams and B. Mindes, A Novel Microwave Computing Technique.
(3) W. M. Macek, R. Kroeger and J. R. Schneider, Microwave Modulation of Light.
(4) M. Arm, L. B. Lambert and B. Silverberg, Electro -Optical Transfer Characteristics of Liquid Delay-Line Light Modulators.
(5) L. B. Lambert, Wide Band, Instan-
March 9, 1962

taneous Spectrum Analyzers Employing Delay-Line Light Modulators.
(6) F. M. Long, A Summary of Biological Energy as a Power Source for a Physiological Telemetering System.
(7) V. A. 13lubm and T. P. Sylvan, A New Unijunction Transistor Structure Using Spreading Resistance Modulation.
(8) P. Schizume, Superconducting Coaxial Delay Line.
(9) S. Hopfer, N. H. Floclerman and L. Nadler, The Properties of Thermoelectric Elements as Microwave Power Detectors.
(10) H. Brueckmann, J. It. Gruber and

C. A. Bramble, ISCAN--Inertialess Steerable Communication Antenna.
(11) H. J. Wolkstein and R. J. McMurrough, A Wideband Microwave DeflectionAmplifier Tube.
(12) A. M. Sullivan, Jr., A Digital Data Telemetry System for an Atomic-Powered Automatic Weather Station.
(13) D. E. Richardson, J. J. Brophy, H. Seiwatz, J. E. Dickens and R. J. Kerr, A System of Electrostatic Recording.
All papers to he delivered at 1962 International IRE Convention, New York, March 26-29.

55

Using Instability Characteristics

Oscillistor and other new components are being developed from results of study of plasma behavior in solid-state materials

SOME SOLID MATERIALS contain
charges of both signs and behave in
much the same way as ionized gas. These collections of charges can
also be called plasmas. It is generally accepted that a
plasma is a collection of positively and negatively charged particles, present in about equal densities so
that the overall collection is approximately neutral. However, this
is not enough to distinguish the properties of the plasma from those
of acollection of charges of one sign alone. At low density, the two would have similar responses to electric and magnetic fields. The distin-
guishing feature of plasma is its great resistance to internal electric fields, that is, its strong tendency
to space-charge neutrality. The potential due to space charge at a point inside the plasma decreases exponentially with the distance from the charge. The mean distance over which the fall-off occurs is given by X., = es,, kT/2ne'P = 49
T/n m, where XD, the Debye
length, is the distance at which the potential gradient due to the inside charge is reduced to 1/e of its value by the surrounding op-
posite charges. At this distance the center charge is effectively shielded. The sphere that surrounds the charge with this radius is the Debye
sphere. The Debye length is proportional
to the square root of plasma temperature T and inversely propor-
tional to square root of the electron density n. The formula is written in the mks system: e is the electronic charge and se, the dielectric permittivity of the medium in which the plasma is situated. The numerical expression is useful in evaluating the Debye length and
typical values are given below. For the plasma to have space charge
neutrality in the interior, its dimensions must be large compared to the Debye length. The second half

of the definition of a plasma thus
requires that the collection of
charges must occupy a volume of space that contains many Debye spheres.
A number of examples other than ionized gases satisfy these conditions. Negatively charged electrons and the corresponding positively charged ions in a solid make up a neutral collection, and provided the solid container is large enough, they
will have plasma properties. The extrinsic n-type semiconductor is an example of such a plasma. Of course, the ions are tightly bound in the lattice or in some other sites in the crystal, and they behave like particles of approximately infinite

mass. The case of holes and negative ions is identical to the first example, and a p-type semiconductor
is agood example. Plasmas of these two kinds will be called immobile,
since they cannot be moved or changed in shape without moving
or deforming the containing solid. In addition to the two cases
where one of the charged particles is light and the other heavy, asemi-
conductor or semimetal may also contain a plasma made up of electrons and holes. An intrinsic semi-
conductor is an example of this kind of plasma. An electron-hole plasma consists of particles, which are all light like the electron. This plasma may be compressed or expanded

It

( B

OSCILLISTOR.,,,

R

OUT.

(A)

TO D-C SUPPLY FOR MAGNET
(C)

FIG. I--Electron-hole plasma in a self-pinched condition, (A); pulses depicting the current and voltage in asemiconductor in which the electronhole plasma is undergoing aself magnetic field pinch, (B); schematic of oscillistor circuit, (C)

56

electronics

of Semiconductor Plasmas

By MAURICE GLICKSMAN
RCA Laboratories, Princeton, New Jersey

much more easily than where one

of the components is bound into the

solid lattice, and it will be called a

mobile semiconductor plasma.

Before these examples can be

called plasmas, they must satisfy

the condition that their volume con-

tains many Debye spheres. Intrinsic

germanium at 300 K has a density

of electrons and holes of about 2 x

10"/m" and a corresponding Debye

length of 10 m, a short distance. At 77 K fairly pure indium anti-

monide or extrinsic germanium with electron densities of about

1050/m" have even smaller Debye lengths, 2 x 10' m. Even the low density plasma in extrinsic ger-

manium at liquid helium temperature, with its density of electrons and ions of 10"/m" has a Debye length of 5 x 10' m. For the first

Germanium oscillistor without its magnet. Magnet provides the field necessary to start oscillation

two examples the charge carriers will satisfy the definition for specimens as small as ten microns. In the last case the germanium will not contain a plasma if specimens are smaller than about 1 mm in size.
It is easy to make a semiconduc-
tor that contains a plasma, either
of electrons and ions or of electrons and holes. There are five different
ways to generate a plasma in the semiconductor: heating, d-c discharge, r-f discharge, injection and
irradiation. Four of these may be used to generate both mobile and
immobile semiconductor plasmas. First, the plasma may exist in
thermal equilibrium. The examples discussed earlier of extrinsic and
intrinsic semiconductors fall into this category. There is no need to add energy to the semiconductor to maintain the plasma. It is thus possible to produce this plasma easily in the laboratory, in contrast to the gaseous case. The difference is of course due to the much smaller ionization energy in the semicon-
ductor. In the extrinsic semiconductor the energy necessary to ion-

ize the semiconductor impurities is less than the thermal energy, kT. Usually this is less than one-hun-
dredth of an electron volt, while for gases the energy necessary is at least of the order of four electron
volts. Both mobile and immobile semiconductor plasmas may be produced in thermal equilibrium.
The second example, the d-c discharge, is familiar in gaseous plasmas, and is widely used in gas
tubes and lamps. The semiconductor phenomenon is called avalanche ion-
ization or breakdown. Particles present in the semiconductor are accelerated in a high electric field to energies large enough so that they
may ionize either impurities in the semiconductor (impurity break-
down), producing an immobile plasma, or the host atoms of the crystal, producing a mobile plasma
of electrons and holes. This process may be made to occur in the bulk of a semiconductor crystal, or in the high field region of a junction. Because of the large fields re-

quired for most semiconductors, the mobile plasma is normally produced in ajunction, where the fields
of more than 10' volts per meter may be achieved without appreciable difficulties with breakdown in the surrounding atmosphere or on
the surface. However, in the semiconductors indium antimonide and indium arsenide the field necessary
for production of an electron-hole plasma is much lower--only of the
order of 2 x 10' to 10' volts per
meter--and such plasmas have been produced in bulk material.
The third example, r-f discharge,
is much like the d-c discharge, in that an r-f field is used to add energy to some carriers initially present, which then have enough energy to produce a plasma on impact with impurities or the host lattice. Such a technique has been used to make an immobile semicon-
ductor plasma in studies at very low temperatures: it has the advantage of not requiring physical contact to the material. There is no reason,

March 9, 1962 57

tromagnetic wave may be described by the plasma frequency, that is, the frequency at which the electrons can describe longitudinal oscilla-
tions in the plasma

1 [ ne2
fp = 2r in* ee.

= 8.98

n e(m*

1/2

1/2

,,)

cps

FIG. 2--Typical output waveform of oseillistor1

in principle, why it could not also be used to make a mobile semicon-
ductor plasma. In injection the plasma is made
up by adding to the volume the two
components, which would be electrons and holes in the semiconductor mobile plasma. These may be injected from contacts to the semiconductor, and a transistor is a good example of a semiconductor containing a plasma of this kind.
This technique cannot be used to produce the immobile kind of plasma, since the ions cannot be injected in the usual sense.
The last technique used in the generation of a plasma involves di-
rect irradiation, the addition of energy in another form to the semiconductor to ionize either impuri-
ties or the host atoms, and thus produce either the immobile or mobile plasma. Electromagnetic radiation, consisting of photons of energy above the required ionization energy, will produce a pair of
plasma particles per photon absorbed when the energy is just above the threshold. Charged particles will ionize the atoms by impact as they traverse the semicon-

ductor, producing many plasma pairs per particle if the material is
thick enough. Plasmas have been made by all
five techniques, and their properties have been investigated. In r-f discharge and irradiation, however, it has not been the plasma whose
properties were studied, but rather the behavior of the individual car-
riers in the plasma. The ability to produce a plasma
in anonequilibrium situation allows some useful devices, such as the
avalanche diode and the impact ionization diode, which may be used
as switches. The production of the plasma brings with it an increased conductivity, due to the much increased density of the carriers and
not to their plasma character. In general the electrons and holes
in the semiconductor plasma have a short mean free path; their collision frequency is thus high (perhaps 1,000 Ge at room temperature,
going down to a few Ge at 1 K). Forces that act on the individual
electrons thus are quickly distributed to the surroundings through
collisions. The effect of aplasma on an elec-

ne Imo is the ratio of the mass of
the plasma particle to that of the free electron. In general, the carriers in semiconductors behave as if they have masses different from that of the free electron, and most of the known values of m*/m., are
less than one. For intrinsic germanium at room temperature, the electron plasma frequency is about
K-band (27 Ge) ;for indium anti-
monide with 10' plasma particles
per cubic meter, it is about 225 Ge. These plasmas then have their reso-
nant frequency in the millimeter range, and provide a simple way of getting a plasma with such a high
plasma frequency. The plasma frequency is also a
dividing point in the response of a plasma to an electromagnetic wave. At frequencies below the plasma frequency, an incident wave is re-
flected, while at frequencies above the plasma frequency, the wave is transmitted with some attenuation
and phase shift. This simple picture, which works well in describing the gaseous plasma, is more com-
plex in the semiconductor plasma examples because of the normally small size of the semiconductor plasma. At the lower frequencies, then, the semiconductor plasma may be much smaller than the penetration depth of the wave and there
can be some penetration and transmission of the signal.
When a sufficiently strong current is passed through the mobile semiconductor plasma, the plasma will reduce in size because of the pinching force of its self-magnetic
field. This is illustrated in Fig. 1A. At low currents, the electron-hole plasma will occupy the complete volume of the semiconductor, as shown by the dashed lines which
illustrate the outer surface of a cylinder. There will be a small azimuthal magnetic field due to the current passing through the material. When the current is large
enough so that the force it exerts

58

electronics

on the current-carrying elements (through its own magnetic field) can exceed the kinetic pressure of the plasma, the current will be
forced in towards the center, and the cylindrical column of plasma will contract inside the semiconductor. This effect has been observed in a plasma produced by a pulsed discharge in indium antimonide at 77 K. Plasmas with densities in the range 10» to 10"/m" have been pinched to a radius calculated to be as small as about 20 percent of its original value.
An example of the type of obser-
vation appears in Fig. 1B. The current pulse is displayed above the
voltage pulse: the current is derived from a resistor in series with the semiconductor, while the voltage is that across two probes attached along the length of the semicon-
ductor. At low currents, both pulses are identical, and the same as the
one shown in the upper sweep. The voltage pulse shown is observed for an intermediate current, well above the threshold for pinching. The circuit is arranged for constant current and the first fall-off of the voltage pulse, right after the initiation, marks the production of the discharge and the plasma. During
the relatively flat part of the pulse which follows, the plasma begins
its contraction, which is culminated about half-way through the pulse. The oscillations on top of the pulse are somewhat accentuated here; the latter part of the pulse is flat. Thus the plasma pinches in about 0.15 µsec, and stays pinched in crosssection for times as long as at least 1.5 I.Lsec. The functional behavior of the measurable quantities, such as the threshold for pinching, the dependence of the pinch-time on current and the increased resistance in the pinch, are in good agreement with what is calculated for apinching plasma. The oscillations on top of the voltage pulse that occur after the pinch is completed are ascribed to hydromagnetic waves induced in the pinching process. The measured frequencies and decay times are in agreement with those calculated.
Another class of instabilities'. La in plasmas was recently discovered. The oscillations were seen independently in both gaseous and semiconductor plasmas, although the work-
ers were unaware of each other's observations for several years. They

have been explained theoretically only during the past year. The semiconductor plasma instability was labeled the oscillistor by Larrabee and Steele,' who investigated it in some detail. A plasma must be present in the semiconductor: in the first observations, this plasma was produced by synthesis, that is, injection from contacts. A current and a magnetic field parallel to the current are applied to the plasma. (This device is shown in Fig. IC.) When this occurs, and the values of both the current and the magnetic field are large enough, the plasma exhibits spontaneous oscillations in the current amplitude. These oscillations may be large (70 percent of the d-c current) and persist for long periods. Figure 2is an oscillogram of a 1-Mc oscillator output. Experiments have shown oscillations in the semiconductors germanium, silicon, indium antimonide, and experiments also have shown that they are not due to anegative resistance of the current and voltage, nor to parasitic oscillating tank circuits associated with the crystal contacts or leads. Frequencies observed normally were in the range 1 Kc to 50 Mc.
Figure 3 shows an idealized geometry with the current and magnetic field. The cylindrical geometry is chosen for ease of discussion.
FIG. 3--Geometry for atheoretical model of the oscillistor

Normally, the plasma will be distributed throughout the semiconductor, with amaximum in density at the center and aminimum at the surfaces, where the plasma electrons and holes recombine. However, in the presence of the longitudinal magnetic field, ahelical perturbation of the current can be shown to be unstable. The magnetic field acts on the azimuthal perturbed current to increase its radial motion, driving it out to the walls. A theory has been developed for the semiconductor plasma that shows this instability, and predicts the currents and magnetic fields that allow the oscillations to grow. The theory shows that at a given electric field or current, the plasma will be stable until the magnetic field exceeds a calculated threshold value. Above this point, the plasma should become spontaneously unstable. The behavior predicted is in accord with the observations, as to the form of the behavior on the fields, the rough magnitudes of thresholds and frequencies observed, and the dependence of the various parameters on the dimensions of the plasma. The simplicity of the device can be seen in the photograph, which shows a germanium oscillistor without the magnet. Magnetic fields of the order of 3,000 gauss or more are needed to set the current into oscillation.
The instabilities are in the relatively low-frequency range: Kc and Mc. A class of instabilities predicted by Pines and Schrieffer' to occur in a plasma with just a current passing through it should be present in the hundreds of gigacycles. These are two-stream instabilities, familiar to engineers working with electron beam devices, but as yet unobserved in the semiconductor plasma. If found, these could provide a potent new device for producing millimeter waves.
REFERENCES (1) I. L. Ivanov and S. W. Hyvkin,
"Occurrence of Current Oscillations in Specimens of Germanium Placed in an Electric Field and a Longitudinal Magnetic Field, J Tech Phys (USSR) 28, P. 774, 1958.
(2) R. D. Larrabee and M. C. Steele, The Oscillistor--A New Type of Semiconductor Oscillator, J Appl Phys, 31, p. 1519, 1960.
(3) M. Glicksman, Instabilities of a Cylindrical Electron Hole Plasma in a Magnetic Field, Phys Rev 124, 1961.
(4) D. Pines and J. R. Schrieffer, Collective Behavior in Solid-State Plasmas. Phys Rev 124, 1961.

March 9, 1962

59

Measuring Capacitance of Varactor

Oscilloscope measures variations in varactor diode capacitance as sawtooth bias voltage sweeps this capacitance over its dynamic operating range. Second oscilloscope trace also presents varactor conduction characteristics as a function of swept input voltage

RF CHOKE

VARACTOR DIODE

INPUT PROBING
VOLTAGE (à) g

INPUT

SAWTOOTH___

.

BIAS

VOLTAGE

RF CHOKE
·--ewv-N-- TO OSCILLOSCOPE VARACTOR CURRENT DISPLAY

`4'

X

T IC LI

TO

OSCILLOSCOPE

3

VARACTOR

CAPACITANCE

DISPLAY

FIG. I--Varactor diode capacitance changes with increasing sawtooth bias derived from oscilloscope timebase

HERE IS A TEST setup that measures

the variation of varactor diode ca-

pacitance as its bias voltage is

changed. The same circuit also en-

ables the diode leakage current to

be measured for the range of bias

voltage. Further diode parameters

that can be determined with the

equipment are barrier breakdown

voltage and the exponent of varac-

tor capacitance-voltage character-

istic.

The measuring technique applies

a sawtooth voltage to the varactor

diode to provide asmoothly varying

bias, and uses a 30-Mc oscillator

signal for measuring the actual di-

ode capacitance over the range of

sawtooth bias voltage. Barrier

breakdown voltage is easily deter-

mined from the characteristic

curves that the equipment displays

on an oscillograph screen--voltage

breakdown is indicated by a sharp

increase in varactor a-c capacitance

at the breakdown point. The oscil-

loscope display used with this sys-

tem can be calibrated to permit

direct reading of both the a-c ca-

pacitance and reverse current at

any bias point, while mathematical

manipulation gives the exponent

of the varactor capacitance-versus-

voltage characteristic.

If desired, a more elaborate cali-

bration of the display or addition

of a logarithmic amplifier could

give a direct reading of the expon-

ent of the varactor C versus V

characteristic at any bias point. An

instrument using this type of meas-

urement would be suitable for rapid

test of sonnel.

varactors

by

pro_duction

per-

REVERSE o FORWARD -0J-sr-
REVERSE o FORWARD -.0--1-..-

(A)

150 100
50
o
--50 --100
--150

--t --IrEVERSE BIAS VOLTAGE AT 5 VOLTS/DIV

(B)

150 100 50
o
--50 --100 --150

-- oH Re>EVERSE BIAS VOLTAGE AT 5 VOLTS /DIV

FIG. 2--The U-shaped curves show variation of varactor ca pacitance with sawtooth bias voltage; zig-zag curves repre-

60

electronics

Diodes Dynamically

By W. JASINSKI
Special Products Operation, Phiico Corporation, Lansdale, Pa.

The circuit shown in Fig. 1 applies to the varactor diode a
low-frequency sawtooth bias voltage derived from an oscilloscope. The varactor is in series with a parallel R-C combination and alow-
inductance coil with their values chosen so that the total impedance presented to the saw-tooth voltage is R,.
The voltage at point B is directly proportional to the reverse current of the varactor and can be displayed on the oscilloscope as afunction of bias. The vertical deflection can be calibrated in varactor cur-
rent by short-circuiting the varactor and setting a reference position on the oscilloscope for aknown current level. The 30-Mc probing voltage from a low-impedance generator appears across the varactor and the coupling coil X. Since C is chosen to present a negligibly low impedance at the 30 Mc probing frequency, and the impedance of the coupling coil is low compared with the varactor impedance over the bias range, most of this probing voltage is developed across the varactor. The probing voltage is isolated from the saw-tooth generator and the current monitor line by self-resonant 30-Mc chokes. The coupling of the coil X to the 30-Mc resonant circuit is such that the impedance of the coil is not changed. Thus, for analysis, it is assumed that the coupling coil X is so adjusted that a pure resistance R. appears across its terminals at the probing frequency. This assumption of pure resistance is not necessary for operation of the sys-

tem, but it simplifies the analysis. The combination of diode D and
capacitance C. following the 30-Mc resonant circuit forms a peak detector circuit whose time constant is low enough to permit the detected voltage to follow the variations of the varactor capacitance at the sawtooth frequency. Therefore, at any point of the swept bias, this equation can be written for VI', the voltage across the 30-Mc resonant circuit
v.,= aR, A sin cut =
R, -- jwe1(V)

R,2

-co2

1 C (V)

2

A sin cot

and when R,

V.' = aR, C (V) co .4 COS cut

where A is the amplitude of the probing voltage applied to the varactor, w is the probing voltage angular frequency and a is the voltage amplification coefficient due to the resonant coupling.
Thus, after peak detection, the oscilloscope input is
= C (V) where I? is constant.
Therefore, the oscilloscope display may be calibrated directly in varactor capacitance. This may be done by recording the beam deflection for known capacitance values. The circuit values and the probing voltage frequency chosen permit measurement of varactor diodes

having a range of 0.1-20 pf. Experimental results are given in
Fig. 2--oscilloscope displays for varactors. Figure 2A shows a barrier breakdown at about 20 y bias plus a capacitance of about 2.5 pf at 0 v. This GaAs varactor exhibits no leakage current up to the barrier breakdown voltage, while exhibiting a capacitance variation of about 2.5 to 1 between 0 y and
the breakdown voltage. The zero bias voltage point corresponds to the sharp current increase at left
of the figure. Figure 2B shows an oscilloscope
display for a GaAs varactor fabricated with the same bulk material but exhibiting a rounded breakdown characteristic due to poor surface properties. However, the capacitance variation with voltage is independent of the leakage cur-
rent and provides an indication of the barrier breakdown voltage.
Figure 2C is an oscilloscope display of a Ge varactor for which a definite breakdown voltage is observed in both the capacitance and the reverse-current characteristic. However, a small leakage current flows before the breakdown point. The unit has excellent capacitance versus voltage variation; at zero bias the capacitance is about 9 pf while at breakdown it is about 1pf.
Figure 2D shows an oscilloscope display for a Si varactor. Although significant leakage current begins to flow at about --15 volts, the capacitance variation is practically unaffected. A barrier breakdown voltage of about 38 volts is indicated by the capacitance curve.

REVERSE 0 FORWARD DIODE CAPACITANCE

(c)

4-

6

4

2
o

± o -RleE·VERSE BIAS VOLTAGE AT 20 VOLTSiDIV

(D)

150 100
50 o
-50 -100 -150

10 8 6 4 2
o
l. o REVERSE BIAS VOLTAGE
AT 5 VOLTS/DIV

sent varactor diode current. A maximum capacitance ratio of about 9:1 is obtained

March 9, 1962

61

FIG. 1--Transistor Q. is switched at a

110V

constant rate but

with the on time

controlled by the

current and voltage

requirements of the

load

!DRIVER

SAuTOOTH OGC

SCHidiTT TRIGGER

I SWITCHING PULSE GEN

SERIES SWITCH
o,

r. RÉGI;Le 0%0 TaAKSISIOR

02

De

°3

REGULATED OUTPUT VOLTAGE

cir

_ COMMONT

PREREGULATOR

DUTY CYCLE CONTROL VOLTAGE

REFERENCE VOLTAGE

Power Supply Uses Switching Preregulation

Dissipation in the series regulating transistor is kept low by controlling the on time of aseries switching transistor. A small series inductor improves transient response and saves weight

By J. S. RIORDON, National Research Council. Ottawa. Canada

ONE OF THE LIMITATIONS of a variable voltage regulated power sup-
ply is the power dissipation in the series regulating element. When
the supply must furnish maximum
load current at minimum output voltage, this dissipation reaches its highest level. Consider a supply rated at 2 to 30 y d-c, 0 to 2 amps; typically, the unregulated voltage at the input to the series regulating element will be about 35 y d-c. When 2 amperes are drawn at 2 volts output, the worst case, the power dissipated is (35 -- 2) x

2 = 66 watts. Where primary
power comes from a utility supply, the low efficiency may be acceptable, but the heat generated will be
a problem. One solution is to use a variable
autotransformer bewteen the utility supply and the power transformer. The rectified voltage can then be adjusted until it is only a few volts larger than the regulated output voltage. Adjustment by hand is tedious when frequent variation is required, and is not necessarily
fool-proof. Adjustment through a

mechanical linkage tying output control and autotransformer to-
gether is satisfactory only if line voltage variation is low.
A regulator in which dissipation is minimized is the switching regulator, in which an unregulated voltage is chopped by a series switch and fed into an averaging circuit. Constant output voltage is main-
tained by controlling the switching duty cycle. While efficient, such a
regulator has poor transient response. A combination of relatively efficient control with fast response is obtained by aswitching preregu-
lator that will maintain a constant voltage drop across the series element of a conventional regulator. Several variations, including use of a magnetic preregulator, have been
discussed in the literature. Figure 1 is a simplified diagram
of a preregulated voltage supply. Voltage from T, is rectified by D, and D,, and fed into C,. Transistor Q. is a switch, which is opened and closed at a frequency f. Diode D,,

62

electronics

110V CHASSIS

SERIES 08 (ON HEAT SINK)

2A

BY403 SWITCH 2NI073A

LI 2x19IC 11.8 MH

TI 50274

4-3..1k)7

62-N1I1043-91 IN270 + 45 · (25-

ILBY403

114270

T3 · )167K60 ,
9.1

012 214174

8.0

(ON HEAT SINK) 1.4 550MA

SERIES REGULAT NG

R 2 0.17 3A

TRANSISTOR

-

-

SHORT CIRCUIT CURRENT SELECTOR

IN316

OUTPUT VOLTS

09 2NI307

Ou 2NI307

2NI039

013 5K
2141307 2NI307

-L
2-30 VOC 0-2A
7-

20N6102 IC?"

C.)

LEVEL ADJUSTMENT

+I5V BIAS
SWITCHING PULSES DUTY CYCLE CONTROL VOLTAGE

LfREREGULATOR _j
742071

REGULATOR

270

330

2NI306

390pF

167K60

IW(V5D50C00)-=+V(/5V2D0C50)-=+WV(D215C20I-=+ 1141313

1N707

2%116306 I +6.8V 1n 5.611-REFERENCE

2N16718

03
05 2141306

4.7K

560

2141306

NI306
I K
390

SWITCHING PULSE GENERATOR

-32 V BIAS -24V

1.111K 2002 V4

2NI377

_ IK 50Ft +
50 , '1N0AKN ·

45
(V2N5D-C)
T (W42V55D-C
·

IN 1314

j

1

2.2K

1 -- --AUX--ILIA--RY P--OWER-- S U--PPL--IES -- --

Q20 214250
(ON HEAT SINK)
-24V

FIG. 2--Output voltage can be varied from 2 to 30 volts and load can vary from 0 to 2 amp. Regulation is 0.1 percent or 30 mv, and circuit is short-circuit proof

carries the current flowing in L,

when Q, is off. The wave train on

the emitter of Q, is fed into in-

ductance L,, which, with C,, forms

an averaging network. This voltage

is regulated by Q. and its ampli-

fier. The voltage Eb,,across zener

diode D, is added to E,,, the collec-
tor voltage of Q,,, The balance condi-

tion of the preregulator differential

amplifier is that E,,

E,,,, = E,,,

where E,, is the voltage at the
emitter of Q,,,. This balance is

maintained by controlling the
switching duty cycle of Q,through

the feedback loop.

Output of the differential ampli-

fier in the preregulator controls the

switchover voltage of a Schmitt

trigger that is triggered by a posi-

tive-going sawtooth wave. When
the voltage drop across Q,,, tends to

decrease, the duty cycle control

voltage becomes more positive; the
result is that Q,,is switched on for

a longer portion of the sawtooth
period. Voltage E,,, across Q1,, is

thus equal to E,,,, regardless of E,,.

Figure 2 is the complete schematic diagram of the preregulated
supply. The supply will deliver a regulated d-c voltage adjustable from 2 to 30 volts at currents up to 2 amperes, and it will withstand a continuous short circuit without damage or overheating. Short circuit current may be set to any of three values, depending upon the expected load. An attempt has been made throughout to use commercially available components; no selected transistors or specially wound transformers are required.
High-frequency switching is desirable in that it allows choke L, to have a low value and thus substantially reduces the weight of the supply; also, it gives better transient response. On the other hand
if switching time becomes appreciable relative to the switching period, efficiency is reduced and excessive heating may occur. In the present design a nominal frequency of 1,000 cps has been used. Total switching time for Q., is about 5

percent of the shortest switch-on interval.
The switch must be fairly fast and capable of carrying 2 amperes. The choice lies between a controlled rectifier and a power transistor, but an acceptable power transistor was cheaper and was therefore used. The switching transistor, Qs, a type 2N1073A, has an f,,,, of 1.5 Mc; rise time (turn on) is 0.5 mi-
crosecond and fall time is 4.5 microseconds. Considerable overdriving
is allowed at the base as storage time does not affect the overall circuit operation.
The bias circuit must be able to supply somewhat more current than the maximum anticipated Irno of (),; otherwise Q. will be unable to
turn off at high temperature and
the preregulator will cease to function. Driving voltage is applied be-
tween base and emitter of QB
through transformer T,, and a d-c restoring circuit. For full d-c res-
toration to take place, the forward resistance of the 1N270 diode must

March 9, 1962

63

(A)
(8)
(C)
3-- Wareforms at emitter of Q.: no load (A), fall load (D) and short circuit (C)
be small compared with the input resistance of the following stage. This condition is met if emitter fol-
lower Q: precedes the switching
transistor. Without Q,. however.Q. loads the d-c restorer so heavily that operation is marginal. Both Q, and Q. must have a maximum rating of at least 50 volts.
When full load current is suddenly drawn from the output. all the current must be supplied initially by capacitor C. Current through L. increases to the new level with a time constant proportional to L. Provided the current increase in L. takes place before the voltage across C has dropped to the oulput voltage, no large transient appears at the output. A small value of L. is therefore desirable.
In aconventional supply the minimum value of L. is that which assures continuous current flow with no load. In the present design, however. current flow through L, can bec' me discontinuous since. over a wide range, the preregulator automatically compensates for the tendency of peak detection across C., by reducing the switching duty cycle. The most suitable value of L, is thus the minimum value with which the preregulator is able to maintain a constant voltage E.,,,

across Q... with no load at the out-

put.

In Fig. 2, a sawtooth wave is

generated by unijunction transis-

tor Q, and fed through emitter fol-

lower Q,, to Schmitt trigger. Q:, and

Q.. Duty cycle is determined by

the d-c feedback voltage introduced

to the base of Q, through a 22.000

ohm resistor. A possible alterna-

tive system is that in which a

monostable multivibrator is trig-

gered at a fixed rate, but with its

pulse width modulated by the feed-

back voltage. Such a method was

originally used in this design but

the requirements of wide range,

reasonable stability, and high duty

cycle operation in the multivibrator

makes it the more difficult method

in practice.

The regulator circuit is a high-

loop-gain amplifier capable of pro-

viding a wide range of d-c output

voltage. The latter requirement

makes separate auxiliary power

supplies necessary. High loop gain

is provided by cascading a differ-

ential amplifier with a common

emitter stage. The two 1N2071 di-

odes between the base of

and

the supply output are normally so

slightly forward biased that they

are nonconducting. However, when

the supply is short-circuited, amax-

imum current I. flows through R,

(where R. is R, or R. or R,,) such

that the sum of I.R, and the 17,..'s

of

and Q,, reach about 1.2 volts

(the combined knee voltages of the

1N2071 diodes) ;the diodes begin

to conduct heavily and clamp the

voltage between the base of Q,. and

the output. so that no further in-

crease of current can take place.

The resistance R, (R,, R or R t is

given approximately by R.

(1.2

--

1,, where

is the com-

bined base-emitter voltage drop in

and Q,, with a short circuit cur-

rent I., flowing through Q,.. These

resistors may be wound from resist-

ance wire and adjusted experimen-

tally to give the desired short-cir-

cuit current.

In Fig. 2 the principal functional

blocks are outlined in dashed lines.

Components within these blocks ex-

cept the large capacitors in the aux-

iliary power supplies are mounted

on plug-in boards. Heavier etimpo-

nents are mounted directly on the

main chassis.

Tests made on the power supply

of Fig. 2gave the following results

for an input of 105 to 125 volts.
60 cps: output, 2 to ao wd-c. 0-2
amp; load regulation, 0.1 percent or 30 my; ripple, less than 3 mv rms;
efficiency, 60 percent at full output; current limiting--short-circuit current can be set to 120 ma, 550 ma. and 3 amp by a three-position switch and full regulation is maintained up to 100 ma, 500 ma, and 2 amp respectively; transient response--with a 2-amp current step. the voltage transient has a peak of 150 mv and a duration of 40 µsec.
The voltage across Q,, varies between 3 and 5 volts. The variation is caused largely by the dynamic resistance of the 1N703 zener diode in the preregulator. The value of L, over the range 2 to 200 mH has no effect on static regulation but does affect transient response; the smaller L,, the smaller the voltage transient for a current step. For
L, below about 10 mh, however, the voltage across Q,, cannot be maintained constant without a load. For
L, below about 5 mh, the switch Q. may be destroyed when a short circuit occurs at the output.
Figure 3 shows the waveform of the negative-going switching voltage at the emitter of Q. under no load, full load, and short circuit
conditions. With no load the inductance I,, conducts for about onehalf of the off period of the switch. When conduction ceases, the voltage moves exponentially towards its average value, until the switch again closes. Figure 3B shows that there is continuous conduction in L, under full load. When the supply is short-circuited (Fig. 3C), the duty cycle decreases to maintain the voltage drop E.,.. across Q,.
The sawtooth amplitude control in the switching pulse generator sets the voltage across a, to the desired level for no load and low
output voltage. The level adjustment is set to obtain optimum preregulator performance for full load
and short circuit conditions. The author is indebted to W. G.
Hoyle, R. S. Richards. and J. Humphries for a number of valuable suggestions. Special thanks are due N. J. Gitlin who built and tested the supply.

REFERENCES

1. S. Schwartz, "Seleetn.1 Snaliconductor

Cir,ii Its Itandhooli". John Wiley, 19101,

l'art N.

2. -Transistor Kinks" oValor Instru-

ments Inc.) ·.!, No. 1.

no11.

64

electronics

M arch 9, 1962

More efficient...standardized ground control cable developed with insulation of
TEFLON°100 FEP

The outstanding electrical, thermal and mechanical properties of Du Pont TEFLON 100 FEP resin have been used to prototype a

proposed standardized configuration for ground control cable at

missile launching sites. The new cable offers optimum versatility to permit standardization ...comparable installed cost with

significant advantages in weight and reduced size...improved re-

liability at ambient temperatures from --55° to 60°C., unaffected by

aging, environmental conditions or chemical attack ... and elec-

trical properties far exceeding the requirements of MIL-C-13777.

Tests indicate that the use of primary insulation and internal

jacketing of Du Pont TEFLON FEP resin permits a20% reduction

in diameter and allows asingle cable to do jobs previously requiring four cables.

Sketch of the newly designed cable construction, below, shows

the compact configuration made possible by the use of FEP as insulation.

If you are concerned with the design of ground support systems, consider the various advantages offered by FEP: greatly

reduced electrical cross talk, re-

POWER-CONTROL CABLE

duced size and complexity of cable

CORE: primary insulation--
TEFLON FEP
Jacket of TEFLON FEP

18 power conductors, with
insulation of TEFLON FEP

constructions, improved flexibility and greater reliability under difficult operating conditions.
For more information about the latest developments in wire and

cable insulation utilizing Du Pont

External Shield jacketed
with
TEFLON FEP

Braid of "Dacron"

Reinforced

polyester

neoprene sheath

Braided

separator of

"Dacron" polyester

TEFLON 100 FEP resins, write to: E. I. du Pont de Nemours & Co.
(Inc.), Department E-39, Room
2526 Nemours Building, Wilmington 98, Delaware. In Canada: Du Pont of Canada Limited, P. 0.

Box 660, Montreal, Quebec.

TEFLON®
FLUOROCARBON RESINS
TEFLON is Du Pont's registered trademark for its family offluorocarbon resins, including TFE (tetrafluoroethylene) resins and FEP (fluorinated ethylene propylene) resins.
NT
PAT. OF ,
BETTER THINGS FOR BETTER LIVING ... THROUGH CHEMISTRY

CIRCLE 65 ON READER SERVICE CARD

65

ELECTRONICS REFERENCE SHEET

How to Reduce Distortion

IN DIODE DETECTORS

CHARACTERISTIC

By PAUL FLEMING JR.
Collins Radio Co.. Dallas. Texas

4,,---SLOPE:
e

DEMODULATION attempts to arrive simultaneously at
two mutually incompatible results: to recover the original intelligence through nonlinear elements. and to keep the output free from harmonic distortion that arises from nonlinearity. The first of these conditions is brought about by operating the modulation envelope over acurved characteristic so that the frequency components of the envelope will be
multiplied. In the ideal case the curvature can be obtained
by the intersection of two straight-line segments, so that no harmonic distortion of the modulating frequency will appear in the demodulated output signal. Because abrupt changes in direction and
straight-line characteristics ordinarily do not occur in natural phenomena, it is necessary to investigate the effects of less-than-perfect characteristics.
In Fig. 1, instantaneous voltage across the load

resistor is

= ill,.

(1)

The figure demonstrates the method for solving for current i, which can be expressed by the ex-
ponential series

= a -I-

+11 21,,12 reed -I- · · ·

(2)

where v., = voltage across diode. Terms a,, a. ..

can be found by the LaGrange interpolation method.

Although not rigorously correct because of the nonlinearity of the diode, it can be assumed that

the potential across R,. is greatly attenuated replica

of applied potential e(t). In the typical diode cir-

cuit, the applied excitation is

e = E, sin et + E,,, cos (e -- tu)! -- E,,, ens (e m)l

(3)

Neglecting exponential terms beyond the second order, the current through the diode then will contain the terms d-c, mt, 2mt, cf, 2(c :4= Pet) t, 2ct, (2ct ± m) t.
If this expression is multiplied by the Fourier
series representing a unit-zero squarewave of frequency c, the resulting expression will be valid for
the diode demodulator circuit of Fig. 1.

...· Now with Automatic Electric Laboratories, Inc.. Northlake,

FIG. 1--Graphical determination of instantanem s CUr
rent in circuit containing a nonlinear element

The expression for the current then includes the

frequency terms

d-o
ml 2m1 (e = in)! et (2e = 2m)1 (2e = in)!

2e1 net (ne = m)1 (tn. = 2m)1 (ne = e = mil (ne = e)1

(tie = c = m)1 (ne = 2e = 2m)1 (ne = 2e = in)! (ne = 2c)1 (ne = 2c m)t (nc = 2e = 2,01

where it = 1, 3, 5, 7, .. .

Only the second, third, twelfth and the fourteenth terms are of interest; therefore a simplified rela-

tion for the demodulation products (after substitut-

ing n = 1and grouping) is

ea

itrie,,,[1a2E, alil l)sill or/ -- 02 2- cos 2m1]

(4)

where B, = 2/17 is derived from the amplitude of the

unit-zero square wave. By definition, second harmonic distortion (per

unit) is Ih = E2 EI

(6)

where E.is the magnitude of the second harmonic,

and E,of the fundamental. Therefore,

1)2 =

agE,,, 2
azE 4 al B1

2E, + 2((ti /(12)131

= (E,,,/2)/IE, (21r)(aila2)1

(6)

At first glance, Eq. 6 appears dimensionally inconsistent because all terms except a,/a5 are voltages. However, Eq. 2shows that ai/a,, also is avoltage. Equation 6 shows that for small distortion in the demodulated output, E,,, should be small, E, should be large, and ratio at/a, should be large.
If the percent modulation is kept low, the first
condition will be satisfied. However, Eq. 4 shows that the useful output of the detector (RI.E. [a,. E,,

electronics 66

1 ORIGINAL printed-circuit board set limits for RCA Micromodule Circuits.

MICROMODULE version occupies approximately 50%

of the original reductions.

· volume--can provide

even

further

L

1

MICROMINIATURIZED IN 76 HOURS! with RCA Micromodules

...and backed by 55,000,000 element hours of life-test experience

...THAT'S THE BREADBOARD-TO-OPERATION RECORD RCA ACHIEVED FOR THIS AVIONICS ASSEMBLY WITH RCA MICROMODULES. In just 76 hours, RCA engineers--utilizing the broad flexibility of RCA Micromodules and the wide range of available microelements--made the complete conversion from conventional printed board construction to working Micromodule circuits. Here's the background of proof that makes RCA Micromodules today's answer to microminiaturization:
PROVED RELIABILITY: Over 55,000,000 elementhours of testing have been logged under the RCA Micromodule Reliability Program. Operating life tests demonstrate amean time between failures for RCA Micromodules greater than 560,000 hours for a ten-part Micromodule or a failure rate per part of less than 0.018% /I,000 hours. (All modules were subjected to a series of military-grade temperature-cycling tests.)
BROAD CIRCUIT CAPABILITY: Under RCA's broad experience in Micromodule production over 200 basic circuits have been designed, built and tested. And new circuits are constantly being added. For example, five new computer Micromodules utilizing silicon transistors and diodes are now available for evaluation. The RCA Micromodule concept is highly compatible with anticipated advances in microminiaturization.
WIDE APPLICATION: RCA Micromodules have been designed into military FM receivers, ageneralpurpose automatic data processor, airborne digital

computers, an inertial guidance platform, a digital differential analyzer, pulse-code modulation telemeter equipment and classified military applications.

LOWER COSTS: If you are looking for cost reductions as well as microminiaturization, RCA Micromodules can now show you the way.

CALL TODAY: Like to know how fast your circuits

can be converted to Micromodules? Call your local

RCA Office today for details on RCA Micromodules

(and the RCA Micromodule Laboratory Kit for

building prototype Micromodules in your own

plant). For literature, write RCA Semiconductor

and Materials Division, Commercial Engineering,

Section C -

Somerville, N. J.

RCA Minimodules--miniature packaged circuits utilizing conventional components and transistors--can be supplied in large volume, in the form you need. Consider RCA your packaging headquarters for miniaturized circuits utilizing transistors, rectifiers, diodes. Practically any component you require can
be packaged to your specifications by RCA Engineers.

RCA SEMICONDUCTOR & MATERIALS
DIVISION FIELD OFFICES...EAST: Newark, N. 1, 744 Broad St., HU 5-3900 ·(Camden-Philadelphia Area) Erlton, N. J., 605 Marlton Pike, HA 8-4802 ·Syracuse, N. Y., 731 James St., Rm. 402, GR 4-5591 · Baltimore, Md., EN 9-1850 ·NORTHEAST: Needham Heights 94, Mass., 64 "A" St., HI 4-7200 · SOUTHEAST: Orlando, Fla., 1520 Edgewater Dr., Suite #1, GA 4-4768 EAST CENTRAL: Detroit 2, Mich., 714 New Center Bldg., TR 5-5600 ·CENTRAL: Chicago, III., Suite 1154, Merchandise Mart Plaza, WH 4-2900 ·Indianapolis 5, hid., 2132 East 52nd St., CL 1-1405 ·
Minneapolis 16, Minn., 5805 Excelsior Blvd., WE 9-0676 · WEST: Los Angeles 22, Cal., 6801 E. Washington Blvd.,
RA 3-8361 · (San Francisco Area) Burlingame, Cal., 1838 El Camino Real, OX 7-1620 ·Seattle 4, Wash., 2250 First Ave. S., MA 2-8350 ·SOUTHWEST: Dallas
7, Texas, 7905 Carpenter Freeway, ME 1-9720 ·GOV'T: Dayton, 0., 224 N.
Wilkinson St., BA 6-2366 ·Washington, D. C., 1725 "K" St., NW., FE 7-8500.

The Most Trusted Name in Electronics
CIRCLE 67 ON READER SERVICE CARD

ELECTRONICS REFERENCE SHEET

2

3

2ND HARMONIC DISTORTION -%

Em

0.1

0.01

4 5 6 7 89 1

--40-- 4 -- 0.4 -- --30-- 3 -- 0.3 --

E.0.05

2Ec

Em 2E m

-

2E m

4n, 2

I ,

Em

Ec+

--20-- 2 -- 0.2 --

2

2.5

-- 10 -- I -- 0.1 --

A

a

01/0 2

I ·1

1

FIG. 2--Graph of Eq. 6, giving second-harmonic distortion for relative levels of modulating, carrier frequencies

RANGES OF i OPERATION

DIODE CHARACTERISTIC
OPERATING POINT WITH NO MODULATING SIGNAL
UN MODULATED CARRIER
MODULATION ENVELOPES A. HIGH LEVEL B. LOW LEVEL

FIG. 3--Modulation envelope operates in region set by magnitude of unmodulated carrier
+ A,B,] sin mt) is reduced proportionately with E., hence a limit must be placed on reducing this potential. The last of the criteria can be satisfied if the detector characteristic is linear from the break point, thus emulating the ideal diode. The

term c4 is zero for the perfect diode, and Eq. 6 verifies that the distortion reduces to zero for this
condition. Figure 2, derived from Eq. 6, depicts the second-
harmonic distortion expected for various relative levels of the modulating and carrier frequencies and for various positive values of the parameter a,/a,. If the ada, retie is unity, and the carrier level
is 0.5 unit, the distortion will be approximately 44 percent if the modulating level is one unit (An impossible solution since E,. > 2E. if overmodulation is to be avoided), 4.4 percent for 0.1 unit, and 0.44 percent if the modulating potential is reduced to
0.01 unit. Another, simple, interpretation can be made of
Eq. 6. For a diode curve, such as Fig. 3, assume that the level of the unmodulated carrier establishes a bias point on the characteristic curve. Large
modulating levels cause extensive excursions on either side of the quiescent point, with large distortion in the detected signal. Lowering the modulation level reduces the distortion by minimizing the effect of curvature in the diode characteristic in much the same way as reducing the signal applied
to an amplifier. Low carrier levels permit the envelope to operate over amore curved region, so that the a, term of the exponential series will be large
compared with a,. Increasing the carrier level moves the operation to a more linear portion and
the a, coefficient is made smaller.

68

electronics

SECOND synchros & resolvers
in BuOrd size 23 configuration

ves 23C)(4 smiti et

Ree ve5 23C:4 Co nr-o1 Ironsiermer

CONTROL TRANSFORMERS
TRANSMITTERS
(Dui
3-WIRE SYNCHROS
4-WIRE RESOLVERS

Simplify Data transmission instrumentation--

Eliminate gear boxes component duplication crossover network

DESIGN FEATURES

· 30 second accuracy on production runs
· 20 second accuracy units available on special order
· Stainless steel housings
· High thermal stability
· Compensated and uncompensated resolver models
· Conform to MIL-S20708A requirements

See these Synchros at our display at the I.R.E. Exhibit--
Booths 1305-1307.

Wezze.d

March 9, 1962

Reeves high precision size 23 synchros and resolvers represent a major design breakthrough. Their extreme accuracy enables the design engineer to develop data transmission systems with a greatly reduced number of components for an equivalent over-all system accuracy.
Compare the circuit diagram shown above with conventional instrumentation for a basic data transmission system. Two synchros, two gear boxes, and the crossover network have been eliminated. Weight and space have been reduced by a factor greater than 2, and the system accuracy will directly reflect the superior synchro accuracies. Reliability is improved immeasurably and field maintenance reduced to a minimum.
The new Reeves Synchros are the only 30-second accuracy instruments currently available in BuOrd size 23. The series includes both transmitters and control transformers, available for either 60 or 400 cycle input. Write for Data File 103.

REEVES

INSTRUMENT

CORPORATION

A Subsidiary of Dynamics C011)01(1110/1 of America

Roosevelt Field, Garden City, N.V.

CIRCLE 69 ON READER SERVICE CARD

69

VARIABLE RESISTORS
Complete Line. Whatever you need, CTS has it or can make it to your Exact Requirement.

HIGH QUALITY

CTS' world-wide sales organization will help solve your variable resistor problems.

DIAMETER

POWER
RATING (watts)

RESISTANCE (ohms)

COMPOSITION VARIABLE RESISTORS

CTS SERIES

LOUDSPEAKERS

COMMERCIAL

15/16" 15/16" 3/4" 5/8" 9/32"

1/4-1 1/4 2/10-3/10 2/10-1/4
1/10

200u-10 meg:
250u-15 megs 2509-5 megs 250u-2.5 megs 50012-10 megs

45
70 200 M250

2 & 3 section 1/4-1/3 side by side

2 & 3 section side by side

1/4

2"

2

250u-10 megs 500u-10 megs 5Ku-50 megs

X52 X53 U52
X152" X153*
HVC

'Carbonceramic
MIL-R948

Complete Line

MILITARY
COMMERCIAL MILITARY
(with Space Age High Stability 500°C Metal-
Ceramic Element)

1-1/8"
1-1/8" 15/16" 15/16"
3/4" . 1/2"

2 2 1 1/4 1/2 3/4

10012-10 megs
10022-10 megs 100u-5 megs 100u-15 megs 10012-2.5 megs 100u-2.5 megs

96 95 90 45 65 300*

· 1-17/32" 1-17/64" 1-1/t4" 3/4"
1-17/32" 1-17/64" 1-1/4" ·

4 2 2 1-1/2 to 3

312-25K 3s2-15K 112-50K 1/212-5K

4

322-25K ·

2

322-15K

2

3P-15K

1-3/64' 3/4" 1/2"

3 1-1/2 3/4

100u-2.5 megs 100u-2.5 megs 10012--.5 megs

400t 500t 600

RV4
RV2
RV5 RV6
.Carbon.ceramic
MILR-19 RA30 RA20 RA20

From 3" tweeter ...throuah all-purpose round and el-
liptical .. 15 woofer.
Precision workmanship produces the closest tolerances between moving
coil and magnet. Modern facilities. Request Data sheet P-101 from
CTS of Paducah, Inc., Paducah, Ky.

Request Data Sheet
179 180 175

Iv
COMMERCIAL MILITARY

DIMENSIONS
1-1/4x.295x.350 7/16x5/16x1/2 1-1/4x.295x.350 .344 Dia. x .240

tSemi-precision

RPOeWmEoR (,..m)

RESISTANCE (ohms)

- ESIST.RS

1/4 50012-1 meg 1/8 25012-2.5 megs

1/4 500u-1 meg 1/10 25012-2.5 megs

CTS SERIES
140 220 140 380

Request Data Sheet

80 184
80

"Carbonceramic

el§

1/2x1/2x.260

1

1-1/4x.295x.335 1

100u-1 meg 10012-1 meg

170 180

178 177

Only P.C. sizes are shown. Lead sizes are smaller.

SELECTOR SWITCHES

CERMET FIXED RESISTORS

CERAFER--Cermet resistance

element. Wafers for micromodule systems. Low cost resistor and con-

ductor layouts for printed circuitry

on ceramic. 512-300K per square.

Request Data Sheet 181. CERADOT--Solid cermet,

.050" dia. x .030" long or as

required, 1/10 watt, 5012-

100K, with or without

leads. Request Data

Sheet 185.

.50

NON-DRIFT, COMPACT
1-1/8" dia., 2 to 12 positions, rotary wafer switches for commercial and military applications. Unprecedented switch uniformity from entirely new automated manufacturing concept. Request Data Sheet 182.

·
REMOTE OPERATED VARIABLE RESISTORS
& SWITCHES
Variable resistors with continuous motor drive or electro magnetic step drive. Also available with attached on-off switch.

Founded

1896

C-rs, CORPORATION Elkhart, Indiana

DATA SHEET REQUESTS HONORED PROMPTLY. ASK BY NUMBER Factories coast-to-coast for your convenience: Elkhart & Berne, Indiana; South Pasadena, California; Asheville, North Carolina; Paducah, Kentucky and Streetsville, Ontario, Canada.

70

CIRCLE 70 ON READER SERVICE CARD

electronics

-space age research
ATOMIC PARTICLES WITH A LIFE SPAN OF ONE TEN-THOUSANDTH OF AMILLIONTH OF ASECOND!

We, VOL- GENERATCA
ION SOURCE

Continental Electronics driver system

PrCCTONT MAGNET·
PICCION, TARGET · 2

PROTON ARE A·2

SENDING MAGNET
SwITCH,NG -f MAGNET

OEFLECTING

MAGNET

\

MAGNET BENDING MAGNET
PROTON AREA · I
INTERNAL TARGET AREA

Continental Electronics, specialist in super power electronics equipment, is building the radio frequency driver system for the linear accelerator injector for the proton synchrotron now under construction for the Argonne National Laboratory. This driver system will have apeak power of 5 megawatts, with an average power of 25 kilowatts, operating at afrequency of 200 megacycles with a500 micro-second pulse.
When completed, the Argonne proton synchrotron will accelerate protons to an energy of 12.5 billion electron volts, enabling scientists conducting atomic research to experiment with known phenomena and discover new phenomena that occur when protons of high energy collide with other protons at rest. This collision

usually results in the production of rare, short-lived particles; some with alife span of one ten-thousandth of amillionth of asecond!
To achieve the high energy required to produce these rare atomic phenomena, protons from aconventional ion source are first accelerated to 750,000 electron volts with a conventional high voltage supply. They are then increased to 50 million electron volts by passing through the linear accelerator, reaching final energy of 12.5 billion electron volts in the synchrotron.
Continental Electronics is proud to be a contributor to the Argonne National Laboratory's atomic research program which is dedicated to increasing scientific understanding of atomic energy.

MANUFACTURING COMPANY
4212 SOUTH BUCKNER BLVD. · DALLAS 27, TEXAS · EVergreen 1-1135
SUBSIDIARY OF LING-TEMCO-VOUGHT, INC.

DESIGNERS AND BUILDERS OF THE WORLD'S MOST POWERFUL RADIO TRANSMITTERS

March 9, 1962

CIRCLE 71 ON READER SERVICE CARD

71

SILICONE NEWS from Dow Corning
Improve product quality

Silicone fluids ... proved by test, by performance
A part of proving silicones in the laboratory for performance in your product is the development of realistic evaluation equipment like the ball test cell shown. Developed by Dow Corning, it is used in one of the stringent quality control tests for electrical grade fluids... available in viscosities of 20, 50, 100, 200, 350, 500, and 1,000 centistokes.
Dow Corning silicone fluids have proved themselves outstanding performers as: 1. dielectric coolants ...2. surface coatings ...3. filling and impregnating materials for electronic components and assemblies.
As an impregnant for paper capacitors, silicone fluid decreases dielectric losses, increases permissible operating temperatures, assures uniform capacitance over awide temperature range. In this and other filling and impregnating applications, silicone fluids add to reliability ... often eliminate costly compensating circuits.
As dielectric coolants, Dow Corning silicone fluids can be pumped at high speed without breakdown due to shear. They maintain consistency over arange of --65 to 250 C, will not oxidize or corrode metals._

TYPICAL PROPERTIES OF DOW CORNING 200 FLUID ELECTRICAL GRADE - 100 CENTISTOKES

Nominal Viscosity at 25 C, centistokes __ 100

Viscosity Variation at 25 C, percent max.

5

Flash Point, degrees Fahrenheit, min. __ 575

Electric Strength, volts/mil, min.

350

Dielectric Constant, maximum at 23 C, 100 cps at 23 C, 10 cps

2.75 2.75

at 150 C, 100 cps

2.45

Dissipation Factor, maximum at 23 C, 100 cps at 23 C, 10' cps

0.00008 0.00002

at 150 C, 100 cps

0.004

Volume Resistivity, ohm-cm, minimum at 23 C-500 volts d-c at 150 C-500 volts d-c

1.0 x10" 0.1 x10"

Specific Gravity 25 C

0.968

Refractive Index 25 C

1.403

Pour Point, degrees Fahrenheit

--60

Thermal Expansion Ratiot

1.12

Thermal Conductivity#

0.00037

Volume at 150 C Volume at 25 C

gm-cal *deg C cm sec

ASTM D877, D924, and D1169 tests procedures used to obtain values where applicable.

CIRCLE 289 ON READER SERVICE CARD

Dow Corning is your best source of a broad line of silicone fluids, gels, elastomers and rigid forms for potting, filling, embedding and encapsulating.
72

El out/

orriirag
electronics

... with these silicones

Molding compound for 700 F
A new mineral-filled silicone molding compound developed by Dow Corning in cooperation with Amphenol-Borg Electronics Corporation's research personnel, is designed for: long-term stability at 700 F; excellent thermal shock resistance; low dissipation factor and arc resistance. Used by Amphenol to make military-type connector inserts, this compound has withstood temperatures of 700 F for several hundred hours. Other promising uses include fuses, coil forms, relay parts, tube bases, contactors, arc barriers and switch parts. This compound can be molded by compression or transfer techniques.
CIRCLE 290 ON READER SERVICE CARD

· a> ·

,ar .1* " .44

Sure fire potting of electron gun
This traveling wave tube made by Huggins Laboratories, Inc., is abroad band receiving and transmitting tube used in communications, radar, missile checkout ...other complex electronic gear. It provides: power amplification greater than 10,000 over a two-to-one frequency range; operating band widths to 7,000 megacycles. To assure this performance, precise positioning of the electron gun is vital and must be maintained under all operating conditions. Silastic® RTV, the Dow Corning liquid silicone rubber that cures at room temperature, is used to bond and cushion the gun in position within the capsule. Quick set-up time of Silastic RTV speeds production, while high dielectric strength helps assure performance.
CIRCLE 291 ON READER SERVICE CARD

:n a,..... ,,mew.
imiTiiriilWeei meil·i", MIWIRIMIMIIM

New transparent embedding resin
Tough, flexible, transparent and repairable, Sylgard® 182 is easy to process ...provides excellent environmental protection. This solventless silicone casting resin cures in 4hours at 65 C, 15 minutes at 150 C ...cushions against shock from --70 to 225 C ...assures constant dielectric strength ...resists the effects of ozone, voltage stress, heat aging and thermal cycling. Faulty components can be exposed, replaced and the repair area filled with new resin. Sylgard 182 and its curing agent are not toxic to the skin, nor do they give off toxic fumes or exothermic heat during blending or cure.
CIRCLE 292 ON READER SERVICE CARD

····

, -to ao.

Ire

Free 12-page manual, "Silicones for the Electronic Engineer". Write Dept. 4203, Dow Corning Corporation, Midland, Michigan.

Visit Our Booth 4309-4311, at IRE Show

March 9, 1962 73

75m" :·ingnierSary

THE ONLY TEFLO SOCKETS ON TH

RANSISTOR ARKET!

69012.0523 Compression Mounted
Transistor Sockets

69012 0524 Compression Mounted
Transistor Sockets

69012.0533 Compression Mounted
Transistor Sockets

69012.0534 Compression Mounted
Transistor Sockets

69018.0523 Compression Mounted. in Line Transistor & Sub
Miniature Tube Sockets

69018.0524 Compression Mounted, In Line Transistor & Sub Miniature Tube Sockets

69013.0523 Compression Mounted. In Line Transistor & Sub.
Miniature Tube Sockets

69013.0524 Compression Mounted. in.Line Transistor & Sub· Miniature Tube Sockets

69013.0525
Compression Mounted. In·Line Transistor & Sub Miniature Tube Sockets

69013.0526 Compression Mounted. In Line Transistor & Sub Miniature Tube Sockets

69013.0527 Compression Mounted. In-Line Transistor & SubMiniature Tube Sockets

///690120623 Compression Mounted

(

Transistor Sockets

LOW LOSS AT HIGH FREQUENCIES ... SUPERIOR PIN RETENTION

With Teflon TFE insulation, Garlock Transistor Sockets exhibit the lowest

dielectric loss ever achieved at high frequencies. In addition, silver-plated,

gold-flashed Beryllium copper tubular-type contacts give greatly improved

pin retention and life characteristics, offer top protection against vibration.

Garlock Transistor Sockets of Teflon are available from local stock. For full

information, contact the Garlock Electronic Products distributor or representative nearest you. Or, write Garlock Electronic Products, Garlock Inc.,

Camden 1, New Jersey.

*DuPont Trademark

The only socket for JEDEC TO-8 type cases (new RF power ampli· fier transistors). Teflon insulation reduces RF losses to an absolute minimum. Use of a socket prevents transistor injury by overheating when soldered into circuit.

·;e,"c.'t,O3s4
I 1c.

.

ELECTRONIC PRODUCTS
VISIT OUR BOOTH 2814-2816 AT THE I.R.E. SHOW

74

CIRCLE 74 ON READER SERVICE CARD

ANOTHER ADVANCED MICROWAVE TUBE DEVELOPMENT FROM RAYTHEON'S SPENCER LABORATORY

etiefedinige·goilieere
14..44r1e1i·i11i1e11>-à-
.,t11110*.
RAYTHEON PHASED ARRAY ASSEMBLY includes Amplitron' ferrite circulator and TWT in single package. Complete assemblies are precisely matched mechanically and electrically to provide identical performance throughout the array.
-Raytheon Trademark

,our

)enIrl*
eue 111000».-
Veis

Raytheon tubes bring new modular solution to phased array problems

TYPICAL OPERATING CHARACTERISTICS

Model CLM Circulator*

QKW 1013 QKS 1012

TWT

Amplitron

Peak pwr.

15 kw

Pk. power out.

5 kw

100 kw

Average pwr.

800W

Av. power out.

400W

2.5 kw

Frequency (Mc) 1215-1400

Frequency (Mc) 1215-1400 1215-1400

Isolation

18 db mm.

Cain

50 db

13 db

Insertion loss 0.4 db max.

Efficiency

20-25%

70%

VSWR

1.25

Pulse dur.

750iis

500s

*3 port Wye-junction circulator with load.

New permanent magnet concept makes possible half
wavelength mounting of transmitter tubes
Raytheon now has an advanced Amplitron, TWT and ferrite circulator for modular mounting in a permanent magnet lattice. The new assembly provides excellent efficiency, bandwidth and gain over awide range of power output levels. The TWT-circulator-Amplitron assemblies are expressly designed for minimum noise and uniformity of phase and gain characteristics from unit to unit. To provide greater operating flexibility, the TWT employs amodulating anode and isolated collector.
Raytheon can offer the new combination at low cost and in large quantities. Write today for complete technical details. Address Raytheon Company, Microwave and Power Tube Division, Waltham 54, Massachusetts.

RAYTHEON

RAYTHEON COMPANY

MICROWAVE AND POWER TUBE DIVISION
See us at the IRE Show--Booth 2611-2612

Highly Reliable
HITACHI "SEMI-CONDU ORS"

2S A1 2SA4 2SA42 2SA86 2SA20
2SA20
2,S4A21 2Ste66 2S80 2$868
2SB81 2S138 2SC8 2SC90 2SC91

For Industrial Use Switching Transistors and Diodes
Hitachi semi-conductors provide the basis for the excellent capacity of the Hitachi Electronic Computer HITAC 103.
1N34/0" 1N35 1N38A 1N56A7 1N613 1S7 7 1S78 ) 1S 79 1S84 ) 0

Back of H1TAC 103.

76

CIRCLE 76 ON READER SERVICE CARD

Cable Address "HITACHY" TOKYO
CIRCLE 77 ON READER SERVICE CARD

Typical AlSiBase ultra-thin ceramic--.015" thick

.0001 in production quantities.

AlSiBase ceramics, announced early in 1961, set new standards for flatness and thinness plus uniformly superior surfaces. These ceramics, developed by American Lava Corporation, are frequently furnished

metallized and with holes, slots and serrations held to exceptionally tight typical tolerances.
These typical tolerances meet a wide range of requirements. But with the march of design and progress on

Booth 4401 at I.R.E.

sub-miniatures, there are requirements for even closer tolerances.
With the addition of grinding, tolerances of plus or minus one tenthousandth are now met regularly and in production volume by techniques developed at American Lava. If your requirements demand these closer tolerances, we will be glad to discuss them with you.
Progress on ceramics has been accompanied by progress on precision metallizing in the several metal to ceramic bonding processes. American Lava offers the widest variety in ceramics and in metallizing process available from a single source. It also has a wide margin of leadership in production quantities to close tolerances. Our technical men will work with you toward developing the most practical and economical solution to your requirements if you will tell us your operating conditions.

A Subsidiary of Minnesota Mining and Manufacturing CorKpany

AMERICAN LAVA
ORPORATION

CHATTANOOGA 5, TENN. (
61ST YEAR OF CERAMIC LEADERSHIP

--711erF-- or service, contact merican Lava representatives in Offices of Minnesota Mining & Manufacturing Co. in these cities (see your local

telephone directory): Boston: Needham Heights, Mass.

· Chicago, Bedford Park, Ill. · Cleveland, Ohio

· Farmington, Mich.

Laurens, S. C. · Los Angeles, Cal. · Milwaukee, Wis. · Metropolitan New York, Ridgefield, N. J. · Up-State New York: Newark, N. Y.

Philadelphia, Pa. · Richardson, Texas · St. Louis, Mo. · St. Paul, Minn. · South San Francisco, Cal. · Seattle, Washington.

All export except Canada: Minnesota Mining & Manufacturing Co., International Division, 99 Park Ave., New York, N. Y.

FAIMMIEINIIIEM

IMP& 7,a-arglaillferZ

MUM

.-·,>

ISM

NOW '-r:·.r.% ·..

MIIIIMEENNE

EMMEMMWERMigniet,

gravel·tate (griivii.oet.), v. move as if influenced by gr

elaw of g ion grav,i·tati

gravridaftion phenomenon that any two will be accelerated towa gravlistaition·ably eadv.

1.

ravitating.

cies or hoc

h

gravii

ta' e(grIvrie«

gravlisty (grâvq·ti), n.;

gravitas, fr. gravis heav 3

ousness; solemnity; im rtan

matter. 3. Ponderabi y; ais

gravity. 4. Physics. tional acceleration of t b Loosely, gravitation

Terre estria, gener

gravity; working or o ated

[F. or tate quality ( enor y. 2.
now 'al gra ation;
ies to trd the cSpe cgray* vity; agra

purposeful imagination....in space

The men of Aerospace probe all disciplines of the space sciences. Chartered exclusively to serve the United States

Government, Aerospace Corporation applies the full resources of modern science and technology to advanced space and

ballistic missile systems. D As part of the Air Force-science-industry team, the men of Aerospace evaluate and stimulate the free flow of information that results in the imaginative concepts required for national leadership in space. From concept to countdown and beyond, Aerospace provides advanced systems analysis and planning; theoretical and experimental research;

general systems engineering and corresponding technical direction of programs. D Aerospace Corporation, an equal opportunity

employer, now needs more men to meet these responsibilities. Highly skilled engineers and scientists with advanced degrees,

knowledgeable in interdisciplinary problem solving, are urged to contact Mr. George Herndon, Room110 ,Aerospace Corpora-

tion, P. 0. Box 95081, Los Angeles 45, California. o Organized in the public interest and dedicated to providing objective leadership in the advancement and application of science and technology for the United States Government. 78

AEROSPACE
CORPORATION
electronics

BENDIX NOW OFFERS... the Pygmy SE electrical connector

INTER-MATE-ABILITY PLUS MILITARY STANDARD CRIMP CONTACT GEOMETRY

There's a new addition to the growing Pygmy family--the SE series of Pygmy" Electrical Connectors. This new series gives complete inter-mate-ability with several mil lion PT and SP solder type, CE crimp type and MIL-C 26482 connectors.
The combination of proven Bendix Pygmy materials and designs with MIL-C-26636 contact geometry and MS3190 wire well area eliminates wiring diagram changes and costs, retains solder option, and provides contacts compatible with standardized application tooling. Want more facts? Write us today. The Bendix Corporation, Scintilla Division, Sidney, New York.
Canadian affiliate: Aviation Electric, Ltd., 200 Laurentien Blvd., Montreal 9, Quebec. Export Sales &Service: Bendix International, 205 E. 42nd Street, New York 17, N. Y.
Send for your free campaign button and acopy of the Pygmy SE connector folder.

For Convenience, Efficiency and

Economy, Join the Bendix Campaign in

IP

Support of Evolutionary Connector

CIE jSpecifications

/

-- Y

MI Inter-mate-ability ... with millions of Pygmy

connectors now in the field.

· Military Specifications ... BUWEPS and Signal Corps

II Termination Option ...crimp or solder, depending on the application.

II Shell Finish Option ... cadmium or alumilite. III Wire Sealing Option ... grommet or potting seal. Ill Strain Relief Option ... in both basic series.

II All Shell Styles ... widest possible user choice. III Full Range of Shell Sizes ... 10 thru 24.
· Multiple insert Patterns ... 20 tooled--continually expanding,

II User Engineered ...evolved from 6 years of Pygmy field experience.

BENDIX CONNECTORS--BENDIX CABLES: DESIGNED TOGETHER TO WORK BEST TOGETHER
BE SURE TO VISIT THE SCINTILLA EXHIBIT AT THE NEW YORK I.R.E. SHOW

Scintilla Division

r`ren d#00
CORPORATION

March 9, 1962

CIRCLE 79 ON READER SERVICE CARD

79

The Future of Your Business
MAY DEPEND UPON HIS EDUCATION

The young mind which today discovers an old principle may someday reveal anew one capable
of revolutionizing your business and creating undreamed of growth. But this is possible only if he gets the finest education we can offer.
By the time today's youngsters are ready for college, business and industrial technology will be even more complicated and will require many more trained specialists. To fill this order we must provide our young people with the best possible college educations.

Unfortunately many colleges are already overcrowded. In ten years applications are expected to double. We will need more and better college classrooms and libraries, more efficient college laboratories, and additional top-quality professors. You can help assure your own future by helping the college of your choice.
If you want to know what the college crisis means to you,
write for a free booklet, "OPEN WIDE THE COLLEGE
DOOR," to Higher Education, Box 36, Times Square
Station, New York 36, N.Y.

Published as apublic service in cooperation with The Advertising Council and
the Council for Financial Aid to Education

\ HIGHER EDUCATION
allMma KEEP IT BRIGHT

80

CIRCLE 81 ON READER SERVICE CARD->-

,lA'r2Ê),2f22

Imperial...bright new way to effectively boost your overall plant safety program. Ungar 3-Wire grounded safety cord sets in matched colors make this the safest soldering iron ever created. Specify the revolutionary "operator-safe" Imperial with complete confidence when you order soldering irons!

2P2e2sP22,3Z Mere

Accepted standard of the electronic industry

UNGAR ELECTRIC TOOLS

E-3-62

Electronic Division of Eldon Industries, Inc.

P. 0. Box 1007, Hawthorne, California

Please send me free full-color IMPERIAL brochure!

NAME COMPANY

TITLE

ADDRESS

CITY

STATE

00000

IMPERIAL

STRAIN RELIEF

CORD CONNECTOR

HANDLE KEYWAY

HANDLE

HEAT SINK FLARE

HEAT CARTRIDGE

ELEMENT SPACER

MINI-TIP® THREAD-ON SOLDERING TIP

RESEARCH AND DEVELOPMENT

v ,,, .HN I t

k ,

9

e 410,41.

04.

l·a
ei

ire fee,

0·ri. 4

·X' 4>

0, .1 9N1 31.

SPECIAL

Modulation Extends Airborne Surveying Range

By W. J. ROBINSON
Markham, Ontario

EXPERIMENTAL airborne electromagnetic survey indicates that the detection range for this surveying technique can be greatly increased. The greater detection distance results from modulating the power energizing a long cable on the ground and from modifying the detection equipment in the aircraft.
Ground surveying is often done using a grounded cable energized by a low-frequency motor generator. The same method can be used for airborne surveys with the aircraft flying across the cable at right
angles. However, a cable 20 to 30 kilometers long is required, and the cost of laying the cable is high,
particularly where there are no convenient roads. Because of the

Hh
FIG. 1-- Return flow in medium produces horizontal field component perpendicular to wire
limited range of airborne electromagnetic surveys, they have therefore fallen into disfavor.
Current passing through a long straight wire grounded at both ends and on the horizontal surface of a semi-infinite medium of low conductivity produces a field. At any point on the surface, on a line perpendicular to and crossing the cable, the horizontal component of

Atlantic Cable Telephone Repeaters

THE FRONT COVER. Bulkheads to protect submerged telephone repeaters from high pressures of the Atlantic Ocean bed are inspected at Standard Telephone and Cables, Ltd., British affiliate of ITT. Gold plating on major inside metallic surfaces reduces possibility of metallic whisker growth that could cause short circuits during long untended life
82

the field resulting from the current in the wire is zero. However, the horizontal field component perpendicular to the wire resulting from return flow in the medium is FL _--I [a/ (ce + 82) + b(b2 + s2)] 10' gauss, where I is current in amperes, s is distance of the point from the wire in meters, and a and b are distances from the line to the ends of the wire in meters, as in-
dicated in Fig. 1. With 2 amp in a 20-Km cable, H.
at 10 Km from the cable is less than 2 x 10 -7 gauss and at 20 Km is less than 10-7 gauss. Surveys with single-frequency sine-wave excitation have given somewhat smaller values of Hh,particularly where overburden has had relatively high conductivity. This effect has been checked with model studies. It has been concluded that maximum range us-
ing adetector with maximum sensitivity of 10' gauss is about 10 Km on either side of the wire.
The effect of cable current very near the cable overrides all other effects so that no useful survey results are obtained. For this area, Hh should be approximately IL I [al (ce + e) -- ah/s' (ce + e) 1 + b/(b' ± s2)-- bh/s2 (1)2 ± s')q 10' gauss, where h is terrain clearance of the aircraft, which is usually 100 meters.
In a test survey in southern Ontario, a 20-Km cable and a 3-Kw, 1,000-cps motor-generator with the generator field excited by a 60-cps voltage were used. The power supply modulation permitted use of an amplifier-detector with large overall gain, flat frequency response between 925 and 975 cps, and a large rejection factor for noise originating in the aircraft. Generator frequency was kept between 925 and 975 cps.
The detector used in the airborne system in Fig. 2 comprises two coaxial coils mounted 0.75 meter apart to limit mutual inductance. Each coil is parallel tuned by a
electronics

\\

A //

FINE WIRE

SPLICE

_ ,

IN

/_-

-12 SECONDS --

'' FLAT! \\\

and AMP makes it possible ...without solder!

When you use solder to splice very fine magnet wire (34 to 44 gage or finer) to stranded lead wires, you usually end up doing a very slow burn. You get time-
consuming stripping problems . . . unreliable wire damage or even wire breakage ...cold solder joints ...oxide contamination ...high labor costs. And speed? Your best might be a splice a minute. The new AMP-FINE -Y -R Splice gets rid of these problems, and it
does it fast--once every 12 seconds, 5 times a minute, 300 fine wire splices an hour--for all fine magnet wires from 34 to 44 gage or finer, and for all stranded lead wires 26 gage and finer.

The splice is mounted on Mylar* tape, which is fed into the crimping mechanism of a special air and electric AMP machine. Stripping wheels built into the machine quickly strip the fine wire insulation. An operator then places the stripped fine wire and stranded lead wire into the splice, actuates a foot pedal, and the splice is finished. Twelve seconds ...one splice. No burning, no cold solder joints, no wire damage. No heat oxides form. And the Mylar insulates one side of the splice.

If you're designing transformers, relay coils, solenoids,

inductors, feed coils, or any other product that involves

fine wire splices, you need the AMP-FINE -Y-R splice.

Write to AMP today for complete specifications.
AMP

*Trademark of E. I. Du Pont Nemours g Co.
Visit us at the

I.R.E. SHOW

INCORPORATED

Booths 2527-31 March 26-29

Harrisburg, Pennsylvania

AMP products and engineering assistance are available through subsidiaiy companies in: Australia · Canada · England France · Holland · Italy · Japan · Mexico · West Germany

March 9, 1962

CIRCLE 83 ON READER SERVICE CARD

83

what's best for READOUT of BINARY DATA?
the "Applications-Oriented"
SWITCH

Fig. I Beam-X Switch Decoder Circuit

Fig. 2 Typical All-transistor Decoder Circuit

Now, Beam-X Switches are "applicationsoriented" for optimum performance of specific digital functions. Typical is the new Type BX2012, a Beam-X Switch designed to provide the ideal method of converting Binary Coded Decimal data to Decimal form. Ten electrical outputs drive Nixie Indicator Tubes or printers for visual presentation of the binary data.
Figure I illustrates the simplicity of a typical Beam-X Switch Decoder circuit. It also shows the compatability of the Beam-X Switch with semiconductor devices. Only 41 components are required to sample and store the BCD information in decimal form. In addition, the Beam-X
Switch Decoder:

Now look at Figure 2, atypical all-transistor decoder which performs the same function. Almost four times as many components are required ... increasing cost, size and circuit complexity.
Beam-X Switch Decoder performance is available in component or in complete plug-in modular form. Units are available to handle such codes as 8421, 2421, 4221, 5311, Cyclic Gray and other BCD codes. The complete module price ...$85 in single quantities ...makes it the lowest cost, all-electronic binary decoder commercially available.
Write today for our new Circuit and Applications Brochure on the new "applications-oriented" Beam-X Switches and Modules.

e PROVIDES AUTOMATIC MEMORY · ACCEPTS 4-LINE BINARY INFORMATION · NEEDS ONLY 1-LINE ADDRESS · DECODES THE DATA IN 10 ',SECS

ANOTHER

ELECTRONIC

CONTRIBUTION

Br

Burroughs Corporation

ELECTRONIC

COMPONENTS

PL^INFIELD. NEW-1E14Sr!

olvls.on

Please see us at IRE show booths ±--1211-1213-1215 -11.111MPF"

CIRCLE 84 ON READER SERVICE CARD

the stock market comes
to

IRE

Visit the Burroughs booths 1211 -1215 to see Ultronic Systems Corporation's SDP-4000 "instant quote" unit, featuring Burroughs' BEAM-e Switches and NIXIE°Tube Readouts. Once again, Burroughs Corporation brings new products and techniques to IRE.

ANOTHER ELECTRONIC CONTRIBUTION BV
Burroughs Corporation

ELECTRONIC COMPONENTS PLAINFIELD. NEW JERSEY

DIVISION

CIRCLE 85 ON READER SERVICE CARD March 9, 1962

DEI

950-CPS AMPL

5X AMPL

RANGE SHIFTER 60-CPS
AMPL

DEI RANGE SHIFTER

V
DEI

DEI

60-CPS AMPL

DET

D-C AMPL

·HHEIB RECORDER e--

D-C AMPL

corded while the other switches.

The test survey indicates that

noise is less than 3 x 10 gauss

and probably could be reduced with

further refinements. Effective re-

sults can be obtained 20 Km from

the cable.

The work described was done at

Lundberg

Exploration,

Ltd.,

Toronto, the assets of which are

now owned by Leach, Hobbs and

Brown, Geophysical Instruments,

Toronto.

FIG. 2--Detection system provides
large overall gain and flat response from 925 to 975 cps

Speedy Tube Warmup Will Be Described at IRE

nominal 0.003-microfarad capacitor in series with 3,300 ohms resistance. Values are chosen to tune one coil to 930 cps and the other to 970 cps, giving the pair a flat detection characteristic over the generator
frequency range. Overall sensitivity of the two coils is 20 times that of a single untuned coil so that a 10' gauss field induces 400 microvolts in the detector at 950 cps.
The first conventional 950-cps amplifier has two twin-T feedback networks to reject unwanted frequencies. Output is fed to a channel with maximum sensitivity of 10' and another channel with maximum sensitivity of 5 x 10'. The more sensitive channel has an added amplifier with a gain of 5 and additional filtering.
Signals from both channels are detected, yielding 60-cps outputs that are fed to range shifters. The range shifter for the more sensitive channel reduces gain by a factor of 25 when a signal of 10' gauss is reached. Gain of the less sensitive channel is reduced by afactor of 30 when a signal of 5 x 10' gauss is reached. Thus four detection ranges
are provided of 10', 5 x 10', 2.5 x 10' and 15 x 10' gauss.
One channel is recorded continuously while the other is switching,
which is plrticularly important where anomalous conditions make rapid switching necessary. Range shifter output is amplified further, filtered, detected and used to drive a dual-channel d-c recorder. The range shifters are Schmitt circuits with plate relays that switch gain
at predetermined signal strength. Hysteresis effects are not important because one channel is always re-

HEATER-TYPE developmental receiving tube warms up in 1.3 seconds. The warmup time of conventional radio and television receiving tubes
is about 11 seconds, while the ceramic-type tubes used in the tests usually require 25 seconds.
The techniques used to attain the fast warmup will be described at the 1962 IRE show in a paper by J. M.
Connelly and D. D. Mickey, Receiving Tube Department, General Electric Company. The limited time required for the tube to reach its
normal operating condition after
power is applied is considered to be a significant advantage in space and military electronics equipment.
The fast warmup is also desirable in entertainment equipment.
Two techniques were combined in
the development work that resulted in the 1.3-second warmup tube. Bonding the heater to the cathode (they were kept isolated from each
other electrically) provided for heat transfer by conduction. Heat is usually transferred to the cathode by radiation. Inserting aballast resistor in series with the heater
caused a relatively high initial surge of current.
Apparently two additional benefits will result from the new type heater-cathode construction. The
greater physical strength of the structure can be expected to provide higher reliability, and the heater operates at a substantially lower temperature than is normally required. Radiating heaters of the type under development usually operate at 1,400 degrees C, while the
bonded heater-cathode structure requires a temperature of only 775 to 800 C.

85

NOW 1000MC MEASUREMENT
WITH FREQUENCY COUNTERS
The model 14-26c, a 1 KMC Frequency Converter, is aplug-in unit for use with the Northeastern Engineering Model 14-20c Frequency Counter/Standard, and counters of other manufacturers.

Technical specifications:

· Frequency range · Input voltage
(min.) · Input impedance · Accuracy
· Power requirements
· Weight

200 MC to 1KMC
100 millivolts RMS 50 ohms, approx. -1-1 count, ± accuracy
of counter
furnished by counter 5 pounds

I.R.E. SHOW

Booth #3232

NORIiiHEAS rum EDENPTG.IAiNCE.EMARNICNHGESTlE,RNCNEWPHAMPSHIRE AFFILI

CIRCLE 227 ON READER SERVICE CARD

500 TO 1000

MC

Applied Research inc.
76 South Bayles Avenue, Port Washington, N. Y.

BROADBAND

AMPLIFIER

VERSATILE Design
(gain per stage) x (number of stages) = galn

'711 ,
1,"11
111,1 1
"111111 1111111,

RF OUTPUT

APPLIED RESEARCH INC.
WASNING ,ON, NEW YORK
RF AMPLIFIER MODEL HFW 6(A1 50100

FUSE

EXAMPLE

REQUIRED -20 db gain, 500 to 1000 mcs
SOLUTION -Applied Research, Inc. HFW-6 (A)-50100
Gain: 22 db Noise Figure: 10 db Input and Output: 50 ohms

FOR DATA on this product, or on . .integrated RF components . ..low noise amplifiers

band pass filters

octave amplifiers

broadband varactor frequency

multipliers

multiplexers

Write, Wire or Phone: APPLIED RESEARCH, INC.

76 S Bayles Ave. Port Washington, N. Y. Telephone PO 7-8707 (area code 516)

ON
101 1
AVAILABLE
NOW
from our expanded Octave Amplifier
(HFW) Series

86

CIRCLE 86 ON READER SERVICE CARD

CIRCLE 87 ON READER SERVICE CARD

ICLL. VITE
CLEVI1
*MUM
4ffling
AMMO
CLEVITE
111 CLEVITE

e
TL-205A TL-4.09A TL-6012A TL-8016A TL-10018A TL-16025A TL-20032A TL-30045A TL-4.0055A TL-4.5060A TL-32E4.8C TL-50085C

111

-

2 kc

4. kc

6 kc

8 kc

10 kc

16 kc 20 kc

30 kc

4.0 kc

45 kc

32 kc

50 kc

Clevite

Ceramic

(suffix "A" denotes 455 kc center frequency; suffix "C" denotes 500 kc center frequency)
Ladder Filters

Now in stock in 12 bandwidths... 80 db rejection in 0.1 cu. in.

Clevite ceramic ladder filters provide more selectivity for their size than any conventional i-f filter. They are fixed tuned and need no alignment--are non-magnetic and non-microphonic. Leading manufacturers now have Clevite ladder filters in their communications equipment. Improve your newest design with these unique filters. Write now for complete specifications--Bulletin 94012, or for selectivity curves available on each stock model. · Dimensions: 5/16" diameter x11 /2 "long. S Selectivity: 60 db/6db shape factor from 1.3:1 to 2.6: 1. · Center Frequency Stability: within 0.2% for 5years, and within 0.2% from --40° to +85° C. II Impedance: 1200-1500 ohms. · Designed for military environment.

CLEVITE ELECTRONIC COMPONENTS
DIVISION OF CLEVITE 232 FORBES ROAD, BEDFORD, OHIO

VISIT CLEVITE BOOTH 2616-26 AT THE I.R.E. SHOW
Field Sales Offices:
New York, N. Y. /Chicago, III. /Denver, Colo. /Inglewood, Calif.

don't settle for less than a designed with your application in mind

MODEL 650 DIGITAL VOLTMETER

MODEL 550 DIGITAL VOLTMETER

five-digit, all-electronic, 0.0001 to 1200.0 V dc, $1850 ...The Model 650 meets the difficult requirement of providing five-digit operation at low cost. Reliability is maintained by the use of Burroughs Corp. long-life indicators and switching tubes in a specially designed circuit. Accuracy, particularly in comparison applications, exceeds that of many bridge-type instruments (0.01%). The infinite-input characteristics found in other Franklin instruments is a standard feature of the Model 650. Automatic polarity sensing and indication
are also standard. Optional features in-
clude automatic range switching.

dc, ac, ohms in one digital instrument at the flick of a switch ...Probably
the most versatile digital instrument available at any price. Uses the new Burroughs long-life Nixie® Indicators and Beam-x® Switching Tubes. Allelectronic operation; modular con-
struction throughout. Standard features include automatic polarity indication, effectively infinite input impedance, internal calibration cell, fourposition noise-rejection filter, high long-term stability. Also available in standard 19" rack-mounted version. Options, as in the other Franklin instruments described here, include provision for direct printer operation.

all-electronic with exclusive Burroughs Corp. long-life Nixie" Indicators and Beam-x! Switching Tubes in counting cir-
cuits ... Extraordinary mechanical and electrical integrity are the major features of this instrument. In all tests the Model 550 has demonstrated an almost impervious resistance to tampering and mechanical shock. Applications encountered to date, show that the instrument is capable of stable operation
under a wide variety of environmental conditions. Range is from 100 microvolts to 1200 V dc. Automatic polarity sensing and indication are standard. Options include automatic range switching.

SEE THE TRANSISTORIZED MODEL 1500 IRE BOOTH 3838

M ee)

electronics, inc. G-EPCDR. -1` · 1='INTr-srs-e-r._. -v-...b.r·zi.A.

eBea m-X and Nixie are trademarks of the Burroughs Corp.

Take an engineer's critical look at
MERCURY-WETTED CONTACT RELAYS
***by W--elieeja***
Your product demands asuperior relay? Can't tolerate contact bounce, welding or pitting? Must have billions of operations? Need fast switching ... complete stability and reliability? Our JM Series mercury-wetted contact relays meet all these requirements. No other type relay gives you the combination of all these features:
Loula LIFE BILLIONS OF OPERATIONS

HIGH (100 cps) SPEED
SUPERIOR, RELIIIIILITI

RELAY S

JM Relays are now available at your local electronic parts
distributor.

ENGINEERING SPECIFICATIONS
Speed: SPDT Operate: 3 milliseconds (approx.) at 2 watts. Release: 3.2 milliseconds (approx.).
Contact Rating: 5 amperes maximum, 500 volt maximum, 250 volt-amp max. (with required contact protection).
Contact Configuration: Each capsule SPOT., combination of capsules in one enclosure can form DPDT, 3PDT, 4PDT. (All Form D.)
Terminals: Octal type plugs, 8 and 11pin; Solder lugs; 14 or 20-pin miniature; AN connectors.
Coil Resistance: 2to 58,000 ohms.
FREE CATALOG
WRITE TODAY

e POTTER G BRUMFIELD
DIVISION OF AMERICAN MACHINE & FOUNDRY COMPANY · PRINCETON, INDIANA IN CANADA: POTTER & BRUMFIELD, DIVISION OF AMF CANADA LIMITED, GUELPH. ONTARIO

WRIGHT L_
ILETRIOTIKS DPASAm
Pcv,P

MODEL PRY-4 PEAK RE MANG VOLTMETER
DISK AV

RESET

READY

PRINT

Capture...then Read

THE FIRST PEAK OF ANY VOLTAGE
Single Transient Peak Reading Voltmeter
FOR: Blast Studies -- Shock Studies -- Transient Voltage Measurements on Aircraft Power Busses -- Measurement of any single transient phenomena which may be characterized by a voltage pulse.

The Model PRV-4 Single Transient Peak Reading Voltmeter is designed to accept and display the first value of apositive or negative voltage pulse of arbitrary shape within specified limits. Readout is provided as a four digit decimal value directly in volts with a fifth digit
for over-range indication. First peak voltage detected

blocks further input values until reset. A four line l-22-4 coded output line is provided for external printout. The PRV-4 will read out peak amplitude of rectangular pulses of one microsecond or greater pulse width. Readout cycle time, 1 millisecond with accuracy of 0.5%
of absolute or 10 counts. Range 30 MV. to 1000 V.

Write to Intermountain Branch for complete specifications on the PRV-4 and other models, or for information on custom units available for unique require-
ments.

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ELECTRONICS DIVISION

INTERMOUNTAIN BRANCH

CURTISS-WRIGHT CORPORATION
P.O. Box 10044 · ALBUQUERQUE, N. M. · PHONE: 345-1661 · TWX: AQ-69

electronics

STRONG!
Tensile strength: app. 1000 lbs. psi

DISPOSABLE "TRU-TOUCH" GLOVES
with the greatest fingertip sensitivity ever developed!
This revolutionary new Wilson glove gives you all three of the things you want most in a disposable industrial glove for inspection or small parts handling. It's thin ...so sensitive you can feel your beard through it, tell whether a dime is heads or tails, feel every tiny dot in a book of Braille! It's strong ...made of PVC with a tensile strength of approximately 1000 psi. It's inexpensive ...7c a glove, 14c a pair, even less in quantity! You get superior fit without the "snap" or constriction of latex. Touch is never numbed. Ask your Wil-Gctrd distributor for literature and samples.

THIN!
Actual thickness: .006 of an inch
DISPOSABLE!
Cost: only 7c aglove

SOLD ONLY THROUGH DISTRIBUTORS

March 9, 1962

THE

WILSON RUBBER C'DMPANY ·RIALd,N CANTON 6, OHIO
A Division of Becton, Dickinson and Company · Pacific Coast Warehouse: 530 Howard St., Son Francisco 5, California

CIRCLE 91 ON READER SERVICE CARD

91

Regardless of its size, type, or frequency any crystal bearing the name
D£PfCat-1
can be relied upon to deliver the ultimate in frequency control despite wide temperature
variations and extreme conditions
of shock and vibration.

METAL ENCASED STANDARD SIZE AND MINIATURE CRYSTAL UNITS

M-1 (HC-6/U)

shown actual size

M-20 (HC-18/U) M-21 (HC-18/U w/pins)

The crystals that made the name of McCoy asynonym for quality. Metal encased, HC-6/U size is available in frequencies from 500.0 kc to 200.00 mc.

Fills the need for miniature crystals in frequencies from 2.5 mc to 200.0 mc. Meets specs MILC-3098B and ARINC No. 401.

ALL GLASS STANDARD SIZE AND MINIATURE CRYSTAL UNITS

shown actual size

G-20 (Military HC-26/U)

G-1 (Military HC-27/U)

G-21 (Military HC-29/U)

This vacuum sealed, hard glass crystal unit possesses all of the quality features for which the McCoy M-1 is so famous. It has long term frequency stability five times better than the conventional metal types. Available in frequencies from 500 kc to 200 mc.

This vacuum sealed, hard glass crystal unit meets the new CR 73/U and CR -74/U specifications. It has long term frequency stability five times better than the conventional meta4 type. Available in frequencies from 5000 kc to 200 mc.

CRYSTAL FILTERS
Our many years experience in designing and producing top quality oscillator crystals have enabled us to develop and produce filters of equal desirability. Current production includes filters in the 1.0 mc to 30 mc range, with bandwidths of .01% to 4.0% of center frequency. A number are available without costly design and prototype charges.
Actual Size for Series 3 Types

SELECTIVITY CURVES

Ne w. MICSReOe MtOhDeULE CiRdYSITALS

t.

(GLASS)

AT THE WESCON SHOW

COW PALACE ·SAN FRANCISCO, CAL.

AUGUST 22 thru 25

BOOTH NO. 1402

.28" square x .110" thick frequency range: 7000 kc to 200 mc
Now available in limited quantities

92

CIRCLE 92 ON READER SERVICE CARD

C
Write today for our free illustrated catalogs which include complete listing of military specifications. For specific needs, write, wire or phone us. Our research section is anxious to assist you.
ELECTRONICS CO.
Dept. E-8 MT. HOLLY SPRINGS, PA.
Phone: H unter 6-3411
electronics

NEW RADIO TELEMETRY EQUIPMENT FROM GEL
Receivers, Transmitters, Antennas, Accessories and Complete Systems Designed to IRIG specifications ... Available in all allocated telemetry frequencies including microwave

GEL telemetry receivers, transmitters, antennas and other radio link equipment are available for off-theshelf delivery. GEL equipment represents the latest design featuring low-noise, high-sensitivity, high-sta-
bility, ruggedness and reliability.
In designing the receivers provisions were made for FM phase-lock detection, AM synchronous detection and predetection recording. The GEL receivers have maximum flexibility and versatility through the use of readily-replaceable plug-in tuning heads, IF strips, and band-pass filters. Transmitters are designed for
maximum stability, fidelity, ruggedness and reliability.

Equipment is available qualified to latest environmental and electronic-interference specifications for satellite, missile, aircraft, shipboard and ground-based operation.
GEL's antenna experience and capability extends through all presently-allocated telemetry bands and
through 50,000 mc. Complete in-house antenna capability includes the design and manufacture of radomes, reflectors, feeds, plumbing, pedestals, servo and control units, displays and complete systems.
GEL also designs and manufactures Communications, Electronic Countermeasures, Microwave, Educational and Broadcast equipment.

GENERAL ELECTRONIC LABORATORIES, INC.
8440 Second Avenue, Silver Spring, Maryland, Phone: Area Code 301, JUniper 8-4535, TWX: SSPG154

U ("bli .00. 0-0", te · Aø eita;
1700-MC Special-Purpose Ground Checkout Receiver Type 49A1. One of aseries from 900 MC to 2400 MC.

2200-MC Telemetry Transmitter -- Environmentally Qualified, Type 19A2.

E G L
1-11 KMC Antenna with polarization drive, azimuth and elevation control, Type 113.

30-260 MC General Purpose Receiver, Type 1361.

1500-MC R-F Telemetry Link, Type 45A1.

Write or contact GEL Silver Spring or:

215-260 MC Airborne Telemetry Receiver, Type 11F1.

· General Electronic Laboratories, Inc., 195 Massachusetts Avenue, Cambridge 39, Mass., Area Code 617, UNiversity 4-8500, TWX: CAMB218 · Fred Harris Associates, Suite 411, 11 W. Monument Avenue, Dayton 2, Ohio, Area Code 513, BAldwin 3-3242 · Kemco, Inc., P. 0. Box 998, Irving (Dallas) Texas, Area Code 214, BLackburn 3-6703 · Kemco, Inc., 6427 East Kellog, Wichita, Kansas, Area Code 316, MUrray 4-8224 · Collins & Hyde, Benet Building, 535 Middlefield Road, Palo Alto, California, Area Code 415, DAvenport 6-0647, 0649, TWX: PAL AL 113U · Collins & Hyde, 1250 East Artesia, Long Beach, California, Area Code 213, NEvada 6-0347, GArfield 2-0036

March 9, 1962

CIRCLE 93 ON READER SERVICE CARD

93

NEW!

TVil0 DIGITAL INSTRUMENTS WITH HIGH-QUALITY FEATURES AND LOW-BUDGET PRICE TAGS

1. NLS 484A Digital Voltmeter-Ratiometer With Printer Connection and Built-In Automatic Print Control
$1,460, F.O.B. Destination in U. S. A.

2. NLS 784 Digital Ohmmeter With

Printer Connection and Built-In

Automatic Print Control

$1,460, F.

est;nation in U. S. A.

8069
The blue tag.indicates that the 484A and 784 are NLS "off-theshelf" instruments. See demonstrators in action today or take delivery on your own instruments within 10 to 30 days.

See the new NLS instruments at the IRE show.

94

CIRCLE 94 ON READER SERVICE CARD

Both the 484A and 784 feature plug-in stepping switches.
These new NLS instruments eliminate the need to sacrifice versatility, accuracy, reliability or servicing ease in purchasing a digital voltmeter or ohmmeter in the $1000-1600 price range. · Consider versatility, for example. Some low-priced DVMs don't measure DC voltage ratio, don't have automatic range and polarity changing, and don't provide output and automatic control for printers. The completely automatic 484A does. With it, you can measure both DC voltage and DC voltage ratio with ±0.01% accuracy .... make measurements faster and easier than with any meter having manual ranging -- without the danger of over-loads ... plug in a printer for data logging ... plug in accessories to measure AC or low-level DC or for go/no-go testing. With a784 digital ohmmeter and a printer, you can measure and record resistance automatically and accurately from 0.1 ohm to 10 megs. · Or consider the factors that contribute to the basic reliability of the 484A and 784: simple, time-proven design (thousands of earlier models of the same basic design are in use today) ... quality construction ... and use of quality components such as heavy-duty plug-in stepping switches and aprecision oven for the Zener reference. · Then consider servicing. When it's eventually required, servicing can often be handled right on the spot with electronic parts available in most stockrooms. Plug-in stepping switches can be replaced in minutes and 1000-hour-fife readout bulbs even faster without use of tools or soldering or opening the instrument. Contact NLS for complete data, a demonstration, or engineering aid for special applications. BRIEF SPECS: 484A--ranges: DC voltage ±9.999/99.99/999.9, DC voltage ratio ±99.99%... accuracy: ±0.01% of f. s. on each range... measuring time: 1sec. average ...automatic range and polarity changing ... input impedance: 10 megs for volts, 1000 megs for ratio ... AC or low-level DC with accessories ... automatic control for data logging. 784 -- ranges: 9999./999.9/99.99/9.999/.9999 kilohms ..accuracy -±-0.05% of reading ±--1 digit (±0.1% of reading above 5 megs) ...automatic range changing ...measuring time: Isec.
paverage ...automatic control for data logging. Originator of the Digital Voltmeter non-linear systems, inc. DEL MAR, CALIFORNIA
electronics

FULL 5-DI VP-RATIO-OHMMETER THAT STANDS ALONE IN ACCURACY,
RELIABILITY AND VERSATILITY
NLS M25 Measures DC Volts, Ratio and Ohms With Full 5-Digit Resolution...With Twice the Speed of Stepping Switch DVMs...With Advanced Circuitry Proved "Under the Gun" for 3 Years.

i1125 meets needs of advanced R & D, missile checkout, etc.
Here is an instrument so versatile, accurate and reliable that it is virtually acomplete testing center in itself. With the M25, you can measure DC volts to 5 digits ... turn a knob and measure DC ratio to 5digits ... give the knob another twist and measure resistance to 5 digits... plug in a printer for automatic data logging ... program any or all operations remotely .... or measure AC or low-level DC by adding plug-in accessories. Here is an instrument that does not limit your measuring capability. Accuracy: the M25 provides all the benefits of full 5-digit resolution of 0.001% and an accuracy of -±0.01% of reading ±1 digit over the entire range. A unique input circuit gives exceptionally high impedance when off-null. If AC pickup affects DC voltage or ratio measurements, simply turn the input filter on -- locally or remotely. Reliability: its transistorized circuitry is an advanced version of circuits in 4-digit l's,124s selected during the last 3 years by missile manufacturers after competitive life testing. Its mercury-wetted contact relays have alife expectancy of 171 years in continuous use. You'll find no fan in the M25 -- it dissipates only 65 watts, half that of its highly-reliable 4-digit cousin. Speed: it's twice as fast as the fastest stepping switch DVM and compatible with data recorders. Servicing: uncrowded packaging and 99% plug-in construction reduce servicing, when required, to board replacement. Its many-sided, long-term usefulness makes the M25 atrue value at $5,985 -- less than some single-purpose meters. Contact NLS for a demonstration, complete data, or engineering aid for special applications.
BRIEF SPECS: DC volts: ±0.0001 to 999.99 ...DC ratio: ±.00001 to 99.999 ...resistance: .12 to 999.99 lat ...input impedance: 10 megs on volts, 1000 megs on low ratio ...measuring speed: 1.1 sec.... price: $5,985 F.O.B. destination in U.S.A.
leThe blue tag indicates this is an "off-the-shelf" instrument. See
a demo today. or take delivery on your own within 30 days.
Originator of the Digital Voltmeter
non-linear systems, inc.
DEL MAR, CALIFORNIA
March 9, 1962

V

+1 9°2587

·Ht.I

MODEL M25 DIGITAL VIII.T.OMIIMETEA

e

The A125 features 99% plug-in construction. .

CIRCLE 95 ON READER SERVICE CARD

95

Visit our "Cost-Savings Center" at the New York IRE Show, March 26-29. Booths 2615-17
Pocket 70% savings on MYCALEX6Commutator Plates

In line with Mycalex policy, here's the latest cost-saving we're passing on to customers: up to 70% on virtually every commutator in the line. It's all made possible by the MYCALEX METHOD, the molding and finishing process we recently perfected. Thanks to it, plates and dielectric parts of many types and shapes perform at their best, yet average only afraction of their former cost. Each part offers the performance advantages Mycalex materials are noted for. In fact, price is the only
thing that has changed! Check the 12 popular plate-types of SUPRANIICA© 555 ceramoplastic shown
here. All 21 types in the line deliver thermal endurance up to 650°F., over-1000megohm insulation resistance and capacitance of only 2-3 micromicrofarads between channels. As many as 450 rectangular contacts with some types, as well.
Important: no tooling or set-up charges on standard plates; minimal charges for custom-designing. Write today for technical information and further details.

Check the sayings these typical Mycalex plates offer you!*

TYPE

WAS

NOW

CP 93 CP 150
CP 151 CP 184
CP 286 CP 416

$218.00 218.00
70.00 262.00
70.00 295.00

$ 66.00 66.00
36.00 81.00
36.00 171.00

'Prices based on orders of 1or 2. Sayings markedly higher with larger orders.

CP 184

CP 459

CP 416

CP 414

CP 424

CP 456

CP 427

CP 151

CP 150

CP 286

AMI

General Offices and Plant: 120 Clifton Boulevard, Clifton, N. J. Executive Offices: 30 Rockefeller Plaza, New York 20, N. Y.

World's largest manufacturer of ceramoplastics, glass-bonded mica and synthetic mica products

96

CIRCLE 96 ON READER SERVICE CARD

MYCALEX
CORPORATION OF AMERICA
electronics

SANBORN 660-400[1

O STEP
· VERNIER -GAIN

""·---

·

NEW 0-10

KC

1MILLISECOND RECOVERY TIME after a 14-volt over oad.
17,o1 base, 1/2 nuildiv; amplitude, 2% offull scale. A small AC signal was mixed with the overload to
increase visibility of recovery trace.

Floating Input-Floating Output

DC AMPLIFIER

Sanborn° FIFO-- fully transistorized, shown actual size
SPECIFICATIONS: MODEL 860-4000 FIFO AMPLIFIER
Isolated floating, guarded input -- 100 meg. impedance min. at DC
Isolated, floating output -- impedance less than 35 ohms Bandwidth DC to 3db down at 10 KC
Max. Gain of 1000 -10 my in gives +10 volts out across 1000 ohms (floating). Optional Model 860-4000P with power output isolated from input can deliver ±5 volts at +100 ma at ground potential
Linearity +0.1% of 10-volt floating output at DC High Common Mode Rejection -160 db at DC, 120 db at 60 cps, 100 db at 400 cps, with 1000 ohms unbalance at source Drift 2uy, Noise 7uv RMS
Specifications subject to change without notice.

The new FIFO (floating input --floating output) is afully transistorized amplifier designed especially for obtaining data from wide bandwidth transducers. A single FIFO used with an input scanner can amplify data from many transducers, or the outputs of any number of FIFO amplifiers may be sampled. Model 860-4000, with gain of 1000, is particularly useful for extracting low level signals from a high noise level. Model 860-4000P (with grounded output isolated from input) can deliver 4.5 volts at ±100 ma and is suitable for driving high frequency galvanometers. Both FIFO models have a high common mode rejection ratio and, as illustrated by the 'scope photo, exceptional overload recovery capability. The FIFO amplifier is available in aportable case with individual power supply. Two channels with individual power supplies are available on a3;1e x 19" panel for rack mounting, or you can mount eight amplifiers in 7" x19" with a Sanborn Model 868-500F 8-channel power supply.

Contact the Sanborn Industrial Sales -Engineering representative nearest you or write the main office in Waltham for complete
information and engineering assistance.

INDUSTRIAL \-.<707

DIVISION

SANBORN ' COMPANY

175 Wyman Street, Waltham 54, Massachusetts

A SUBSIDIARY OF HEWLETT-PACKARD COMPANY

For DC to 100 cps bandwidth
DATA PREAMPLIFIER 880-1500S
lias floating, guarded input and floating output; delivers +5 volts across 2000 ohms; linearity ±0.05% of full scale (5 volts); bandwidth DC to 3db down at 100 cps; rejection ratio 106:1 with 5000-ohm source unbalance at 60 cycles. Either fixed gain between 10 and 2000, or with attenuator to provide any selected gain within this range. Amplifier has less than 2uy drift and less than 3uy peak-topeak noise.

CIRCLE 97 ON READER SERVICE CARD

PARTS SO SMALL, 15,000 OF THEM FIT IN A BOTTLE CAP
MICRO-MINIATURE PRECISION COMPONENTS
Some of these parts are so minute, 15,000 of them can fit into a bottle cap. Yet each is precision-made to meet the most exacting tolerances of semiconductor and electronic manufacturers.
30 YEARS OF EXPERIENCE
These component parts are made by SunAir Dynamics, whose experience extends to 30 years in metalworking for the electronics industry.
Now, our newly expanded facilities greatly accelerate manufacture. Precision micro- miniature components can be supplied in high volume to meet tight production schedules.
Base tabs, clips, tubes, leads, spring leads, caps, eyelets and headed and tabulated wire forms are available in millions. Skilled SunAir technicians solve your most demanding component requirements. A perpetual inventory of many alloys and precious metals, in ribbon and wire, expedites rapid processing of your needs. A trial order will prove our Quality--Efficiency--Economy.
SUNAIR DYNAMICS

4415 EAST 10th LANE HIALEAH, FLORIDA
Subsidiary of
SUNAIR ELECTRONICS, INC.

98

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electronics

DELCOS NEW In less time than it takes light to cross this room,

a new product,

high speed

MC

silicon modules, could: (1) correct the course of a missile in flight;

(2) make it possible for sonar pickups to track and compute the

position of targets with microsecond accuracy; and (3) handle any

number of other airborne guidance and control functions that previous

modules--due to low speed or environmental or performance limitations

--could not handle. Delco Radio's 10mc modules, with a maximum

gate-switch speed of 40 nanoseconds, convert data 100 times faster

SILICON --even under the most extreme environmental conditions.

These

modules come epoxy encapsulated, and

operate over a temperature range of --55°C to +100°C. And these

DIGITAL same reliable

circuits are available packaged on

MODULES plug-in circuit cards. These Delco

are environmen-

tally proved to: SHOCK, 1,000G's in all planes. VIBRATION, 15G's at 10 to

2,000 cps. HUMIDITY, 95% at max. temp. STORAGE AND STERILIZATION TEMP.

--65°C to +125°C. ACCELERATION, 20G's. Designed for systems

using from one module to 100,000, and the module's rated

performance considers the problems of interconnection. Data sheets

are available. Just write or call our Military Sales Department.

Physicists and electronics engineers: Join Delco Radio's search for new and better products through Solid State Physics.

PIONEERING ELECTRONIC PRODUCTS THROUGH SOLID STATE PHYSICS Division cl Genera/ Motors · Kokomo, Indiana

D ELCO RA .EbDAi 6

Ma rch 9, 1962

CIRCLE 99 ON READER SERVICE CARD

99

TYPIT

FOR cc RB Le 'R <

n÷

r·

2%

oem. 3

emir §-à-....eeT,NEJé

· Over 450 special characters available · TYPIT fits any standard typewriter · Insert symbols as you type · 4 seconds per symbol

Call your local TYPIT dealer for a demonstration and a current catalog. See Science 19 fan. 1962 for the TYPIT dealer near you, or write to us.
TYPIT a product of.
mechanical enterprises, inc.
3127 Colvin Street, Alexandria 3, Virginia
CIRCLE 228 ON READER SERVICE CARD

irtesa'd moe r ya!lbl4

30,joule pulsed ruby laser system ready for research in ll0111' labor«tory
Newest addition to a line of laser systems manufactured by Trion Instruments, Inc., the LS-4 is 220-volt operated and has the highest energy output of any commercially available system. Its flexible design makes it ideal for research into high-power density effects and radiation studies. Trion Instruments, Inc. also manufactures laser components and accessories. Write today for details of the LS-4 and the popular LS-2 ... systems that perform beyond their specifications!
TRION INSTRUMENTS, INC.
1200 N. Main Street In Ann Arbor, Michigan "Research Center ol the Midwest'

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CIRCLE 100 ON READER SERVICE CARD

electronics magazine covers engineering and technically interpreted market trends every week. Government, military and economic developments, new applications, and technical data you'll want to file and keep. Subscribe now and read it first (don't be low man on a routing slip). Mail the reader service card (postpaid) to electronics, the magazine that helps you to know and to grow! Rates: three years for $12; one year for $6; Canadian, one year for $10; foreign, one year for $20. Annual electronics BUYERS' GUIDE (single issue price $3.00) included with every subscription.
subscribe today to
electronics
electronics

CO I.LINS MIXERS ..· for selectivity from 10kc to 65mc

When your circuit demands steep-skirted selectivity in the 60-600kc range, specify
LJ
Only Collins mechanical filters provide steep-skirted selectivity approaching the theoretically-perfect. This selectivity comes from aseries of resonating dime-size nickel-alloy discs with Qs of 8,000 to 12,000 ... up to 150 times more than conventional filter elements. Collins mechanical ,filters are packaged in cases as small as % cubic inch. They're electrically and mechanically stable ,and don't age, break down, or drift as aresult of extreme temperature or long, continuous service. Frequency shift, for example, can be held between 1.5 and 2ppm/°C over a-25°C to --85°C range.

Widest frequency range ... 10kc to 50mc ... and smallest size... down to less than 1 cubic inch ... Colliii :.,L )stal Filters

---3 p%agritrdof the''s^t'orLyC..t.ililte'rs:,catphaebiclaittyalaongdisspoeneldy that count most.

You're closer to finding the right crystal filter for your circuit when you contact Collins because the 10kc to 50mc range will take care of almost any imaginable application. Choosing Collins for crystal filters will also help with your high-density packaging problems. For example, there sa series of filters from 4-20mc in cases well under 1 cubic inch, a 2 to 1 size reduction from what you'd normally expect.

You may find exactly what your circuit needs among the hundreds of proven LC filter
designs for low pass, high pass, band pass, telegraph tone, aircraft navigation and other applications already on file. But if you don't, we have the capability to design, produce and deliver what you do need.

Through the sub-audio to 65

flic range, we consistently push

the state-of -the-art for our

customers by delivering filters

which meet conditions previ-

ously considered impractical or

impossible. In temperature sta-

bility, in resistance to humidity,
in size, in method of packaging,

we are filling new and special

requirements every day.

What's more, you get reliabil-

ity and performance in the same

package with the hardware.

Your own inspection and test

procedures will prove that

Collins filters are the result of

a quality assurance program

that never lets up.

"Mr

You can select center frequencies from 60 to 600 kc with awide choice of bandwidths and case styles. All filters display shape factors (ratio of 60db bandwidth to 6db bandwidth) of 2 to 1 or less and have minimum ripple and low transmission loss. And filters with new ferrite tra nsducers show flatter passband response. even lower transmission loss and greater physical strength for missile and other demanding application.
More than 100 standard types of mechanical filters are already catalogued, and the only mechanical filter design group in the country is ready to help you with special filtering requirements.

,AL Engineering help at the circuit design stage and rapid development of special prototype filters are other reasons why so many project and design engineers are checking with Collins for crystal filter requirements. In addition. Collins offers the consultation of its design engineers, if required, as well as special application data sheets to help you detail specifications so that we can submit adesign and price proposal. If your circuit requirements can be met by one of the many crystal filters whose designs have already been standardized, you can expect deliveries from stock -- 90.day deliveries on production quJntities.
Besides meeting your specs for renter frequency, bandwidth, impedance and size, Collins mahes certain your filters will perform under severe operating conditions. As an illustration. Collins filters in the I-30int range show a frequency shift of less thon .005% from -55`C to -- 90'C. Below Imc, filters have a frequency shift of less than .01% from --40'C to -.-80`C.

For more information about our capabilities and products, call or write today; ask for Data File ::1a'l0i1.forCroilal.inEsnRgaidneieorCinogmpraenprye,seCnotamtpiovnesenitn sprDiinvciispiaoln.cit1i9es7.00 San Joaquin Road, Newport Beach, VISIT OUR BOOTH NO. 2122-2124 AT THE NEW YORK IRE SHOW.

\korch 9, 1962

CIRCLE 101 ON READER SERVICE CARD

101

A RARE

Stanford University, in Palo Alto, California, is now forming the nucleus of the engineering team building the world's largest electron accelerator. This two-mile linear microwave device will enable physicists to explore deeper into the atom than ever before.

OPPORTUNITY

Those engineers and scientists selected to participate in this challenging project will share in the pleasures of .... the cultural environment of the beautiful San Francisco

Peninsula ... the opportunity to work in an exciting

intellectual atmosphere ... four weeks paid vacation

... an excellent retirement plan. Electronic engineers with several years' experience are needed for senior positions in the research and development

of such disciplines as :

· microwave systems and components

· pulse circuits and pulse modulators

· ultra high power klystron tubes

· data handling equipment for accelerator central control systems

AT THE IRE CONVENTION IN NEW YORK You will be able to discuss these unusual opportunities with the project's engineering management in Stanford's suite at the headquarters hotel. Call PLaza 3-1790 starting March 24 to arrange for an appointment. Or if you prefer, write now to: Engineering Placement Manager, Stanford Linear Accelerator Center, Stanford University, Stanford, California. An equal opportunity employer.

STANFORD LINEAR ACCELERATOR CENTER

102

electronics

For certain applications, encapsulated transformers have distinct advantages over conventional designs. Physical design need not be limited to enclosing cases, thus engineering innovations can often be incorporated to improve performance, weight and size. Knowing how to take advantage of these factors, plus many years of experience in creating and producing hundreds of encapsulated transformers, is the service we offer to any new or present customer.

for the first time
10 millivolts to 1000 volts
at all frequencies from
35 cycles to 20 KC
MODEL 323 Internal Oscillator: Provides 5 freq. Variable over a range of 10% from each fixed frequency 50, 60, 400, 1KC, 10KC Short Term Stability: .01% Long Term Stability: .03°0 month Absolute Calibrated Decade Controls
See it on display for the first time at the 1962 IRE SHOW Burlingame Assoc. Booths 3814-3816

ACME ELECTRIC CORPORATION
3 1 3 WATER STREET · CUBA. NEW YORK
In Canada: Acme Electric Corp. Ltd., 50 Northline Rd., Toronto, Ont.
·

March 9, 1962

CIRCLE 230 ON READER SERVICE CARD

INSTRUMENT LABORATORIES · OCONTO, WISCONSIN

CIRCLE 103 ON READER SERVICE CARD

103

COMPONENTS AND MATERIALS
Component Design at the IRE

e,t4Nive le,,e
o ·
ire;° · et,
SPECIAL

AT THE TECHNICAL SESSION on Semiconductor Devices (see chart) components men will be briefed on techniques developed for fabricating precision-etched transistors having vapor grown base layers.' Devices obtained by this technique may be
expected to exhibit gain bandwidth products up to 5kMc cycles and beyond. At the same session, the basic theory of a unij unction transistor
which uses a new geometry to achieve an order of magnitude improvement in some of the important electrical parameters will be described.' New circuits will be summarized together with performance
data. Other papers to be given at the Semiconductor Devices session will be: the frequency of merit for three terminal electron devices";
new techniques developed for using microwave transmission and reflec-
tion to determine the physical constants of crystals'; and a paper on transistors that can effect improvements in ferrite core and thin film memories.' The fabrication process
relies on the use of SiO or SDI films as a diffusion mask for n-type
impurities. These transistors switch

a current through a 20-ohm resistive load in less than 10 nsec.
At the session on Digital Computer Components, six papers will be given, including one paper on the design of magnetic heads for high information storage in noncontact recording." Other talks will be given on microwave computing techniques, logic building blocks for the NCR-315 Data processing system, generalized magnetic pulse recording, and a novel multiple coupling array.
Antenna Arrays
The sessions on Antennas (8 and 23) will cover ten papers on advanced antenna design: pattern characteristics of an antenna focused in the Fresnel region; polarization tracking of antennas; log periodic circuit analysis; scanning characteristics of two-reflector antenna systems; annular slot monopulse antennas; the design and development of anew communications system for long distance communications in the hf band (ISCAN) ; superdirective antenna arrays for improved vif reception; the cou-

SOME IRE SESSIONS OF INTEREST TO DEVICE DESIGNERS

Subject

IRE Session

Date

Where Held

Semiconductor Device Digital Computer Components Antennas (I)

Mar 26, pm

a

4

Mar 26, pm

8

Mar 26, pm

Broadening Device Horizons Microwave Devices Antennas (II)

9

Mar 27, am

a

17

Mar 27, pm

a

23

Mar 27, pm

Microwave Components Electron Devices

25

Mar 28, am

a

28

Mar 28, am

Space Age Components

4.2

Mar 29, am

d

Lumped and Distributed Microcircuit Corn-

ponents

50

Mar 29, pm

d

a--Waldorf Astoria, Starlight Roof; b--Waldorf Astoria, Sert Room; c--N. Y. Coliseum, Morse Hall; d--Waldorf Astoria, Jade Room am sessions begin at 10 am; pm sessions begin at 2:30 pm

piing and mutual impedance between conical logarithmic spiral antennas in simple arrays; on random removal of radiators from large
linear arrays; and a spacing weighted antenna array.
Electronic Frontiers
The panel on Broadening Device Horizons (session 9) will talk on significant new developments in the field of electron devices which will soon increase the scope of electronics. Frontier areas discussed this year include generators, modulators and detectors of coherent optical radiation; semiconductor devices in the microwave region; and integrated electron devices.'' 8.°
Microwave devices (session 17) include a wideband microwave deflection amplifier tube which bridges the gap between conventional lowfrequ en cy amplifier tubes and broad-band microwave traveling wave tubes"; adevice for extending klystron-interaction power generation capacity by a factor of ten or more"; a BWO for local oscillator service at X-band, competitive in size and weight with a reflex klystron oscillator"; the use of thermoelectric elements as microwave power detectors"; and a broadband uhf parametric amplifier having 17.5 db flat gain, and noise figure under 1.7 db from 406 Mc to 450 Mc."
Microwave components (session 25) will feature talks on a miniature superconducting delay line consisting of a i-sec coaxial line with a0.010-in. diam niobium center conductor, solid Teflon dielectric, and a 0.036-in. ID lead-tin alloy outer conductor; a wide band microwave compressive receiver; a compact uhf high power ferrite isolator; analysis of resonant cavities in parametric amplifiers and frequency multipliers; and a multiple harmonic local oscillator source.
Electron devices (session 28) cover talks on synthetic ruby for maser applications; microwave modulation of light; a working practical solid-state three-dimen-

104

electronics

March 9, 1962

EVEN AT HIGH TEMPERATURES, MYLAR
HELPS MOTORS RUN TROUBLE-FREE LONGER!

Mylar * polyester film resists the three main causes of motor failure--heat, humidity and physical stress. Temperatures in the Class Brange have relatively little effect on the electrical characteristics of "Mylar". It's also 35 times more moisture-repellent than rag paper .... 8 times stronger .... and can't dry out because it contains no plasticizer. "Mylar" also helps reduce size and weight of motors, and gives them an extra safety margin from shock because it repels moisture so well.
Capacitors benefit from "Mylar", too. Last longer, are more reliable ...at no greater cost than paper units for similar service. In awide variety of applications, "Mylar" can improve performance, lowe'r costs. Here are some more reasons: · dielectric strength of 4,000 v/mil." ·thermal stability from --60°C. to over 150°C. ·resistance to chemicals, aging, abrasion and tearing. Best of all, you can use less, often pay less ...because you get all these advantages in thinnergauges. Evaluate "Mylar" for your product. Write for free booklet(SC) detailing properties and applications. Du Pont Co., Film Dept., Wilmington 98, Delaware.

PNq
BETTER Tr,NG FOR BEi ÍR ii iINCF THROUGH CHEMISTRY

DU PONT
MYLAR° POLYESTER FILM
',Registered Du Pont Trademark. -, ASTM D-149.

SEE THE NEWEST ON "MYLAR" AT BOOTH 4333-4335 AT I.R.E.
CIRCLE 105 ON READER SERVICE CARD

105

3 Chemical Division COMPANY

EXTRA-LENGTH EXTRUSIONS (and 6other reasons) rate Kg: FLA:81 high for pipe lining, "spaghetti" tubing!

Now--continuous, uniform extrusion of KEL-F 81 Brand Plastic provides practically unlimited lengths of corrosion-conquering pipe linings with diameters as big as 8", as well as dielectrically strong wire jacketing in diameter sizes as small
as 1/16". New KEL-F 81 Plastic, with its highly uniform,
heavy molecular structure, is melt-processable, extrudes flawlessly without scoring. Lengths are limited only by shipping and handling equipment capacity. With pipe linings, for example, extra length minimizes flange joints, cuts installation
and maintenance costs. In addition, linings of KEL-F 81 Plastic extruded by one fabricator, Carmer Industries, Inc., can be formed on the ends to provide their own flange gaskets (see column at right). Lining walls can be made as thin as .007", as exact as ±.5 mil.

6 MORE KEL-F 81 PLASTIC TALENTS! 1)Non-por-
osity: why KEL-F 81 Plastic won specification as
the lining for a4" pipe in the Titan Imissile, in preference to a competitive plastic material! 2) Chemical inertness: KEL-F 81 Plastic resists most corrosive media, withstands organic solvents, strong caustics, concentrated acids, oils and
greases, even missile fuels! 3) Zero moisture absorption: even with constant contact with corrosive fluids! 4) 800-degree range: has useful temperature range from --400 to +400°F! 5) Mechanical toughness: combines high tensile, flexural and compressive strengths, outstanding abrasion resistance! 6) High dielectric strength: excellent
arc resistance, at both high and low frequencies! Look to the column at right for additional information on extruded KEL-F 81 Plastic and for the list of authorized processors.
..KEL.F.'IS A AM TM OF 314 CO.

311 MINNESOTA MINING E MANUFACTURING CO.

1

106

CIRCLE 106 ON READER SERVICE CARD

electronics

KEL-F 81 Plastic
...in typical applications
SELF-GASKET1NG LINERS! Unique end-forming process, developed exclusively by Carmer Industries, Inc., not only reduces chance of leakage, it eliminates the need for any additional gasketing at flanged pipe connections!
RODS AND TUBING, as small as 1,16" in diameter, are useful in a variety of chemical processing and aerospace applications. And because KEL-F Plastic affords high dielectric strength and arc resistance, it is widely used for wire jacketing, protective sleeving, other electrical and electronic uses.
FOR MORE DATA about KEL-F 81 Plastic for applications requiring long extrusions, contact the 3M Chemical Division Branch Office in Chicago, Cleveland, Los Angeles or Ridgefield, N. J.
AUTHORIZED PROCESSORS FOR KEL·F 81 PL ASTIC Adam Spence Corp., 963 Frelinghuysen, Newark, N. J. Allied Nucleonics Corp., 2421 Bloating Ave., Alameda, Calif. Auburn Plastics, Inc., 511-5th Ave., New York. Bonny Manufacturing Corp.. 146 Main St., Maynard, Mass. Booker &Wallestad, Dir. of Thermotech Industries, Inc., 3336 Gorham Ave., Minneapolis 26. Carmer Industries Inc., 122 N. 26th St., Kenilworth, N. J. The Fluorocarbon Company, 1754 Clementine, Anaheim, Calif. Fluorulon Laboratories, Inc., Box 305, Caldwell. N. J. Garlock, 1n.. Plastic ON., U.S. Gasktt Co., Inc., 608 N. 10th St., Camden 1, N.J. G-W Plastic Engineers, Inc., Bethel, Vt. Cries Reproducer Corp., 125 Beechwood Ave., New Rochelle, N. Y. Modern Industrial Plastics, Die. of Minion Company, Inc., 3337 N. Dixie Dr., Dayton 14, 0. Mogness Products, Inc., 1914 Indiana Ave., Racine, Wis. Penn·Plastics Corp., 100 Fairhill Ave., Glenside, Pa. Plastic Molded Parts, Inc., 1350 Fifth Ave., East McKeesport, Pa. Pii-O-Seal Mfg. Co., Sub. of Zero Mfg. Co., 1010 Chestnut St., Burbank, Calif. Raybestos Manhattan, Inc., Pacilic Div., 1400 Orangethorpe, Fullerton, Calif. L. W. Reinhold Plastics, Inc., 8763 Crocker St., Los Angeles. Saunders Engineering Corporation, 3012 Spring St., Redwood City, Calif. W. S. Shamban Co., 11617 W. Jefferson Blvd., Culver City, Calif. Timely Technical Products, Inc., Industrial Plastic Engineering Div., Verona, N. J.
For general technical information about KEL-F Plastic, write Chemical Division, Dept. KAX-32, 3M Company, St. Paul 1, Minn.
3COMPANY
CIRCLE 107 ON READER SERVICE CARD

sional display which eliminates the major disadvantages of other 3-D displays; an image tube (Ebicon) that features low power consumption and can be operated in a compact, light-weight vidicon type camera; and a paper on new developments in ultra fast warm-up planar tubes.
Space age components discussed in session 42 are: abrushless potentiometer that uses Hall effect crystals"; a brushless d-e motor with solid-state commutation"; amethod of specifying precision potentiometers in terms of system requirements"; and two papers that evaluate resistors with respect to nuclear radiation and space environments.'
Lumped and distributed microcircuit components (session 50) presented cover film-type distributed-parameter circuits; atheoretical comparison of doubly loaded distributed bridge T and Lumped twin T RC notch filters; properties of porcelain enamels and ceramic coatings; properties of thin film and silicon solid-state components and their effect on microcircuit performance; and the use of titanium and titanium oxides in thin film integrated components.
REFERENCES
(1) R. L. Luce, J. D. McCotter, J. A. Sluss and C. G. Thornton, High Frequency Microlayer Transistor, Philco Corp., Lansdale, Pa.
(2) V. A. Bluhm, T. P. Sylvan, A New Uni.junction Transistor Structure Using Spreading Resistance Modulation, Semiconductor Products Dept., GE Co., Syracuse, N. Y.
(3) S. Venkateswaran, Frequency of Merit for Three-Terminal Electron Devices, University College of Swansea, Singleton Park, Swansea, Wales.
(4) H. Jacobs, F. A. Brand, J. D. Meindl and R. Benjamin, New Microwave Techniques in the Measurement of Semiconductor Phenomena, U. S. Army Sig. Res and Dey, Lab., Fort Monmouth. N. J., and Monmouth College, West Long Branch, N. J.
(5) R. M. Folsom, W. A. Pieczonka, P. P. Castrucci and M. M. Roy. A HighSpeed Medium Power, All-Diffused Germanium npn Mesa Transistor, IBM Corp., Poughkeepsie, N. Y.
(6) L. F. Shew, High-Density Magnetic Head, Product Dey. Lab., IBM Corp., San Jose, Calif.
(7) I. A. Lesk, Integrated Electron Devices, Motorola, Inc., Phoenix, Arizona.
(8 ) G. Birnbaum, Optical Masers, Hughes Aircraft Co., Malibu, Calif.
(9) J. M. Early, Speed in Semiconductor Devices, Bell Telephone Labs., Murray Hill, N. J.
(10) H. .1. Wolkstein and R. W. MeMurrough, A Wideband Microwave Deflection Amplified Tube, Electron Tube Div., RCA, Harrison, N. .T.
(1 1) M. R. Boyd, R. A. Dehn, J. S. Hickey, A Multiple-Beam Klystron, Superpower Microwave Tube Lab., Power Tube Dept., GE Co., Schenectady, N. Y.
(12) K. R. Evans, A Light-Weight, Compact, Backward Wave Oscillator for X-Band, Microwave Associates, Inc., Burling-Lon, Mass.
(13) S. Hopfer, N. H. Riederman, L. Wadler, The Properties of Thermoelectric Elements as Microwave Power Detectors, PRD Electronics, Inc., Brooklyn, N. Y.
(14) R. LaRosa, A Broadband Uhf

Parametric Amplifier, Hazeltine Res.

Corp., Littleneck, N. Y.

(15) T. W. Parsons and D. R. Simon,

Solid-State Linear and Sinusoidal Syn.

cfobrrtos,DivP.r,ecGi.sPi.oI.n,

Components Clifton, N.

Div., J.

Kear-

(16) G. H. G. Bauerlein, A Brushless

D-c' Motor. Precision Components Div.,

Kearfott Div., G. P. L, Clifton, N. J.

(17) D. C. floss, Precision Potentiom-

eter Specification, Spectrol Electronics

Corp., San Gabriel, Calif.

(18) I. Doshay, Space Radiation Resis-

tor Evaluation, Aerojet-General Corp.,

Azusa, Calif.

(19) L. Wurzel and S. O. Dorst, The

Effect of Radiation Environment on Film

Resistors, Resistor Div., Sprague Electric

Co., Nashua, N. H.

Windowless Multiplier Tube
Designed for Space Systems
GLASS ENVELOPE is not required on a new multiplier phototube developed by IT&T's Industrial Laboratories Div., Fort Wayne, Ind. Because the device will be used in outer space, there is no need for the usual glass envelope, and its elimination permits a wider range of sensitivity. The vacuum under which the tube will operate is higher than usually obtained.
Beryllium-Copper Cath od e
Key to the development was the use of acathode material that would not be poisoned by exposure to the atmosphere prior to use. The material used is beryllium copper, an alloy that will withstand exposure to the atmosphere for a reasonable time without becoming oxidized.
The FW-141 is a sixteen stage windowless electron multiplier designed to withstand repeated exposure to the atmosphere without serious loss of gain. Because there is some loss, however, IT&T ships the units in a vacuum enclosure. Thus, their exposure to the atmosphere is held to a minimum. A va mum sealed voltage divider network fur supplying the necessary intermc,diate operating potentials is incorporated in the unit.
Current gain of the FW-141 is 100,000 for the last 15 stages. Current gain of stage 1 depends upon the energy and type of input radiation. Sensitivity of this unit is not as high as that of conventional multiplier phototubes. Maximum applied voltage is 3,500 and is set by ion feedback and is dependent on pressure. IT&T recommends the overall operating potential be -4justable over the range of 1,7002,300 volts to achieve the specified current gain.
107

ANOTHER FINE PRODUCT OF FAIRCHILD RESEARCH

r__ ...,_ unul MHO C

_

_

.._.,,, f.--,,, =

_3

It:-- UJf. 171

Fairchild, the leader in
precision potentiometers, takes another giant stride

in technological progress with infinite-resolution, conduct've plastic potentiometers having Fairchild

reliability "built-in" · Fairchild potentiometers utilize acontinuous track of specially prepared, conductive,

high impact plastic co-molded with an insulating base of the same heat-resistant material to provide superior performance under temperature and humidity extremes · Temperature cycling tests of this advanced Fair-

child design shows that resistance values are consistently reproduced · Resistance stability is maintained by

Fairchild's unexcelled production skills which assure sufficient conductor bulk to virtually eliminate effects

of wear · Low end-loss positive.connections are achieved through co-molding of silver terminations with the conductive track. In addition, track geometry can be varied to obtain optimum functional conformity

· Reliable operating life of many millions of cycles is assured through the resistance stability of Fairchild's

conductive plastic potentiometers. For more information, write Dept. 53E.

FEATURES:INFINITE RESOLUTION/UNSURPASSED RELIABILITY/RESISTANCE STABILITY/CONSTANT RESISTANCE VALUES/LOW END-LOSS/LONG LIFE/COMPLETE RANGE OF SIZES

ELECTRICAL

Resistance Range, ohms Ind. Linearity Resolution

2K -- 50K -± 10%
0.5% standard
Virtually infinite (less than .005°)

Temperature Coefficient Power Rating

Negative 3-400 ppm 2 watts at 20°C

Temperature Range Humidity Vibration Life

ENVIRONMENTAL
--65°C to + 150°C
95% to 100% RH at 71°C 10 G's to 2000 cps
Over 10 million cycles at 600 rpm

FAIRCHILD NEW PRODUCTS AT IRE BOOTH 2701 & 2703

PIRCIIILD
CONTROLS CORPORATION

GYROS PRESSURE TRANSDUCERS POTENTIOMETERS ACCELEROMETERS

A Subeichary of F·IrchIld C·rn·ra and Inetrurn·nt Corpe ,at ,on

225 Park Ave., Hicksville, L. I., N. Y. 6111 E. Washington Blvd., Los Angeles, Cal.

108

CIRCLE 108 ON READER SERVICE CARD

electronics

a tight turn at 70,000 feet?

... an easy ground maneuver with new AMP HA/HV Connectors!

Now ... new designs in AMP High Altitude/High Voltage connectors make possible sharp, space-saving turns, cut down conductor snarl and waste, and allow an extra
edge where fractions of an inch and mere ounces make a big difference. The AMP CAPITRON DIVISION ... pioneer in high-voltage, high-altitude terminals and mating lead assemblies offers these new additions to its lightweight, miniaturized line in L, T and Y shapes. The "L" design gives you a built-in corner turner ... the "T" and "Y" accommodate two circuits off the one lead--a two-in-one advantage that comes in handy when you're designing or working in cramped quarters. All of them are made to the same exacting specifications and offer the same industry tested and accepted features found in the standard AMP HA/HV line. So, before you next specify HA/HV connectors, consider these features:

Visit Lo.-.at the I.R.E. SHOW Booths 2527-31 March 26-29

e each shape is available as a connector for 2 to 3 lead assemblies, a bulkhead mounted connector or for use in encapsulated (molded) units e all parts mate with standard HA/HV-1 lead assemblies high mechanical and dielectric strength e quick disconnect and assembly with positive mating of high voltage cables . no

exposed high voltage parts . fungus proof--highly resistant to moisture, oil and

chemicals . rated at 12,000 volts-5 amperes--sea level to 70,000 feet--from

--55°C to +140°C. Get the HA/HV story complete. Write today for additional information.

MP CAPITRON DIVISION

March 9, 1962

INCORPORATED 155 Park Street
Elizabethtown, Pa.

CIRCLE 109 ON READER SERVICE CARD

109

"cradle of industrial research"

TRANSISTOR AND DIODE
TEST FIXTURES BY DELTA DESIGN
CONVENIENT! RELIABLE!
Just open drawer and quickly insert dozens of diodes or transistors for temperature evaluation from --100 F. to +400 F. Fast decade switching!
Cut Testing Costs!
These Delta fixtures radically reduce testing costs; accuracy assured. Fit all Delta Portable Temperature Chambers without modification.

Call your Delta representative or write direct.
8000 FLETCHER PKWY. LA MESA, CALIFORNIA
PHONE: 465-4141 (SAN DIEGO) · TWX: LMSA 6538-U CIRCLE 231 ON READER SERVICE CARD

Many of the scientific developments that will shape tomorrow's world are germinating right now in New Jersey's more than 500 industrial research institutions. The smaller manufacturer who does not have his own research staff can easily find topnotch facilities and personnel available close by to help work out his problems.
Because of its great contributions in such fields as electricity, electronics, chemistry, metallurgy and aviation, New Jersey has been called "the cradle of industrial research". Your executive and technical people will find astimulating environment here, and ample opportunity for advanced study.
Write for industrial information.
NEW JERSEY
Bureau of Commerce, Section 951- U Department of Conservation and Economic Development
520 East State Street, Trenton 25, New Jersey
in the geographic center of the world's richest market

110

CIRCLE 110 ON READER SERVICE CARD

ELECTRONIC COMPONENTS

The SMK components are exported in a )t

large quantities to foreign markets at the

lowest possible prices with the highest

qWuealiatrye aavlawialyabslem.aking strenuous efforts S-G 1101

S- H1101

to make a new design and improve every

Miniature Plugs

product in quality. We are proud of our production capacity

and Jacks

which is claimed to be the largest in the

Orient. Catalogue available on request.

S-J 2801 Rotary Switch

S-I 5201 S-I 5202
U.S. Connector

S-I 5701 S-I 5702 Plug Socket
S-I 7901 Connector for microphone

S-X2201 Battery Holders

TV Adapter

S-Q 2501
Pin Jack Terminals for amplifier

SHOWA MUSEN KOGYO CO., LTD.
74 Higashitogoshi 5-chome, Shinogawa-ku, Tokyo, Japan

CIRCLE 232 ON READER SERVICE CARD electronics

4e,
THIN FILMS
OF ANY
MATERIAL

NRC Model 3166 Coater with Electron Beam Gun
by electron beam -- vacuum evaporation For vacuum evaporation
of any material -- refractory metals (tungsten, tantalum, molybdenum) and even ceramics, a new energy source is available -- the NRC Vacuum Evaporation Electron Gun. This Electron Gun accelerates and focuses high velocity electrons into aconcentrated beam as small as 1/64" diameter and energy densities of several BILLION watts per square inch. At these high energy levels, no wonder virtually any material will evaporate. NRC offers the electron gun designed specially for adaptation to NRC Models 3164 and 3166 bell jar Vacuum Coaters. Available with the gun is achoice of power supplies (3, 5and 6KW) and controls. For equipment to vacuum evaporate almost any known material, write or contact any NRC sales office for information on NRC Vacuum Coaters and Electron Beam-Vacuum Evaporation equipment.
SEE a DEMONSTRATION at the IRE SHOW. NRC BOOTH Nos. 4425 - 4427.

NRC

A Subsidiary of National Research Corp.

EQUIPMENT CORPORATION

160 Charlemont Street, Dept. 4C Newton 61, Massachusetts DEcatur 2-5800

MANUFACTURING PLANTS IN NEWTON, MASSACHUSETTS

AND

PALO

ALTO,

CALIFORNIA

March 9, 1962

CIRCLE 111 ON READER SERVICE CARD

111

Said Svante Arrhenius: "The change of the logarithm of a chemical reaction rate constant with respect to temperature, is inversely proportional to the square of the absolute temperature."
The aerospace industry is searching constantly for strong, light-weight, heat-resistant materials. Finely-spun glass fiber, bonded with a plastic binder, is beginning to exhibit superior properties. Until recently the glass fiber has been far more heat-resistant than any binder.
Scientists at Lockheed Missiles & Space Company, however, have developed a compatible binder. This now makes it necessary for the glass-producing industry to evolve a glass to match its superior heat-resistance.
Comparable successes are being achieved in dozens of disciplines in which Lockheed is engaged. As Systems Manager for the DISCOVERER, MIDAS, and other satellites, and the POLARIS FBM, Lockheed probes all areas of aerospace endeavor.
Lockheed Missiles & Space Company is located on the beautiful San Francisco Peninsula, in Sunnyvale and Palo Alto California. Why not investigate future possibilities at Lockheed? Write Research and Development Staff, Dept. M-30C. 599 Mathilda Avenue, Sunnyvale, California. An Equal Opportunity Employer.

AT THE NEW YORK IRE CONVENTION, please contact Mr. R. L. Main at the convention hotel, or call PLaza 2-0644
LO cicme-e-z, MISSILES & SPACE COMPANY

A GROUP DIVISION OF LOCKHEED AIRCRAFT CORPORATION
Systems Manager for the Navy POLARIS FBM and the Air Force AGENA Satellite in the DISCOVERER and MIDAS programs. Other current programs include SAINT, ADVENT and such NASA projects as OGO, OA°, ECHO, and NIMBUS.
SUNNYVALE, PALO ALTO, VAN NUYS, SANTA CRUZ. SANTA MARIA, CALIFORNIA · CAPE CANAVERAL, FLORIDA · HAWAII

112

electronics

·

Series 190034 Plug & Socket. 34 contacts

·

illustrated with side opening aluminum

·

hood and protective shells.

Series 1900152 Plug & Socket. 152 con-

tacts with wire-wrapping terminations

and reinforcing stainless steel channels.

·

CENTER ···· ··· SCREWLOCK CONNECTORS ···

·

·

·

·

·

·

.

.

G

·. 1

.

.

__·/;'

-

·

...

'''

·

Series 190078 Plug & Socket. 78 contacts

illustrated with mounting flange pro-

· ·

tective shell. Also 104 contacts.

Series 190022 Plug & Socket. 22 contacts

· illustrated with side opening aluminum

· ·

hood, protective shell. Also 10 contacts.

small size...big reliability

Designed expressly for critical military and commercial applications, Continental Connector's Series 1900 Center Screwlock Plugs and Receptacles can provide up to 152 connections in less than 3.6 inches length! And --they've proven their reliability in hundreds of heavy duty aircraft, missile, computer and ground support installations. Features include double lead thread action center screwlocks, closed entry contacts, positive polarization, glass filled Diallyl Phthalate moldings. Standard types are available with 10 and 22 contacts for #20 wire, 34, 78 and 152 contacts for
#16 wire... available with wire wrap terminals, hoods and protective shields.

DESIGNERS' DATA FILE

f Continental's Con-Dex File CSL has been compiled to help you select and specify
the Center Screwlock Connectors best suited to your needs. For your copy write
to: Continental Connector Corporation, 34-63 56th Street, Woodside 77, New York

CONTINENTAL MICRO-MINIATURE ·SUB-MINIATURE ·MINIATURE ·PRINTED CIRCUIT ·RIGHT ANGLE PIN &SOCKET ·CENTER SCREWLOCK

CONNECTORS

CONTINENTAL CONNECTOR CORPORATION · WOODSIDE 7 7 , NEW YORK See Us At The IRE Show · Booths 2307-2309

March 9, 1962

CIRCLE 113 ON READER SERVICE CARD

113

AN IMPORTANT MESSAGE For ELECTRONIC ENGINEERS Interested in
creating the unusual

Today there is anew Navy in the making that will need the best design, integration and evaluation talents you and your colleagues can offer.

For example, there will have to be a number of rugged new electronic/acoustical systems created for military and scientific missions operating miles down in the blackness and pressures of INNER SPACE . . . quick reaction tactical systems for hydrofoil and hydrokeel craft of all sizes and functions ... and, of course, a variety of high capacity computing systems for nuclear-powered ships designed to launch and control advanced weapons from on,
over or under the sea.
And not far in the future there will be a need for even more exotic systems devised for Naval vessels that will fly, float, submerge . . . and come up on land.

The Field Activities of the U.S. Navy's Bureau of Ships--including eleven shipyards, six laboratories and supporting industrial liaison
activities--play a major role in actually creating this new Navy, including all the electronic systems and equipments required.

IF YOU ARE
EXPERIENCED IN

Communication and Antenna Systems Radar, Navigation and ECM
Navy Tactical Data Systems Sonar Systems and Equipment Guided Missile Weapons Systems

you'll find unusual opportunities for independent and important work with the Bureau of Ships' Field Activities in
any of these capacities:

Project Supervision at a Naval Shipyard
...to investigate fleet requirements first hand, determining whether present electronic equipment can be adapted to an advanced requirement, or whether a new design is needed, ...determine the design and test specifications in accordance with the ship's operating and physical environment. ...evaluate and test any suggested design or improvement for operating feasibility on a particular ship or installation, ...integrate new systems into a ship's existing electronic environment, ...participate in sea trials as a final operating checkout, and as a means of suggesting still further improvements, and ...direct and control resulting prototype development projects.
As a Project Engineer at a Naval Shipyard, you would be expected to have an on-the-deck as well as a behind-the-desk capability for designing, integrating, testing and evaluating electronic systems . . . for seeing what is needed and how to get it done.
Applied Research at a BuShips Laboratory
...to do fundamental research, and experimental development--as well as subsequent reliability and stability studies--on new and novel electronic systems and equipments of all kinds,

...help develop Naval Tactical Data Systems for particular classes of ships, including computer integration of data received through radar, sonar, fire control and navigation devices, and the visual presentation of this data by electronic display, and
. . . conduct basic measurement program in electronic/acoustical technology.
As a Research Engineer at a BuShips Laboratory, you would be expected to create entirely new concepts on the one hand, and perform basic measurement and evaluation work on the other ...to come up with ideas that will work and fill an unusual need.

Systems Engineering of Shore Electronics
. . . to conduct on-site surveys for shore electronic equipments here and overseas, . . . prepare installation designs and monitor installation of systems, and . . . trouble-shoot for existing systems.
Operating out of a Naval Industrial Managers Office, you would help create, install and maintain a variety of shore systems wherever they might be needed ...seeing that they work and keep on working.

Consulting Engineering with Naval Contractors
...to review contractor plans and procedures for installing equipment on board ship and
. . . monitor installation, and provide consultation on installation problems.
Operating from the Supervisor of Shipbuilding's Office at a contractor facility, you would have broad responsibilities to make sure new shipboard systems and equipments were properly installed . . and functioning.

If you are interested in any of these opportunities which now exist on both coasts and in Hawaii with the Bureau of Ships' Field Activities, we would appreciate hearing from you. And in considering your future, don't overlook the extra benefits of Career Civil Service-- liberal vacations and sick leaves, wholly- or partly-supported postgraduate education, participating Health, Retirement and Life Insurance plans.
Starting Salaries $8,340 up to $12,210. Relocation expenses paid by Navy. All inquiries will be acknowledged immediately, and will be handled in complete confidence. Write: Director--Industrial Relations and Manpower.
The Bureau of Ships

Code 722, U. S. Navy Department Washington 25, D.C.
An Equal Opportunity Employer

114

electronics

r.

SWEEP AUDIO FRaEndQHUIEGNHCY
FILTER CIRCUITS

NEW
ICV
Sona--Sweepe
MODEL M

with the Ease and Precision of RF Sweep Techniques

FEATURES

· Built-In Audio Detector · Sharp, Pulse-Type Markers · Variable, Pulse-Type Marker
from Ext. CW Source · Logarithmic and Linear
Frequency Sweep · Variable Center Frequency

· Variable Sweep Width Built-In Attenuators
· Zero Reference Line
· All-Electronic
· Both Swept and Manual Frequency (and scope display) Control

FREQUENCY RANGE: 20 cps to 200 kc, variable
SWEEP WIDTH: 20 cps to 20 kc, variable
REPETITION RATE: 0.2 to 25 cps, variable
OUTPUT LEVEL: 5.0 volts rms into 600 ohms

PRICE: $1295.00 F.O.B. FACTORY; $1425.00 F.A.S. N.Y.

VISIT KAY AT THE IRE SHOW BOOTHS 3512-3518
March 9, 1962

Write for Complete Catalog In formation
RCM ELECTRIC COMPANY
Dept. E-3 · MAPLE AVE.. PINE BROOK. NEW JERSEY · CAPITAL 6-4000

CIRCLE 115 ON READER SERVICE CARD

115

if you have Printed Circuit Designers!
AVOID Wire Failures
your eye on at Soldering Temperatures an exciting future

You've never had aprinted circuit fail at room temperature. But you may often have experienced loose wire trouble in the soldering pot or during solder roller coating.
Synthane G-10R, aspecial glass epoxy base laminate, was developed especially to eliminate wire failures during the soldering operation--approximately 500°F.
G10-R meets or beats NEMA and MIL specs for peel strength at room temperature and has ahot peel strength of 2 to 4 lbs. per inch of width after immersion for 15 seconds at 500°F* instead of the customary 0.1 to 0.2
lbs. per inch of width.
G-10R is available in sheets 36" x36" or 36" x48" and in the usual foil thicknesses. Write for new folder on all Synthane metal-clad laminates.
*Tests made on 1 4 & ifi" wires.
CSYNIIIANIO See us at the IRE show, Booths 4421-23

CORPORATION S

OAKS, PENNA.

GLendale 2-2211

TWX Valley Forge 735U

Synlhane-Pacific 518 W. Garfield Ave., Glendale 4, Calif. TWX GLDL 4417U

Synthane Corporation, 36 River Rd., Oaks, Pa.
Gentlemen: Please send me your latest brochure on Synthane G-10R and other Synthane copper-clad laminates.

Name Address City

Zone

State

116

CIRCLE 116 ON READER SERVICE CARD

III · · · · · exciting things are happening at Eimac.
Who's the world's foremost developer and manufacturer of electron power tubes? Eimac--with a long line of firsts in the field. The first modern beam magnetic optics. The first practical matrix cathode. The first metal-ceramic tubes. The first modulating anode.
And at the IRE Show, 16 new products are displayed for the first time--and other firsts are coming.
Eimac tubes have powered the first satellite bounce communication. The longest command-response achieved by man. The first radar contact with the moon. Venus. And the sun.
Tomorrow: not even the sky's the limit.
You can make this exciting future your future. Each of our development laboratories has openings for microwave tube or power grid tube development engineers. If your forte is developing new higher power, higher frequency tubes, or cavities or test equipment. Or if you have a flair for solving tube production problems and advancing production techniques and equipment, there are exciting challenges to investigate at Eimac. You'll work in an area renowned for its concentration of electronics industry, sunny weather, fine schools and pleasant living conditions. If you can qualify, write: Mr. C. F. Gieseler, Department B, Eitel-McCullough, Inc., San Carlos, California. An equal opportunity employer.
KEEP YOUR EYE ON
electronics

TRID/IIM'IPCI4ES PROGRESS IN L-BAND TECHNOLOGY
G-E TETRODES AND TRIODES OFFER...
HIGHEST AVAILABLE POWER AND DUTY RATINGS TO MEET NEW IFF REQUIREMENTS

GL-7399 long life is proved in IFF cavity designed by Power Tube Department.

New General Electric metal-ceramic, negative-grid transmitting tubes permit operation at peak power levels up to 10 kw and duty cycles up to .02.

Their outstanding electrical performance and com-
pact mechanical construction simplify military and commercial IFF equipment design, with greater reliability for airborne and ground applications.

For instance, Type ZP-1018 has gain capability up to twice that of any tube type in its class. High
power gain in grid-pulsed amplifier service eliminates need for a modulator, offering space- and weightsaving opportunities in circuit design. Heat-sink con-
duction cooling also reduces component requirements, minimizes package size. Longer life and
more reliable performance are achieved by use of a cathode area seven times that of tubes commonly employed in this service.

Type ZP-1025 features internal feedback--an industry first for a tube of its size--which simplifies cavity design for oscillator service in transponders.

TO ORDER, or obtain more information, call your

Power Tube Sales Office.

265-18

POWER TUBE DEPARTMENT

GENERAL

ELECTRIC

TELEPHONE TODAY:

Syracuse

01. 2-5102

New York

WI 7-4065

Clifton, N. J.

GR 3-6387

Washington, D.C. ..EX 3-3600

Chicago Dayton Orlando, Fla. Los Angeles

March 9, 1962

SP 7-1600 BA 3-7151 GA 4-6280 GR 9-7765

zp I025 (shown 23/4 " actual size) reflects design trend in G-E IFF tubes.

TYPICAL OPERATION FOR TUBES NOW IN FAMILY

Tube

IFF Application

Service

Frequency Peak Power

mc

KW

Duty

GL-7399 Ground-based Grid-Pulsed Interrogator Amplifier

1030

10

.01

LP-1015 Airborne

Grid-Pulsed

Interrogator Amplifier

1030

10

.01

ZP-1018 Airborne

Grid-Pulsed

Transponder Amplifier

1090

2

.02

ZP-1025 Airborne

Oscillator

Transponder

1090

2

.02

117

The world's only automatic stripper for braided wire shielding

-- now available from Cadre ...

ONE AUTOMATIC SHIELD STRIPPER WILL:

· STRIP up to 1200 braided wire shields per hour. · SAVE up to 75 manhours per machine, per 8hour shift. · FREE 6, or more, people and their work stations for other tasks. · MULTIPLY hourly cable output ten times. · ELIMINATE

·opeSraTtAoNr DtArRaiDnIinZgEanledngftahtiogfuesh--ieldaingsirmepmloevepdr,esssimopfliftyhieng

footswitch does it all! subsequent production

steps and improving the quality of the end product. · PRECLUDE faulty workman-

ship and materials wastage.

These are results you can count on with Cadre's new automatic braided wire shielding stripper ... results that will inevitably mean significantly increased profits for the radio, TV, telephone, wire and electrical apparatus industries. Originally developed to further automate Cadre's own cable, wiring harness and computer subassembly production set-up, the unit is now available to industry from Cadre.

This Machine

INCREASED OUR

PRODUCTION

EFFICIENCY

OVER 1000%

HAND OPERATION -- 115 Ends per hr. a MACHINE OPERATION -- 1200 Ends per hr.

Additional Data:
a Available on astraight purchase or on rental or lease/purchase agreement. · Interchangeable cutting heads for different shielding diameters avaliable. · Compact for space-saving bench-mounting -- Model 15: 24 1/2"x14" x14" --
Model 35: 31" x14" x15". · Power requirements -- 115 volts, 60 cycles, singlephase AC (unless otherwise
specified), 6amps.
The spectacular results CADRE achieved ...you can achieve,

V

too. Write today for complete details and specifications.

A CD

INDUSTRIES CORPORATION
ENDICOTT, NEW YORK
CIRCLE 233 ON READER SERVICE CARD

You do if your project involves

NEED

very low signal levels. This was the case recently when amajor

65-80 db
ISOLATION BETWEEN

transistor manufacturer specified EIC custom transformers
with 65 db isolation between windings, from 60 cycles to 10 kc. (We can give you 80 db if required.)

TRANSFORMER WINDINGS?

Insulation resistance specified (winding to winding and winding to
case) was 300,000 megohms.

Send us your complete specifications

for prompt price and

performance quotations.

TKK INDUSTRIAL MOTORS
Lowest Drain, Minimum Noise, Longest Life -- at Low Cost

E IC

ELECTRODYNAMIC INSTRUMENT CORPORATION
Subsidiary of Reed Roller Bit Company
JA 6-3761 · 1841 Old Spanish Trail · Houston 25, Texas

118

CIRCLE 118 ON READER SERVICE CARD

RM-170 T

FM-250 R

FM-250 N

APPLICATIONS
* Tape-recorders * Record-players * Clocks * Shavers * Music Boxes * Cinecameras * Turntables * Automations * Other Appliances

type
RM-170 T models
RM-170 S models
RM-170 SC models
FM-250 N models
FM-250 R models

voltage (D.C.) 1.5 -- 3.0 V 1.5 -- 6.0 V 3.0 -- 12 V 1.5 -- 4.5 V 1.5 -- 6.0 V

Large orders executed reliably and on schedule by the world' largest factory specializing in D.C. magnetic low current motor (Output: up to 2i million units per month !) Your detailed inquiry is invited -- your satisfaction guaranteed.

MABUCHI SHOJI K.K.
37, Kabuto-cho 2-chame, Nihonbashi, Chuo-ku, Tokyo, Japan
C.P.O. Box 1084, Tokyo Cables: "NIHONKAKOCO TOKYO"

CIRCLE 234 ON READER SERVICE CARD electronics

iei. SUPER SERIES... Twice as much capacitance
in each MIL case size

NEW iei C-3 Super Series 400 MFD/15WVDC

MIL-C-3965 C-4 Standard 400 MFD/15WVDC

Up to 50% Space Savings in 85° Tantalum Foil Capacitors

Without sacrificing performance or voltage rating, iei packs twice as much capacitance into each SUPER SERIES case size as is called for in MIL-C-3965/2.
·Capacitances double those in MIL-C-3965/2 ·DCL values half those in MIL-C-3965/2 ·Impedance values half those in MIL-C-3965/2 ·Capacitance tolerances closer than those in
MIL-C-3965/2 ·Weight and space per uF/V cut up to 50%
Only iei knows how to make foil capacitors so good and so small. Space-and-weight saving SUPER SERIES polar units are available now. Full specifications in new Form 2850. Write to International Electronic Industries, Box 9036-94, Nashville, Tennessee. A Division of Standard Pressed Steel Co.
"March 9, 1962

Compare These Typical Space and Weight Saving Advantages

Case Size

Voltage

Capacity

MIL-C-3965

1E1 Super Series

Cl

C2

15

C3

WVDC

C4

C5

15 mfds. 60 200 400 580

30 mfds. 120 400 800 1160

International Electronic Industries Div.

where reliability replaces probability

CIRCLE 119 ON READER SERVICE CARD

119

89% of the answers
Stressed Opportunity
to work on interesting and challenging projects
We Have Them IN DEPTH,

· s
es

welmeee'eese.' 0 °99°
0 WO5,5 `,+ e

pee

0 ffie'e's

ar_5v

0 ee5 % 9 'çOY'ee°eeeeele' "eeeeeee

·

0` 4eeee

cJ 0,,e,,, ee,

FOR INSTANCE ...
Giant C-141 jet transports -- Intercontinental C-130 turbo-prop transports -- JetStar passenger craft --VTOL aircraft --Missiles --Rockets-- Nuclear Products and Research -- Avionics Research -- Operations Research -- Cryogenics Research -- parts for the Saturn -- and scores more. If such varied longrange projects challenge your interest, write us today!

eess0
Sc

tee'
ENGINEERS
Have YOU Answered
This Invitation Yet?
It has appeared in recent issues of Scientific American, Aviation Week, Aerospace Engineering, Aerospace Management, Space Aeronautics and a number of other publications. Answers received so far indicate that we already offer a remarkably high percentage of the advantages desired by the majority of Engineers AND THAT WE CAN PROBABLY TAILOR A POSITION TO FIT THE REQUIREMENTS OF THE EXCEPTIONS. You'll never know how well your own desires and requirements can be satisfied unless you challenge us to meet them by telling us WHAT YOU WANT!
We challenge YOU TO DO IT NOW!

THE ENGINEERING CEN I ER
LOCKHEED-@@2@gM COMPANY
A DIVISION OF LOCKHEED AIRCRAFT CORPORATION AN EQUAL OPPORIUNITY 1MPLOYH
Where, we find, there's MORE of what MORE Engineers want MORE of.

Write to:
Hugh L. Gordon Professional Employment Manager Lockheed-Georgia Company 834 West Peachtree Street Atlanta 8, Georgia Dept. WW-88

120

electronics

CHECK

QUICKLY

WITH THE
GENALEX TENSION
GAUGE

SOPL1RDO-SVTEATNE RPOEWLEIRABIINLVIERTTYERS,
over 260,000 logged operational hours-- voltage-regulated, frequency-controlled, for missile, telemeter, ground support, 135 0Call-silicon units available now-

FOR checking the tension of springs or similar resistive forces. · Most precise
· Easiest to read
Available in six tension ranges from 4 to 2500 grams
for free illustrated leaflet, write to

U. S.

411112eeieF e

°,)..

11 UNIVERSITY ROAD. CAMBRIDGE 38. MASS. AGENTS FOR THE GENERAL ELECTRIC COMPANY, LTD. OF

ENGLAND

CIRCLE 235 ON READER SERVICE CARD

Around the world its KEW

MODEL F-98

MODEL EW-16

MODEL P-22

MODEL VO -38

MODEL TK-20A

MODEL FL-202

MODEL PV-200

MODEL IR -A

SWR & RF WATTMETER

No. 120, Nakane-cho, Meguro-ku, Tokyo, Japan Cable Address: "KYORITSUKEIKI TOKYO" Tel : (717) 0131 -- 5 · 0151 3

March 9, 1962

CIRCLE 236 ON READER SERVICE CARD

5/01[5_ INfet7EIREG ulATEU voLTAu,,ivEHTE R
INTL n e ppri
POW °

Interelectronics all-silicon thyratron -like gating elements and cubic-grain toroidal magnetic components convert DC to any desired number of AC or DC outputs from 1 to 10,000 watts.
Ultra-reliable in operation (over 260,000 logged hours), no moving parts, unharmed by shorting output or reversing input polarity. High conversion efficiency (to 92%, including voltage regulation by Interelectronics patented reflex high-efficiency magnetic amplifier circuitry.)
Light weight (to 6 watts/oz.), compact (to 8 watts/cu. in.), low ripple (to 0.01 mv. p-p), excellent voltage regulation (to 0.1%), precise frequency control (to 0.2% with Interelectronics extreme environment magnetostrictive standards or to 0.0001% with fork or piezoelectric standards.)
Complies with MIL specs. for shock (100G 11 misc.), acceleration (100G 15 min.), vibration (100G 5 to 5,000 cps.), temperature (to 150 degrees C), RF noise (1-26600).
AC single and polyphase units supply sine waveform output (to 2% harmonics), will deliver up to ten times rated line current into a short circuit or actuate MIL type magnetic circuit breakers or fuses, will start gyros and motors with starting current surges up to ten times normal operating line current.
Now in use in major missiles, powering telemeter transmitters, radar beacons, electronic equipment. Single and polyphase units now power airborne and marine missile gyros, synchros, servos, magnetic amplifiers.
Interelectronics--first and most experienced in the solid-state power supply field produces its own all-silicon solid-state gating elements, all high flux density magnetic components, high temperature ultra-reliable film capacitors and components, has complete facilities and know how--has designed and delivered more working KVA than any other firm!
For complete engineering data, write Interelectronics today, or call LUdlow 4-6200 in New York.

INTERELECTRONICS CORP.
2432 Gr. Concourse, N. Y. 58, N. Y.

CIRCLE 121 ON READER SERVICE CARD

121

ENGINEERS GAIN A NEW PERSPECTIVE AT AC
AC, the Electronics Division of General Motors, has made adistinct contribution to technological' advancement in the field of low-altitude aircraft operation. You, too, can develop and improve your career in the areas of guidance and navigation if you are an Electrical Engineer, Mechanical Engineer, Physicist or Mathematician. Current projects include: Integration and Engineering Design of AN/ASQ-48 Weapon System for the B-52C&D aircraft, Inertial Guidance System of the Titan II, and the development of Stellar Inertial Guidance System for use in long range ballistic missiles. If you have related experience and are interested in any of the following positions, please contact Mr. G. M.Raasch, Director of Scientific and Professional Employment, Dept. 5753, 7929 South Howell, Milwaukee 1, Wisconsin.

MILWAUKEE

Weapon Systems Program Engineers ·Radar Design and Development Engineers ·Radar Systems Engineers ·Radar Test Engineers ·Reliability Program Engineers ·Field Service Engineers · Electromagnetic Engineers ·Supplier Contact Engineers ·Quality Control Engineers/Analysts ·Technical Writers and Editors ·Scientific Programmers ·Ceramic Engineers

LOS ANGELES RESEARCH AND
DEVELOPMENT LABORATORY

(Advanced Inertial Guidance Systems and Airborne Digital Computers)--Digital Computer Development Engineers ·Research and Development Engineers ·Transistor Circuit Design Engineers ·Systems Engineers ·Programmers-Mathematicians

BOSTON RESEARCH & DEVELOPMENT LABORATORY

(Advanced Inertial Guidance Systems and Components)--Systems Engineers and Mathematicians ·Electronic Circuit Engineers ·Mechanical Design Engineers ·Instrument Engineers · Electromagnetic Engineers · Radar Systems Engineers

AC SPARK PLUG

THE ELECTRONICS

DIVISION OF GENERAL MOTORS An Equal Opportunity Employer

AChiever Inertial Guidance for the TITAN IT MACE and THOR ... Bombing Navigation Systems Integrator for the B-52cao ... POLARIS Gyros and Accelerometers ... ALRI ... Commercial Products

ri

122

CIRCLE 123 ON READER SERVICE CARD-÷-

Raytheon/ Rheem 2N1613 silicon planar transistor, available per MIL-S-19500/181 (U.S.N.)
Rheem Semiconductors Now Manufactured by Raytheon

The Raytheon/Rheem combined product line provides industry with one of the most advanced lines of silicon and germanium semiconductors available. Raytheon not only assures faster delivery on Rheem types through highvolume production and national distribution -- but also offers comprehensive application engineering assistance from both coasts.
The Rheem technical staff has been combined with the Raytheon research and development group to create an outstanding capability for development, engineering and production of new semiconductor concepts. Customers can also look forward to continued availability of the famous Mark X and Mark XII ultra-high reliability assurance programs.
SEMICONDUCTOR DIVISION
Lowell, Massachusetts

A few of the advanced Raytheon/Rheem types now added to Raytheon's broad product line --
SILICON UNIPLANAR DIODES 1N3064 (MIL), 1N914 (MIL), 1N916 RD750 Nanosecond Power Diode
UNIVERSAL DIODES RD250 Universal Multi-purpose Diode
SILICON TRANSISTORS MIL Type 2N1613 (USN) Passivated Planar
Construction 4 Watt Diffused Silicon NPN Mesa 2N497, 2N498, 2N656, 2N657, 2N696, 2N697
Visit Raytheon Semiconductor Division Booth 2606-2608 at the IRE SHOW
RAYTHEON

Another outstanding development by the makers of BUSS Fuses

BUSS In-the-Line or Panel Mounted Fuse & Holder Combination
HLR Holder for GLR and GMF Fuse
For the Protection of Fluorescent Fixtures or Other Equipment... 300 Volts or less

These BUSS Fuse & Holder combinations make it especially simple to protect fluorescent fixtures. They are also being used in a wide variety of other applications to protect any device or equipment on circuits of 300 volts or less.
BUSS GLR fast-acting type fuses or BUSS GMF slow-blowing type fuses are used in combination with BUSS HLR fuseholders. Fuseholder can be installed inthe-line or panel mounted.
Fuse and knob of fuseholder are in one piece. When afuse blows, the entire fuse knob assembly is replaced. Cap of holder is insulated to protect user against possibility of shock.

Why safety demands that fluorescent fixtures be protected.
Trouble in fluorescent fixtures generally starts when the insulation in the ballast breaks down. This causes a short which develops heat, and can result in:
Molten compound dripping on people, equipment and merchandise ... Gases forming and exploding, injuring personnel or damaging stock and equipment ... Fires starting in ceiling or walls near fixture ... Short continuing until branch circuit fuse blows and cuts off all lights on circuit.
All these dangers can be minimized by proper BUSS GLR or GMF fuse protection.
To get the full story, write for BUSS bulletin SFH-6.

I.R.E.Show BUSS--The complete line of fuses

See us at the

& mountings of unquestioned high quality

Booth 2740

BUSSNIANN MFG. DIVISION McGraw-Edison Co. ST. LOUIS 7, MO.

124

CIRCLE 124 ON READER SERVICE CARD

electronics

This is the MULTICOUPLER so small
that needs only 12 watts power in all to route incoming signals to many a station while keeping them clean with high isolation that's compact and modular and miniaturized that's 80% cooler
and transistorized that came from the house
-that TRAK -built

TRAK ANTENNA MULTICOUPLER MODEL 108 For hf direction finding and communications systems. Miniaturized-- Transistorized. Noise figure: less than 8 db. Output isolation: 40 db. Dissipates 80% less heat than vacuum tube units. 2-32 MC. IM Distortion: 60 db below .25 V. Size: < 1/2 cu. ft. 8outputs.

TRAK ANTENNA MULTICOUPLER MODEL 4 Noise figure: less than 6db. Insertion gain: 3 db. Output isolation: greater than 50 db.2-32 MC..10 outputs.

TRAK ANTENNA AMPLIFIER/COUPLER MODEL 9126 Amplifies signal allowing 4000 ft. lead-in from antenna to receiver. 10db of gain from 2-40 MC. Noise figure: less than 4.8 db.
The Communications and Reconnaissance Dept. of Trak Electronics designs and manufactures on quantity or individual basis completely within their own plant. This permits "package cost" quotation at your design conception stage. Our engineering dept. will be glad to offer any design and specification assistance.

MODEL 4

Simply write 59 Danbury Road or telephone POrter 2-5521.

Tk

COMMUNICATIONS & RECONNAISSANCE DEPT., TRAK ELECTRONICS COMPANY, INC., WILTON, CONN.

March 9, 1962

CIRCLE 125 ON READER SERVICE CARD

125

PRODUCTION TECHNIQUES

Meter movement is in place and automatic equipment is calibrating a dial for it photographically. Completed meters with individually calibrated dials at right

Special fixture holds meter movement in position as rotating scanner translates the actual position of pointer to mylar film

NIVE es

·s>"

9

0,
SPECIAL

Meter Dials Calibrated Automatically

PANEL METERS With high accuracy and linearity are being manufactured on aproduction line basis by Assembly Products, Inc., Chester-
land, Ohio, and will be on display at IRE. The excellent performance of the meters is the result of two

factors: first, friction and hysteresis are essentially eliminated by taut band suspension; second, the
meters are individually calibrated by an automatic dial marking machine.
Linearity, or tracking, of -1.-0.5

DRIVE MECHANISM

PHOTOELECTRIC PICKUP
FLASHTUBE

LIGHT SOURCE
METER

(A)

PROGRAMMED LINE MASKS
( AMPL TRIGGER AND POWER SUPPLY

PHOTOELECT

(B)

PICK-UP

AMPLIFIER

TRIGGER CIRCUIT

THYRATRON

XENONTUBE

Rotating scanner is illuminated and armed over the arc through which the pointer moves. When the pointer blocks the light, the resulting signal triggers the flash tube and the position of the pointer is transferred to sensitized mylar film

percent is guaranteed in meters produced by the new methods, in contrast to the 2or 3percent linearity typical of meters not specially
calibrated. When special care is taken to preserve the physical prop-
erties of meter materials, absolute accuracy as fine as -±-0.5 percent
also can be obtained. The dial printing machine auto-
matically divides the full-scale current drawn by the meter into units that correspond to the dial divi-
sions required. Each point is printed by an automatic photo-
graphic process on the actual dial that is later attached to the meter. First step in the dial printing process is placing an otherwise complete meter in a fixture that is clamped on the front of the machine. Meter terminals are connected to a console where programming adjustments are made in accordance with
the number and type of scale divisions specified for the dial. At pres-
ent the minimum practical number of divisions is 30--although as few as 10 have been printed experimentally--while the maximum is 180.
The full-scale signal of the meter is also set in on the console; the pro-

126

electronics

NEW BR-5 RELAY COMPLEMENTS OTHER BABCOCK SERIES
The new BR-5 is smallest of the precision relays that Babcock manufactures. Despite its small size, it features the same rugged dependability and operating versatility that distinguish all Babcock products.
Most airborne, undersea or ground support requirements can be satisfied by Babcock's standard line of relays, while other requirements are met by special variations. The following relay series show typical performance characteristics of Babcock's standard product line.

BR-5 MICRO/MICROMINIATURE DRY CIRCUIT TO 1 AMP SERIES
Contact Rating: 1 amp res. @ 32V DC, .050 2 max. · Contact Arrangement: SPDT ·Vibration: 30g, 40 to 3000 cps; 0.4" DA, 10-40 cps · Shock: 125g, 11 millisec. · Life: 100,000 operations min. @ 1 amp, 125°C. · Military Speck. fication: meets MIL-R-57570.

BR-7 SUBMINIATURE DRY CIRCUIT TO
POWER SWITCHING SERIES
e Contact Rating: 2, 5 and 10 amp res. 28V DC or 110V AC, 400 cps · Contact Arrangement: SPDT, DPDT · Min. Pull-in Power: 80 mw/pole, derated to 50 mw · Header Styles: plug-in terminals, solder hooks, 3" printed circuit leads.

130.7 SERI!.

BR-8 MICROMINIATURE CRYSTAL CAN SERIES
Contact Rating: 2 amp res. @ 32V DC or 115V AC, 400 cps; I amp inductive @ 32V DC · Contact Arrangement: SPDT or DPDT · Dry Circuit: lAa @ 1 mv, 100 9 max. contact resistance · Size: .360" x .790" x .870" high (current sensitive, 1.190" high).

BR-9 SUBMINIATURE MAGNETIC LATCHING SERIES
Contact Rating: 5 and 10 amp res. @ 28V DC or 110V AC, 400 cps · Contact Arrangement: DPDT · Header Styles: 10 pin or 8 pin polarized · Holding Coils: separate or series operation.

b..·5 Sr,!.

BR-12 MICROMINIATURE ULTRASENSITIVE SERIES

Relay Types: standard, high sensitivity, max. sensitivity and centepede "lie down" printed circuit versions · Con-
tact Rating: 2 and 3 amp res. @ 32V
DC or 115V AC, 400 cps; 1 amp inductive @ 32V DC (max. sensitivity unit 2
amp res. @ 28V DC) ·Contact Arrangement: SPDT or DPDT · Coil Power (max. sensitivity unit): 25 mw SPOT,
40 mw DPDT.

OR-12 SERIES 5R-12P SHOWN

BR-14 SUBMINIATURE FOUR POLE, DOUBLE THROW SERIES
Contact Rating: (@ 28V DC or 115V, 400 cps): 10 amp res., 3.5 amp inductive; 7.5 amp res., 2.5 amp inductive; 5 amp res., 2 amp inductive · Contact Arrangement: 4PDT (4 form C) · Size: 1.000" x 1.075" X 1.300" · Weight: 3.0 oz. Tax.

141
eR·14

Dry circuit to 1amp switching in a rugged 1/10th oz. hermetically sealed relay
Babcock's dependable new BR-5 SPDT relay easily handles any load to 1full amp at 32V DC. The transistor can-sized package is only as large as it needs to be, measuring 0.2" x 0.4" x 0.6". A special magnetic circuit is responsible for its high sensitivity, generally a limiting factor in relay miniaturization. Exceptionally rugged, the BR-5 is built to withstand 125g shock and 30g vibration at 3000 cps. Selective utilization of materials enables --65°C to +125°C operation, ideal for missile and space probe environments. Available in various mounting styles with printed circuit leads. Interested designers should contact their Babcock representative or write direct for Bulletin BR 617.

Valleice% Zetete,d
A Division of Babcock Electronics Corporation 2645 Babcock Avenue, Costa Mesa, Calif.
CIRCLE 127 ON READER SERVICE CARD

It)
SPEEDS up to SOO steps/second

Wide design choice

IN FAST, ACCURATE, QUIET AND LONG-LIVED
Cyclonome® Non-Mechanical* Stepping Motors

TORQUES from 50 to 350 gm.-cm.

Converting pulses or current reversals into precise 18 ° angular rotations or shaft positions without "misses" or overshoot -- *and without ratchets, escapements, solenoids or stand-by power --is the basic job done by
every one of these Cyclonome ® motors. Stepping is accomplished magnetically -- and the only moving part is the rotor.

SIZES as small as 0.94 cu. Inch

But to get enough torque to drive punched paper tape, magnetic tape, movie film or various machine tool and process control instrumentation loads, amotor with substantial torque output is necessary. With a torque output of 350 gm.- cm., the "Series 9AG" Cyclonome can handle many of
these jobs. Or say you're designing atraffic counter, electric impulse clock, telemetry pulse translator, recorder chart drive mechanism or some other piece of equipment of commercial quality. The practical economics of the situation (and perhaps
lower speed and life requirements as well ) may make the low -cost 9AB Series Cyclonomes particularly useful. If precise and very high speed stepping or positioning is your main problem, the 9AE Cyclonomes will faithfully and discretely follow seven or eight-hundred commands a second ; this could let you feed information into a computer, for example, run a"sampling switch" or read information out of other devices in avery efficient manner.
The same "high -speed" Cyclonome also occupies less than acubic inch ; if you're

COSTS as low as $15 per motor
working with high density packages, or need an inch -ounce of torque to operate a digital display in a minimum of panel space, this little Cyclonome can be very handy. (The fact that no power is needed by any Cyclonome to maintain "holding torque" also has obvious advantages in simpler drive circuits and cooler equipment operation.)
To each of these particular abilities should be added the over-all virtue of more reliable equipment operation a Cyclonome motor can often provide--partly because it has no mechanical ratchets or escapements to slip, clatter or wear out, and partly because it may let you simplify othe, ,,arts of your design. The table below shows the basic choices now offered in Cyclonomes: if it gives you some ideas, we'd enjoy talking them over with you -- either by phone or letter or at the IRE Show in New York, Booth 2628-2630.

Max. torque
(gm.-cm.)
Max. speed** (steps/sec.)
Approx. size

"STANDARD"

Unidirec. 80

Bidirec. 120

HIGH TORQUE 350

MINIATURE 80

300

300

450

600-800

1-5/8 x1-27/32 x1-13/32

1-5/8x 1-27/32 x2-5/32

2-9/16x 1-1/2 x1-13/16

1-1/2 x5/8 x1

**Motors will run synchronously at much higher speeds, but will stop and start instantly only within stated stepping speed range.

LOW COST 50
60 2-7/16 a1-1/2
x1-13/16

IGMA

23S ,ZerLe.&. Ellf01.C1F-3'UrDOE
62 PEARL ST., SO. BRAINTREE 85, MASS.

128

CIRCLE 128 ON READER SERVICE CARD

IIW

grammer then breaks down the total signal into the number of divisions required. The console then supplies the meter with current increments, beginning at zero, that correspond with those to be printed on the dial. A rotating lens (see sketch) continuously scans a section of aback-lighted prism in front of which the meter pointer steps for each current increment.
As the photoelectric pickup rotates through the lighted arc of interest, the black image of the pointer causes a photomultiplier tube to put out a negative voltage

2

4

6

10

D. C. MICROAMPERES

Partially finished dial showing calibration marks, and complete dial
pulse whose timing is a function of pointer displacement. The pulse is amplified and then fires a stationary zenon flash tube whose light goes through a series of lenses and a slit, strikes a mirror, and then passes through two backto-back lenses with long focal length; these lenses focus the beam on a sensitized film cf mylar. Length of the mark--minor, submajor or major--is determined by a programmed mask that changes the size of the slit through which the light passes. Other necessary information such as trademarks, unit names and numbers, are then photographically printed on the dial; after further processing the dial is fitted to the particular meter movement it was processed with.
At present, the rate of printing speed is determined by the response time of the meter, since the pointer must move to anew position and be stationary before a dial mark is made. The average dial is printed in less than two minutes. The programmer can be used to produce
electronics

linear or logarithmic scales. Assembly Products is currently
using the new machine to print dials for its Stylist II five-inch meters and its Model 661 six-inch meters. The technique will be extended later to 4,1-inch rectangular meters.
Machine Generates Tape for PC Board Drilling

MASSA RECTILINEAR RECORDERS
are selected for exacting applications

AUTOMATIC machinery for short-run production of complex printed wiring boards has been developed by General Electric Company's HMED, Syracuse, and Edlund Machinery Co., Cortland, N. Y. The automatic equipment consists of two separate units that can be used independently: a drawing-to-tape converter that generates a completely programmed eight-ehannel punched tape directly from adimensionless drawing; and a sixteenspindle, tape-controlled drill press capable of automatically drilling 12 boards simultaneously. The operator generates the punch tape by positioning astylus to ±-0.04 inches of the hole centers on the drawing.
Only the drawing-to-tape converter is shown above; the drilling machine consists of four drilling stations, each equipped with four drill units. The combination machine requires approximately ten minutes from production drawing to completed board.
March 9, 1962

M odel BSA -250 M eterite
Two-Channel Recorder with two M assa plug-in Preamplifiers

IRE Show, Booth Nos. 3601-3603

Quality Control Measurements

The Massa rectilinear writing Meterite two-channel strip chart recorder improves quality control and provides valuable clues for
better production techniques. A typical example is in the manufacture of precision gears, ball bearings, etc., where the unit under test is compared, dynamically, to astandard. Any runout is picked up by
a sensitive transducer and converted to an electrical signal which is amplified by aMassa Carrier Preamplifier (Model PR-401) plugged into the Meterite, Model BSA-250. Direct ink writing permits the recording of continuous production testing to be performed most inexpensively.
The Meterite, equipped with preamplifiers, Model PR-401,
permits recordings of magnitude and profile runouts as low as 20 to 30 microinches. Rectilinear writing produces undistorted waveforms which are identical to those at the transducer output, thereby eliminating the need for complex interpretation techniques.
Massa Division of Cohu Electronics, Inc., manufactures ink or electric rectilinear writing recorders from basic pen motors to complete recording systems with 2, 4, 6, 8, and 12 channels plus a complete line of interchangeable plug-in preamplifiers.
Write for Recorder Technical Bulletins.

MASSA
CIM el S ICD NJ C,F
008-11111
in4C.

275

LINCOLN STREET

HINGHAM . MASSACHUSETTS

OTHER MASSA PRODUCTS

TRANSDUCERS Sonar. Ultrason,c

ACCELEROMETERS MICROPHONES

HYDROPHONES AMPLIFIERS

COMPLETE LINE OF MULTI -CHANNEL AND PORTABLE RECORDING SYSTEMS

Sales representatives in all principal areas Exclusive Export Representative
Milano Bros. 250 W. 57th St., N. Y.

CIRCLE 129 ON READER SERVICE CARD 129

NEW PH ILCO hie TESTER
A new low-cost way to check transistor current gain. Tester is continuously tuned to process 50kc to over 200mc transistors.

METERED CLEAN-UP ETCHING
Philco proved-in-use equipment dispenses metered quantities of highly corrosive etchants, with rapid cycling, low pressure and clean cut-off. Philco equipment, complete with chemical pump, assures critically uniform clean-up etching of all components.

PHILCO DICE SCRIBER
The increasingly popular Philco dice scriber, shown in photo, processes 6001200 semiconductor blanks, or 500-800 strips, per hour--with industry's lowest material waste rate.
New MESA SCRIBER offers fast and precise scribing of new mesa and planar semiconductor blanks. Scribes blanks as small as 0.010". Wafers are held with vacuum instead of wax. Scribing dimensions are programmable with the scriber's solid-state circuit controls.

SEE THESE PRODUCTS AT THE I.R.E. SHOW-ROOM 4242.

130

CIRCLE 130 ON READER ::::RVICE CARD

electronics

NEW PHILCO SPA* Inspects Incoming Transistors Automatically Philco *Single-Position Automatic Tester, shown in photo, enables you to plug-in 10 different parameter tests. Can be programmed to test 10 different transistor types--simultaneously. Protects transistors from outside electrical influences during tests. Contains Philco-designed-and-built solid state comparator.
...REMAREABLE HMCO MACHINES TEAT MAU YOUR PRODUCTS EVEN BETTER

NEW PHILCO SCANNER
Helps control quality automatically. Spots surface variations in metals, in paper -- in any material -- to improve quality and reduce costs.

400°C. HARD-VACUUM OVEN
Industry's finest. Stainless steel muffle. Precise primary and secondary temperature control. Flat profile. Available in 2 sizes: 8" x8" x18" and 13" x14" x20".
NEW LOW-COST 250eC. VACUUM OVEN
Outstanding quality at a budget price. New Philco vacuum bake-out oven features hard vacuum--down to the 10-5 range. Dimensions: 10 3/4" diameter (equivalent to 8" x 8" cross-section), 18" depth.

NEW PHILCO DRYBOXES
Industry's most hermetically reliable dryboxes. Available in your choice of stainless steel or aluminum.
External coupling of units, unobstructed internal working surface and plug-in compatibility with ovens and other equipment--all these Philco features assure industry's highest standard of atmosphere control.

For facts on Philco production and testing equipment, and capabilities for custom equipment, telephone (collect) UL 5-4681 (area code 215). Ask for Mr. E. J. Greenholt. Or write Dept. E3962E.
March 9, 1962

Equipment Development and Manufacturing Operation
PHILCO

A SUBSIDIARY OF <63-:-4o- 7c-o-torWornizeermi,

LANSDALE DIVISION, LANSDALE, PENNSYLVANIA

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131

See us at Booth 4029--IRE Show

Exciting news for our present
NOW ! and future customers.

AFFILIATED

COMPANIES

JOIN

EXPERIENCE

AND FACIl.ITIES

TO

ANNOUNC

ANEW SINGLE SOURCE FOR SEMICONDUCTOR CLAD METALS &PARTS!

FROM MELTING POT TO FINISHED PART IN ONE PLANT!

Now two affiliated companies working under one roof, Leach & Garner Co. and General Findings Inc., combine their specialized skills to produce a vital "single source" service for the semiconductor field. Experience tells you how important this is in terms of faster delivery, better quality, closer tolerances, lower costs and more advanced material development.
LEACH & GARNER ... for Clad Metals
Over 60 years' successful experience has established Leach & Garner as a leader in the production of clad and solid alloys for a wide range of industries. Now a program, carefully developed by unique owner-management, has created a completely new, clean, and separate department where this experience is applied to bonding, rolling and fabrication of clad semiconductor materials.
GENERAL FINDINGS ... for Precision Parts Fabrication Specialized experience through production of countless miniature precision parts for the electronic industry is now combined with the most modern facilities to offer semiconductor manufacturers the service needed to meet the most demanding requirements at low cost with absolute assurance of complete conformity.

CLAD METAL COMBINATIONS NOW AVAILABLE Single or double clad in continuous coils.
· Tin Clad Nickel · Lead--Tin--Antimony Clad Nickel Iron · Tin--Lead Clad Nickel · Tin--Antimony Clad OFHC Copper · Tin--Gallium Clad Nickel
NEW COMBINATIONS BEING DEVELOPED ALMOST DAILY!

To help us service your requests for prices or further information promptly, please include specification drawings of parts, tolerance required, material specifications, quantities and samples.
PLEASE DIRECT YOUR INQUIRIES TO:

Also serving the entire electronics industry with precious and semiprecious clad metals and contact parts.

ALLOYS AND CLAD METALS
LEACH titi GARNER COMPANY ·
ATTLEBORO. MASSACHUSETTS

PRECISION PARTS
GENERAL FINDINGS INC.
ATTLEBORO, MASSACHUSETTS

132

CIRCLE 132 ON READER SERVICE CARD

CIRCLE 133 ON READER SERVICE CARD-->-

MEAN-TIME-BETWEEN-FAILURES: 2,000 HOURS

Accelerated aging eliminates 98% of possible component failures in the new Eitronie digital instruments

Records show that 98% of all component failures occur during the first 100 hours of operation. To assure maximum
reliability in the new Eitronic Series, all instruments undergo an extensive
accelerated aging program equivalent to 100 hours of actual operation. Instruments are placed in aheat chamber and subjected to 125°F. and 90% humidity
while operating under continuously varying voltages. This permits questionable components to be replaced before shipment, resulting in unequalled field reliability. One user with five Eitronic 850, four-digit AC/DC volt-
meters reported a mean-time-betweenfailures of 2000 hours.

Reliability Given Top Design Priority -- Reliability of Eitronic instruments begins with their design. Circuits are conservatively rated to meet the most
exacting operating conditions, including continuous, 24-hour service. Only
costlier, highest quality components are used, and these are carefully selected, aged, and rigorously "pyramid" tested before installation in the circuit. Numerous tests are also made of completed circuit boards and subassemblies. The result of these efforts is a series of all-electronic digital
instruments that is setting a new standard of reliability.
Your EI sales engineer will be pleased

to demonstrate any of the six Eitronic
models for you: DC, AC, DC ratio and resistance measurements, singly or in combination and in 4or 5digit models. Call him today.

Electro Instruments, Inc.
8611 BALBOA AVENUE, SAN DIEGO 11, CALIFORNIA
Engineers: Challenging opportunities now avàilable. Contact Mr. Harvey Fleming.

Straits Tin
Report

IRERpESprH esentiOng W

"THE GOLDEN

In 1961 a statistical short-fall of world production of tin under world consumption took place. Experts believe an actual physical shortage may occur in the 3rd quarter of 1962 because, in part, of production problems in the Congo, Indonesia and Bolivia.
Malaya, by far the world's largest tin producer, believes increased production to be the only sensible long-term answer to shortages. As a result, in 1961 its free-enterprise mining industry set an increased goal for itself and then proceeded to surpass it.
STRAITS TIN PRODUCTION
(long tons)

AGE OF ELECTRONICS"
March 26-29, 1962 The New York Coliseum
... part of the International Convention of the IRE
The Institute of Radio Engineers
1 East 79th Street · New York 21
Members $1.00. Non-members $3.00. Age limit: over 18 CIRCLE 237 ON READER SERVICE CARD

MAGNETIC°

Adve rtise ment.
Unique Relay

MINIATURE
SERVO AMPLIFIERS

Catalog Now Available

1961 production was 1028 tons over the promised increase and 4049 tons above the 1960 total.
This is the type of direct action and cooperation that U.S. industry and government can expect from Malaya's tin miners. Although operating, like American enterprise, on aprofit-seeking basis, they recognize the need for steady market conditions and adequate supplies for consumers over the long term.
Write us today for a free subscription to Tin News--a monthly newsletter containing accurate information on world tin production, prices, marketing developments, and new uses and applications.
Specify Straits Tin--world standard for quality, uniformity and purity
The Malayan Tin Bureau
Dept. T-25C, 2000 K Street, NW., Washington 6, D.C.

TRANSISTOR '`.o oR MAGNETIC

NEW YORK, N. Y. March, 1962. Universal Relay Corp., 42 White St., New York

Call Us/ WITH YOUR REQUIREMENTS

13, N. Y. announces the publication of their latest 52 page catalog. Universal's normal inventory includes over 1,500,-

516 AN 1.4502

000 relays in approximately 30,000 types. In most cases stock is sufficient

Or Write/ FOR STANDARD LISTING

to give immediate delivery of production quantities. This catalog is not just a listing of items available "on order"

c,24"E0 MAGNETIC° INC but it is an indication of in-stock items

(either as complete units or as ready-

.

to-assemble shipment is

components). made within

Average 48 hours.

516 AN 1.4502

Where coils and frames require assembly, or relays require special testing

6 RICHTER CT. E. NORTHPORT, N. Y.

or adjustment, shipments are made

PRODUCTION

within one week to ten days. Universal is completely equipped to

TOROIDAL WINDING

assemble, adjust and thoroughly test any type of relay. A personal interest is taken in every order. This interest is maintained as the order is processed and continues even after the customer

MAC -AMPS ·TRANSFORMERS

receives the merchandise, until he makes sure that it satisfies his needs.

INDUCTORS

All merchandise is guaranteed, subject to customers' inspection and approval

and may be returned within 30 days

FILTER COILS

for replacement or credit. Catalog E-162 may be obtained by writing

DELAY LINE COILS

directly to: UNIVERSAL RELAY CORP.

MAGNETIC°

42 White St., New York 13, N. Y.
New telephone--WA 5-6900

134

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CIRCLE 238 ON READER SERVICE CARD

CIRCLE 268 ON READER SERVICE CARD electronics

New! from
°L1

tit PTC-K18

111 PTC-K5

o

CLEAR GLASS WINDOWS
ri 1 0,0je*`e
THE COMPLETE LINE OF CUSTOM AND STANDARD
Hermetically Sealed Visual Windows

-- FOR OBSERVING INTERNAL CONDITIONS IN HERMETICALLY SEALED ELECTRONIC, ELECTRICAL AND MECHANICAL EQUIPMENT
E-I clear glass windows are manufactured to the same high quality standards that have made ELECTRICAL INDUSTRIES the industrypreferred name in glass-to-metal seals. E-I sealed windows are available in both kovar and compression types. Compression sealed windows are extremely rugged ... meet the test of the most gruelling "space age" environments! For complete information and recommendations on specific applications, just call or write today; detailed data will be supplied to you promptly on request, without obligation.

For All Applications
INDICATOR LIGHT OBSERVANCE METER READING FLOW AND FLUID LEVEL PRESSURE INDICATION GAS-MOISTURE CONTROL VALVES TRANSISTOR PHOTO CAPS PHOTO SENSITIVE DEVICES REFRIGERATION EQUIPMENT AIR CONDITIONERS ENVIRONMENTAL CHAMBERS SPECIAL LABORATORY UNITS, ETC.

ELECTRICAL INDUSTRIES

MURRAY HILL, NEW JERSEY A Division of Philips Electronics & Pharmaceutical.
Industries Corporation.
VISIT BOOTHS 2526-2528 RADIO ENGINEERING SHOW!

SPECIFICATIONS FOR STANDARD CLEAR GLASS, SEALED WINDOWS

THICKNESS

MATCHED SEALS
(KOVAR) .040" to
.200"

COMPRESSION SEALS (STEEL)
090" to 500"

GLASS 0 D

.150" to .300"

From .150" up

Mechanical strength up to 10,000 P.S 1. depending on design and application; various finishes available, as well as special shapes and sizes.

March 9, 1962

CIRCLE 135 ON READER SERVICE CARD

135

This dolphin is talking... and Lockheed is listening!

Yes, Lockheed oceanographers and marine scientists listen to "dolphin talk." Studying acoustical characteristics of underwater creatures is part of their daily work. Unraveling the mysteries of the sea is typical of the many research projects in which they are engaged--projects that constantly create new openings, fresh opportunities. Other fields now
being probed: Internal waves; low-level marine meteorology; marine geology. Moreover, for its own use, Lockheed has adapted and commissioned the deep-sea research vessel Sea Quest--one of the few such ships owned by industry.
Lockheed scientists and engineers are also busy on other projects: One group is absorbed in the improvement of airborne ASW avionics. Geophysicists are concerned with the interaction of ocean, atmosphere and geography. Researchers

are delving into the effect of space plasma on space vehicles. The astrodynamics group is studying physical laws as applied to space travel. Solid state physicists are examining the optical and electrical characteristics of dielectric media.
Scientists and engineers who couple intellectual curiosity with creative ability--who like to brave the unknown and untried--will do well to investigate these opportunities: Servosystems; human engineering; thermodynamics; reliability; structural, mechanical or electrical design; electrical research; electronic systems; program development; dynamics; physics research; electronic research; physical and biochemistry. Write today to Mr. E. W. Des Lauriers, Manager Professional Placement Staff, Dept. 1503, 2408 N. Hollywood Way, Burbank, California. An equal opportunity employer.

LOCKHEED CALIFORNIA COMPANY
A DIVISION OF LOCKHEED AIRCRAFT CORPORATION

'136

electronics

another first from Electronic Measurements
NEW "PV" Series Power Supplies

tsmitr, sPECIFICATIONS

DC OUTPUT

BASIC MODEL
NO.

VOLTS AMPERES

PV32-5 0-32

0-5

PV32-10 0-32

0-10

PV32-15 0-32

0-15

PV32-30 0-32

0-30

PV36-5 0-36

0-5

PV36-10 0-36

0-10

PV36-15 0-36

0-15

PV36-30 0-36

0-30

PV60-2.5 0-60

0-2.5

PV60-5 0-60

0-5

PV60-7.5 0-60

0-7.5

PV60-15 0-60

0-15

DIMENSIONS IN INCHES

PANEL PANEL HEIGHT WIDTH

DEPTH BEHIND PANEL

3%

19

17 1/ 4

5%

19

16%

7

19

15%

8%

19

16%

3%

19

17%

5%

19

16%

7

19

157A6

8%

19

16%

3%

19

17%

5%

19

16%

7

19

15%

8ai

19

16'i

· 0.01% or 2 millivolts regulation · All solid-state with SCR input · Programmable over the entire voltage and
current range · Long-line remote sensing · Continuously variable current limiting · Slaved series or parallel operation · Up to 44% reduction in panel height

IRE BOOTHS 2410-11
March 9, 1962

request specification sheet 2020

El-.1E -r"FtONIC

IVIEASUREIVIENITS

COMPANY

0 F

RED

EATONTOWN · NEW JERSEY

BANK

CIRCLE 137 ON READER SERVICE CARD

137

get the shortest etching time with

R. C. E. SOLUTION
(RAPID CIRCUIT ETCH)
60 POU5,55

Hunt Etchants

Whenever Hunt Etchants are used production rates jump -- rejections are negligible.
HUNT R. C. E. (Rapid Circuit Etch) is a fast acting, specially balanced etchant for printed circuit board production. HUNT S. C. E. (Solder Circuit Etch) is the only prepared product formulated to etch solder-plated boards at room temperature without attacking the solder.
Send for R. C. E. Technical Bulletin 1& 1A S. C. E. Technical Bulletin 3
PHILIP A. HUNT COMPANY
Palisades Park. N. J. · Branches in Principal Cities PHILIP A. HUNT COMPANY (CANADA) LTD., TORONTO
HUNT

S. C. E.
SOLUTION
(SOLDER CIRCUIT ETCH)
55 POVND5

IRE SHOW

presenting
"THE GOLDEN
AGE OF ELECTRONICS 1P
March 26-29, 1962 The New York Coliseum
... part of the
International Convention of the IRE

The Institute of Radio Engineers
1 East 79th Street · New York 21
Members $1.00. Non-members $3.00. Age limit: over 18

138

CIRCLE 138 ON READER SERVICE CARD

CIRCLE 239 ON READER SERVICE CARD
U_STRY FINDS COLORADO1
·Companies "prospecting for plant sites"...find rich new benefits in Colorado. Pleasant Living, aproduct of Colorado's magic climate attracts and holds the most competent personnel. Industry's westward migration has made Colorado the transportation hub serving the vast new markets west of the Mississippi. "Site-see" Colorado now...right at
your desk.

SEND FOR FREE EXECUTIVE PORTFOLIO "INDUSTRIAL COLORADO." Newly completed 9-booklet portfolio on Colorado's industrial sites, assets, opportunities and weekend vacation wonderland. All inquiries held confidential.
COLORADO

DEPARTMENT OF DEVELOPMENT

70 State Capitol

Denver 2, Colorado

CIRCLE 260 ON READER SERVICE CARD
electronics

Faster, surer single sideband communications at vital Atlas, Titan, Minuteman missile sites

The United States Air Force is now taking delivery of SC-900 Series fully automatic 1KW single sideband transceivers developed and manufactured by General Dynamics/Electronics. This equipment will be installed at ATLAS, TITAN and MINUTEMAN missile sites and represents, in the truest sense, a real step ahead
in the state of the art of communications. All tuning of the new General Dynamics/Electronics single sideband equipment is digital IM The use of broadband
techniques rather than aservo system results in faster tuning, simplicity and increased reliability II Emphasis
on linearity, wide dynamic range and selectivity in the receiver RF circuits reduces interference from any

nearby communications equipment to an absolute minimum II Self-containeel noise blanker eliminates interference from pulse type noise without the need for a separate noise sensing antenna II Functional modular construction offers the maximum in ease of maintenance II And in addition to all of these operating advantages, General Dynamics/ Electronics single sideband equipment is extremely compact, ideal for a wide range of portable and stationary communications applications.
For SC-900 brochure. write: General Dynamics/Electronics, 1400 N. Goodman St.,
Rochester 1, New York

GIIIIIIIID

GENERAL DYNAMICS

ELECTRONICS -RDCHESTER
CIRCLE 139 ON READER SERVICE CARD

PRODUCT NEWS from EPL

Low cost, reliable

DC POWER SUPPLIES
for low voltage applications

Variable output ... low ripple ... guaranteed performance... built to withstand 24-hour-a-day operation
Recognized best in their price class

Model

Voltage Amperage Regulation Maximum

Output

Output

(V/A)

Ripple (%)

GFA PS-5 PS-5R NFB NFBR NB EFB
EFBR
EB
EF
PS-3
PS-2
KPS-2 (kit)
0-612T
HEC-2
EC-1

0-125
0-55 0-55 0-32 0-32 0-32 0-32 0-16 0-32 0-16
0-32 0-16 0-28 0-14 0-15 15-25 0-20 0-16 0-20 0-16 0-16 0-8 I 0-16
12** 6** 12**

0-10
0-10 0-10 0-15 0-15 0-15 0-4 0-8 0-4 0-8 0-4 0-8 0-5 0-5 0-200MA 0-100MA
0-75MA 0-5A 0-75MA 0-5A 0-10 0-10 0-5 0-10 0-20
0-5

1.6 to 10A* 0.8 (0-10A) 0.8 (0-10A) 0.3 (0-15A) 0.3 (0-15A) 0.3 (0-15A) 1.25 (0-4A) 1 (0-8A) 1.25 (0-4A) 1 (0-8A) 1.25 (0-4A) 1 (0-8A) 0.9 (1-5A) 0.6 (1-5A)
100MV
1.6
1.6
.44 (3-10A) .3 (3-10A) 1.8 .23 (3-10A) .15 (3-20A) 1.4

1 0.5 0.5 0.75 0.75 5 0.1
0.1
5
1
1MV
0.15 0.5 0.15 0.5
20.5rcee105AA,
0.5 5
0.5

*12% of no-load voltage 61) max. output *" adjustable

Meters

P(rniect)e

0-150V, 0-20A $575.00

0-75V, 0-10A

250.00

0-75V, 0-10A

275.00

0-50V, 0-25A

250.00

0-50V, 0-25A

275.00

0-50V, 0-25A

225.00

0-40/20V, 0-10A 140.00

0-40/20V, 0-10A 160.00

0-40/20V, 0-10A 115.00

0-50V, 0-6A

98.00

0-25V/100MA/ 200MA 0-20V, 0-10A & 0-75MA 0-20V, 0-10A & 0-75MA 0-20V, 0-10A

79.50 56.00 44.95 59.95

0-20V/10A 0-20V, 0-30A

39.95 86.00

29.95

Complete Line Bulletin P5-561 gives all details Stocked at Your Electronic Distributor

ELECTRO PRODUCTS LABORATORIES

4501-F Ravenswood, Chicago 40, M.

2124

LOngbeach 1-1707

Co

Atlas Radio Ltd., Toronto

Since 1936 ... Pioneers in DC Power Supplies · Proximity Switches Magnetic Pickups · Prescon Controls · Dynamic Micrometers

140

CIRCLE 140 ON READER SERVICE CARD

HEAT RESISTANT.;

TEFLON-COATED
FIBERGLAS TAPES withstand temperatures up to 600° in 1 /4 "and 1 /4 "widths
NYLON or DACRON FLAT BRAIDED LACING TAPES AND CORDS
Also specially processed for stability under high heats. Fungus-proof...ties faster, easier, tighter ... knots won't slip. Available wax-coated, wax-free or with G. E. Finish.
Write for full information and free samples!
THE HEMINWAY& BARTLETT MEG. CO.
Electronics Division: 500 Fifth Avenue, New York 36 CIRCLE 240 ON READER SERVICE CARD
PRECISION ELECTRONIC
APPARATUS

Pulse Units max. Freq. 1, 1 Mc/s Oscillator, Binary and Decade Units

· Frequency Meters O R.P.M. Indicators

Time Interval Meter. Resolution n: 1 its

o Pulse Counters

· Quartz Clocks

O Marine Chronometers

`à Quartz and Quartz Filters

o Pulse and Logic Modules

IRE Show Booth 3022, New York
EBAUCHES SA

Oscilloquartz Department EBAUCHES S.A. c/o Room 1105

Neuchatel Switzerland

730 Fifth Ave., New York 19, N. Y.

CIRCLE 269 ON READER SERVICE CARD electronics

Opportunities for:
Aerospace Vehicles Engineers
The Aerospace Vehicles Laboratory of the Space Systems Division has openings for nearly one hundred engineers who have experience in stress, structures, propulsion, mechanisms, control systems, equipment installation or heat transfer which can be applied to advanced aerospace weapons systems or vehicles. The Aerospace Laboratory is concerned, as a result of SURVEYOR and other contracts, with lunar and space exploration, air to air missiles and ICBM defense systems. The openings are for both junior and senior mechanical engineers, electronic engineers, physicists and aeronautical engineers. Some of the openings are described below:

Structures
Senior Dynamicist. Must be capable of performing advanced analysis in structural mechanics. Will be required to calculate response of complex elastic systems to various dynamic inputs including random excitation. Must be capable of original work in developing advanced analytical techniques.
Loads Analyst. To establish structural design criteria for advanced missiles and spacecraft. Should be capable of determining external airload and inertial force distributions.
Reliability Analyst. To perform statistical analysis of structural loads and strength properties for the purpose of establishing structural reliability criteria on a probability basis.
Stress Analyst. To perform advanced stress analysis of complex and redundant missile and spacecraft structures. Will be required to solve special problems in elasticity, plasticity, short time creep and structural stability.
Design. Experience is required in preliminary and final structural engineering and design, including preliminary stress analysis. A knowledge of the effects of extreme temperature environ-

ment and hard vacuum, plus a background in materials is desired.
Heat Transfer
Space Vehicle Heat Transfer. Basic knowledge of radiation conduction and convection heat transfer with application to thermal control of space vehicles is required. Knowledge of spectrally-selective radiation coating, super-insulations and thermal vacuum testing is of particular value.
Aerothermodynamicist. Experience in hypersonic real gas dynamics, heat transfer, abalation; re-entry vehicle design, detection; shock layer, wake and rocket exhaust ionization; and anti-missile system requirements will be most useful.
Equipment Installation
Packaging and Installation Engineer. To perform optimum packaging and installation design for missile and or spacecraft units, considering amount and geometric shape of space available as well as weight and center of gravity distribution requirements. Must be capable of analyzing structural adequacy of unit under extreme environmental conditions.

Controls
Optical Devices. Design, development, procurement and test operations are involved. Considerable experience in the field of optical devices for space applications such as star, horizon, sun and moon trackers.
System Test. To plan and supervise the operations of aflight control system laboratory. Air bear-
ing tables and a wide variety of
optical mechanical and electrical equipment are involved.
Control System Analysis. Requires engineers at various levels of experience including senior men capable of taking over-all project responsibility in the synthesis and analysis of control systems,
Circuit Design and Development. Experience in design and development of transistorized control system circuits, including various types of electronic switching and modulation techniques is required.
If you are a graduate mechanical engineer, electronic engineer, physicist or aeronautical engineer, with experience applicabre to the above openings, please airmail your resume to: Dr. F. P. Adler, Manager, Space Systems Division, Hughes Aircraft Company, 11940 W. Jefferson Blvd., Culver City 71, California.

WE PROMISE YOU A REPLY WITHIN ONE WEEK
An equal opportunity employer.

...orld with Electronics
' HUGHES

March 9, 1962

HUGHES AIRCRAFT COMPANY
SPACE SYSTEMS DIVISION

141

NEW BETTER-THAN-EVER
RELIABILITY
for long-distance point-to-point communications

ORTHERN RADIO

NEW 16-CHANNEL TRANSISTORIZED VOICE FREQUENCY DIVERSITY CARRIER TELEGRAPH TERMINAL TYPE 235 MODEL 3
MIL DESIGNATION AN/FGC-61A

...All units militarized: components and design approved by U.S. Military.

...Converters have equalized gain and adjustable time delay in each channel for better diversity performance and interchangeability.

...Switching Panels provide "local" or "remote" selection of 2-channel or 4-channel diversity modes.

...Combiners have adjustable gains in each channel, for complete switching flexibility, and the combining follows an ideally modified square law function for both 2-channel space or frequency and 4-channel space plus frequency diversity.

...Keyers have adjustable "threshold" sensitivity control and simplified input circuit selection.

... Dotter and Delay Indicator provides test signal source for keyers and delay equalizers channels.

keying in all

Write for complete literature.

Pace-Setters in Quality Communication Equipment.
'NonYllgeW RADIO COMPARY, inc. 147 WEST 22nd SINEW YORK 11, NEW YORK In Canada: Northern Radio Mfg. Co, Ltd. 195g Bank St., Billings Bridge, Ottowo, Ontario.
CIRCLE 241 ON READER SERVICE CARD

PUTS THE BEST IN CREATIVE ELECTRONICS
INTO YOUR HANDS

How To Get Things Done Better And Faste

gePRIM STA ANR DAY RDS
INSTRUMENT COMPANY
ANDALUSIA, PA.

N.B.S. TYPE 1 TO 100K1?
005%

REICHSANSTALT
1 TO .001 e
± .C1%

E-2506 DIRECT READING RATIO SET LIMIT OF ERROR, 2 PARTS PER MILLION

E-1656 VARIABLE LOW RES. STD LIMIT OF ERROR, 2 MICROHMS TO .005
OHMS .04% ABOVE .005 OHMS E-1655B VARIABLE DOUBLE RATIO BOX ACCURACY OF RATIOS, .015%

E-1003 MUELLER BRIDGE FOR RESISTANCE THERMOMETRY ACCURACY .015% OR .00005 OHM
WHICHEVER IS GREATER

Send tor
FREE Catalog

BOAROMASTER VISUAL CONTROL
- Gives Graphic Picture--Saves Time, Saves
Money, Prevents Errors · Simple to operate--Type or Write on

28 pages of professional elec-
tronic equipment in kit and wired
form--for Lab ...Line ...Home

EICO, 3300 N. Blvd., L.I.C. 1, N. Y.

E-3A

D Send free 32.page catalog & dealer's name.

Send new 36-page Guidebook to HI-FI for

which Ienclose 25e for postage &handling.

Name
Address City

Zone

State

3300 N. Blvd., L.I.C. 1, N. Y.
Export Dept., Roburn Agencies 431 Greenwich St., N. Y. 13, N. Y.

See us at IRE Booth #3701

Cards, Snap in Grooves
· Ideal for Production, Traffic, Inventory
Scheduling, Sales, Etc.  Made of Metal. Compact and Attractive.
Over 500,000 in Use
Full price $4950 with cards
FREE 24-PAGE BOOKLET NO. C-30 Without Obligation
W ite for Your Copy Today
GRAPHIC SYSTEMS YANCEYVILLE, NORTH CAROLINA

CIRCLE 261 ON READER SERVICE CARD

142

CIRCLE 142 ON READER SERVICE CARD

E-2582 SYNCHRO BRIDGE ACCURACY 2 SEC. OFARC. ALSO RESOLVER BRIDGES 21/2,5, 10 AND 15 MIN. INTERVALS
SEND FOR OUR CATALOG
GRAY INSTRUMENT COMPANY 448 MILL ROAD ANDALUSIA, PA.
CIRCLE 243 ON READER SERVICE CARD electronics

A

N

N

U

N

N

G

AIR FRAME

FC.400.1 211V DC 4 PDT ·10 AMP
Type FC-400
115v AC and 28v DC contacts rated 10 amperes.
Coils for 28v DC or 115v, 400 cycles AC.
Solder hook terminals standard, others available.

4-pole DT balanced armature type for reliable space age circuit control
This newest addition to Struthers-Dunn's rapidly growing line of relays for critical missile and aircraft uses is made and tested to meet MS-25271-D1 and Al requirements in accordance with MIL-R-6106C.
The ultimate in contact reliability is obtained by strict quality control; by manufacture in ultra clean, contamination-free surroundings; and by comprehensive production testing.
Modifications designed for electronic and communications equipment as outlined under MIL-R-5757D can be supplied. Write for Bulletin FC-400 to: Struthers-Dunn, Inc., Pitman, N. J., U.S.A.

STRUTHERS-DUNN
ANOTHER NOTABLE NEW PRODUCT BY THE MAKERS OF THE WORLD'S LARGEST ASSORTMENT OF RELAY TYPES.
Member, National Association of Relay Manufacturers

Sales Engineering Offices in: Atlanta · Boston · Buffalo · Charlotte · Chicago · Cincinnati · Cleveland · Dallas Dayton · Denver · Detroit · High Point · Kansas City · Los Angeles · Montreal · New York · Orlando · Pittsburgh
St. Louis · San Diego · San Mateo · Seattle · Toronto. (Export Department: 1505 Race St., Philadelphia 2, Pa., U.S.A.)

March 9, 1962

CIRCLE 143 ON READER SERVICE CARD

143

NEW PRODUCTS

,s Niv e xs, e
re i · 4.eV

SPECIAL
DESIGN AND APPLICATION

INPUT 46.58166 MC
BEAT DET

46 DIAL 46.58166

A OSC

MIXER

DIAL 58 OSC

.28 MC

DIAL 1.66 301.66KC

(1.« MIXER Li PHASE '`\...\j..

C i OSC

46.58166

BEAT AMPL

HARM. SEL

OUT

IMC

MC
FRED STD

.-5.5B166 -
5-6 MC FILTER
10 KC

PHASE DET

REACT

Frequency Meter lo KC TO 3,000 MC
LAVOIE Laboratories, Inc., Morganville, New Jersey has recently announced their vhf frequency meter LA-70B that can be used between 10 Kc and 3,000 Mc with an accuracy of 0.001 percent between 20 and 3,000 Mc. It can also generate frequencies to 3,000 Mc with a stability of 0.001 percent with a resetability of 0.000025 percent. Internal 400 cps modulation is provided. Measured or generated frequency is provided by in-line readout of three dials reading in

megacycles, hundreds and tens of kilocycles, and cycles. The block diagram shows this device used in the frequency-measuring mode, with an incoming frequency of 46.58166 Mc being measured. When the device is used as frequency generator, the dials are set to the desired frequency and a switch modifies the audio beat amplifier to provide 400 cps modulation if desired.
CIRCLE 401 ON READER SERVICE CARD

system with incandescent lamps.
It has a maximum frequency of 220 Kc, sensitivity better than 1 v, display time adjustable from 0.5 to 5 seconds approximately, counting interval of 0.1, 1, 10 sec, or manual and a time base accuracy of 0.001 percent. This device
uses a ring-of-ten counting system instead of the scale-of-ten derived from a scale-of-sixteen with feedback previously used. Although
such ring circuits require ten binary flip-flops instead of four, the design is simpler and economical.
Since the count proceeds around the ring, one flip-flop at a time, there is no time lost in feedback operations thus reducing delay. There is also no need to interlock d-c levels to maintain adequate margins for reliability. The sketch shows that each DCU consists of a ring of ten bistable circuits, each capable of driving its associated incandescent indicator lamp. In the sketch, the zero set system is shown as aswitch. When opened,
it returns the clear buss to --20 y causing all left-hand transistors to saturate and turning >1 through 9 lamp drivers off. Input transistor Q, will lose forward bias. desaturate, and permit Q,, to go on thus turning the 0 lamp on. In practice a fast transistor is used to accomplish this zero setting.
CIRCLE 402 ON READER SERVICE CARD

UNI OSC

A LEVEL
SENSE

MERC RELAY

Digital Frequency Meter
USES RING-OF-TEN COUNTER

RECENTLY introduced by General Radio Co., 22 Baker Ave., West
Concord, Massachusetts, is the type

1150-A digital frequency meter, ageneral purpose transistor digital
counter using an in-line readout

FRED ADJ

DUTY CYCLE ADJ

Variable Pulser
TO 10 KC PER MINUTE

CONTROL Indicating Corp., 107 Turnpike Road, Windsor Locks, Connecticut announces and, is showing their solid state, variablefrequency pulser models VFP-100-A

144

electronics

YES...IT'S

actual size

THE TINIEST

TRIMMER CAPACITOR

MADE!

If you are designing for missile environments or applications requiring more capacity in less space, look in to the Pin-Trim. It provides a practicable solution to the challenge of end-product miniaturization with high operational stability.
The new Pin-Trim delivers: (1) more capacitance per cubic centimeter than any other conventional piston trimmer; (2) 75 per cent less weight and 50 per cent less volume than JFD's own miniature trimmers; (3) greater sensitivity; (4) finer adjustment.
If you are looking for maximum compactness between stacked circuit boards, or less stray capacitance in a given area, check the JFD Pin-Trim
specifications for your subminiature trimmer
applications.

jr0 pin-trim
· Overall diameter: 1 8 inch. Overall length above panel: 3/8 inch to 1inch.
· Double the sensitivity of JFD standard trimmers. Special adjust mechanism provides 102 turns per inch for extra fine adjustment.
· Increased maximum to minimum capacitance ratio per unit (minimum: 0.5 pf.).
· Operating temperature --55 to +125C. · Low temperature coefficient of capacitance. · Anti-backlash design for precise tuning resolution. · Low inductance for high frequency use.
· Ultra linear tuning assures accurate alignment--absolute repeatability. Standard slotted end for screwdriver adjustment.
· Rugged shock and vibration resistance. · 500 V. DC working voltage. · 10° megohms insulation resistance.
· Q factor of 500 (measured as per JFD =5178). · 0.5 inch ounce tuning torque. · Meet or exceed applicable performance requirements of
M IL-C-14409A.

For further data, call your local JFD Field office or your JFD franchised Industrial Distributor.

Model-
PT901 PT902 PT903 PT904

Capacitance Range MMF
Measured Per JFD 51 77

Min

Max.

0.5

2.0

0.5

3.0

0.5

5.0

0.5

7.0

D.C. Working
Volts
500 500 500 500

Dielectric Strength Measured For 5 Seconds at 50% R.H. at Max. Rated Cap.
1000
1000 1000
1000

JFD Adjustment Tool No 5284 (Illustrated) available at 85¢ .

Insulation Resistance Measured After One Minute at 500V. D.C. and 50% R.H.
10" Megohms 10" Megohms 10" Megohms 10° Megohms

Factor Measured
Per JFD 51 78
500 500 500 500

unit Weight IT rams
0.62 0.64 0.79 0.94

Dimen.-- Max. ·.1

ese units are also available in the same capacitance values for printed circuit boards in models PT911, PT912, PT913 and PT914.

** Length front of panel.

U.S. Patent No: 2,922,093 Canadian Patent No: '&04,810

JFD ELECTRONICS CORPORATION
Components Division · 6101 16th Avenue, Brooklyn, New York · Phone DEwey 1-1000 · TWX-NY2504 0

JFD WESTERN P. 0. Box 3416 Van Nuys. Calif. Phone: EMoire 4-4131

JFD MIDWESTERN P. 0. Box 588 Skokie, Illinois Phone: 675-1140

1FD NORTHEASTERN Ruth Drive, P. 0. Box 228
Marlboro, Mass.
Phone: HUntley 5-7311

JFD CANADA 51 McCormack Street Toronto, Ontario, Canada
Phone: ROger 9-1129

VARIABLE: TRIMMER PISTON CAPACITORS · FIXED METALIZED INDUCTORS · LC TUNERS · DIPLEXEPS FIXED AND VARIABLE. DISTRIBUTED AND LUMPED CONSTANT DELAY LINES · PULSE FORMING NETWORKS
BE SURE TO VISIT JFD BOOTH NO. 1226 AT THE IRE SHOW MARCH 26-29, 1962

March 9, 1962

CIRCLE 145 ON READER SERVICE CARD

145

and -B. The frequency can be made adjustable between 1 and
10,000 cycles per minute with the
duty cycle variable between 10 and 90 percent. There is no interaction between duty cycle and frequency. The output relay is a mercurywetted type single-pole, singlethrow contacts rated at better than
a billion operations. The sketch shows operation of this device. It consists of a unijunction variablefrequency oscillator, a voltage level

sensor and amplifier and the mercury-wetted relay. The voltage de-
tector senses the level of the sawtooth generated by the oscillator,
without loading the oscillator. The switching circuit does not go into conduction until the voltage level determined by the duty cycle control is exceeding. The square-wave output is amplified to drive the
relay.
CIRCLE 403 ON READER SERVICE CARD

--25V IN
+26V

--3V

Cl
RISE AND

3V

FALL

CONTROL

OV

+4V

-.725V

\VS %

--

--

``

\\

Pulse Generator
VARIABLE RISE AND FALL TIMES

RESE Engineering, Inc., A and Courtland Streets, Philadelphia 20,

Pennsylvania, announce their model 203 pulse generator. This general-

purpose, solid-state device gener-
ates pulses between 30 pps to 3 Mc from an internal clock and 0
pps to 3 Mc from an external trigger. The output pulse may be delayed from 50 nsec to 1,000 µsec with the pulse width continuously variable between 50 ns and 1,000
µsecs. The rise and fall times of the output pulses can be varied between 20 nsec and 2 µsec. As
shown in the sketch, with no pulse
input to transistor Q,, the transistor normally conducts through diode D, to keep the collector at approximately zero volts. The 0.2 1.4.sec input pulse cuts off Q, and the
current flowing through R, and R, starts to charge variable capacitor
C, until the voltage reaches --3 IT and is then clamped by a diode. Since the change in charging cur-
rent from --25 y to --22 y is not very great, R1 and R, constitute a constant-current source and the charge of C, is very linear. By varying the value of Ci,the exponential slope of the capacitor charging curve is shifted, thus

NEW MULTI-PURPOSE ,N\

146

....,,, e, ..;,......, 4 5, .,....?,, .....e'
"1:_, .....,..,,

...`. '.
,Q'3. 00 S, ..., . ,...

40,

C.1.<te

eek -

electronics

changing the rise and fall time of the output pulse.
CIRCLE 404 ON READER SERVICE CARD

2MC XTAL

PULSE GEN

I.996MC XTAL

TEST JIG

SAMPLER

PULSE GEN

LIMIT SET

LINEAR AMPL

COMPUTER

GO NO-GO COMP

CRO

TIME MARKER

READOUT

TIME READOUT

METER READOUT

Diode Recovery Time Tester
AUTOMATIC 2 MC TESTS
WILTRON Company, 717 Loma Verde Avenue, Palo Alto, California, recently have announced their model

2051 automatic recovery time test set for use in checking fast computer diodes. This self-contained unit automatically measures diode recovery times from 1to 50 nsec, or up to 300 nsec with external pulse source. As the sketch shows, a 2 Mc crystal synchronizes a pulse generator and a 1.996 Mc crystal syn-
chronizes a strobe sampling pulser. The small frequency difference provides a time conversion of 5,000:1. After the sampling gate, the wave-
form is slow and easy to work with. The computer can be programmed for any desired recovery level. At desired level, the computer triggers the time marker generator provid-
ing basis for recovery time readout. A meter reads recovery time directly in nanoseconds. Automatic go/no-go circuits compare meas-
ured time to programmed limit and indicate on red or green light. High
sampling rate makes trace appear
continuous and there is a relative absence of ringing on recovery
waveform. Microwave stripline test jig provides matched impedance to

avoid ringing in most fast-recovery waveforms.
CIRCLE 405 ON READER SERVICE CARD
AMPL METER
Dynamic Beta Tester
3 PERCENT ACCURACY
THE Hickok Electrical Instrument Company, 10514 Dupont Avenue, Cleveland 8, Ohio, recently announced their model 1880 dynamic beta transistor tester. This completely transistorized unit measures a-c beta, cl -c beta and leakage with 3-percent accuracy. Extremely sensitive leakage test is excellent for testing silicon transistors. Special tests include H parameters, input resistance output conductance, gm and V,·, ; ,,. The sketch shows the method of testing leakage. Leakage voltage range is from

GLASS-EPDXY LAMINATE

Engineered by Taylor to meet all NEMA standards and military specifications

A new material, Fireban 1011,
is the first glass-epoxy laminated plastic to meet all known specifications for high mechanical strength and flame retardance with excellent punchability.
Fireban 1011 has a lengthwise flexural strength of 80,000 psi for 1/16 in. sheetand 76,000 for 1/8 in. Crosswise flexural strength is 70,000 and 65,000 psi respectively. It retains over 50% of its strength at 300 F.
Sheets up to 1/16 in. may be cold punched at room temperature without haloing. Other important advantages are low moisture absorption, high chemical resistance, excellent electrical properties even after being subjected to severe humidity conditions.
In flame retardance tests proposed by Underwriters' Laboratories Inc., vertical and horizontal extinguishing time is 5seconds for both 1/16 and
March 9, 1962

1/8 in. sheets. Fireban 1011 has passed even more stringent tests specified by major users of laminates.
Two types of Fireban 1011
are now available: plain sheets and copper-clad sheets with 1, 2, 3, or 5-oz. copper foil on one or both sides. Sheet thicknesses range from .010 to 2 in. and sheet sizes are approximately 36 x 48 in.
Technical data bulletins give
complete information, including physical, mechanical and electrical properties
on both types of Fireban 1011. Write for your copies today. Taylor Fibre Co., Norristown 40, Pa.

-7477flor

IAMMATED PIAJWCS

41/1CA,V/Ife f/BRE

CIRCLE 147 ON READER SERVICE CARD

147

1g62 FEBRUARY les2

1962

MARCH

1862

SMTWTFS -- SMTWTFS

1 2 3-
4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28

12 3
4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31

0 to 100 y in regulated 1-v steps. Seven leakage currents from 0-0.05 µa to 0-25 ma are available. Reverse voltage is applied between the two elements being tested and the current caused by this voltage is measured. On the low current ranges; 0-0.05 µa, 0-0.5 µa, and 0-5 µa, the voltage generated across a resistor is applied to a chopper. The square-wave signal is applied to an amplifier and rectified with a bridge circuit. The amplifier gain without feedback is approximately 10" and approximately 80 db of feedback is used. Output of the bridge activates the meter. The chopper and amplifier are not used on the higher current ranges. In this case, the voltage is applied directly to the meter.
CIRCLE 406 ON READER SERVICE CARD
Wire Insulation
FEATURES TOUGHNESS
W. L. GORE & ASSOCIATES, INC., 555 Paper Mill Road, Newark, Del., announces Milene, a laminated insulation compounded from Mylar polyester film and polyethylene. It is possible to get 534 22-gage thin wall Milene insulated wires in a 1 in. diameter circle. Only 300 22-gage wires with 10 mils of insulation can be put in the same area. UL results on the 100 C cut-through test show that with the 1,000 gram weight, 10 mils of PVC insulation cuts through instantly while 3 mils of Milene lasts over the 1 hr test limit.
CIRCLE 407 ON READER SERVICE CARD

Utica does it again with a special tool-of-the-month designed to meet the
increasingly demanding needs of the electronic industry. The 774-5 1/2 Electronic Pick-up and Wiring Plier features a dowel pin located in the jaws to assure perfect alignment and positive gripping control for looping, twisting
and bending. And the finely tapered nose ... only 1/6" at the tip ... will pick-
up and hold the finest wire used in electronic production work. Covering awide range of wiring applications, this new plier is especially useful in handling delicate work in restricted work areas. The Bauer-type grip release spring and heavy
trr plastisol grips offer ease of handling ... increased production line efficiency.
UTICA TOOLS ·DIVISION OF KELSEY-HAYES COMPANY, UTICA 4, NEW YORK

148

CIRCLE 148 ON READER SERVICE CARD

Vapor Deposition Unit
USES ELECTRON BEAM
MRC MFG. CORP., Orangeburg, N. Y. Model EVD-96 is designed to vapor deposit in high vacuum thin films of high temperature materials such
e'ectronic.s

Q1V 48 VOLT SERIES
COMPACT, TRANSISTORIZED
DC SUPPLIES +0.05% REGULATION
(LINE AND LOAD)

QM miniaturized DC supplies combine excellent regulation and extremely low ripple (less than 1MV RMS) with maximum reliability. These completely transistorized units are ideal for use with semiconductor circuitry.
Rugged QM supplies, recommended for awide variety of "builtin" applications, are designed to resist damage from momentary overloads or output shorts. Intermediate voltages and power levels are available. Consult factory or local representative for complete specifications.

STANDARD RATINGS AND SIZES

Nominal

Watts

2

Nominal Output "Its Amp.
73..04....,O...§s 0.45 46.3 0.32 9.0 0.22 12.0 0.16 16.0 0.13 21.0 0.10 28.0 0.07 36.0 0.06 48.0 0.04

Size
.0 1 1 1 1 1 1 1 1 1

4

8

15

Amp.
1.3 0.9 0.64 0.44
0.32 0.25 0.19 0.14 0.11 0.08

Size Amp.

2

2.6

2

1.8

2

1.28

2

0.88

2

0.64

2

0.50

2

0.38

2

0.28

2

0.22

2

0.16

Size
3 3 3
3
3 3 3 3 3 3

Amp.
5.0 3.5 2.4
1.7
1.25 0.94 0.71 0.53 0.43 0.31

Size
4 4
4 4 4 4 4 4

30
Amp. Size
4.00 3.00
2.56 1.87 1.43 1.07 0.83 0.62

CM em Ln c.n tr, cj, u, cn. .

Size
NO 2 3 4 5

A
31%7 4% 414/36 411/,,, 6%,

B

C

3%,
31/ 21 6 4
4 411/37

5
5 1/ 4 6 61/2 61/e 61y,.

·
a

0 00°°

I

1:.-.....:._------.....,,.t_______S--iC ... .,.....4_A _I

IRE SHOW BOOTHS; 2602-2604

APProl· Weight
3 lbs. 5 lbs. 6 lbs. 7 lbs. 10 lbs.

March 9, 1962

A UNIT OF RAYTHEON COMPANY

RICHARDS AVENUE · SOUTH NORWALK · CONNECTICUT

CIRCLE 149 ON READER SERVICE CARD

149

WRAP-AROUND MAGNETIC SHIELDS
APPLIED IN SECONDS

as tungsten, tantalum and molybdenum and is equally capable of
handling all other metals. With a suitable choice of substrates and masks, resistor, connector and capacitor films can be readily deposited for the production of electronic devices. The electron beam heating source consists of an annular gun and focusing shields. The gun, in conjunction with the cold mold materials holder, helps to retain the bulk properties of the material de-
posited.
CIRCLE 408 ON READER SERVICE CARD

Cuts readily with ordinary scissors. Economical CO-NETIC and NETIC Magnetic Shielding Foils are for any size or shape components. Available
in continuous lengths on rolls up to 15" wide ... for human production line or to fit automated existing reels of your tape serving machinery. Furnished lo final annealed state ready for your operation.

HOW YOU SAVE SPACE, WEIGHT, TIME, MONEY
Minimum weight and displacement shielding designs are possible due to the magnetic shielding effectiveness of Co-Netic and Netic foils ...foils can be supplied FROM .002", even thinner if you desire. Ordinary scissors cut foil easily to exact contour and size required. Foil can be wrapped quickly around hard-to-get-at components, saving valuable time, minimizing tooling costs.
HOW TO INCREASE RELIABILITY
Guard against performance degradation from unpredictable magnetic field conditions to which your equipment may be exposed. Eliminate such failure or erratic performance possibilities with dependable Co-Netic and Netic protection ...assuring performance repeatability for your device over a wider range of
magnetic field conditions. Co-Netic and Netic alloys are not affected significantly by dropping, vibration
or shock. They are characterized by low magnetic retention and do not require periodic annealing. When grounded, they effectively shield electrostatic as well as magnetic fields over awide range of intensities.
Every satellite and virtually all guidance devices increase reliability with Netic and Co-Netic magnetic shielding alloys. Use these highly adaptable foils for saving valuable space, weight, time and money .. .in solving your magnetic shielding problems for military, commercial and laboratory applications.

PHONE YOUR NEAREST SALES OFFICE TODAY:

MERIDEN. CONNECTICUT, BEverly 7-9232
UNION CITY. NEW JERSEY. UNion 4-9577 BALTIMORE. MARYLAND. HOpkins 7-3766 DECATUR. GEORGIA. 378-7516 CORAL GABLES. FLORIDA. Highlands 3.7439 MAITLAND. FLORIDA. Midway 7.7830 ST. PETERSBURG. FLORIDA. WAverly 1-9735
DALLAS. TEXAS. FLeetwood 1-1615

HOUSTON. TEXAS, HOmestead 5-7780 ALBUQUERQUE, NEW MEXICO. AMherst 8-6791 PHOENIX. ARIZONA. AMhurst 4-4934 SAN DIEGO. CALIFORNIA. BRowning 8-6230 LOS ANGELES. CALIFORNIA. WEbster 1-1041 PALO ALTO. CALIFORNIA, DAvenport 1-5064
SEATTLE. WASHINGTON. EA 3-8545 MONTREAL. QUEBEC. WEllington 74167

MAGNETIC SHIELD DIVISION

Perfection Mica Company / EVerglade 4-2 -122 1322 N. ELSTON AVENUE, CHICAGO 22, ILLINOIS ORIGINATORS OF PERMANENTLY EFFEC TIVE NETIC CO-NETIC MAGNETIC SHIELDING

150

CIRCLE 150 ON READER SERVICE CARD

Precision Parts
PLASTIC MOLDED GRIES REPRODUCER CORP., 400 Beechwood Ave., New Rochelle, N. Y. Each of the tiny parts illustrated was molded by the company in th engineering thermoplastic that best fulfilled the application specifications. For example, Delrin was chosen for its rigidity, Cycolac for high impact strength, and Kel-F 81 for high heat resistance and zero water absorption. Specifications for GRC plastic moldings are: maximum size and weight--fl in., 0.05 oz; no minimum size.
CIRCLE 409 ON READER SERVICE CARD
Pulsed Power Systems
FOR LASER STUDIES
EDGERTON, GERMESHAUSEN & GRIER,
INC., 160 Brookline Ave., Boston 15,
electronics

Mass. Two compact, low-cost pulsed power systems were designed for driving flash tubes for motion
studies, cloud chamber physics, laser stimulation, flash catalysis,
and other applications. Model 530 has an output of 100 w-sec (260 id at 900 NO selectable at 25, 50 and 100 percent full power. Output of
model 531 is 400 w-sec (1,050 ef at 900 y). Input for both is 115 y 60 cycle a-c.
CIRCLE 410 ON READER SERVICE CARD

Itek
Crystal Filters do Wonderful
Things

Precision Pot
ROTARY UNIT HELIPOT DIVISION of Beckman Instruments, Inc., 2500 Fullerton Road, Fullerton, Calif. Model 6200 is a single-turn rotary unit having a Cermet resistance element. Cermet is completely stable in ambients from --55 to +175 C, it is totally impervious to the effects of humidity, and life is estimated conservatively at 3 million turns. Resistance ranges are from 100 ohms to 50,000 ohms, and power ratings to 3 w are handled with ease.
CIRCLE 411 ON READER SERVICE CARD
Connectors, Terminals
& PROGRAM BOARDS SEALECTRO CORP., 139 Hoyt St., Mamaroneck, N. Y. The ConheX
March 9, 1962

Booth 3934 IRE SHOW

A toast to Itek for a wonderful thing ...Itek Crystal Filter 968B, with a near-Gaussian attenuation characteristic makes possible a 10,000 channel receiver! In antenna circuits, this 5 MC Filter opti-
mizes pulse response, minimizes overshoot, and eliminates adjacent channel interference.

Perhaps you don't need a Gaussian crystal filter. But could you use the ingenuity that built one? Could Itek technical leadership help you?
Of course, the world's largest and most complete selection of stock filters is available, too. Choose from more than 3,000 Itek-Hermes designs.

40 30
20
lOy

-12 -0 -8 -6 -4 -2

2

6 8 10 12

FR QUENCY IN KC FROM 5. 00 MC CEN ER REQUENCY

Write for free Brochure "WEESKACFAACP" or, What Every Engineer Should Know About Crystal Filters At A Cocktail Party. You'll enjoy it.

Itek Electro-Products Company
75 CAMBRIDGE PARKWAY, CAMBRIDGE 42, MASS. A DIVISION OF

Itek

CIRCLE 151 ON READER SERVICE CARD

151

new

subminiature r-f connectors feature closed entry design that results in better contact, more efficient power transfer, and greater dependability through elimination of receptacle distortion in use. New Press-Fit terminal designs include aseries of long pigtail lead models that permit a direct conductor path to a component or termination without the
need of a second soldering operation. The cordless Sealectoboard is used as aprogramming, switching,
and central control device.
CIRCLE 412 ON READER SERVICE CARD

phase problemsolvingservice

q)
CP Electronics specialists provide a 4-phase service for electromagnetic component design, engineering and manufacturing. Specialized service in new product development is the key to achieving the full capabilities of your end products or sub-assemblies. Electromagnetic components must be custom-designed and produced to meet your individual specifications. At CP, years of experience in the development of power and audio amplification components have led to close engineering that converts design into high-quality components with specific tolerances. The all-new CP Electronics Research and Development Laboratory at West Lafayette, Indiana stands ready to serve you, as do CP's complete testing and production facilities. For the custom components you require ...for greater depth in new product, new technique engineering ...investigate CP's 4-phase problem-solving serWvriicetesofoonr! actual examples of how CP's 4-phase problem-solving service has worked for others. For example, each year CP's facilities account for large-scale manufacturing of laminated iron-cored transformers and inductors with open, encapsulated or hermetically sealed construction and insulation allowing temperature ratings to 130° C. These are utilized at both power and audio frequencies with versions available for pulse transformer applications where pulse widths are in the microsecond range and PRF in the audio range.

152

CP
CP ELECTRONICS, INC.
(FORMERLY COLUMBUS PROCESS COMPANY. INC.) COLUMBUS, INDIANA · PHONE 812-372-4471 Manufacturers of Electro -Magnetic Components for Audio Amplification ·Telemetering · Radio, TV, HiFi, Stereo · Civilian Broadcast Equipment
· Specialty Power Supplies
CIRCLE 152 ON READER SERVICE CARD

Phase Angle Voltmeter
VERSATILE UNIT GERTSCH PRODUCTS, INC., 3211 S. LaCienega Blvd., Los Angeles 16, Calif. Model PAV-1 combines the capabilities of a standard a-c vtvm, and a phase-sensitive vtvm, into a single unit. Available plug-in units provide operation as a phase angle voltmeter for 1, 2, or 3 different frequencies, variable ±.5 percent. In addition to standard vtvm full scale ranges, a variable attenuator in the instrument allows any voltage from 0.001 to 300 yto be set as full scale deflection.
CIRCLE 413 ON READER SERVICE CARD
Vacuum Coax Relay
SPDT DEVICE JENNINGS RADIO MFG. CORP., P.O. Box 1278, San Jose 8, Calif., announces the RC6 vacuum coax relay. Vacuum dielectric maintains a low unchanging contact resistance and there is no change in electrical characteristics during long periods
electronics

of storage or use. No damage occurs to the contacts if the relay is accidentally switched hot. Also, the vacuum enclosed contacts never require maintenance. Relay employs a newly designed electromagnetic type actuating mechanism. Positive latching is assured with powerful permanent magnets.
CIRCLE 414 ON READER SERVICE CARD
.°. . I une* -1 c
C

e

·

· ee

e

· · 41

·

Oe fb

·

·

· · · · · · ··· · · ·
lb · · · ·

·

·

e

e

·

·

· ·

· ·

·

······:

AIRPAX TRANSISTOR
CHOPPER TYPE 7000

wooefeje ·
Static Inverter System
HIGH POWER RATING
VARO INC., 2201 Walnut St., Garland, Texas. Model 4350 is a modular-constructed 40-Kw static inverter system operating from 200 d-c input. It provides both singlephase and three-phase output power at fixed frequencies of 60 and 400 cps. Smallest module has an output of 1 Kw. System contains 3-Kw, 5-Kw, and 10-Kw inverters. Tt may be used for both ground and shipborne installations. Features: low noise, small size and weight, low magnetic properties, and mlintenance-free operation.
CIRCLE 415 ON READER SERVICE CARD
lor
R-F Coaxial Plugs
FOR MINIATURE CABLES CANNON ELECTRIC CO., 3208 IIumboldt St., Los Angeles 31, Calif. The Crimp-Imp, designed for miniature cables, is installed using crimp

ARPA X 7000

Low noise, high reliability and wide
operating range are achieved in this all new transistor chopper. Welded
circuitry and micro-miniature com-
ponents permit high density packaging and ultra reliability. Complete isolation is obtained between drive and
switching circuits without the use of adrive transformer.

RATINGS

Signal Input Voltage ... ± 7volts DC or peak

Signal Current ... 1ma maximum

Drive Frequency ... 2KC

Drive Voltage ... 5.5 to 10 volts DC, peak pulse or sq. wv.

Temp. Range: --30' Cto +100' Coperating; --55° Cto +125° Cstorage

Noise ... 35 uy RMS

Shock... 100 Gin any plane

Vibration ... 10 -2000 CPS at 20 G

Size ... 0.4 Cubic inch

NOISE vs. FREQUENCY

BANDWIDTH: 20 CPS-1500 CPS DRIVE 6 VOLTS, SQUARE WAVE
TEMPERATURE: 25° C. INPUT AND OUTPUT
IMPEDANCE , 10K OHMS

<i) 50

e ri

30-

z o

c,
cc

20 60

100

400

DRIVE FREQUENCY IN CYCLES

600

1000

C.D.11

PHONE 228-4600
CAMBRIDGE

EALIEcRTRPoNAicks 0

c o

PoR e' -c

TWX CAME MD 545-U

DIVISION · CAMBRIDGE, MARYLAND

March 9, 1962

CIRCLE 153 ON READER SERVICE CARD

153

'JR

METOHM precision resistors in handy protective "pop-out"
package of ten.

techniques for both the cable center conductor and the cable braid. Plugs have matched impedance and exhibit a vswr of not greater than 1.18:1 over a frequency range of
100 Mc to 2 Ge. The internal mating area of the plugs is environmentally sealed when the plugs are mated, and the junction where cable and plug meet is sealed by a rubber boot.
CIRCLE 416 ON READER SERVICE CARD

NOW!

Ward Leonard precision metal

films too!

"METOHMS" OUTDO MIL-R-10509D

Now Ward Leonard offers you the same uncompromising quality, the same super-
lative reliability in a metal-film precision resistor that you've come to know and
expect in Ward Leonard power resistors. Ward Leonard METOHM molded metal-film precision resistors exceed the re-
quirements of MIL-R-10509D, characteristics B, C, and E. Standard METOHM
resistance tolerances are -±1%; tolerances to ±-0.05% on special order. METOHMS exceed wire-wound precision resistors in high-frequency perform-
ance yet are smaller and lighter weight. And, they far excel other types of precision film resistors in low, and controllable, temperature coefficient of resistivity. Moreover, these low TC's apply over the entire range of resistance values. 2 9

METOHM TYPE
WL 60 WL 65 WL 70

MIL EQUIVALENT
RN 60 RN 65 RN 70

RATED WATTS
IA, 1/4 1 / 2

OHMIC VALUES

MIN.

MAX.

30

500K

50

1 meg.

50

1.5 meg.

MAX. VOLTAGE RATING
250 V. 300 V. 350 V.

You'll find full data on METOHM resistors in Ward Leonard Catalog No. 50. Write for your copy and a list of distributors today. Ward Leonard Electric Co., 30 South Street, Mount Vernon, New York.

RESULT-ENGINEERED CONTROLS
WARD LEONARD

ELECTRIC CO MOUNT VERNON

·

NEW YORK

RESISTORS · RHEOSTATS · RELAYS · CONTROLS · DIMMERS
Come visit us at Booth 2231 at the IRE Show.

154

CIRCLE 154 ON READER SERVICE CARD

ri
[(mum] !

g'

TVIKAI. SY. 100I.lt

···

· a&get--,

! ·.,,

Thumbwheel Switches
DIGITAL AND BINARY
CHICAGO DYNAMIC INDUSTRIES, INC.,
1725 Diversey Blvd., Chicago 14, Ill. Line of miniature modular tab type digital (series MTTSD) and binary (series MTTSB 4-bit code) p-c thumbwheel switches are il in. high and mount on 1 in. centers. They can be supplied in 8, 10 or 12 positions and to meet MIL-S-22710. Modular assemblies are available in 1 to 36 switch combinations. Price range $2.90 to $4.95 for digital and $9.30 to $11.95 for binary type depending on quantity.
CIRCLE 417 ON READER SERVICE CARD

Digital Voltmeter
ALL SOLID STATE
EPSCO INC., 275 Massachusetts Ave., Cambridge, Mass., has developed a universal voltmeter-analog to digital converter (VAD). The low-cost high speed, 4-digit digital voltmeter with floating differential input is designed for both high and low speed data conversion requirements. The VAD features 1000 megohm input impedance, 0.01 per-
electronics

cent accuracy, auto polarity, auto ranging, 100 iLsec conversion, a 500
common mode rejection range, and easy to read Nixie display.
CIRCLE 418 ON READER SERVICE CARD
Waveguide Castings
ARWOOD CORP., 321 W. 44th St., New York 36, N. Y., announces premium waveguide castings with 63 rms finish, as well as thin wall and high temperature magnesium castings, and compact heat sink type castings.
CIRCLE 419 ON READER SERVICE CARD

OPTICAL SHAFT POSITION ENCODER
on' muous O Or Pulsed
10 Seconds of Arc
RESOLUTION

Power Tubes
WIDE VARIETY
GENERAL ELECTRIC co., Schenectady 5, N. Y., offers a variety of power tubes including: KU-band twt Z-5184 (top left, without solenoid) with nominal peak power output of more than 1Kw; ZT-7000 hydrogen thyratron (top right )with an average power capability of 100 Kw; ZP-1025 metal-ceramic triode (bottom left) which delivers a typical peak power output of 2 Kw under 0.01 duty cycle at 1,100 Mc; Z-5424 typical voltage-tunable magnetron, a power oscillator with a minimum c-w output of 50 w in the 2.9-3.2 Ge range and efficiency of 50 percent minimum.
CIRCLE 420 ON READER SERVICE CARD
Tape Reader
AND SPOOLER
POTTER INSTRUMENT CO., INC., Sunnyside Blvd., Plainview, N. Y., announces the PTR-50 perforated
March 9, 1962

Type RD17 Digisynr') Encoder 10" diameter x 43/4 " high
1111111111.1»
To take full advantage of the pointing accuracy of today's tracking radars, digital encoders with high resolution and interrogation rates are essential. A typical application of the Wayne-George 17 digit DIGISYN provides continuous digital output to describe target positions with resolution of 10 seconds of arc. DIGISYN encoders are available with linear, sine-cosine and other non-linear functions of rotation. Codes include cyclic binary and binary coded decimal. All electronics including power supply and amplifiers are self-contained plug-in units.

Wayne-George's experience in the design and production of 22 encoder types for awide variety of applications is available to meet your special requirements.
Write for Technical Literature
WAYNE-GEORGE CORPORATION
322 Needham Street, Newton 64, Mass.
iRE Show Booth No. 323,

CIRCLE 155 ON READER SERVICE CARD

155

tape reader and its companion
PTS-50 spooler. Using photoelectric sensing for two-way high-speed read capability, the PTR-50 intro-
duces the Monobrake tape stop system, a device that eliminates tape bounce and buckling at the read
station. The pinch-roller design simplifies alignment. The PTR-50 and PTS-50 combination accommodates tape widths of ià in., ; in.,
or 1 in., with changeover accomplished by repositioning the tape
guide posts.
CIRCLE 421 ON READER SERVICE CARD

Can you use these unique features
of DCS PCM Digital Data Systems?
If you are considering PCM telemetry ground stations or any digital data system, you will be interested to learn what's available from DCS. Designed to the same standards of reliability which have built DCS's reputation in FM analog data systems, DCS digital data systems offer these unique features:
· asignal generator capable of simulating several signal modes and operating conditions
· apulse synchronizer which optimally recovers data in the presence of severe noise and reconstitutes the pulse train
· automatic synchronization under conditions of gross time base perturbations
· provisions for conventional or majority logic for sync recognition
· a digital-to-analog converter featuring thumb-wheel selection of channel to be presented in analog form
These are only afew of the exclusive features of DCS digital data systems. We'd be pleased to assist you in adapting these proved capabilities and equipments to meet your specific requirements. Call your nearest DCS field office, or write us at Dept. E-1-9.

DATA-CONTROL SYSTEMS, INC. Telbruoteetatio« Art Zedeancd
Los Angeles ·Santa Clara ·Wash., D. C. ·Cape Canaveral Home Office: E. Liberty St., Danbury. Conn. ·Pioneer 3-9241

156

CIRCLE 156 ON READER SERVICE CARD

Coil Winding Machine
AUTOMATED LEESONA CORP., 333 Strawberry Field Rd., Warwick, R. I. The No. 116, a rotary unit of from 6 to 12 winder heads, was designed to reduce labor costs while increasing bobbin coil production. It will wind from 400 to 1,000 coils per hr in Awg 16 to 50 and finer. Its individually-powered heads will wind all sizes of coils up to 3 in. in diameter by 2;1 in. in length, and will wind, simultaneously, two or more different coils. Machine will support and wind from 100 lb wire containers.
CIRCLE 422 ON READER SERVICE CARD
Delay Lines
ELECTRICALLY VARIABLE COLUMBIA TECHNICAL CORP., Woodside 77, N. Y. Type 1460 can provide continuously variable delays
electronics

from minus to plus 10 percent of nominal value, with infinite resolution, by varying a d-e potential superimposed on the input signal, without appreciable performance degradation. It is rated 0.2 ¿sec delay at 95 ohm impedance, and displays high fidelity frequency re-
sponse with arollover at 60 Mc.
CIRCLE 423 ON READER SERVICE CARD
Noise Analyzers
QUAN-TECH LABORATORIES, INC., Boonton, N. J., has available model 310 transistor noise analyzer, model 311 low-current transistor noise analyzer, model 315 resistor noise test set, model 303 noise and wave spectrum analyzer and other acces-
sory noise equipment.
CIRCLE 424 ON READER SERVICE CARD

le a

driven

CHOPPERS

hat...

Turns Counting Dial
SIMPLE TO INSTALL VEMALINE PRODUCTS co., Franklin Lakes, N. J. The Vem-A-Dial turns counting dial fits precision potentiometers and other multiturn devices. It is well constructed for long life, low in cost, meets applicable MIL Specs, counts up to 15 revolu-
tions, is calibrated in 100th of a tu rn increments.
CIRCLE 425 ON READER SERVICE CARD
Servo Assembly
IN IN-LINE FORM DAYSTROM, INC. ,Transicoil Division, Worcester, Pa. In-line servo package includes a motor generator coupled through appropriate gearing to a control transformer. Signal in-
March 9, 1962

In portable d-c amplifiers, the advantages of low level operation plus a 94 cycle chopping rate are now available, using a 12, or 24 volt battery as the chopper drive source.
Write for Catalog 554.

In transistorized d-c amplifiers, the use of a d-c driven Chopper instead of the usual a-c drive, removes an additional source of stray a-c signals from the critical chassis wiring. The 94 cycle chopping rate also eliminates the null off-sets resulting from the use of a60 cycle chopping rate.
STEVENS
INCORPORATED
ARNOLD

QUALITY SINCE 1943

· 7ELKINS ST., SOUTH BOSTON 27, MASS.

"Visit us at IRE Show--Booth L=2920"

S/A-20 +/3

CIRCLE 157 ON READER SERVICE CARD

157

put to the device is three wire synchro data applied to the control transformer stator. When the rotor is continuously driven to null in a
feedback loop, the output of the rate generator represents the first derivative of the three wire data. This
computation finds frequent usage in
navigational computers.
CIRCLE 426 ON READER SERVICE CARD

IMADE IT ALL MYSELF!

We have to admire the purism of a hobbyist and the personal satisfaction he gets from doing every part of a job himself. But we know that you, as a professional engineer, don't have time for such luxuries. Your purpose is to get results now. That's why you make some things and buy others.
When it comes to digital circuits, you can't afford to make your own. Why? Because proven EECo digital modules are immediately available ...at prices you can't hope to match by "do-it-yourself" methods.

Write today on your company letterhead for complete technical data
and price information on any of our more than 200 proven catalogued digital circuits.

ENGINEERED ELECTRONICS
Company

ENGINEERED ELECTRONICS Company

1441 EAST CHESTNUT AVENUE · SANTA ANA, CALIFORNIA

KIMBERLY 7-5651

CABLE ADDRESS: ENGELEX

158

CIRCLE 158 ON READER SERVICE CARD

Silicone Resistor
\VIRE WOUND
WARD LEONARD ELECTRIC CO., MOLUlt
Vernon, N. Y. The Syl-Ohm miniature power resistors feature: (1) Low T. C. resistance wire (to 20 ppm/deg C max) uniformly wound on tough miniature ceramic cores. (2) Sturdy axial leads designed for improved solderability. (3) A specially formulated silicone embedding coating for maximum protection against moisture, thermal shock, salt spray and other adverse operating conditions. They are available in 8sizes from 1to 12.5 w.
CIRCLE 427 ON READER SERVICE CARD
Pulse Transformer
PCA ELECTRONICS INC., 16799 Schoenborn St., Sepulveda, Calif., announces availability of a 10 Kv dual purpose pulse transformer.
CIRCLE 428 ON READER SERVICE CARD
Reflex Klystron
RUGGEDIZED
WESTINGHOUSE ELECTRONIC TUBE
DIVISION, BOX 284, Elmira, N. Y. The WL-6781 has an integral cavity. It
electronics

is suited for use as alocal oscillator in airborne radars, and as a lab signal source. Tunable over a 8.5to 10-Gc range by means of a tun-
ing screw, the tube is designed to give high performance at beam voltages as low as 200 v. It has molded leads and a viking 5-pin connector.
CIRCLE 429 ON READER SERVICE CARD

Time-tested Standard of the Resistor Industry!

<>ledge P",,.--- ·

Power Supply Tube
HIGH-PERVEANCE
RAYTHEON co., 55 Chapel St., Newton 58, Mass. High-perveance beam tube features low tube drop and high plate resistance for maximum circuit efficiency. Applications of the CK6216 includes series pass in regulated power supplies, a power switch to drive d-c wire lines, a screen grid clamper to protect Class C beam pentodes, a magnetic control tube, and many others.
CIRCLE 430 ON READER SERVICE CARD

SPECIFICATIONS
Nominal composition 75% Nickel 20% Chromium 2.5% Aluminum 2.5% Copper
Specific resistance 20 °C 800 ohms/cmf 134 microhm cm
Coefficient of linear expansion 20° to 100°C ·
.000014/ 0C
Specific gravity 8.10 gm/cc
Pounds per cubic inch .293
Magnetic attraction None
Average tensile strength 180,000 psi
Thermal conductivity 0.152 W/cm/°C
Mean thermal EME vs copper 0°C to 100 °C
1 gv/°C

RESISTANCE vs TEMPERATURE FOR EVANOHM

-4

70

50

30 -10

10

30

50

70

Temperature in °C

90

110

Specify EVANOHM for exceptional
stability over wide temperature ranges. This WBD precision resistance alloy
provides high specific resistance, low
temperature coefficient and low thermal EMF to copper. It is especially recommended for high reliability applications
... resistors, precision instruments, missiles and critical equipment. Available in bare wire, enameled or insulated.

Controlled Rectifiers
FAST TURN-OFF
INTERNATIONAL RECTIFIER CORP.,
1521 E. Grand Ave., El Segundo, Calif. Three series of scr's are de-
March 9, 1962

FINE WIRE ALLOYS IN A FULL RANGE OF RESISTIVITIES

ALLOY
Evanohmt
Tophet A® Tophet® C Cupron® (Constantan) Balco® Ballast® (Pure Nickel) 30,60,90,180 Alloys

Nominal Composition
75 Ni-20 Cr2.5 Al-2.5 Cu 80 Ni-20 Cr 61 Ni-15 Cr-bal. Fe 55-Cu-45 Ni 70 Ni-30 Fe
99.7 Ni Cu -Ni

Resistivity (ohms/cmf)
800
650 675
294 120
48 30-180

T.C. of Resistance (ohms/ohm,' .C, 20-100'C) -t .000005t
(-65 - to 125' C.) .000085 .00013
- .000020 .0045
.0060
.00130 -.00018

o

Call or write for EVA NOHM brochure to--

Specific Gravity gms/cc
8.10
8.412 8.247 8.90 8.46 8.90 8.90 t.002" and finer

WILBUR B. DRIVER COMPANY
NEWARK 4, NEW JERSEY -- Telephone: HUmboldt 2-5550

In Canada: Canadian Wilbur B. Driver Co., Ltd., 50 Ronson Drive, Rexdale (Toronto)
PRECISION RESISTANCE, ELECTRONIC AND MECHANICAL ALLOYS FOR ALL REQUIREMENTS VISIT OUR EXHIBIT --BOOTHS 4301 -A-4301 -B, I.R.E. SHOW

CIRCLE 159 ON READER SERVICE CARD

159

JENNINGS VACUUM
CAPACITORS

signed for inverters and other d-c switching applications, where a maximum limit on turn-off time provides greater predictability of
rectifying device performance and increased economy in the selection of associated circuit components. Available in current ranges of 1.1 amp. 4.7 amp and 16 amp. All have
peak reverse voltage ranges from 50 through 300 v.
CIRCLE 431 ON READER SERVICE CARD

TO MEET HIGH VOLTAGE CIRCUIT DESIGN PROBLEMS
Of course this unusually large selection didn't just happen overnight. It represents the accumulation of twenty years experience in the manufacture of vacuum capacitors. During this time Jennings has developed exclusive vacuum processing techniques. Examine the representative types shown below, all of them proven successful in thousands of applications.

HIGH VOLTAGE
Type Capacitance Range Peak Voltage RF Current Length

VMMHHC 25 to 200 mmfd
120 kv 125 amps RMS
20% inches

HIGH CURRENT
Type Capacitance Range Peak Voltage RF Current Length

VMMHCW
50 to 400 mmfd 55 kv
500 amps RMS 17 inches

HIGH RATIO OF CAPACITANCE CHANGE

Type
Capacitance Range Peak Voltage RF Current Length

UCSL
7to 1000 mmfd 5kv
42 amps RMS 7-9/16 inches

0111%
41k4r

SMALL SIZE
Type Capacitance Range Peak Voltage RF Current Length

[CS 3to 30 mmfd
15 kv 20 amps RMS
4% inches

Quick Change Holder
WITH GAGING SYSTEM
WALES STRIPPIT INC., South Buell Road, Akron, N. Y., announces the 1.1 in. quick change holder with microbar gaging system for use on the Strippit 15A fabricator. System allows any operator to make back and end gage settings directly to thousandths in a matter of seconds. Features that allow for such fast and accurate gage settings are dial indicator assemblies and microbars which are mounted directly to the holder base and the hack gage bar.
CIRCLE 432 ON READER SERVICE CARD

Our radio frequency laboratory with 12 functioning transmitters ranging
from 17 KC to 600 MC and up to 100 KW CW power is at your service to test our products under your particular circuit conditions.

Write for our special brochure describing our

y complete line of vacuum capacitors.
RELIABILITY MEANS VACUUM/ VACUUM MEANS

Mille 0

JENNINGS RADIO MFG. CORP., 970 McLAUGHLIN AVE., SAN JOSE 8, CALIF., PHONE CYpress 2-4025

Fiber Optic CRT
HIGH RESOLUTION
LITTON INDUSTRIES, Electron Tube Division, 960 Industrial Road, San Carlos, Calif. The E2A16 is a 17'; in. long crt with a 11 in. square face panel composed of a bunched

160

CIRCLE 160 ON READER SERVICE CARD

electronics

array of fiber optic light pipes. The individual light pipes are coated on the vacuum side with phosphor, which is excited by an electron beam emanating from a precision, high
intensity, high definition, electron gun within the tube. A variety of phosphors are available.
CIRCLE 433 ON READER SERVICE CARD

HILL ELECTRONICS
specializing in solving problems of
FREQUENCY CONTROL with emphasis on
RELIABILITY
· · ·

Control Panel
AND BLOWER

MCLEAN

ENGINEERING

LABORA-

TORIES, P.O. Box 228, Princeton,

N. J., announces a full MIL-Spec

blower-control panel combination.

The control panel section includes

airflow indicator pilot lights, cir-

cuit breakers, relay switches and a

fused double outlet. The blower

features two large centrifugal

blower wheels that quietly deliver

800 cfm at slow speed. Blowers

measure 10?; in. high by 19 in. wide

with control panel adding 31, in. to

the height.

CIRCLE 434 ON READER SERVICE CARD

Photoconductive Cells
EXPANDED LINE
CLAIREX CORP., 8 W. 30th St., New York, N. Y., has expanded its line of standard photoconductive cells from 3 to 5 series. The two new series will be produced in hermetically sealed metal packages with
March 9, 1962

Hill designs and produces precision oscillators, crystal and L-C filters to provide optimum reliability within the diverse technical and economic requirements of the customer. Its concentration on frequency control and its unique organization of talents and facilities enable Hill not only to design and manufacture devices which often exceed the state of the art, but those having less exacting requirements where economy is amajor consideration.
Development has been completed on aprimary frequency standard with stability better than 5parts in 10 11 per day. This standard utilizes a5th mode, 21 /2 MC crystal of Hill manufacture. Standards will be available commercially by mid-summer. In conjunction with this ultra-stable, highly reliable standard, Hill has developed comparing and distributing equipment to form acompletely integrated system that generates avery high precision reference signal. This signal is continually phase-compaped against any standard frequency transmission such as NBA or NAA, the deviation is recorded, and provision is made for utilizing either the generated or corrected signal throughout your plant.
For further information concerning this new standard and the complete self-contained frequency reference system, or any frequency control problem, visit BOOTH 1219, I.R.E. Show.
HILL ELECTRONICS, INC.
MECHANICSBURG, PENNSYLVANIA

CIRCLE 161 ON READER SERVICE CARD

161

I25 °C

several types ranging up to a few watts in power dissipation characteristics; the balance of the line will continue to be hermetically
sealed in glass.
CIRCLE 435 ON READER SERVICE CARD

Servo Motors
MINIATURE UNITS
SANGAMO ELECTRIC CO., Springfield, Ill., announces size 5 (0.5 in. dia.) and size 8 (0.75 in. dia.) servo motors available as control motors. motor generators and synchronous motors. They are designed for 400 cps excitation and are enclosed in corrosion-resistant stainless steel cases.
CIRCLE 436 ON READER SERVICE CARD
Tunable Magnetron
METCOM INC., Salem, Mass., announces the MXM-28, a waveguide output 2 Kw X-band tunable magnetron designed to withstand missile-type environmental conditions.
CIRCLE 437 ON READER SERVICE CARD

The Paktron Mytar* MR 330 Capacitor has achange less than 2.5%, 25'C -- 85°C. Temperature range from --55°C to 125°C derating above 85'C to 50% at 125°C. Other features are low dissipation factor, excellent dielectric strength, good insulation and moisture resistance and low cost. For additional information write.
PACKAGED WW1 DIVISION OF-ILLINOIS TOOL WORKS, INC.
AREA CODE 703 Kin

162

CIRCLE 162 ON READER SERVICE CARD

Couplings
PRECISION DEVICES
TECH-OHM ELECTRONICS, INC., 36-11 33rd St., Long Island City 6, N. Y., announces a line of standard stock miniature precision bellows, Oldham and precision sleeve couplings. Line is designed for ground support, computer and servo applications.
CIRCLE 438 ON READER SERVICE CARD
Deviation Bridge INDUSTRIAL INSTRUMENTS, INC., 89
Commerce Road, Cedar Grove, New
electronics

LEADERSHIP

with aforward look in the field of high vacuum equipment ...

Kinney Vacuum, the accepted leader in the manufacture of vacuum pumps is acknowledged foremost in research and development in the high vacuum industry.
This leadership is carefully guarded by constant and extensive research and develop-
ment that produces the ultimate in mechanical pumps, diffusion pumps, valves, baffles, gauges, vacuum furnaces, space chambers, and complete vacuum systems. The resources of the New York Air Brake Company and all of its divisions guarantee every Kinney Vacuum product to be efficient in operation, most modern in design, and
constructed to give the maximum in service. · PROVEN STABILITY · EXTENSIVE RESOURCES · DYNAMIC DEVELOPMENT

HIGH VACUUM PUMPING SYSTEM ...KPW-6 Attractive cabinet design requires less floor space, cabinet and frames are of unitized construction with formica work surface.
Accurate pressure readings on ionization-thermocouple gauge at three positions. New line of components includes high speed oil diffusion pump mated with dual-coolant ultra-high vacuum
drum baffle. These components allow straight through pumping resulting in rapid evacuation to below 1 x 10 -6 torr., ultimate pressure less than 5 x 10 7 torr.

KINNEY VACUUM DIVISION THE NEW YORK AIR BRAKE COMPANY 3529 WASHINGTON STREET · BOSTON 30, MASS.

March 9, 1962

CIRCLE 163 ON READER SERVICE CARD

163

...THIN FILMS

... DOT MODULES

MICROELECTRONICS

·

HEXAGON

HORNET

- is your iron!

Test It!
It's silicone rubber on braided fiberglass

MODEL H10 12 Watts
115 Volts AC-DC

· SMALLEST IRON -- ONLY 57/8" · SMALLEST TIP DIAMETER -- 1/32" · SHORTEST DISTANCE
FROM WORK -- 115/16" · LOWEST WATTAGE -- 12 WATTS · HOT TIP GETS IN AND OUT FAST · NO DAMAGE TO INSULATION · FASTEST WORKING TEMPERATURE
· LIGHTWEIGHT
DUROTHERM Non-Freezing Long-Life Tips 1/32, 1/16", 1/8"
Gets into tight places. Plastic handle, cooled thrU ventilated design and concave stainless steel which reflects heat away from hand.
HEXACON ELECTRIC COMPANY
130 West Clay Avenue, Roselle Park, New Jersey

SERVING

INDUSTRY

AND

CRAFTSMEN FOR OVER THIRTY YEARS
At the I.R.E. Show--Visit HEXAGON Booth 4002 CIRCLE 244 ON READER SERVICE CARD

NEW FROM 7/1

HIGH

SPEED A-D
CONVERTER

oo o

e

-

0 G o G et.

G o e, O 19

'op

o e0. 0

'1.5 u, sec per bit

Automatic Zero Stabilization

Texas Instruments Model 834 Analog-Digital Converter is a versatile, all solid state instrument combining high speed with high accuracy. Basic speed is 25 microseconds per conversion
-_-_- / (40,000 12 bit conversions per second) ;accuracy is 0.05`. of
full scale, 1 4 the least significant bit. The instrument provides full scale ranges of 1,_--2.5, -±5.0, and ±10.0 volts with an input impedance of 200,000 ohms. Modular construction allows modification of output logic levels and digital code to suit various system requirements.
Write for complete information.

APPARATUS DIVISION
PLANTSIN HOuSTON AND DALLAS TEXAS

\__

°

TEX AS iNSTRUMENTS

INCORPORATED

3609 BUFFALO SPEEDWAY

P 0. BOX 66027

HOUSTON 6.TEXAS

47 ,

164

CIRCLE 164 ON READER SERVICE CARD

SR-398

Asuperior silicone rubber compound over fiberglass produces atough and nearly glass-smooth surface for higher abrasion
and cut-through resistance. It is tested to MIL-T-5438 specs. Tensile strength, 1000-1200 psi, yet it expands to slip
over terminals, connections. High dielectric strength (8000v) maintained even after continuous use at rated 210°C. Write, phone, or wire for test samples.

L.FRANK

&SONS

for SOURCE

EXCELLENCE

Insulating Tubings and Sleevings

High Temperature Wire and Cable

NORRISTOWN, PENNSYLVANIA

CIRCLE 245 ON READER SERVICE CARD electronics

Jersey. Model DB-1 deviation I'

bridge can be operated as either a

balanced or unbalanced Wheatstone

bridge for rapid resistance com-

parisons. It has an accuracy of ±-.0.1 percent as a limit bridge and
greater accuracy as a null device. CIRCLE 439 ON READER SERVICE CARD

ONE

e,,,imitt TIML

* 4t
e
Reversing Counter
SOLID-STATE

jjr

BECKMAN INSTRUMENTS, INC., Berkeley Div., 2200 Wright Ave., Richmond 3, Calif. Model 3302/5 reversing dual preset counter can add as well as subtract pulses, and provide automatic output signals at certain preselected limits, while always indicating the true algebraic sum of plus and minus counts. Price is $1,945.
CIRCLE 440 ON READER SERVICE CARD
Paper Tape Punch
COMPACT UNIT
NAVIGATION COMPUTER CORP., Valley Forge Industrial Park, Norristown, Pa. Tape punch verifies the information it punches with printed letters and numbers along one side of the tape. Single compact unit contains a keyboard and the punch itself. It is intended for making up tapes to program digital equipment, such as digitally-controlled machine tools.
CIRCLE 441 ON READER SERVICE CARD

ALL THE FEATURES...
TRADEMAR Kz
Only in aSTANDARD instrument do you get all the features "most wanted" in an interval timer:
UNEXCELLED PRECISION--Consistent, continuous accuracy over years of use. Accuracy to .001 second available in standard models.
INSTANTANEOUS ELECTRIC RESET--A "must" in many instrument complexes--a plus benefit for all other applications.

Wire Dispenser
FREE TURNING ROLLERS
EUBANKS ENGINEERING CO., P. 0. Box 4158, Pasadena, Calif. Model 71 roller wire dispenser provides a

PROVEN MECHANISM--Synchronous motor driven-- electric clutch operated. Proved reliably accurate and dependable by years of service.
CHOICE OF CONTROL--Start, stop and reset can be manual, by electric circuit or output of electronic tubes.
RANGE OF MODELS--Portable or panel mounting--in a wide selection of accuracies and ranges.
Request Catalog No. 198-B

THE

STANDARD ELECTRIC TIME COMPANY
89 LOGAN ST., SPRINGFIELD, MASS.

March 9, 1962

CIRCLE 165 ON READER SERVICE CARO

165

convenient method of handling wire reels during stripping, marking or other processing. A reel of wire is
cradled between two free-turning steel rollers, which may be spaced to accommodate reels from 6 in. to 22 in. in diameter. Dimensions are 24 in. long by 18 in. wide by 4i in.
high. Price is $47.50. CIRCLE 442 ON READER SERVICE CARD

DEPENDABLE SWITCHING

Lapped Ruby Lasers
ADOLF MELLER CO., Providence, R. I., announces lapped ruby lasers with guaranteed flatness and parallelism to 11 sec of arc.
CIRCLE 443 ON READER SERVICE CARD

The advanced design and precision construction of Ainslie antenna systems and associated equipment bear testimony to nearly two decades of microwave communication, detection and identification experience. By virtue of complete design -to- delivery capabilities and facilities, Ainslie Corporation offers its customers not only comprehensive standard lines of mesh, spun and horn antennas, but also the flexibility required to develop custom designed prototypes for onschedule delivery.
See us at the IRE Show--Booth 1620

Klystron Amplifier
FEATURES LONG LIFE
VARIAN ASSOCIATES, 611 Hansen Way, Palo Alto, Calif. Model VA861 klystron amplifier delivers 1Kw at 5.9 to 6.4 Gc. Designed for transportable communication systems and c-w radar applications. Requires no adjustments except tuning. Features long life, simple operation, and reliable performance.
CIRCLE 444 ON READER SERVICE CARD

of contact loads to 25 amps ...
"Diamond H" Series W Relays--The simple, functional construction of this high-quality general-purpose relay assures long-time dependable switching. For a broad range of applications, specifying "Diamond H" Series W Relays makes good sense. Here are some reasons: Reliable--Mechanical life in excess of 10,000,000 cycles. Versatile--a-c or d-c units available with choice of eight different combinations. Compact--Measures lYs x 134 x 174 inches--weighs less than 10 oz. High Contact Rating--Conservatively rated up to 25 amps, 240 y a-c or 28 y d-c. Easy to mount--Plug-in design. Panel or side mounts also available. Underwriters Laboratory Approval -- U/L File 31481. Cost-saving--Low in initial cost, the Series W is easy to install, saves space, and is easy to service. Send for complete facts--in new 8page Series W Relay Guide.

CORPORATION
531 Pond Street Braintree 85, Massachusetts

Quartz Delay Line
VARIABLE
MICROSONICS, INC., Hingham Industrial Center, Hingham, Mass. Continuously adjustable quartz delay lines have stepless adjustment in the range from 5 to 200 ihsec, but

166

CIRCLE 166 ON READER SERVICE CARD

HART
THE
MANUFACTURING COMPANY
202 Bartholomew Avenue, Hartford 1, Conn.
Phone JAckson 5-3491
CIRCLE 246 ON READER SERVICE CARD electronics

CLIFTOM PRECISION OFFERS
SIZ(EEuOiF8) GAUSACYRACNNUTCEHREDARCOSY

Extreme uniformity and thermal stability are maintained in these premium synchros in all electrical characteristics--and especially accuracy.
They are high temperature resistant units and retain their stable characteristics over atemperature range of --55°C to +125°C. Exposure to +150°C is feasible for short periods of time.
These are production line units--not selected. Delivery is in 45 days; prototype quantities immediately.

TYPICAL DISTRIBUTION CURVES ON LOT OF 1200 UNITS
S E
A
o

ERROR IN MINUTES (MAX

S
0 4 8 12 16 20 24 28
TOTAL NULL (MAX. OF EACH UNIT) IN MILLIVOLTS

sTNcno FUNCTION
trque Transmitter intro! Transformer

ELECTRICAL CHARACTERISTICS

cppc TYPE

Ivinpul
silage (OW-)

ROTOR AS PRIMARY

loput Curren) (Amps.)

Input Pent (Wah)

Oulpur Wine (Volts)

. Seuellonty (MV/deo J

Ph,. Stall deg. lead)

HGC.8.A-010

26

120 .66 ILS 206

10.0

HTC-8-A-010

--

--

--

--

--

--

STATOR AS PRIMARY

Input

Input

Input

ollage Cotten) Prover

ISO r. r (Amps I rWatts)

Output Voltage (Volts)

,,, imbed, (MV /One .)

Phase 01111
Mt lend

--

--

--

--

--

--

II 8 .039 .092 22.5 393

10.5

--.-. RESISTANCE

Rolm

Slit.,

Obms) (Ohms)

IMPEDANCE

Fie
(Ms)

/se
(Ohms)

Zoo
(Ohms)

Mos. Null V.Iint (MV)

........ RAC'
Mal F., (Mn

37

1? 46-1-j210 11-H36.5 81.5+1 24

30

5

365 64 00+0420 60-f-j254 590+016

30

5

March 9, 1962

For additional information, call or write our Sales Department, 5050 State Road, Drexel Hill, Pennsylvania, MAdison 2-1000, TWX LNSDWN, PA. 1122(U)--or our Representatives.

CLIFTON PRECISION PRODUCTS CO., INC.
Clifton Heights, Pennsylvania
VISIT OUR HOSPITALITY SUITE during the IRE Convention Barbizon Plaza Hotel, Park Suite East, 3 to 10 PM, New York City, March 26-29, 1962

CIRCLE 167 ON READER SERVICE CARD

167

other areas of delay time are possible with design modifications. Multiple variable outputs can also be obtained, each of them adjustable together or separately. Lines are
normally produced for operation in the range from 20 to 60 µsec with bandwidths from 8 to 20 µsec and spurious signals down to 30 or 50
db.
CIRCLE 445 ON READER SERVICE CARD

YOUR PRODUCTS

NEED

The first public showing of an automatic Gardner-Denver "Wire-Wrap"® machine will be
at the IRE Show March 26 through 29. This machine automates wiring of complicated computer panels--adds new re-
liability to connections -- because they're solderless wrapped connections.

Flag Indicator
MONITORS CIRCUITRY
ELECTRO-MECHANICAL INSTRUMENT CO., Perkasie, Pa., offers model 801 miniature flag indicator to monitor all types of electronic circuitry and to sell in quantity in the low-price range. It has amax power requirement of 1mw, and has wide application on computers, automatic control devices, mon itoring of switch-gear circuits, transistor and relay circuits where reliability of constant circuit monitoring at low power consumption is desirable.
CIRCLE 446 ON READER SERVICE CARD

IRE SHOW

BOOTHS 4524-4526
EQUIPMENT TODAY FOR THE CHALLENGE OF TOMORROW
GARDNE R DE NVER
Gardner-Denver Company, Gardner Expressway, Quincy, Illinois

Oscillator
WIDE RANGE
MARCONI INSTRUMENTS, 111 Cedar Lane, Englewood, N. J. Using a modified Wien Bridge circuit, the company has produced alow distortion RC oscillator, model 1370, which tunes 10 cps to 10 Mc. Out-

168

CIRCLE 168 ON READER SERVICE CARD

PROTECTION
YOU NEED
°gab°
PROTECTIVE COATINGS
There's a HumiSeal Protective Coating for virtually every elec tromc use Write today for complete data co the HumiSeal line of coatings so you can select coatings best suited for your application.
COLUMBIA TECHNICAL um CORPORATION
Woodside 71, N.Y ·YE 2-0800
VISIT US AT BOOTH ±f-1116 AT IRE SHOW
CIRCLE 247 ON READER SERVICE CARD electronics

put impedance may be selected at 75, 100 and 600 ohms to suit the needs of the tv, telephone and audio industry. Unit contains a built-in
voltmeter and precision attenuator; max output is 31.6 v; distortion is less than 0.4 percent in audio range.
CIRCLE 447 ON READER SERVICE CARD

Test Table
LINEAR ACCELERATION
MICRO GEE PRODUCTS, INC., 6319 W. Slauson Ave., Culver City, Calif. Linear acceleration table features an air bearing suspension and is designed to provide single axis motion. Model 70B is useful for evaluating dynamic performance, threshold characteristics. cross-axis and g sensitivity of accelerometers, gyroscopes and other flight transducers. Test specimens up to 10 lb can be accelerated up to 5 g's with a max linear displacement of 2 in. (double amplitude ).
CIRCLE 448 ON READER SERVICE CARD

Complex computer boards wired
automatically by C)At.t.(9btap® machines
2480 wires and 4960 connections are contained in this complicated back panel--automatically wired by a Gardner-Denver "Wire-Wrap" machine.
This is typical of how Gardner-Denver brings new dimensions to the reliability of complex electrical connections. This machine, with its punched card control system, wires complicated modular panels fast--in just about any conceivable pattern ...makes literally thousands of connections in a small space.
And these connections are the most reliable in the world--because they're solderless wrapped connections. Just how good are they? Over a billion without reported failure.
If you're looking for ways to make lasting, trouble-free connections, fast --consult one of our engineers, or write for bulletin 14-121.

Display Driver
SOLID STATE
CELCO-CONSTANTINE ENGINEERING
LABORATORIES CO., Mahwah, N. .J. This unit, a deflection amplifier, uses high power, high frequency transistors to drive a magnetic deflection yoke. Unit produces excellent step function response. Input voltage versus yoke current linearity to percent is achieved. Features include true push-pull per-
March 9, 1962

See this machine in action at IRE show BOOTHS 4524-4526

EQUIPMENT TODAY FOR THE CHALLENGE OF TOMORROW
GARDNER. -DENVER
Gardner-Denver Company, Gardner Expressway, Quincy, Illinois In Canada: Gardner-Denver Company (Canada), Ltd., 14 Curity Ave., Toronto 16, Ontario

CIRCLE 169 ON READER SERVICE CARD

169

ICI 3Et la
CARD READER
A high reliability programming device of

Le O

COMPACT

LIGHT-WEIGHT

DESIGN
OThe DREXAMATIC Card Reader is a static memory. All information on a

DREXAMATIC
SERIES 754

punched card is presented simultaneously

in the form of switch closures. Changing

FEATURES:

cards requires only seconds, and once set, the memory status is independent of

· Utmost reliability for critical applications

power failure, or severe environmental

· Compact light weight design

conditions. Complete flexibility permits

· Flexibility

application to any system. Both terminals

· Ease of operation

of each switch element are terminated on

· Economy

the back plane. Individual switch elements

can be either normally open or normally

closed. Sound basic design and quality FiRsuzz

control in manufacture provide the e-`="/ utmost reliability for critical applications. True wiping action is a design characteristic. Rhodium and gold

DYNAMICS

contacts are standard.

Horsham, Pennsylvania

O

WAverly 7-6200 0

CIRCLE 248 ON READER SERVICE CARD

DU-CO

RESISTOR TUBES

formance into single ended yoke for highest efficiency. A built-in power supply with X and Y channels are included in the compact component.
CIRCLE 449 ON READER SERVICE CARD
Transformers
MINIATURIZED MICROTRAN CO., INC., Valley Stream, N. Y. The PICO series with leads on 0.1 in. grids is only à in. by !,U
in. by n in. high and weighs only
0.1 oz. Gold-plated, high-strength nickel alloy leads permit both reliable soldered joints and highdensity welded packaging. Epoxy molded construction per MIL-T-27, grade 5, class R, 10,000 hr life. The 20 different items in the series are available in impedance ratings from 3.2 ohms to 200,000 ohms.
CIRCLE 450 ON READER SERVICE CARD

FOR WIREWOUND RESISTORS with VITREOUS

ENAMEL, CEMENT or SILICON COATING

These ceramic forms are furnished in quantities accurately notched, slotted, turned, tapped or machined to specifications.
These Du-Co parts are produced to close dimensional tolerances--hold to the thermal expansion required to meet the proper enamel fit.

Du-Co steatite porcelain is extremely smooth,

low-water absorptive to pass humidity tests.

Facilities for Centerless grinding to hold diam-

eter ±.0005". Standard sizes

are

stocked

for

immediate

delivery! Ask for additional literature on your letterhead.

steatite and technical ceramics

"Proud fo Serve VOL,"
DU-CO CERAMICS CO.
203 Main Street

170

CIRCLE 170 ON READER SERVICE CARD

Servo Amplifier
SOLID STATE
DIEHL MFG. CO., Somerville, N. J. Model XA-500 will drive both phases of 115/115 v, 60 cycle servomotors with outputs from 25 to 100 w. It utilizes scr's in conjunction with saturable reactors. By control-
electronics

ling both phases of the motor, it eliminates the need for constantly energizing a reference phase. Four inputs, two a-c and two d-c, are provided. They may be used in any combination. Prices are from $250 to $375 each, depending on quantity.
CIRCLE 451 ON READER SERVICE CARD

FANCY Síti
.....11,1···········

Cup Core Assemblies
FOR FILTER NETWORKS INDIANA GENERAL CORP., Electronics Div., Keasbey, N. J. Temperature compensated cup core assemblies utilize a new Ferramic material. Available in 7 physical sizes, with the TC-2 material in them applicable over a frequency range of 1 Kc to 1.5 Mc. Q values of 800 are obtainable, and gapped inductance values range from 40 to 1,000 mh per 1,000 turns. Complete core assembly is comprised of a matched pair of cup cores, a trimmer assembly, a bobbin and a bracket with base plate.
CIRCLE 452 ON READER SERVICE CARD
C-W Oscillator
AND AMPLIFIER TRAK MICROWAVE CORP., Tampa, Fla., announces a miniature, high power, microwave c-w oscillator, type 2975 CW. A c-w amplifier, type 2975A, with the same specs and dimensions has also been devel-
March 9, 1962

' .111111R0

(4010

Stepping devices from A. W. Haydon Co. can do wonderful things to pulses
...with pulses...and for pulses. For instance, one precision gated stepping switch acts as a pulse divider for a random or variable pulse source--or as a frequency divider if the pulse source is constant. Another works in conjunction with pulses, supplying single or multiple switch closures with an accuracy virtually equal to that of the pulse source itself. Still a third will count a predetermined number of pulses, rotate a stepper switch, return the counter to 000, and cut off the pulse source. · The remote positioning device illustrated is but one of A. W. Haydon Company's fancy steppers.
Here aprecision gated stepper switch has been coupled to asynchro transformer. Similarly, precise angular positioning of rotary components such as
potentiometers, dials and indicators can be controlled. Based only on the number of pulses received (not incremental changes in voltage or phase angle), it will hold aset position whether power is on or off, and will home the synchro to the zero reference on demand--ready to accept another
setting. · All A. W. Haydon Co. stepper motors are all-electric--no ratchets, linkage, contacts or other mechanical crutches are used. Their power consumption is low, accuracy is extremely high. · Send for technical brochure SP9-1 and find out more about pulse driven steppers and their application.
AYDON

COMPANY
235 North Elm Street, Waterbury 20, Connecticut

CIRCLE 171 ON READER SERVICE CARD

171

oped. Typical usage is for beacons, transponders and microwave communications. Frequency, 2 Gc, tunable -±-20 Mc; power output, 15 w c-w; power supply requirements, 900 I/ at 90 ma and 6.3 y a-c at 1.05 amp; size, 3 in. long by 2 in. in diameter.
CIRCLE 453 ON READER SERVICE CARD
Resistor
FERROXCUBE CORP. OF AMERICA,
Saugerties, N. Y., announces the new PTC (positive temperature coefficient) resistor. It varies in resistance as the ambient temperature changes.
CIRCLE 454 ON READER SERVICE CARD

TUNES 10 CPS TO 10MC ·
BUILT-IN VOLTMETER AND ATTENUATOR CONTROLS OUTPUT, 1MV TO 3.16V ·
SOURCE IMPEDANCE SWITCH SELECTED, 75, 100, 600 (.2
HIGH OUTPUT TO 31.6V (BELOW 100KC) ·
PLUS FEATURE. SQUIAREWAVES TO 100KC PRICE: $770
New RC Oscillator Model 1370 tests AF/Video Amplifiers, wide band systems, networks, and telephone circuits with ease. Output impedance may be set at 75, 100 and 600 ohms (or 5 ohms using accessory pad TM6454) to exactly suit the system under test. Six decade bands effectively expand the tuning dial to 105 inches; dual ratio drive enables any frequency to be set with precision.
A modified Wien Bridge circuit gives exceptional stability and low, low distortion. Circuit also generates squarewaves to 100Kc for transient analysis and rapid bandwith determination.

Bidirectional Counter
SOLID STATE
ERIE-PACIFIC, Div. of Erie Resistor Corp., 12932 S. Weber Way, Hawthorne, Calif. Model 510 provides a convenient concept of digital control in industrial and military systems. This is accomplished through the ability of the counter to count either forward or backward--so that it at all times records the net
or -- input supplied by a directional transducer, or the net difference between the inputs of two transducers, where one may provide command data and the other feedback.
CIRCLE 455 ON READER SERVICE CARD

Write For Complete Technical Literature
MARCONI INSTRUMENTS
DIVISION OF ENGLISH ELECTRIC CORPORATION
111 CEDAR LANE · ENGLEWOOD · NEW JERSEY
Main Plant: Sr. Albans, England
See us at IRE Booth 3401-5

Torque Tester
SELF-CONTAINED
GENERAL THERMODYNAMICS CORP.,
211 Concord Turnpike, Cambridge 40, Mass. The dynamic torque test-

172

CIRCLE 172 ON READER SERVICE CARD

A New Twi$0.

We like people with ideas! If you have suggestions for cartoons, send them on to us...A PRIZE FOR EVERY ENTRANT! You'll get a credit line too... if you give
permission.
Cartoon above suggested by S. Malin, Fresh Meadows, New York.

We aren't really cartoonists... secretly, we manufacture
HEXSEALS SEELSKREWS' SEELBOLTS' SEELRIVITS'RUBRGLAS* SILICORINGS* Modular Self-Sealing Nuts, Screws and Hardware for use on all types
of Switches, Panels and Boxes.

OUR PRODUCTS MEET ALL APPLICABLE MIL SPECS

Our modular seals may be new to

you; let us send you our Catalog

359B.

*Trade Mark

Write or call: MISS RIVA SOLINS
APIV1-HEXSEAL

CORPORATION 41 Honeck St., Englewood, N. J.
LOwell 9-5700

VISIT OUR BOOTH 2835 AT THE IRE SHOW
CIRC,E 249 ON READER SERVI:.-E CARD

ing machine is a mechanical torque measuring device that requires no support equipment. A patented mechanical system measures the deflection of a rotating torsion bar and indicates torque on a dial. Clockwise or counter-clockwise rotation as well as static measurements can be made. Torque ranges
covered, from 0-1 to 0-200 oz-in. CIRCLE 456 ON READER SERVICE CARD
Capacitance Bridge
HIGH STABILITY BOONTON ELECTRONICS CORP., 738 Speedwell Ave., Morris Plains, N. J. Model 75B, a three-terminal device, is designed to extend capacitance measurement capabilities at 1 Mc. Capacitance range is 0.00002 to 1,000 pf. Parallel resistance range is 1,000 ohms to 100 megohms. Differential capacitance measurements
to 0.00002 pf are practical. Price is $1,375.
CIRCLE 457 ON READER SERVICE CARD
441111111iii
Diffusion Furnace
CONSOLE-TYPE BASE HEVI-DUTy ELECTRIC co., 304 Hart St., Watertown, Wisc. Diffusion fu rnace enables semiconductor manufacturers to obtain repeatable temperature uniformity of ± C. Both the diffusion furnace and a split tube source furnace are mounted on a single console base that can contain the controls and
March 9, 1962

_,ifeadbx, MODEL 925
...the counter
that remembers!!

SOLID STATE
20 MC
UNIVERSAL COUNTERTIMER
All new ...the rugged, compact Model 925 is designed to offer the ultimate in reliable counting of periodic or random electrical events and precise measurement of Frequency, Period and Time Intervals. Built-in memory provides readout storage, continuous display while counting, more frequent sampling and less operator eye fatigue. Modular construction.

OUTSTANDING FEATURES:
· IN-LINE NIXIE READOUT · 8 DIGIT MEMORY --
No Blinking · SENSITIVITY -- .1V RMS --
All 3Channels · THREE DC AMPLIFIERS · HIGH INPUT IMPEDANCE · AUTOMATIC DECIMAL POINT · ONLY 3M" RACK SPACE
(Model 925-R) · DECADE TIME BASE --
No Adjustments · STABILITY -- 1 Part In
108/Day; 5 Parts in 108/Week

ONE HAND PORTABILITY

Write today for complete specifications on the Model 925 or Model 925-R (Rack Model) -- the ideal instrument for laboratory or industrial applications.

',.,

QuoN ,y Where Ir

%N I·E

7/e.e,e/ef-eatz-àPer,,

Tekr7i`

ERIE-PACIFIC, DIVISION OF ERIE RESISTOR CORPORATION
12932 South Weber Way, Hawthorne, Calif. · ORegon 8-5418 · TWX HAW CAL 4006

CIRCLE 173 r!N READER SERVICE CARD

173

dial any output
from 0-1000 volts.
Keithley Regulated DC Supplies provide the stability, ease and accuracy necessary for awide range of laboratory tests. Typical applications include calibration of meters and de amplifiers; testing insulation, diode, and capacitor leakage resistances; or furnishing potentials for photo-multiplier tubes and ionization chambers.

power supplies specified by the customer. However, the diffusion furnaces also are available as single units, or they can be mounted atop each other to save valuable floor
space.
CIRCLE 458 ON READER SERVICE CARD

DURANT

DIGITAL READ-OUT COUNTERS

Model "Y" SERIES

se

·

1

MODEL 2.41-0.05% accuracy

A dc secondary standard featuring a long-life photo-chopper and zener reference. It is immune to shock and vibration, and offers long-term cali-

bration stability.

· Accuracy: 0.05% or 1millivolt.

· DC Output Voltage: 0-1000 volts-- plus, minus or floating, with 5calibrated dials and 100 1.tv resolution.

· Output Current: 20 milliamperes max.

· stability: 0.005% short term.

· Ripple: less than 1mv RMS.
· Overload Protection: fast-acting circuit.

relay

· Price: $800.00

Discriminator
SOLID-STATE
PRECISION INSTRUMENT CO., 1011 Commercial St., San Carlos, Calif. Subcarrier discriminator contains 9 IRIG discriminator channels with output meter for each in only 7 in. of rack space. Linearity is ±-0.4 percent, stability of zero, 0.15 percent. Subcarrier amplitudes from 10 mv to 10 y rms are accommodated. Two output ranges are available: ±0.4 ma into 300 ohms and -±5.0 ma into 1,000 ohms. Frequency response is flat to within ±0.5 db from d-c to IRIG cut-off frequency.
CIRCLE 459 ON READER SERVICE CARD

MODEL 240-1.0% accuracy
A general-purpose version of the Model 241 available at lower cost.
· Accuracy: 1.0% or 100 millivolts. · DC Output Voltage: 0-1000 volts--plus
or minus, with 3 calibrated dials and 10 mv resolution. · Output Current: 10 milliamperes max.
· Stability: 0.05% per eight hours. · Ripple: less than 3mv RMS above 5cps. · Overload Protection: Fast-acting relay
circuit. · Price: $345.00

full details in latest catalog

I rr

L, 1-4:

r·T 9 m IR. U lvi 1 r-Z

12415 Euclid Avenue · Cleveland 6, Ohio

Test Equipments
DOUGLAS MICROWAVE CO., INC.,
Mount Vernon, N. Y., has available a standing-wave indicator set and a bidirectional power monitor.
CIRCLE 460 ON READER SERVICE CARD
Digital Encoder
MANUAL-INPUT GUIDANCE CONTROLS CORP., Engineers Hill, Plainview, N. Y. Detented 7-bit, 128-position encoder permits manual insertion of coded signals into digital data systems, computers, automatic test equipment and numerical machine tool

174

CIRCLE 174 ON READER SERVICE CARD

Model "D" SERIES
for MISSILE TRACKING, RADAR CONTROLS, COMPUTERS, NAVIGATION INSTRUMENTS, GAUGING INSTRUMENTS, and ANY other indicator applications.
·Meets military specifications. ·High speeds, lower torque, lower
moment of inertia for long life. ·Nylon wheels with legible figures,
nylatron pinions. ·Single, 11/2,or double width wheels. ·One-piece aluminum die cast frame. ·Base mounting. Threaded mounting
holes may be in frame top or ends. ·Right or left hand drive, clockwise
or anti-clockwise rotation. ·"Y" Series, single or dual bank types. ·Component parts can be purchased
separately to meet design requirements.
Your answer to an infinite number of variable demands for PRECISION CONTROLS.
Send for Catalog No. 400

MANUFACTURING COMPANY

1912 N. Buffum Street Milwaukee 1, Wisconsin

12 Thurbers Avenue Providence 5, R. I.

REPRESENTATIVES IN ALL PRINCIPAL CITIES
CIRCLE 250 ON READER SERVICE CARD
electronics

New Bourns Knobp ot* Precision Potentiometer, NUMBER 22 -- NEW PRODUCT SERIES Dial and Knob-All in Front of the Panel!

With this new Bourns Knobpot, nothing Is behind the panel but the solder hooks and the bushing. Everything else is out in front, integrated into a single, compact unit. (Just 3/4" in diameter by 1" long, the easy-to-mount 10-turn Model 3600 Knobpot is shorter by 1 / 2 "than comparable potentiometers alone --to say nothing of the space it saves by incorporating its own turns. counting dial.)
Settings are easy to make and permanent. The clear-reading dial lets you adjust to 0.5% of the unit's total resistance value, and the knob's self-locking feature keeps your adjustment steady even under 10G vibration or 50G shock.
Reliability is insured by features you have come to expect from

Bourns: exclusive, indestructible Silverwelde multi-wire termi-
nation; 100% in-process and final inspections; Bourns' Reliability Assurance Program--the most extensive in the industry. Write for complete data.

Resistances: 1000R to 100K std. (to 250K spl.) Linearity: ±-0.5%
Power rating: 1.5W @ 25°C Max. operating temp.: +85°C Mech. life: 200,000 revolutions Humidity: MIL-STD-202, Method 103,
Condition B (steady state)

ACTUAL SIZE

BOURNS. INC.. TR IMPOT DIVISI!ON I
1200 coLumfala AVE., RIVERSIDE. CALIF..

PHONE, OVERLAND 4 ,1700 ·'reV)( CABLE: 0OURNSINC,

RZ9222

If og npviczypownuometers;transclucers for position, pressure, acceleration. Plants: Riverside, California> Ames, Iowa; and Toronto, Canada

March 9, 1962

CIRCLE 175 ON READER SERVICE CARD

175

DON'T MISS
REEVES-HOFFMAN'S

NEW, ULTRA-STABLE CRYSTAL-CONTROLLED
5-MEGACYCLE
FREQUENCY STANDARD HOFFMAN

DIVISION OF
DYNAMICS CORPORATION OF AMERICA, CARLISLE. PENNSYLVANIA

1309 at I.R.E. BOOTH
CIRCLE 267 ON READER SERVICE CARD

Good parts work best!

The high standards of MITSUMI electronic components are insured by a fully-automated assembly system, and double-checked by rigid quality controls. Mitsumi Electric Company is Japan's largest manufacturer of components for radio, television and communications equipment.
MITSUMI PARTS

MITSUMI ELECTRIC CO., LTD.
Komae, Kitatama, Tokyo

176

CIRCLE 176 ON READER SERVICE CARD

Intermediate Frequency Transformer IFT
POLYVARICON Variable Capacitor
e =ydilr

AUGAT
TEST JACKS
for .080 diameter prods
Meeting Requirements of MS16108 (Ships)

Patent Pending
Look at these features ...
oFront and rear barriers for additional voltage breakdown
o Closed entry contact design e Heat treated beryllium copper
contact
o Choice of three terminal styles

WIRE WRAP" for No. 20, 22,
24 or 26 wire

EYELET Hot tin
dipped

Pt -4;4% 1 Ls ,/-...,, .-i
TURRET Hot tin dipped

Plus ten brilliant Nylon** colors
(also available in Teflon**).

Write today for Data Sheet 162 describing Augat Test Jacks in detail.
'Gardner-Denver Company trademark. .*DuPont trademark

See us at the IRE Show, Booth No. 2229

AUGAT INC.
30 Perry Avenue, Attleboro, Mass.
CIRCLE 252 ON READER SERVICE CARD
electronics

controls. Unit works (1) with common signal input lead and 7 parallel output leads for straight binary counting from 0 to 127, or (2) with 7 parallel signal input leads and common output for generating composite signals from inputs of different frequencies or pulse widths.
CIRCLE 461 ON READER SERVICE CARD
voole

Modular Battery
LONGER CELL LIFE
GOULD-NATIONAL BATTERIES, INC.,
E-1200 1st National Bank Building, St. Paul 1, Minn. The modular construction consists of a battery case for use in fabricating cells of different voltages and capacities through the combination of anumber of batteries of standard size or predetermined size and shape. Battery case consists of an elongated rectangle having a row of cell pockets fabricated from a dielectric material. Modular concept provides batteries that can be fabricated to fit allotted space, yet deliver specified capacity.
CIRCLE 462 ON READER SERVICE CARD
4 0.
Teraohmmeter
FULLY LINE-OPERATED RottnE & SCHWARZ, 111 Lexington Ave., Passaic, N. J. Type N teraohmmeter is designed for measurement of extremely high insulation resistance. It has fixed test voltages
March 9, 1962

NEMS-CLARKE Surveillance... the Ears of the World

Multiple demodulation of any signal from 30-1000 mc is possible through this new receiving system. It is applicable to both communications and surveillance.
The units, AMD 21-4 Amplifier Demodulator, RFT 30-260 Frequency Tuner and RFT 250-1000 Frequency Tuner, allow reception of any signals in this frequency range and the demodulation of those signals simultaneously in four IF bandwidths either AM or FM. For increased flexibility, these units can receive four different frequencies simultaneously, one frequency in each of the following bands 30-110, 90-260, 250-500, 495-1000 mc.
Write for Data Sheet 777. Vitro Electronics, 919 Jesup-Blair Dr. Silver Spring, Maryland A Division of Vitro Corp. of America

VISIT VITRO AT

SHOW

BOOTH 3821-3823

`1, 17 77- .ELECTRON/Ce

[lee e

lea

e

`11° ell eel

le»

ee ee

ee ee ee

·-.4 e

.4

a r--
Om!

· ·3

ems I.

AMO 21-4 UNIT Accepts 1, 2, 4 inputs. Input Impedance 50 ohms. VSWR better than 1.5: 1. Modules: Bandwidths available 4 Orne;
2 Omc. 500 he; 50 he; 15 kc.

RFT 30-260 UNIT

TUNING RANGE

In Two Bands:

30-110 mc; 90-260 mc. AVERAGE NOISE FIGURE

30-110 mc, 5 db; 90-260 mc, 6 db

RFT 250-1000 UNIT

TUNING RANGE

In Two Bonds:

250-500 mc; 495-1000 mc.

AVERAGE NOISE FIGURE

250-500 mc, 9 db;

495-1000 mc, 12 db.

COMMON TO BOTH RFT UNITS

INPUT IMPEDANCE..50 Ohms Nominal.

TYPE RECEPTION

AM. FM. CW.

IMAGE REJECTION

56 db.

RACK SPACE

3th" by 19".

POWER

115/230 v-50-400 cycles.

CIRCLE 177 ON READER SERVICE CARD

177

of 10 and 100 v, a total range of 0.1 megohm to 50 T ohms, and is completely line operated with highly stabilized power supplies. It
is excellent for testing insulation of components, capacitors, transformers, cables, wires and the like.
CIRCLE 463 ON READER SERVICE CARD

WOOD ELECTRIC

CIRCUIT BREAKER SPECIALISTS

MINIATURE
Only 1.5 Cu. in., 2100 Series thermal breaker with
double contacts; meets MIL-E-5272A on vibration,
corrosion, sand and dust, explosion; trip-free, push-
pull operation. Ratings 5to 50 amperes. Size x x1inch.

When overload limits are critical, abetter way to protect your valuable electronic equipment is with Wood Electric magnetic and thermal circuit breakers -- types for airplane electrical systems, computers, general electronic equipment. All are built for dependability and precisely calibrated for critical applications by specialists in this field. For catalog write Dept.D

Soldering Furnace
FOR GLASS DIODES
C. I. HAYES, INC., Cranston, R. I., Model ,FED includes furnace, combination conveyor and work holding system, and stepless power controls. It is used to solder germanium wafers, leads, and glass sleeves into a glass diode assembly. Furnace readily lends itself to integration into an automated production line.
CIRCLE 464 ON READER SERVICE CARD

Circuit breakers for critical applications

WOOD ELECTRIC CORPORATION 244 Broad Street, Lynn, Mass., Area Code 617 LY8-5313
CIRCLE 253 ON READER SERVICE CARD

-130 ° +1000 °F
HIGH TEMPERATURE
WIRE and CABLE
FOR QUALITY ASSURANCE
ttç Supeetuf.
AIRFRAME WIRES · HOOK-UP WIRES · MAGNET WIRES SINGLE g( MULTICONOUCTOR CABLES · COAXIAL CABLES
with insulations of
TEFLON · SILICONE RUBBER · MGT ·ML ·PVC ·POLYETHELENE
Super-Temp serves the electronic, missile and aircraft industries / with dependable high temp specialized wires and cables. Exten-
sive laboratory quality controls insure wide margins of dependable performance. Quality certification program with lot
\ control and bonded area available for military programs.
Write for samples and price quotations on specific
needs. Address Dept. E-23. AMERICAN SUPER-TEMPERATURE WIRES, INC.
A Subsidiary of Haveg Industries, Inc.
8West Canal Street, Winooski, Vt. 13151 Sherman Way, N. Hollywood, Cal.

178

CIRCLE 178 ON READER SERVICE CARD

Metal Film Resistors
ULTRA RELIABLE ELECTRA MFG. co., 4051 Broadway, Kansas City 11, Mo., announces a line of ultrahigh reliability deposited metal film resistors. The HRM series is available for critical industrial and military applications. Currently available in w sizes and common resistance values.
CIRCLE 465 ON READER SERVICE CARD
Miniature Relay
GENERAL PURPOSE NORTH ELECTRIC co., Galion, Ohio. Type CC dpdt relay (2 Form C) can be obtained with operating
electronics

speeds as fast as 3 millisec. It has a minimum life of 100 million operations at rated loads. Measuring la in. by 11 in. by 1.1k in. above mounting surface, it has silver contacts with an average contact resistance of 30 milliohms. Insulation resistance between all mutually insulated parts is 100,000 megohms minimum at 500 y d-c, 25 C at 20 percent relative humidity.
CIRCLE 466 ON READER SERVICE CARD

Metal Castings
BY SHAW PROCESS AVNET-SI-IAW CORP., Plainview, N. Y. Illustrated are waveguides cast in aluminum alloy by Shaw Process precision ceramic-mold casting technique. They have parallel walls cast to 30/40 microinch surface finish. Shaw Process can reproduce the most complex shapes with high accuracy and at low cost. The process uses any castable metal, ferrous or non-ferrous.
CIRCLE 467 ON READER SERVICE CARD
Data Recorder
AND ENCODER PERKIN-ELMER CORP., NorwalK, Conn., announces a new high-speed digital data recorder and a low torque, one-brush shaft encoder.
CIRCLE 468 ON READER SERVICE CARD
Wirewound Resistors
WITH MOLDED COATING DALE ELECTRON, INC., Columbus, Neb., announces bobbin resistors available in two physical sizes and power ratings: MWA-8, 1/10 w, and MWA-10, w. Operating tern-
March 9, 1962

Big 3-D views help

Zenith assemble tiny hearing aid

Zenith's new "Signet" hearing aid packs wider response and greater gain than before into a package so tiny that it takes Bausch & Lomb StereoZoom® Microscopes to manufacture, assemble and inspect it.
Zenith chose StereoZoom Microscopes for vivid views of tiny parts, magnified in natural 3-D ...for all-day viewing without eye fatigue ... for 7inches of unobstructed working distance for hands and tools.
Put B&L StereoZoom Microscopes to work on your precision operations. Choose from the most complete line of industrial microscopes, including zoom models for scanning or critical study throughout the entire range of 3.5 x to 120 x!
BAUSCH 8c LOMB

BAUSCH & LOMB INCORPORATED
61427 Bausch St.,
Rochester 2, N. Y.

Ej Schedule ademonstration at my convenience. D Send StereoZoom Catalog D-15.
NAME

COMPANY ADDRESS

CITY

ZONE

STATE

"Visit Bausch & Lomb Booth 3845 at the IRE Show"

CIRCLE 179 ON READER SERVICE CARD

179

perature range is from --55C to 145C. Max working voltage of MWA-8 is 27 y d-c or rms; of the MWA-10, 37 3.7 d-c or rms. Resistance range is from 10 ohms to 160,000 ohms, depending on type and tolerance. Tolerances: 0.5 percent, 1 percent. Temperature coefficient 20
ppm/deg C.
CIRCLE 469 ON READER SERVICE CARD

ENGINEERED HIGH-VOLUME PRODUCTION
OF
SHELLS
EYELETS &STAMPINGS
Cly-Del is a major supplier of drawn metal components used in every conceivable product from cosmetic cases to computers.

From its beginning, nearly
25-years ago, Cly-Del has been a company of undivided responsibility.

ANY SIZE panels
or nameplates ANY TIME
you need them with
tracer-guided ENGRAVOGRAPH

Servo Motor Tach
HIGH PRECISION
WRIGHT DIV. OF SPERRY RAND CORP.,
Durham, N. C., announces a size 11 servo motor tachometer. A temperature compensating thermistorresistor network stabilizes the speed sensitive voltage to within 0.5 percent and the phase shift to within 1 deg throughout the ambient temperature range of 0 C to 85 C. The tachometer linearity from 0 to 3,600 rpm over the temperature range is 0.07 percent.
CIRCLE 470 ON READER SERVICE CARD

Booth 4124 IRE Show

Write for catalogue ZR-5
new bermes
ENGRAVING MACHINE CORP.
154 W. 14TH, ST., NEW YORK 11, N.Y.
Chicago ·Los Angeles ·Montreal

Switch Module
SMALL-SIZED
NORTH ATLANTIC INDUSTRIES, INC.,
Plainview, N. Y. The SM-150 switch module measures 2 in. by 11 in. by 17, in. Side by side stacking permits build-up of any desired number of digits for use in system input application and test instrumentation. Design uses two internal conven-

180

CIR'CLE 180 ON READER SERVICE CARD

Offering complete help... planning, engineering, designing, development, tool and diemoking, produc-
tion, secondaries, inspection, packaging and delivery.

The big move four years ago put all Cly-Del facili-
ties and abilities in a new, one-level, fireproof, 80-thousand square-foot building. Stand-by auxiliary heating and compressor systems and a 17thousand square-foot warehousing area for strip stock assures Cly-Del customers of deliveries when they need them.

Up-dating equipment is a constant, continuing responsibility of Cly-Del management. As a result, Cly-Del is always a modern, efficient, high-volume, quality producer of shells, eyelets, stampings.

· %
KNOW
CLY-DEL

You are invited to ask for estimates of cost and delivery for parts you require. Your inquiries will receive prompt, accurate attention.

BETTER
Ask for new 8-page brochure
CLV-DEL
MANUFACTURING COMPANY SHARON ROAD
WATERBURY 20, CONNECTICUT

CIRCLE 252 ON READER SERVICE CARD electronics

MILITARY COMMAND TECHNOLOGY..., A NEW SCIENCE FOR NATIONAL DEFENSE

March 9, 1962

Systems that instantly provide the military Commander with the information necessary for decision.
Systems to enable the Commander to control all his forces under any conditions.
This is the purpose of Military Command Technology. It is the work carried out at MITRE.
It includes command systems, control systems, intelligence systems, warning systems, and support systems. It encompasses a vast
network of interrelated, constantly evolving systems that protect our country.
The designer of these systems must be able to visualize how war would be fought. He will work
closely with the nation's top policy makers. He will help solve the problems of military command
-- nature, deployment, and use of weapons; war-plans; control of forces; missions;
logistics; support and intelligence operations. But, most important -- he must be able to apply
existing and predictable technology to the abstract problems of future military command.
Military Command Technology, in short, is asystems engineering task of overwhelming importance.
MITRE has men who can get the job done. And there is room at MITRE for more such men --
top professionals who feel they want to serve their country in a vital area. There are key assignments
available in system analysis and planning; intersystem integration; general system engineering;
initial system design; and research and experimentation. Facilities are at Bedford, Mass.;
Washington, D. C.; Colorado Springs.
If you feel you can advance this new science, you are urged to write in confidence
to Vice President -- Technical Operations, The MITRE Corporation, Box 208, Dept.W 217, Bedford, Mass.
THE
MITRE CORPORATION
MITRE is an independent, nonprofit corporation working with -- not in competition with
-- industry. Formed under the sponsorship of the Massachusetts Institute of Technology, MITRE serves as Technical Advisor to the Air Force Electronic Systems Division and is chartered to work for such other Government agencies as FAA. An Equal Opportunity Employer
181

IRE SHOW
presenting
"THE GOLDEN AGE OF
ELECTRONICS"
March 26-29, 1962 The New York Coliseum
... part of the International Convention of the IRE
The Institute of Radio Engineers
1 East 79th Street · New York 21 Members $1.00. Non-members $3.00. Age limit: over 18
CIRCLE 301 ON READER SERVICE CARD
This Fast, Flexible Crossbar, The Simplest Memory Matrix Available, Implements Complex Logic with Minimum Electronics & Maximum Reliability.

tional switch wafers, providing longer life and lower capacitance than p-c types. Modules are available with wide range characteristics up to 4pole 12 position, with stops. Interwafer shielding is also available.
CIRCLE 471 ON READER SERVICE CARD
A-C Calibrator
HIGH ACCURACY WESTON INSTRUMENTS DIVISION, Daystrom, Inc., 614 Frelinghuysen Ave., Newark 14, N. J. Model 172 audio frequency a-c calibrator provides a regulated and adjustable sine wave output voltage of 0.1000 to 1099.9 yin 4decade ranges from 50 cps to 10 Kc. Four dials are provided--the first indicating from 0 to 10 and the second, third, and fourth from 0 to 9, for a reading of up to five digits. Rated accuracy is ± 0.05 percent of indicated value at 10 percent to 100 percent of each decade range from 50 cps to 2,500 cps.
CIRCLE 472 ON READER SERVICE CARD

Blessed with refreshingly straightforward logic, this versatile, high-density device awaits your ingenuity. Apply its unique* reliability (20 million operations/crosspoint, minimum) and "pre-wired" simplicity to storage, format conversion, buffering, programming, and logical manipulation. The Crossbar is the ,logical improvement on stepping switches and relay matrices.
Write us for why and how.,
*An adjective fully justified b> exclusive U.S. and Foreign Patents.

ESTABLISHED 113313
SOPHISTICATED SWITCHING SYSTEMS
BOX 516, ROCHESTER 2, NEW YORK

Plant & Offices: Honeoye Falls, N. Y. Phone: Honeoye Falls 485 TWX RO 572-U

182

CIRCLE 182 ON READER SERVICE CARD

Variable Inductor
METALIZED
JFD ELECTRONICS CORP., 6101 Sixteenth Ave., Brooklyn 4, N. Y. Series of variable inductors covers
electronics

inductance values from 0.03 mh to 1.5 mh, in overlapping ranges. Adjustment range is ±10 percent
from nominal value; typical minimum Q values, 100. Construction is of metalized glass, with precision brass tuning mechanism for extremely stable performance over a wide operating temperature range.
CIRCLE 473 ON READER SERVICE CARD

NOW FROM INELDMATIC:

Optical Radar Set
USES RUBY LASER MARTIN MARIETTA CORP., Orlando, Fla. Optical radar set employs a ruby laser. The prototype laser device consists of a complete transmitting and receiving system packaged in a suitcase occupying only 1.6 cu ft of space. The Suitcase laser transmits and receives a concentrated beam of light, much like a radar, and is believed to have considerable value in military applications. Commercial uses include surveying, where distances can be accurately measured without triangulation.
CIRCLE 474 ON READER SERVICE CARD
Indicator Light
WIDE APPLICATION DRAKE MFG. co., 4626 North Olcott Ave., Chicago 31, Ill. The E'lite type 5200 features simplified construe-
March 9, 1962

MODEL 1061 5-SETTING WELD ENERGY SELECTOR

MODEL 1048B DUAL RANGE 20/100 WATT SECOND POWER SUPPLY
MODEL 1032 WELDING HEAD

A NEW WELD STATION CONCEPT

A weld station designed for the maximum in weld repeatability; higher productivity with less chance of operator error; wide latitude of heat selections. The power supply is the new Weldmatic 1048B with dual range full-switching circuits of .1 to 20 and 0.5 to 100 watt seconds. Voltage regulation of
1%, and high resolution mirror-backed meter insure precise heat settings. The new Weld Energy Selector Model 1061 allows independent selection of any of five present energy settings. A sixth button shifts heat control back to the power supply. Model 1032 welding head with its absolute linear electrode movement, true force firing and fastest follow-up, is without equal in delivering repeatable welds. If desired, dual heads may be used.
For details on this new concept in electronic welding, call your Weldmatic representative or write Weldmatic Division/Unitek, 950 Royal Oaks Drive, Monrovia, Calif.

WELDNIATIC DIVISION / UNITEK

CIRCLE 183 ON READER SERVICE CARD

183

tion for increased durability and reliability. It measures 1 in. o'verall length, with a hole diameter of ià in. Lampholder housing is molded of Glaskyd material for strength as well as economy. Wide choice of styles, shapes and colors of lenses available.
CIRCLE' 475 ON READER SERVICE CARD

eke .

3in 1FIXTURE
for · FLOATING ZONE REFINING
AND CRYSTAL GROWING · HORIZONTAL ZONE REFINING
· CRYSTAL PULLING
This Lepel 3 in 1 unit is designed for production work as well as for research and development laboratories doing experimental work on semiconductor materials, thermoelectric materials and ultra pure metals. This combination fixture provides facilities for horizontal zone refining, floating zone refining and crystal growing. All these facilities may not be required in a single program but the rapid progress in materials science emphasizes the need for just such versatile equipment.

A-C/D -C Converter
SELF-POWERED
CUBIC CORP., San Diego 11, Calif. Model AC-85 provides means for making precision a-c measurements with d-c digital voltmeters, pen recorders and any d-c measuring device having full floating input. Converter features transistorized circuitry with a Nuvistor input for maximum stability. Input may be floated to 500 y d-c and input circuitry with full gua·rd shielding provides common mode rejection in excess of 70 db at 60 cps. Price is
$1,400.
CIRCLE 476 ON READER SERVICE CARD

This fixture consists of the three attachments and the basic unit which contains the traverse and programming mechanism. All three attachments and the generator can be operated from the control panel.
The change from floating zone operation to horizontal zone refining to crystal pulling require less than a half hour.

Our engineers will process your work samples and return the completed job with full data and recommendations without cost or obligation.

WRITE FOR LEPEL CATALOG

L/

/HIGH FREQUENCY

LABORATORIES, INC.

55th ST. & 37th AVE., WOODSIDE 77, N. Y. CHICAGO OFFICE: 6246 WEST NORTH AVE.

Miniature Relay
PLUG-IN UNIT
AUTOMATIC ELECTRIC CO., 400 N. Wolf Rd., Northlake, Ill. Series EIN is a Class E relay mounted to a plug and enclosed in a clearplastic removable cover. Plug contacts are designed so the relay may be used with aflush-mounted socket or soldered directly into the circuit. This packaging allows easy assembly and maintenance, reduces damage in handling and in shock and vibration environments. Relay is available with operating voltages up to 220 y, d-c or a-c.
CIRCLE 477 ON READER SERVICE CARD

184

CIRCLE 184 ON READER SERVICE CARD

the right punch 11 die at your finger tips...
NEW DI-ACRO PUNCH PAKS

Punch Pak No. 1-$139.50 Punch Pak No. 2 -$259.50
· Off the shelf delivery · Adapters to fit any
punch press
Di-Acro Punch-Paks save you money, cut production delays. No time lost looking for the right size or waiting for special orders. Cost is approximately 10 per cent less than individual punch and die sets--with the rugged, steel store-or-carry chest free. All Di-Acro Punches and Dies are precision made of quality tool steel.
PUNCH-PAK NO. 1 contains 30 sizes of round punches and dies from 3,164" to M" in increments of 1/64".
PUNCH-PAK NO. 2 contains round punches and dies from 1/16 to Ye in 1/16" increments, round sizes from ¡e to 2" in je increments, squares in W, je, %" and 1" sizes, one die holder and two die adapters.
Die Adapter A-2 %" diameter1%" bore, Die Adapter B-2 %" diameter-21,i" bore.

DIMENSION DATA
All Di-Acro Punches to 1/ 2 " have 1/2 " diameter shanks, 2 13/32' length.
All Di-Acro Punches from 1/ 2 'to 2" have 1" diameter shanks, 31/ 4 " length.
All Di-Acro Dies to 34' are 11/4 " diameter, 1/ 4 'high.
All Di-Acro Dies from 34' to 13/3" are 21/ 4 "diameter, 1/ 4 "high.
All Di-Acro Dies from 11/ 2 ' to 2' are 23 /4 "diameter, 15 /32" high.

PUNCH AND DIE HOLDERS

which adapt Di-Acro Punches and Dies to

--,imionW

any punch press are

7

·

listed in literature on single station punch

and die program. Ask for it ... also for

literature on new Adjustable Punch and

Die program.

For full information consult Yellow Pages of your phone book under Machinery-Machine Tools for the nome of your Di-Acro distributor or write us.

d'I. aPc RECIe SION METALWORKING EOUIPMENI

Pronounced die-ack-ro
DI-ACRO CORPORATION

433 Eighth Avenue Lake City, Minnesota · U.S.A. CIRCLE 254 ON READER SERVICE CARD
electronics

PRODUCT BRIEFS
MINIATURIZED POWER PACKS ultra low voltage. Electronic Research Associates, Inc., 67 Factory Place, Cedar Grove, N. J. (478)
MULTIHEAD WIRE WELDER adjustable table. Alphil Spot Welder Mfg. Corp., 1058 Pacific St., Brooklyn 38, N. Y. (479)
DIFFERENTIAL D--C AMPLIFIER wideband. Dynamics Instrumentation Co., 583 Monterey Pass Road, Monterey Park, Calif. (480)

WATTMETER-LOAD FOR RFOUTPUT TO 150 WATTS

PHOTOCONDUCTIVE CELLS four basic sizes. General Electric Co., Owensboro, Ky. (481)

METAL--FILM RESISTORS À, iand w. Kidco Inc., P.O. Box 278, Medford, N. J. (482)
CONTINUOUSLY VARIABLE DELAY LINE operates up to 60 Mc. Ad-Yu Electronics Lab., Inc., 249 Terhune Ave., Passaic, N. J. (483)

The new BIRD Model 6150 TERMALINE
RF Wattmeter is atermination type absorption instrument having selectable dual power ranges of 0-30/0-150 watts. Power values are read directly throughout the frequency range of 30-500 mc. The instrument is portable, simple to operate, and requires no calibration or
auxiliary power ·

MEMORY CORE in plane and stack assemblies. Ferroxcube Corp. of America, Saugerties, N. Y. (484)
CAPACITANCE MEASURING SYSTEM extended range. Electro Scientific Industries, 7524 S.W. Macadam Ave., Portland 19, Ore. (485)
MEDICAL RADIATION ANALYZER transistorized. Franklin Systems, Inc., 2784 Hillsboro Road, West Palm Beach, Fla. (486)
TEMPERATURE INDICATORS solid or liquid, Alpha Wire Corp., 200 Varick St., New York, N. Y. (487)

Specifications: BIRD Model 6150

Power scales:

0-30 and 0-150 watts

Impedance:

50 ohms nominal

Frequency Range: 30-500 mc

VSWR:

1.1 maximum

Accuracy:

of full scale

Input Connector: Female N

Weight:

8pounds

Size: Price:

315/16" x63/8"x12" $225.00 F.O.B. Factory

other models available

INSTRUMENTATION CART priced at $14.95. Atlantis Electronics Corp., Box 451, Garland, Texas. (488)
HIGH--ENERGY BATTERIES power tv camera. Yardney Electric Corp., 40-50 Leonard St., New York 13, N. Y. (489)

ELECTRONIC COUNTER 10 cps to 10 Mc. Lavoie Laboratories, Inc., Morganville, N. J. (490)

SERVO AMPLIFIER for precise control.

Photocircuits Corp., 31 Cliff Ave.,

Glen Cove, N. Y.

(491)

HERMETICALLY SEALED CAPACITOR flat shape. Good-All Electric Mfg.
Co., Ogallala, Neb. (492)

BIRD Model 611 (power scales 0-15 and 0-60 watts) and Model 612 (power scales 0-20 and 0-80 watts). Price, either model: $175.00. Model 61 with two compatible power scales as low as one watt and up to 80 watts. Price: $220.00. Frequency range of any model may be extended. Prices on request.
Contact BIRD for further Iinformation on these instruments
and other BIRD products.

1111110e
BIRD Model 6150
TERMALINE RF Wattmeter

1R II ELECTRONIC CORPORATION

30303 Aurora Rd., Cleveland 39 (Solon), Ohio

CHurchill 8-1200

TWX CGN FS 679

Western Representative,

VAN GROOS COMPANY, Woodland Hills, Calif.

March 9, 1962

CIRCLE 185 ON READER SERVICE CARD

185

10 Megohms

o
PUSP PPG an

'-
yoo
SIANUY YOUPPI MILS

PLUS Control

An electronic voltmeter with a meter-relay
This happy combination makes an extremely versatile and acute instrument.
It has critical measuring ability that goes with high input impedance, in space-saving panelmounting style.
It also has the reliable, simple control oía locking contact meterrelay, with adjustable set points.
Many difficult functions can be easily controlled: conductivity cells, life testing of components or systems, production testing and sorting, automatic GoNo Go of missile circuits.
Ready When Needed
Metronix DC instruments such as Model 301-C-CMR (illustrated)have input resistances up to 10 megohms. AC input impedances go as high as 5 megohms. Like all Metronix panelmounting electronic voltmeters (PMEV's), they are always connected-- immediately available for continuous monitoring of critical parameters.
Send for data sheets describing Metronix PMEV's in single or multiple ranges, DC or AC, with either meterrelays or conventional indicating meters.
METRONIX
The Electronic Instrument Division of Assembly Products, Inc.
Chesterland. Ohio
Telephone: HAmilton 3-4440
Visit Us at Booth 3942, IRE

Literature of the Week

JUNCTION DIODES

Sperry Semi-

conductor, Norwalk, Conn. Bro-

chure SS-200 shows types of sub-

miniature alloy junction silicon

diodes. (493)

PREAMPLIFIER DeVar-Kinetics Division, C.E.C., 494 Glenbrook Road, Glenbrook, Conn. Bulletin IM-511 completely describes aversatile pre-
amplifier. (494)

CONNECTOR PRODUCTS

TMC Con-

nector Products Div., The Techni-

cal Material Corp., P.O. Box 142,

Mamaroneck, N.Y. A 16-page cata-

log describes connectors, patch

panels, adapters, and connector

mounting plates. (495)

tion power transistors are covered in a recent catalog sheet. (502)

VACUUM CAPACITORS

Dolinko &

Wilkens, Inc., 1907 Summit Ave.,

Union City, N. J. A catalog de-

scribes high voltage, high current

fixed vacuum capacitors. (503)

PULSE GENERATOR Rese Engineering Inc., A & Courtland Sts., Phila-
delphia 20, Pa. Brochure covers
pulse generator with controllable linear rise and fall time. (304)

CONTROLLER PROCESSOR

Epsco,

Inc., 275 Massachusetts Ave., Cam-

bridge 39, Mass., offers a 30-page

brochure of advance data sheets on

275 controller processor. (505)

TRANSFORMER CASES

Kinetron

Corp., Shrewsbury & Patterson

Ave., Red Bank, N.J., offers a 2-

page bulletin describing varied di-

mensions, materials, finishes, modi-

fications and prices of its

MIL-Standard cans. (496)

AUDIO--VISUAL SYSTEMS

Applied

Communication Systems division of

Litton Systems, 335 N. Maple

Drive, Beverly Hills, Calif. A de-

scription of audio-visual systems

for industry is contained in an il-

lustrated 8-page brochure. (497)

INDUSTRY INSTRUMENTS

General

Radio Co., West Concord, Mass. A

folder describes such instruments

as continuously adjustable auto-

transformers, sound and vibration

measuring equipment. (498)

TRANSISTORS

Tung-Sol Electric

Inc., One Summer Ave., Newark 4,

N.J. Form T-481 contains reference

information on five lines of tran-

sistors. (499)

MICROWAVE MEASUREMENTS

Po-

larad Electronics Corp., 43-20 34th

St., L.I.C. 1, N. Y., has issued a

revised and enlarged 4th edition of

its booklet "Notes on Microwave

Measurements." (500)

VHF--UHF NOISE GENERATOR

PRD

Electronics, Inc., 202 Tillary St.,

Brooklyn 1, N. Y. Catalog sheet il-

lustrates and describes model 904-A

vhf-uhf noise generator. (501)

POWER TRANSISTORS

Kearfott

Semiconductor Corp., 437 Cherry

St., West Newton, Mass. Three

types of pnp germanium alloy junc-

SILICONE DIELECTRICS General Elec-
tric Co., Waterford, N. Y. Data book S-24 covers a family of silicone dielectric fluids and com-
pounds. (506)

PLUGS Cannon Electric Co., 3208
Humboldt St., Los Angeles 31, Calif., has published an illustrated
catalog supplement presenting its KM Mark 2 plugs. (507)

EPDXY RESINS John C. Dolph Co., Monmouth Junction, N. J., has
available a new epoxy resin selection guide chart. (508)

HEAT RADIATORS

The Birtcher

Corp., 745 S. Monterey Pass Rd.,

Monterey Park, Calif. Technical

data sheet deals with series of

heat radiators for mounting high-

powered semiconductors. (509)

AMPLIFIER RACK MODULES Kin Tel Division of Cohu Electronics, Inc., 5725 Kearney Villa Road, San Diego 12, Calif. Data sheet 2-115 covers a line of amplifier rack modules with increased cooling
efficiency. (510)

NUCLEAR POWER SOURCE

Leesona

Moos Laboratories, 90-28 VanWyck

Expressway, Jamaica 18, N. Y.,

offers a technical data sheet on

Raypak self-contained nuclear

power source. (511)

AIR--DRY SILVER PREPARATIONS E. I. du Pont de Nemours & Co. (Inc.), Wilmington 98, Del. Air-dry silver preparations that can be used for making conductive patterns, printed circuits, or shielding coatings are
covered in a bulletin. (512)

186

CIRCLE 186 ON READER SERVICE CARD

electronics

Rátruit/ re/ Fos /f oe/ France

* Count capacity :99,999,999 * Bright inline readout :8digits * Unit and point indication (displayed) * High inputs sensitivity:50 mV to 100 yrms *Temperature range :0to 50° C
(-10 to 60° Con test) * Gatetime :0.1-1 and 10 seconds (+ 10--7) or any other value with external preset time base (optional)
* Time interval measurements °lies to> 100 days
* Pulse duration measurements (polarity+or-) * Period measurements * Ratio measurements * Chock and vibration tested

an other french product
anew solid-state 10 MC counter
15 MC model A-1149
maximum counting rate> with external aperiodic \ co mc
divider (optional) / U

The latest model of digital instruments manufactured by
a SCHLUMBERGER LTD subsidiary
408, Bank of the South west 13 1dg
HOUSTON 2, TEXAS

71-_Llz.F.SÎ`ouv 191- Stqt101 N°3104GT

CIRCLE 187 ON READER SERVICE CARD

187

PEOPLE AND PLANTS

oire · cirp

o

".6

SPECIAL

AIEE merger idea, he can be ex-

pected to put forth a dedicated '

zeal toward bringing it about.

There haven't been many times in

the past that Haggerty failed to

sell others on an idea, either.

At TI, he is the one single in-

dividual given the most credit for

first leading the company into the

semiconductor field, and then push-

ing its sales up to around $235 mil-

lion. TI people say Haggerty has

blended his leadership abilities

with agenerally modest, polite type

of personality. Some quickly add

that this doesn't mean they don't

know who is boss. "Haggerty can

really sit down on you when he

thinks it necessary."

TI people also view their presi-

dent as "one of the best at getting

to the heart of a complex problem,

then making a decision."

"He has an engineering back-

Haggerty: in favor of the merger ...

ground (BSEE, Marquette Univ., 1936) but you wouldn't consider

him a real technical person," says

one. "At the same time, he has the

PATRICK EUGENE HAGGERTY, who merger, along lines preliminary

could be the last IRE president, discussions have covered so far. He

used to work 10 hours a day, six believes the consolidation will pro-

days aweek. Since January, he has vide a better overall professional

averaged 12 hours aday, and often society for individuals, and bring

works Sundays, too, now. For a more unity to the profession. He

man to devote so much time to his also thinks a combined group will

work, he has to "enjoy it down to be more sound, financially.

his very fibers."

The merger negotiations, how-

This, Pat Haggerty (shown at ever, have added extra work to the

left, with Eric Jonsson, TI board IRE president's job this year, and

chairman), does.

this is one reason Haggerty now

He will be 48 on St. Patrick's works many Sundays.

Day. Of these years, he says the

In the past, he has tried to keep

last 16 "have been the most fun." his Sundays free from business af-

They represent the period in which fairs. Until this year, Sundays

he helped lead Texas Instruments were generally devoted to his

to a top spot in the semiconductor family (five children, ranging in

industry. Now president of TI as age from eight to 23) and personal

well as IRE, the modest but fast- affairs. Since he still considers he

stepping and imaginative North has a full-time commitment to TI,

Dakota native describes both jobs he had to find extra time for IRE,

as sheer fun.

so feels justified this year in work-

Even Haggerty, however, admits ing a 7-day week. He estimates he

the IRE presidency this year is a spends about one-quarter of his difficult and time-consuming task, working time on IRE matters, with

especially in view of the proposed Sundays devoted to writing letters

consolidation with AIEE.

and handling other IRE affairs.

Haggerty is in favor of the

If Haggerty is sold on the IRE-

ability to judge the significance of
a development, and take action." Haggerty, himself, believes the
electronics industry is still "very much a growth industry." He believes its growth in the next decade
will be as "absolute" as in the past, although not as great in percent-
age. "After all," he says, "we
started from zero." He believes the industry has
come through its economic problems of 61-62 in good shape. Overall, it remains healthy despite "one of the worst pricing struggles" it has gone through up to now. This
struggle isn't over yet, but because the rate of price decline now is not as great as it was last year he is
encouraged. There is only one hobby Pat
Haggerty cares much about, and
that is sailing. He gets in "little batches now and then," but his work schedule doesn't allow much
time even for this. "I find time for it occasionally, because it is the only thing I've found that is as much fun as working here." Since

188

electronics

The 2N398 was good ...The 2N398A was better.

POWER DISSIPATION

THERMAL RES/STANCE

"1111 2N398

Lee 05C/mlf 2N398A

tee oseei 2N2042 st 43

BUT LOOK AT THESE NEW HIGH VOLTAGE MILLIWATT TRANSISTORS FROM MOTOROLA

Whether It Has Been Five Years or Five Days Since You Selected a Milliwatt Transistor,
It Will Be Worth a Few Minutes of Your Time to Read This --
Motorola's two latest PNP germanium milliwatt transistor types -- the 2N2042 and the 2N2043 -- offer power dissipation of 200 milliwatts ... four times that of the 50 mW 2N398 types.
Here are devices with a minimum collector voltage of 105 volts. Here are devices whose breakdown voltages immediately suggest the answer to low power converter applications where a safeguard in voltage is desirable.
And here, in this series, is a device in a TO-5 package that dissipates 1/5 W without aheat sink ...an ideal unit as adriver for Nixie tubes, for power output stages, or for other high voltage applications.
Another "plus benefit" of these new devices is their maximum junction temperature of 100°C, rather than the usual 85°C of most milliwatt germanium devices. This higher operating condition -- or safety factor -- meets the requirements of many military equipments, as well as commercial equipment, and quality industrial applications, where temperatures of this order may not be expected but where the designer can have this extra safeguard at no extra cost.

NEW MOTOROLA 2N2042 and 2N2043

·105 Volts

AUDIO TRANSISTORS

·200 mW power dissipation in free air ·200 mA

·100°C maximum junction temperature

·Unique internal design with Quad-Mounted Substructure for greater mechanical ruggedness and high reliability
·Hermetically sealed

·Also available -- 2N2042A & 2N2043A MEG-A-LIFE types with certified reliability

If you would like more information about Motorola milliwatt transistors -- their design and specifications -- contact your nearest Motorola District Office, or write: Motorola
Semiconductor Products Inc., Technical Information Department, 5005 East McDowell Road. Phoenix 8, Arizona.

EWEST SEMICONDUCTORS AT IRE BOOTH 1117.1118

MOTOROLA
Serrric conductor Products Ir-pc,

.1 SUPSIDIARY OF MOTOROLA It
1020
5005 EAST McDOWELL ROAD · PHOENIX 8, ARI7oN,A

LOOK TO MOTOROLA FOR ALL YOUR SE.

S·MESA SWITCHING & AMPLIFIER TRANSISTORS ·MILLIWATT TRANSISTORS ·SILICON RECTIFIERS ·ZENER DIODES

March 9, 1962

CIRCLE 189 ON READER SERVICE CARD

189

li no NlrooP

PACKAGE
WITH
2`,.LIADILLW,UI
Standard CONSOLES ·RACKS ·CHASSIS
PANELS ·CABINETS *CASES

other hobbies don't provide the
"sheer fun" of his profession, he
doesn't bother with them. He doesn't even fool with ham
radio now, although he built one of the first sets in his state while in high school. Visitors to his estate-
type home in Dallas find it strange
that it isn't filled with electronic gadgets to do various jobs. The house does contain, however, what
one source describes as one of the finest modern art collections.

SEND FOR LATEST ENGINEERING CATALOG No. 620

PREMIER METAL PRODUCTS CO.,INC.
Subsidiary of Renwell Electronics Corp. of Delaware 337 Manida Street, New York 59, New York
WESTERN SALES OFFICE: 1667 Laurel St., San Carlos, California
EXPORT DEPARTMENT: EMEC, 127 Grace Street. Plainview, New York
MFD.IN CANADA: PREMIER METAL HOUSINGS, Ltd., 5810 Smart Ave., Montreal
VISIT BOOTH 4206 I.R.E. SHOW, N.Y.C.
CIRCLE 255 ON READER SERVICE CARD

PHASE METER
Model 200AB

PRICE
$449" F.O.B. New York

Abajian Joins AIL
In Executive Post
HENRY B. ABAJIAN joins Airborne Instruments Laboratory, Deer Park, L. I., N. Y., as assistant to vice president, electronic systems and techniques division.
Abajian founded Westbury Electronics Corp. in 1952 and was the president of that company until 1959 when it merged with Intercontinental Electronics. He resigned from Intercontinental to accept the AIL post.

WRITE FOR CATALOG
Representatives in Principal Cities

· 2° absolute accuracy · Readings not affected by noise and harmonics · Frequency range 15 CPS -- 30KC · Accuracy to .01 degree with simple circuit techniques · High sensitivity on input & reference channels · Can measure in-phase & quadrature voltage components

IT CO

INDUSTRIAL TEST EQUIPMENT CO. 55 EAST 11th STREET · NEW YORK 3, N. Y.

Visit Booth #3611--I.R.E. Show, N. Y. Coliseum, March 22-29

190

CIRCLE 190 ON READER SERVICE CARD

IBM Corp. Promotes Clarence Frizzell
CLARENCE E. FRIZZELL has been promoted to manager of manufacturing in the Data Systems division of IBM Corp., Poughkeepsie, N. Y.
Frizzell, who has been general
electronics

Routine or Rush, Specify Delta Jet Freight
SOLUTION FOR FLYING FISH

08-0L eitIVM d33)1

11

Delta Air Freight can save you days and dollars on almost any commodity. Before your next surface shipment, compare costs with fast next day Delta Air Freight door-to-door delivery -- always faster, often cheaper.

EXAMPLES, DOOR-TO-DOOR

200 lbs. New Orleans to New York $29.50

300 lbs. Miami to Chicago

$28.95

manager of the division's Poughkeepsie plant, will now have responsibility for both DSD manufacturing there and at its manufacturing facility in Kingston, N. Y.
PEOPLE IN BRIEF
Systems engineering dept. of Adler Electronics Military Products div. adds five engineers: Norman Courter and Robert McCollum formerly with ITT-Kellogg; Merle Miller from The Franklin Co.; Ralph Barbato from General Dynamics Electronics; and Thomas Delaney, formerly with AT&T. Abraham Berg leaves Republic Aviation Corp. to become manufacturing mgr. at Aerotest Laboratories, Inc. William J. McGowen, ex-F. J. Stokes Corp., joins Kulicke and Soffa Mfg. Co. Inc. as mgr. of manufacturing. Joseph L. Berkowitz, previously with Paratron Corp., appointed quality control mgr. of the Eastern Div. of IMC Magnetics Corp. Charles T. Zavales from FXR Inc. to Del Electronics Corp. as v-p in charge of engineering of modulators, power supplies and transformers. J. Alan Stewart, g-m of the Sparton Electronics div., elected a v-p of Sparton Corp. Paul Schild, exBendix Corp., named mgr. of manufacturing at PRD Electronics, Inc. Chester J. Piott, formerly with Hughes Aircraft Co., now Western region mgr. for Emertron, Inc. Dan L. McGurk promoted to g-m of TRW Computers Co.
Exhibitors at the IRE Show and their booth numbers are as follows:

NEW
1/2"SQUARE METAL FILM
TRIMMER POTENTIOMETER
ENGINEERED FOR: · Low Cost ·Infinite Resolution ·Low Temperature Coefficient · High Temperature Performance · Conformance to Mil-R-22097 A
SEE THEM AT
BOOTH 2315
I.R.E. SHOW CALL OR WRITE FOR DETAILS
Si_to12.)1>

1=0 E LTA
the air line with the BIG JETS
GENERAL OFFICES: ATLANTA, GEORGIA
CIRCLE 256 ON READER SERVICE CARD

A

ADC Products

1623

AMP Inc.

2527-2531

A.P.M. Hexseal Corp.

9835

ARRA (Ant. dt Rad. Res. .Assoe.) ATR Electronics, Inc

1103 2829

Ace Electronics Associates, Inc...1921-1923 Ace Engineering 8:. Machine Co.,

Inc. Acro Products Corp.

3928-3930 4530

Acton Labs., Inc Ad-Vu Electronics Labs., Inc

3703 3609

Advanced Vacuum Products, Inc. Aeroquip Corp.

1630 4122

Aetna Electronics Corp

8007

Affiliated Manufacturers, Inc

2343

SERVOMECHANISMS/INC.
MECHATROL DIVISION
NEW YORK--Home Office 1200 Prospect Avenue Westbury, New York Area Code 516 -- EDgewood 3-600C TWX WBRY 359
CALIFORNIA - Branch Office -Mechafrol of Calif. 200 North Aviation Boulevard El Segundo, California Area Code 213 --0Regon 8-7841 TWX HAWCAL 4262

CIRCLE 191 ON READER SERVICE CARD

191

electronics REPRINT SERVICE

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1960-61 electronics Buyers' Guide Reference Section

64

Medical Electronics-- Part I: Diagnostic Measurements Part II: Diagnostic Systems and Visualization Part Ill: Therapeutic Devices Part IV: Prosthetics--Hearing Aids and Blind Guidance Devices
Part V: Prosthetics--Substitute Organs and Limbs Part VI: Observing Life Processes Part VII: Studying Life Processes Electronics in Europe
Plasma Engineering-- Part I: Generating and Heating Plasma Part II: Measuring Parameters Part Ill: Practical Applications of Plasma What's New in Semiconductors Reference Section 1961-62 electronics Buyers' Guide 1961-62 electronics Buyers' Guide Product Listings/
Manufacturers Index
Lasers: Devices & Systems-- Part I: Principles of Functioning and Laser Materials Part II: Communications, Navigation, Ranging and
Undersea Applications Part III: Military and Computer Applications. Frequency Tuning, Modulation, Demodulation and Mixing Techniques Part IV: Scientific and Medical Applications; Laser Optics;
Commercial Equipment Missile And Space Electronics Our Growing Markets
Bionics-- Part I: Electronics and the Life Sciences Part II: Animal Sensors and Electronic Analogs
Part Ill: Brain Models and Neural Nets

8 6 4 7 7 7 3 32
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ISSUE DATE July 20, 1960
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.tgastat Timing Instruments Ainslie Corp.

2343 1620

Airborne Instruments Lab Aircom, Inc. Airtlyte Electronics Co. Air-Marine Motors, Inc Airpax Electronics Inc Aladdin Industries, Inc

3310-31312128
1205 2601 2306 1924

Alden Elect. & Impulse Recording Eq

Co. Alden Products Co.

1611 1613-1615

Alfax Paper and Engineering Co., Inc 1609

Alfred Electronics

3926

Alford Mfg. Co., Inc.

1716-1718

Allegheny Electronic Chemicals Co

4053

Allen-Bradley Co Allied Chemical Corp Allied Control Co.. Inc

2138-2142 4108
2907-2909

Alpha Metals. Inc Alpha Wire Corp.

4328 4103

Amen Engineering Co American Aluminum Co

4502-4504 4041

American Electrical Heater Co

4033

American Electronic Laboratories, Inc. 3240

American Lava Corp

4401

American Molded Products Co

4233

American Optical Co American Sealants Co American Silver Co.. Inc.

3039-3939 4591
4228-4230

American Smelting and Refining Co...M-28 Amphenol Borg-Electronics Corp..1802-1810

Amperex Electronic Corp

1901-1909 2522-2524

Analab Instrument Corp

1945

Anchor Metal Co., Inc. Andrew Corp.

4022 1502-1504

Anetsberger Brothers, Inc Angelica Uniform Co

4507 Room 4500

Arthur Ansley Mfg. Co Antenna Systems, Inc.

1820 2533

ANTLAB Inc. Applied Research. Inc

3233-3235 1427

ATrhteosArEnnoglidneEenrgiinngeeCroi.ng Co

2516-42131200

Arwood Corp. Assembly Products, Inc

4024 3916-3918

Associated American Winding Machin-

ery, Inc.

4224-4226

Associated Testing Laboratories, Inc.

Audio Devices, Inc. Augat, Inc.

3927-3929 2521 2229

Automatic Electric Sales Corp.....1908-1910

Automatic Metal Products Corp

1524

Autotronies Inc.

1111

Arco Corp.

3/30-3832

Avnet Electronics Corp Axel Electronics. Inc

1R03-3807 1221

B

It a: I" Instruments, Inc
Babcock Electronics Corp Baird-Atomic, Inc.

3239 1105 3216-3218

Baleo Research Laboratories, Inc Ballantine Laboratories, Inc. Barber-Colman Co. Barnes Engineering Co

2431 3402-3404 2242- 0244 3058-3059

Barnstead Still & Sterilizer Co. Bausch & Lomb Inc

4529 3845

Beattie-Colman, Inc. Beekman Instruments, Inc.

3710 3515-3517

Beemer Engineering Co Behlman-Invar Electronics Co.

3917-43592139 9217

Belden Mfg. Co Belling & Lee Ltd. The Bendix Corp

4225-4227 2222-2232, 2329 _ ,1

Bergen Laboratories Inc James G. Biddle Co Bird Electronic Corp Birnbach Radio Co. Inc S. Blickman, Inc Bliley Electric Co

2804; 32 00 3217-3219 4419 412 0 .1318

BLUE M Electric Co Bodnar Products Corp Bogart Mfg. Corp

3013-3014 4318 1824

Bogue Electric Mfg. Co Boonton Electronics Corp.

2115-2117 3114-3116

Boonton Radio Corp

3101-3100

Boston Insulated Wire & Cable Co.....4048

Bourns, Inc.

2518-2520

Bowmar-TIC Corp. Bradley Semiconductor Corp

1508-1514 2937

WWi.llHi.amBraBdryanCdo-Rex Enka Corp.
Branson Corp.

Div.

Amer4i1c0a1n-4102 4315 2803

Branson Instruments, Inc.4005 II. Braun Tool & Instrument Co., Inc.

The Bristol Co British Radio Electronics Ltd

1619 1822

Brush Instru. Div

2616-2626

Buchanan Electrical Prods. Corp.

2341

Buckbee Mears Co

4429

Budd-Stanley Co. Inc.

1911

Bulova Watch Co

1821-1823

Burgess Battery Co.

2113

Burlingame Associates

3814-3816

Burmac Electronics Co., Inc Burndy Corp. Burmly-Escon, Inc.

1817 1333-1135
M 22

Burnell & CO.. Inc

2913-2915

Burr-Brown Research Corp.

3051

Burroughs Corp-

1211-1215

Btissmann Mfg. Div. MeGraw-Edison

Co.

2740

March 9, 1962

more than

iW L1

u

nri r

D)

RF FILTER
TYPES
FILTRON RF filters have suppressed unwanted inter ference signals virtually everywhere.., in radar, electronic and electrical equipment...manned aircraft... missiles... satellites...weapons systems... launching platforms...and shielded laboratories too! These applications have required suppression throughout the entire electro -magnetic spectrum -- from 30 cycles to over 50,000 megacycles--both broadband and narrow band. In all, more than 7,000 different types of Filtron RF interference suppression filters have been designed and manufactured under Filtrons exclusive patented circuit design. Millions are in use today.
If electrical disturbance is interfering with the satisfactory operation of your device, on land, sea or in the skies... FILTRON has a solution to meet all military specifications.

-JreeIFAelit®COMPANY, INC.
FLUSHING 55, N .Y. · CULVER CITY & PALO ALTO,CALIF. · DAYTON ,OHIO

RF INTERFERENCE FILTERS · RADAR PULSE PACKAGES · PULSE FORMING NETWORKS SPECIALTY CAPACITORS · DELAY LINES
RF INTERFERENCE TESTING · SYSTEMS ENGINEERING
FOR IMMEDIATE ACTION CALL 212-HI 5-7000 SEE THE COMPLETE FILTRON LINE AT IRE BOOTH 1812-14

CIRCLE 195 ON READER SERVICE CARD

195

C

SOUTHERN ELECTRONICS .BURBANK CALIF.
121X12ReD±S%100VOC
PAY-2X12-5-1004 85·
SEC 1200

SOUTHERN ELECTRONICS BURBANK CM. .0,·· <····elt0·1

eTT toovoc

egro«

rneT

,·/.,

SOUTHERN ELECTRON IC , BURBANK C AL L AT PAY 1.10 ,o-
AlII M BA
POLYGON

Capacitors for
NO COMPROMISE
Circuit Design

Unusual requirements in capacitance, tolerance, case size or configuration no longer need compromise your circuit designs. SOUTHERN ELECTRONICS' engineers are experienced in solving these problems to the extent that non-standard capacitors have become routine at SEC.
SEC has developed multiple block capacitors that are now saving space and weight in aproduction missile. Two 12mfd capacitors were designed to take less space than one, with improved electrical characteristics. In another application, SEC eliminated 6tubular capacitors, utilizing asingle can, 6terminals and acommon ground. Result: Room for additional components, easier wiring, and a less expensive component.
SEC, in addition to designing special capacitors to save weight and space, has developed dual-dielectrics to solve unusual temperature coefficient problems, and has introduced special dielectrics and oils for extreme high temperature and high voltage applications.
This engineering know-how has resulted in the use of SEC capacitors in twelve U.S. missiles, analog computers, and many radar and communications services.
SEC capacitors are manufactured in a wide range of capacitance to meet your needs from 100mmf to any higher value, with tolerances as low as 0.1%. They are made under unusually critical quality control standards, and meet or exceed the most rigid MIL-SPECS.

APoOurclebt.i

See us at I.R.E. March 26-29 Booth =2925 N.Y. Coliseum

AAVCON
'nil WY
SOUTHERN ·ELECTRON ICS
Oet.etirk I?

CBS Laboratories

3226-3228

C dr K Components Inc
"rs Cori).
C W S Waveguide Corp

1721 1400 1311-1313

California Technical Industries 3407-34011

r_amblock Corp. Cambridge Thermionic Corp

9118 '219

Cannon Electric Co

2727-2731

Capitol Radio Eng. Inst., Inc The Capitol Machine & Switch Co

4326 "11311

The Carborundum Co. Carpenter Mfg. Co.,Inc. Carter Mfg. Corp

2)41-21143 4520 N1-5

Carter Parts Co

2109

CECO Community Engineering Corp .1926

CELCO

--i.14

Ceramics International Corp

20011

Ceramaseal, Inc.

1223

Cetron Electronic Corp

M-4

Chassis-Trak, Inc.

4001

Chicago Dynamic Industries. Inc

2114

Chlorivolt Corp.

1124

Christie Electric Corp Cinch Mfg. Co

2911 ',537-2540

Clairex Corp.

1113

C. P. Clare & Co. Cleveland Metal Specialties Co.

2218-2220 2007

Clevite Transistor

2616-2626

Sigmund Cohn Corp Coll Winding Equipment Co

4322-4324 4426 A & B

Colenta n Machine Co., Inc

4020

Collins 1.:1,q4ronics, Inc

1319

Collins Radio Co

2120-2124. 3412-3418 ·

Columbia Technical Corp

1116

Columbus Electric Mfg. Co

1112

Columbus Electronics Corp

1733

Comer Electric Co The Combined Book Exhibit. Inc

1622 4115

Cominco Products, Inc.

4408

Computer Control Co., Inc

3408-3410

Computer Diode Corp *Computer-Measurements Co.

2144 3800-3808

Computer Systems, Inc.

3835-3837

Confirming Matrix Corp.

4139

Consolidated Avionics Corp.

1324

Consolidated Resistance Co. of America.

Inc. The Constanta Co. of Canada Ltd

' 1107

Continental Connector Corp Controls Co. of America

"307-230f , 1727 1731

Contronics, Inc.

31142

CCoooolr-sFiPnorCcoerlpa.in Co.

2225-2M2-277

Cornell-Dubilier Electronics Corning Glass Works

2721-272 5 2619-' ,6·' -,

Cowan Publishing Corp Croshy-Teletronics Corp.

412e 3617

Crown Tool and Instrument. Inc.

4532

Crucible Steel Co. of America

2827

Crystalonics. Inc. Cubic Corp. James Cunningham Son & (7o.. Inc

·I'..": 2337

Curtiss-Wright Corp.

1521-152::

Cutler-Hammer. Inc.

D

Dage Electric Co., Inc. The Daven Co. Dale Electronics, Inc. Daystrom, Inc.

2435 2717-2719 1912-1914 1702-171 0 1801-18M9

Dearborn Electronic Laboratories, Inc 2929

DeJur-Amsco Corp.

2605

Del Electronics Corp

1917-1919

Delevan Electronics Corp

2000

DDeellttiameC,oilIsn,c. Inc

2.! I.!

DeMornay-Bonardi

3112-3113

Japan Electric Industry. Dempa

Shinbun, Inc.

2808

Derivation & Tabulation Inc.
Di/An Controls, Inc. Dialight Corp. Diamonite Products Mfg. Diehl Mfg. Co

Associates 4123

.W011

2829 -2'1

Co

4105 1913-1915

Dielectric Products Engineering Co.,

Inc.

2136

Digital Equipment Corp Douglas Microwave Co.. Inc

3060 ·)241-2243

Dow Corning Corp

4309-4311

Drake Mfg. Co Wilbur B. Driver Co.

2211 4301A-4301B

Driver-Harris Co.

4414

E. I. duPont de Nemours & Co. (4I3n1c7-)4319

4333-4335

DYMEC Div. of Hewlett-Packard30C1o5.-3017

Dyne-Empire. Inc. Dynamic Gear Co., Inc Dynatran Electronics Corp Dytronics Co.

3406 M-12 q935 3019

IE

150 WEST CYPRESS AVENUE BURBANK ,CALIFORNIA

EH Research Laboratories, Inc

EMI/US. Ltd.

·

ESC Electronic-4 Corp

n"7o,211-

196

CIRCLE 196 ON READER SERVICE CARD

twi nax
triax
Whether your demands are for coax, twinax or triaxial fittings, when you specify
rf connectors
specify ...
automatic
METAL PRODUCTS CORPORATION
Leaders in the design and manufacture of RF connectors and components
323 Berry Street, B'klyn 11, N. Y.
Telephone: EVergreen 8-6057
CIRCLE 257 ON READER SERVICE CARD
electronics

Ebauches S.A

3022

Edgerton, Germeshausen & Grier, Inc. 3244

Eitel-McCullough, Inc.

2509-2513

ELCO Corp.

1420-1422

Electra Mfg. Co.

2530-2532

Electralab Printed Electronics Corp....2134

Electrical Industries Electro Devices Inc

2526-2528 4104

Electro Instruments, Inc.

3912-3914

Electro International, Inc. Electro -Mec Instrument Corp. Electro -Mechanical Instrument Co

3944 2216 1231

The Electro Motive Mfg. Co., Inc

9833

Electro Scientific Industries, Inc...3016-3020

Electro -Voice, Inc.

1506

Electronic Associates, Inc.

3712-3718

Electronic Engineers Master-eem

4424

Electronic Equipment Engineering

4415

Electronic Industries

4201-4203

Electronic Instrument Co., Inc. (BIC())

Electronic Measurements Co., Inc. .2410.32740111

Electronic Measurements Corp.

3941

Electronic Mechanics, Inc.4204A

Electronic News

4112-4114

Electronic Representatives Ass'n.

Electronic Research Assoc., EIRnAc R2o8o30m-2$81392

Electronic Specialty Co.

2234-2238

ELECTRONICS Elgin National Watch Co.

4314 2519

Elin Div. International Electronic Re-

search Corp

300°

Emerson & Cuming. Inc.

42° 9

Empire Devices Products Corp....3505-3507

Engelhard Industries, Inc.

4403-4411

Engineered Electronics Co. Epco Products. Inc.

1425 2839

Epsco Inc. Equipto Electronics Corp.

1217 & 3915 4240

L. M. Ericsson Corp.

2205

Erie Resistor Corp. Eubanks Engineering Co. Eugene Engineering Co., Inc. Exact Electronics, Inc.

$212-3214 4035 4525

M-26, South America Room

FMC Corp.

4030

Fairchild Camera & Instrument Corp

Falstrom Co.

24730211--42372135

Fansteel Metallurgical Corp

4050-4052

Federal Mfg. and Engineering Corp....3224

Federal Tool Engineering Co

.4428

Fen-Thread Machine Co., Inc

4231

Fenwal Electronics. Inc

1102

Ferris Instrument Co.

3801

Ferroxcube Corp. of America

2438

Film Resistors, Inc

M-3

Filmohm Corp.

2327

Filtors, Inc.

2412

Filtron Co.. Inc

1812-1814

Fitchburg Engineering Corp

4535

John Fluke Mfg. Co., Inc.

3229-3231

Forma Scientific. Inc

4517

Bernard Franklin Co.. Inc

1-1

Franklin Electronics Inc

5838

Freed Transformer Co., Inc

2821-2823

Frontier Electronics Div. International

Resistance Co.

3010

G

G-L Electronics Co.. Inc G-M Laboratories, Inc. GPS Instrument Co., Inc The Gamewell Co. Gardner-Denver Co.

1721 2105 3040 2834 4524-4526

Garlock Inc. Gates Radio Co General Aniline & Film Corp

2814-2816 3608-3610
4106

General Applied Science Labs., Inc

3946

General Atronics Corp

3315-3317

General Computers, Inc

3937

General Dynamics Corp

4010-4012

General Electric Co General Findings Inc

2902-2944 4029

General Instrument Corp General Magnetic Corp

1212-1224 1902

General Mills Inc

3824-3S26

Delco Radio Div. General Motors Corp..1423 New Departure, Div. of General Motors

General Plastics Corp

2434-42143326

General Precision, Inc General Radio Co.

1501-1511 3201-3208

General Resistance. Inc. General Thermodynamics Corp

3026 3909

General Time Corp The Geotechnical Corp

M-16-17 1839

Gertsch Products, Inc Glass -Tite Industries, Inc.

3706-370$ 1628

Glasseal Products Co., Inc Globe Industries. Inc Goe Engineering CO

1519 1100-1101
4006

John Gombos Co., Inc

2818-2820

The B. F. Goodrich Co Goodyear Aircraft Corp Gordos Corp.

3041 3123 1123

W. L. Gore & Associates. Inc Gorham Electronics

4121 2310-2312

Gorman Machine Corp.

4o46

Gould National Batteries, Inc.

M-24-25

CIRCLE 197 ON READER SERVICE CARD

How's your COMFORT INDEX* this month?

Bob Snowman, foreman in the GENERAL ELECTRIC
Atomic Power Equipment Department,
says the ideal COMFORT INDEX in Santa Clara County means year 'round fishing plus excellent working conditions. "On weekends, Ihead for the beach and start surf fishing within an hour. It doesn't matter whether it's December or August, thanks to the mild climate around here:'
Both management and employees have alot to gain from the mild Santa Clara County climate. Productivity goes up as your COMFORT INDEX approaches the ideal level. But you get more than exceptional livability. This unique location at the southern tip of San Francisco Bay places Santa Clara County right at the market and transportation center of the West.
First, compare the COMFORT INDEX of each potential industrial site. When you add the other advantages, every fact points to SANTA CLARA COUNTY--for maximum livability and productivity.

*COMFORT INDEX--One of many terms used to describe the exact point at which the climate of aparticular area
approaches an ideal combination of moderate tem peratu re, low humidity.

SEND TODAY for these two booklets and bring your plant site research file up to

date: "What Do You Mean -- COMFORT

tINDEX?" and "NEW INDUSTRY SPEAKS".

· i1 7,2:.."d

GREATER SAN JOSE
CHAMBER OF COMMERCE Dept. 48, San Jose 13, California

fit

.···
SAN JOSE, CALIFORNiA

·
SANTA CLARA : COUNTY

··· ..... ·

198

"WE WILL
BUILD AROUND TOP-GRADE

Grant Pulley & Hardware Corp. tirayhill, Inc. Great Eastern Metal Products Co Green Instrument Co.. Inc Greibach Instruments Corp Gremar Mfg. Co., Inc Cries Reproducer Corp. Guardian Electric Mfg. t'o Gudebrod Bros. Silk Co., Inc The Gudeman Co Guidance Controls Corp

4330 2501 4117 4332 "212 4054 25112-2504 4032 oc,0 1; 1106

TECHNICAL TALENT"
E. 6. UHL. President, Fairchild Stratos Corporation
·
Can a simple, straightforward statement capture the spirit of acomplex and dynamic situation? We believe it can.
·
Today, the revitalized divisions comprising Fairchild Stratos are not static, crusted organizations. They are living, growing, achieving forces of human thought and energy. There is a new and growing boldness and vision, a deep personal Involvement, and a basic sense of "becoming". Across many disciplines, through each location, in a sound diversity of important programs, there are these common hallmarks:
True technical excellence which comes from talented individuals and small elite groups rather

H

Halliburton Enterprises. Inc

4105-4510

Hardwick. Hindle, Inc

2842

HIalrarremla,n-IKnacr. don, Inc.

32813073

Harrison Laboratories The Hart Mfg. Co The Hartwell Corp

1429-1431 1635 4020

HHaasrtvienyg-sW-eRlalysdiEslte,ctrInocn.ics, Inc. Hayden Publishing Co

331321°3 4-116-4418

Tin. )1. W. Ilaydon Co

1405-1407

The Ilaydon Instrument Co.

3012

Ilaydon Switch. Inc

121 1,

C. I. Haves, Inc

4523

Heinemann Electric Co

2541- 0543

11141-Coil Corp.

4509

Helipot Div. Beckman Instruments.12I0n1c-121)3

Hermetic Seal Corp. Hevi-Duty Electric Co Hewlett-Packard Co.

11,1 2915 3205-3215

Hexacon Electric Co

4002

The Hickok Electrical Instrument36C16o-361 5

3940

Hi-G Inc. Hill Electronics Inc Hitemp Wires Co Hoffman Electronics Corp. Holt Instrument Laboratories Hotpack Corp. Houston Instrument Corp

2512 1219 4216 1515-1520 3814-3516 '3846-3848 3029

Hoyt Electrical Instrument Works. Inc. 2233

Hudson Tool & Die CO., Inc.

4310-4312

Huggins Laboratories, Inc

2334-2326

Hughes Semiconductors 111111 Corp.

2501-42510176

u u
u PLUS
to1 + 18 PLUS = more than 18 years of engineering experience and production know-how in manufacturing advanced, reliable microwave components and assemblies. Belz Industries' ability to meet critical requirements of military and industrial electronics firms has been consistently proven for almost two decades. At Belz, skilled personnel, using advanced mechanical and electrical testing equipment ... assures strict adherence to your specifications.

than massive mediocrity.
Involvement of technically insightful management at primary points of decision, day to day.
Recognition and reward of top individual contributors who are challenged and stimulated to truly professional creativity.
Aggressive program direction, evaluation and control.

I

Illinois Tool Works Inc

1617

Illinois Water Treatment Co

4238

Indiana General Corp.

1310-1316

Induction Heating Corp

4043

Industrial Electronic Hardware Corp 2407

Industrial Instruments, Inc

3225-3227

Industrial Test Equipment Co

3611

Industrial Timer Corp

1319-1323

Ingersoll Products Div. Borg-War4n2e1r1-4215

Inland Motor Corp Instron Engineering Corp Instrument Specialties Co.. Inc Instruments for Industry. Inc Ins.truments Publishing Co.. Inc

1030 053
4313 1424 3705-43370079

MICROWAVE COMPONEN TS, ELECTRO MECHANICAL
AND MECHA NICAL
ASSEMBLIES

This Is Fairchild Stratos. A growing and dynamic complex of talented individuals. Fully integrated small-to-medium sized divisions large enough for major primes, small enough for stateof-the-art subs. The result is a whole that is greater than and

International Eastern Co

4034

IER(' Div. International Electronic Re-

search Corp.

15?"

IInertia t·

1 Instrument s Inc

",·11

International Pump & Machine Works 4219

International Rectifier Corp.

.901-29115

International Resistanee Co

2425-2432

International Telephone & Telegraph

Corp. Itck Corp.

223T151r211t105I-.-22:nn_15iI21la90-n

Facilities expressly designed for precision work in aluminum and brass, produce a complexity of quality products to

different from the sum of its parts.

critical tolerances.

Belz is geared

FAIRCHILCP

r SIT-RA -

s

11A6E1?STOWN

lvi D.

Divisions:
Aircraft-Missiles Hagerstown, Md.

J-B-T Instruments, Inc. JFD Electronics Corp. James Electronics, Inc Jennings Radio Mfg. Corp Jerrold Electronics Corp Jettron Products Inc JJuolniaethRaenseMafrgc.h CLoaboratories,

Inc.

122i; 2100 1,11-1815 1904-Taal M-10 4118 3238

Kaweeki Chemical Company Kay Electric Co Keithley Instruments, Inc Kemtron Electron Produets, lite Ken-Troll Corp. Kepeo, Inc. ,,

4127 3a12-3515
'1210 1025 2631i-2038

to produce single unit or volume production to the same critical standards.
Inquiries concerning development · and/or manufacturing of microwave assemblies and system components are welcome. For descriptive brochure, or quotation on specific production prob. lems, write, wire or call.

Aircraft Service Saint Augustine, Fla.
Electronic Systems Wyandanch, L.I., N.Y.
Stratos Bay Shore, L.I., N.Y.

Nester Solder Co

4221

Keuffel & Esser Co

4511

Kewaunne Mfg, Co

4044

Walter Kidde & Co., Inc

12'-'

K 1N TEL Div. Cohn Electronics. :hI;ol:c,·.

7

Kings Electronics Co.. Inc Kingsley Machine Co. Mathias Klein & Sons, Inc

'221 -·>···"; 421' 443ll

INC) 1-1

Fi I

clivinion or EL-11,01,11CS.

89 UNION STREET · MINEOLA, N.Y. Pioneer 2-1010

CIRCLE 258 ON READER SERVICE CARD

Knight Electronics Corp

3825-3827

The James Knights Co. Krangel Mfg. Co., Inc.

2706 4417

Krohn-Hite Corp.

3711-3713

Kuhnke Electrotechnische Fabrik G.m.-

b.H.

M-6

Kulicke and Soffa Mfg. Co., Inc.

4129

Kulka Electric Corp.

2302

Kupfrian Mfg. Div. Robinson Technical

Products Inc.

2607

Kurman Electric Co

2135

MISSILE -SPACE
ENGINEERS and SCIENTISTS

L

Laboratory for Electronics, Inc 3003-M05

Lambda Electronics Corp Land Air. Inc

3715-3717 2317-2319
1600

Landis & Gyr, Inc

3038

LaPointe Industries Inc

2102

Larson Instrument Co

3234

Lavoie Laboratories. Inc

3815-3817

Leach Corp. Leech & Garner Co

1900 4029

Leeds & Northrup Co

1728

Leesona Corp.

4325-4327

LEL Inc. Lelanite Corp.

2106-2108 4008

Lepel High Frequency Labs. Inc

4217

LIECO. Inc.

2433

Lindberg Engineering Co.

4229

Ling-Temeo-Vought. Inc.

109-3513

The Lionel Littelfuse

I Corpn . c.2913 912-1 1900

Little Falls Alloys. Inc

4042

Litton Industries. Inc.. .1610-1618.1709-1717

Loral Electronics Corp

NF -14

Lord Mfg. Co Lumatron Electronics, Inc.

2923-2935 3032

M

MM Electronic Enclosures. Inc MRC Mfg. Corp Machlett Labs.. Inc MacLeod & Hanopol. Inc. Magnecraft Electric Co Magnetic Metals Co P. R. Mallory & Co Inc Manson Laboratories, Inc Marconi Instruments Markem Machine Co liarlane Development Co., Inc Martin-Marietta Corp.

4016 4130 2611-2612 3613 2523 1632 1410-1412 3054-3055 3401-3405 4210-4212 4505 3905-3907

Massa Div. Cohn Electronics, Inc. 3601-3603

Master Specialties Co

M 01

Maurey Instrument Corp

1719

Maxson Electronics Corp.

1208-1210

McCoy Electronics Co

2215

McDowell Electronics Inc

4120

McGraw-Hill Book Co., Inc

4331

McGraw-Hill Publishing Co., Inc. .4314-4316

McLean Engineering Labs

1624

McMillan Industrial Corp

3932

Measurements, A McGraw-Edison Div

Adolf Meller Co

$501-43051038

Ilelpar, Inc.

2101

Menlo Park Engineering

3025

ltlepeo, Inc.

2802-2804

Merck & Co.. Inc

4513

Merrimac Research and Development

Inc.

Metcom. Inc.

Metex Electronic Corp

MMeettrhoondiex EIlnecc.tronics. Inc

Microdot. Inc.

Micro Gee Products, Inc

Mierolab

Micromech Mfg. Corp

Microtran Co.. Inc.

Microwave Microwave

Associates, Inc. Development

Labs.-,

2744 4431 2741 3942 1207-1209 3842 M 13 4038 2314 24I0n2c.-2404

James Millen Mfg. Co., Inc

2131-22511353

Millivac Instruments. Inc.

3305

Minneapolis-Honeywell Regulator Co.

2202-2210 Minnesota Mining & Mfg. Co. Magnetic

Products Div.

1204

Minnesota Mining & Mfg. Co. Mineom

Div. Mitronics Inc.

3243A-3243B 19416

Mnemotron Corp.

3009

Molecu-Wire Corp

4243

Monsanto Chemical Co

4025-4027

F. L. Moseley Co Donald P. Mossman, Inc.

3106-3108 2240

Motee Industries, Inc.

3028

Motor Generator Corp.

1927

Motorola Communications and Elec-

tronics Inc.

3027

Motorola Semiconductor Products, Inc

Mueon Corp Mnirhead & Co. Ltd. Murata Mfg. Co. Ltd. Myealex Corp. of America

1117-21810178 3230 1637
2615-2617

N
N J E Corp

2002

The Aircraft-Missiles Division needs excep-
tional talent to spearhead accelerated growth into selected, key aerospace areas such as satellite and reentry systems, reconnaissance-surveillance systems, communications and power for space applications, and advanced missile systems.
ADVANCED SYSTEMS ENGINEERING
Manpower Requirements--College graduates with 4-10 years ificreasingly more responsible experience in depth in space, reentry vehicle and satellite programs in control systems, guidance systems, sensor systems, communications systems, propulsion systems, data systems, computers (airborne), vehicle systems (reentry and space), recovery systems, command systems.
SYSTEMS ENGINEERING
Manpower Requirements--College graduates with 5-10 years increasingly responsible experience in depth the last several years of which must have been in systems engineering in one or more of the following areas--control systems, guidance systems, sensor systems, communications systems, propulsion systems, data systems, computers (airborne), vehicle systems (reentry and space), recovery systems, command systems.
ELECTRONICS ENGINEERING
Manpower Requirements--College graduates with 4-10 years progressively more responsible experience in depth preferably as related to ballistic missiles, space and reentry vehicles, satellites and associated systems in such areas as data systems, radar, telemetry, tracking equipment, sensor equipment, guidpaonrcte eq(uciopmmmenatn.d and inertial), control, computers, ground sup-
ENGINEERING TECHNOLOGIES
Manpower Requirements--College graduates with 3-10 years of increasingly more responsible experience demonstrating ability to handle problems in one or more of the following areas-- heat transfer-fluid flow, orbital mechanics, trajectory analysis, aerophysics, magneto hydrodynamics, applied mechanics, aerothermodynamics, space dynamics, numerical analysis, calculus of variations, statistics and information theory.
DESIGN ENGINEERING
Manpower Requirements--College graduates with 5-10 years of progressively more responsible and complex subsystem design experience and demonstrated excellence of capacity in handling such assignments in one or more of the following areas-- propulsion, servomechanisms, vehicle structures, space power systems, electrical power and distribution, recovery systems, ground support equipment and environmental control. For prompt information regarding these openings, inquire of C. A. Webb, Jr., Manager, Professional Relations
eemxtincHILizo lbs-rrzt.et-rcos
AIRCRAFT--MISSILES DIVISION
HAGERSTOVVN MD.
An equal opportunity employer

March 9, 1962 199

Siçg m-ito
The new Electronic Cooling Unit SCU-825
Industry needed it... so... Sumitomo developed it

NRC Equipment Corp

4425-4427

The Narda Microwave Corp National Beryllia Corp

38°9-3418)14 35

The National Cash National Co., Inc

Regist1e40r1-C1o403,

3843

National Lead Co.

"18- 4 3582120

National Semiconductor Corp

1723

Navigation Computer Corp

3812

New Hermes Engraving Machine Corp 4124

The J. M. Ney Company Nikon, Inc. Non-Linear Systems, Inc North American Electronics, Inc

-113 3047-8049
:131 41::421983

North Atlantic Industries, Inc North Electric Co NNoorrtthheaHsitllsSciEelneticftirconCicosr,p Inc

9126-2128

Northeastern Engineering, Inc

232 2ml :114n2

Nytronics, Inc.

M

(SCU-825)

(Electronic Cooling Unit\ 1 for special use

Sumitomo Electric, one of Japan's leading manufacturers of electric wires and cables, has recently developed the new Electronic Cooling Unit SCU-825, offering unsurpassed cooling

functions at lower operating costs. The SCU-825 is ideal for

spot cooling small parts such as power transistors, silicon

rectifiers, resistors and vacuum tubes which cannot be effec-

tively cooled otherwise. Special miniature cooling units are

especially useful for outdoor electrical equipment during hot

weather. Outstanding features of the SCU-825: 1) Cooling is easily localized yet provides highest efficiency

2) No moving parts, noise or vibration

3) No repairs or replacement of parts necessary

4) Cooling temperature can be freely controlled below ambient

temperature

5) No interfering electric waves emitted

6) Easy to install and convenient

to use

70

(SCU-825) Hot Side 50°C

60

As today's leaders and tomorrow's

pioneers in electronic research and

50

applications, Sumitomo Electric

is pledged to dedicate its vast

40

experience and technology towards

better living through its electronic

30

engineering.

e b
., ·`,"`

20

Leaders of Today....

--

10
Pioneers of Tomorrow

SUMITOMO ELECTRIC INDUSTRIES, LTD.
1-lead Office: No. 60, Okijima Nlinamino-cho, Konohana-ku, Osaka, Japan

10

20

30

Input Current IDC Amp

o
Ohmite Mfg. Co Optimized Devices, Inc Ortho Industries, Inc Oryx Co. John Oster Mfg. Co

2333-2335 1036 1626 4107
1330-1332

P

PCA Electronics Inc PRD Electronics, Inc Pacific Semiconductors Inc

1327 3602-361)6 1225-1227

Packard Bell Computer Corp

3911-3913

l'age Communications Engineers. Inc-3924

Panduit Corp.

41)11

Panoramic Electronics, Inc Par-Metal Products Corp.

3301-3303 4302-4304

Parker-Hannifin Corp. l'arker Seal Co

4236 4236

Penn Engineering & Mfg. Corp.

4119

Penta Laboratories, Inc

2736

Perfection Mica Co.

4420

Perkin Electronics Corp

1416-1418

Optical Maser Dept. JPaeprakninR-oElommer#267

Vernistat Div. Perkin-Elmer Corp

2207

Phaostron Instrument & Electronic14C30o-1432

Phelps Dodge Copper Products Corp. 4055-4056

Piffle() Corp.

1302-1308 & Room 4242

Phillips Control Co Photocircuits Corp.

2340 2201-2203

PIC Design Corp Pickard & Burns, Inc Plastic Capacitors. Inc Plastoid Corp.

1117 3030 2738 4128

Polarad Electronics Corp Polyphase Instrument Co.

3302-3308 2839

Pomona Electronics Co.. Inc. Popper & Sons, Inc. H. K. Porter Co., Inc Potter & Brumfield. Inc Potter Instrument Co., Inc Power Designs Inc. Power Sources. Inc Powertron Ultrasonics Corp. Precision Apparatus Co., Inc. Precision Instrument Co

1S19 4125 4036 2702-2704 3702-3704 1116 2236 4106 1915 2037

Precision Scientific Co. Premier Metal Products

2050-2(152 Co..420I4n1c3.-4206

Premier Microwave Corp Prentice-Hall. Inc. Presin Co. Price Electric Corp Probescope Co. Inc The Pyle-National Co. Pyrofilm Resistor Co.. Inc

2945 4122 3943 0409 3828 2112 2104

CIRCLE 259 ON READER SERVICE CARD

Quan-Tech Laboratories, Inc

3023

VLF TRACKING RECEIVER
FOR PRECISION MEASUREMENT, CALIBRATION AND CONTROL OF TIME AND FREQUENCY

Rates precision oscillators to a part in 109 in minutes; parts in 10" in a day
Microsecond Stability · All Solid State Coherent AGC · Automatic Phase Tracking
Tracks ALL VLF Stations · Available Now

MODEL 599CS

TEXT RAN CORPORATION Box 9207 Austin Il, Texas

200

CIRCLE 200 ON READER SERVICE CARD

REF Dynamics Corp

4529

RLC Electronics, Inc

2917

RS Electronics Corp

233$

Radiation at Stanford Radio Corp. of America

3333 11670012--1176(0187

Radio Engineering Laboral ones. 13I0nc1.-1303

Radio Frequency Labs, Inc

3115-3119

Radio Materials Co. Div. of P. R Mal-

lory & Co. Inc

1414

Rawson Electrical Instr. Co

3311

Raychem Corp.

4503

Raytheon Co.

2602-24601248

Reeves-Hoffman Div., Dynamics Cori).

of America

1109

Reeves Instrument Corp

1202. 1301-1309

Reeves Sounderaft Corp

1326

Renbrandt, Inc.

1104

Reon Resistor Corp

1114

Republic Aviation Corp. It been) Electronics

3920 2635-2637

electronics

HOW TO SELL TO THE GOVERNMENT

Key reference is your 1961 electronics Buyers' Guide and Reference Issue. Your 1961 EBG Reference Section includes a survey of military and government procurement methods with phone numbers, addresses and procurement officers' names. EBG lists main government books, pamphlets, and periodicals on the subject, and the military and government agencies that buy electronic equipment and services and what these agencies buy... plus a helpful run-down on specifications for this important
segment of the electronics industry. And that's only part of the Reference Section; only part of your 1961 EBG.
MORE EBG EXCLUSIVES
1. Actual name of the man to call on in each company for key information about prices, delivery dates, specifications, etc.-- a first-time exclusive.
2. Company statistics--another new exclusive--that give you dollar-volume, number of engineers, number of employees, etc., for each company listed.

3. Complete index of editorial articles that have appeared in electronics during the last 12 months.

4. Abstracts of feature articles listed in the editorial index from electronics. Plus these EBG features:

· Specific product listings--accurate, complete, authentic, more than 3,000 of them cross-indexed.

· Registered trade name index--lets you find the manufacturer of a product when you know it only by its trade name.

· Local sales office listing--makes it easy to find name, address and phone number of a manufacturer's nearest sales office.
These are all factors that make your EBG the most essential buying and selling refer-
ence in the electronics industry. Keep your EBG close at hand--it will pay off in more ways than one.

%iUcYtEroRnSi'cs UI DE

electronics buyers' guide and reference issue The Basic Buying Guide in Electronics since 1941

118P

A MCGRAW-HILL PUBLICATION 330 West 42nd St., New York 36, N. Y.

March 9, 1962 201

NEW CAREER POSITIONS WITH PAN AM AT CAPE CANAVERAL

Pan American, as prime contractor to the U.S.Air Force, has fulfilled the responsibility for planning, engineering, operating and maintaining Cape Canaveral and the Atlantic Missile Range since 1953.
Pan American scientists and engineers have participated intimately in all stages of the national programs from early V-2 tests to present space explorations-
World-wide operational facilities plus broad experience have enabled Pan American to meet the requirements of the network of missile tracking stations on ships and islands spread over a large portion of the
globe. The increasing capabilities of missiles being devel-
oped and tested are demanding new solutions to range instrumentation requirements.
Technically respected people with leadership ability are needed now for assignments in these areas.
In addition to normal company benefits, Pan Am offers the unique advantage of a 90% world-wide airtravel discount. You and your family will enjoy living in Florida, a progressive state, with an unparalleled vacation setting of sunshine and seashores.

Specific areas of interest for fully qualified engineers and scientists with BS/MS/PHD degrees are in: Range Instrumentation
CW Roder Pulse Radar Infrared Telemetry Optics Cornmunications
Data Handling Range Planning Facilities Planning Facilities Engineering Advanced Planning

You are invited to send your resume in confidence to David A. Bruner, Personnel Manager, Guided Missiles Range Division, Pan American World Airways, Inc., P. 0. Box 4336, Patrick Air Force Base, Florida.

11111imille GUIDED MISSILES RANGE DIVISION

1100113.18*
me
202

PATRICK AIR FORCE BASE, FLORIDA
An Equal Opportunity Employer

Joint F. Rider Publisher, inc.

4510

Itixon Electronics, hie

3034-3035

Robinson Technical Products, 25I0nc6.-2508

Rochard Electronique

43014336

Rogan Brothers Inc. Rohde & Schwarz Sales
Inc.

Co. (U.S.A.) Theater 3000A Theater 3111v

Rotating Components, Inc.

1234

Rotron Mfg. Co., Inc

2427-224219,

Rowan Controller Co.

2132

The Rumrill Co.6 Rutherford Electronics Co

233883179

Rye Sound Corp. s

9

Sage Electronics Corp Sage Laboratories, Inc Howard W .Sains & Co., Inc4037 Sanborn Co. SSaanndeFresrnAasnsdocoiaEtleesc,triIcncMfg. Co Sangamo Electric Co Sarkes Tarjan, Inc Schutter Microwave Lori)

°12131151 33(110231-.3:.,,1t 20543 2535-2536 2311-2532153 1730-1732
.1726

Scientific Atlanta, Inc H. H. Scott, Inc.. .3922. Scandinavia R(o4o16m)

Sec« Metals Corp. Security Devices Laboratory Sealectro Corp. Seg Electronics Co., Inc Sensitive Research Instrument

4004 2344 Corp.

SSeerrvvoomeCcohrapn.isomfs,AmIenrci. ca

33461121:3:.3;24t3;11;1 5;4

Shalleross Mfg. Co.

Shielding. Div. The Sibley Co Sierra Electronic

of Shleldtron. 30I6n1c-.3062 1108
Corp. Div. of Ph3i0l31c-o31133

SSigma Instruments. Inc ignal-AFCEA
Silicon Transistor Corp. Simberkoff Sales Co1119 SSiinmcplsaiorn REaldeictoriLcabCso. Inc.

2628-21130 4212311218
2321 -1233:23

Skydyne, Inc. Sliding Mechanisms, Inc Slip Ring Co. of America

4114 1511135

SHoelramaEnlecHtr.icSmiCtoh.. Inc Solid State Products. Inc

2815 22.711n184 22881109

Solitron Devices, Inc Sonobond Corp.

2918 4233

Sonotone Corp. SSoorneynsCeonrp&. Co..' Inc Southco Div., South Chester Corp. Southern Electronics Corp Space Technology Labs.. Inc.

32:1 (2,e1)0 4:401 4412 2923 3846

Spaulding Fibre Co. Inc.

Sspneeceitfriocl PErloedcutcrtonsics Corp

41110261-11-:1130262

Sperry Rand Corp Sprague Electric Co

22942126.-2247243.3-24703269

Stancor Electronics, Inc

Standard Electrical Products Co

1115

Standard Metals Corp

41 4139

International Electronics Staalred LParbess.sedIncSteel Co

Div.,

St2a8n3d8--2824003 2,,,Fi40

Sterling Instrument Div., Designatron- `.)

ies. Inc. Stevens-Arnold Inc Stevens Mfg. Co., Inc. tSlteeowragret SSttevaemnpsinMgfgC.o.Co., Inc

29211 143:2135:
421S-42211

Herman H. Sticht CO., Inc Edwin B.Stimpson Co., Inc

1e23n6

Strand Labs. Inc

1001

Sumitomo Shoji, N. J. Inc

2130

Sumitomo Elec. Industries. Ltd ...... 2130

The Superior Electric Co

272"-2732

Swiss Jewel Co4040

Switeheraft, Inc.

"825

Sylvania Electric Products. Inc....224312:2i--22343223

SSivnuttrhoanniec CIonrspt.ruments, Inc

4842291i431823 328(0)31

Systron-Donner Corp.

TRW Components Co

1119-1120

Tech Laboratories, Inc Tech-Ohm Electronics, Inc

2120 2008

Technical Appliance Corp.

3908

Technical Devices Co

4234

The Technical Material Corp.

3901-3903

Technical \Vire Products, Inc

4007

Tekt ronix. Inc. Telex Inc.

3n02-3508 1629-1631

Telonie Industries Inc

3043-3045

Telrex Labs

1317

Temperature Engineering Corp M. Ten Bosch, Inc Tenney Engineering, Inc

3044 1 99 3118-3121

Tensor Electric Development Co., Inc.. 31)24

Texas Instruments Incorporated 1409-1421

The Thomas & Betts Co., inc

1627

Thomas Electronics, Inc.

2919

electronics

.1······ ·ee--·%>:\

ek`.

>4 ·, ·

··.-`·.S·.:.."r.e-:\e>e`t`,s·

the Tiniest 4,`,,z..·ee
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/SHAFT

CONNECTIONS ,,,,,,,,,,,,,,,

,

it's read more by all 4!
electronics is specially edited to keep you informed about the entire industry. With special issues on Electronic Markets, Modern Microwaves, Search and Probe Systems, and other reports you'll want to file and keep
subscribe today to electronics
Every Friday, electronics gives you the latest engineering developments and technically interpreted market trends. So don't wait till everyone on the routing slip has read it. Subscribe now and read electronics first. Mail. the reader service card (postpaid) to electronics, the magazine that helps you to know and to grow! Rates: three years for $12, one year for $6; Canadian, one year for $10; foreign, one year for $20. Annual electronics BUYERS' GUIDE (single issue price $3.00) included with every subscription. March 9, 1962

IMM.·
THOMAS FLEXIBLE COUPLINGS
are indispensable for reliable power and motion transmission.
Designed especially to meet critical operating requirements, Thomas Flexible Couplings offer many important advantages plus long life, reliability and a wide range of styles and sizes to meet the particular requirements of your application. Special materials may be specified where high temperatures, corrosive atmospheres or other unusual conditions exist. For detailed information write for Engineering Catalog 60.
THOMAS FLEXIBLE COUPLING CO.
A Sub,idiory of Koppers Company, Inc.
WARREN, PENNSYLVANIA, U.S.A.
CIRCLE 203 ON READER SERVICE CARD 203

LOOKING FOR THE
InFAI
AUTOMATIC

Thomas & Skinner, Inc

2927

Thompson Ramo Wooldridge Inc. .1435-1633

Time & Frequency Tinnerman Products, Inc

2' 4205-4209

Tokyo Shlbaura Electric Co., Ltd

3107

The Torrington Co The Torrington Mfg. Co

4118 2824

Trak Electronics Co., Inc Transistor Applications, Inc

3,402-3804 M-18

Transistor Devices, Inc

2005

Transistor Specialties, Inc

3242

Transitron Electronic Corp

1720-1724

Trove° Associates, Inc

1230-1232

Tri Metal Works, Inc. Trio Laboratories, Inc.

4047 3123

The Triplett Electrical Instrument Co. .2420

Tm -Connector Corp.

1115

Tru-Ohm Products

2305

Trygon Electronics Inc

2001

Tung-Sol Electric, Inc The Ucinite Co.

2627-2613 2537-2540

George Uianet Co

°119

TERMINAL SETTER?
STOP. You've found it. Name is Electroset. Sets up to 4200 terminals per hour. Very reliable. Performance tested and proven by leading electronics firms.

U

Ultrasonic Industries, Inc.

4534

Ungar Electric Tools

4135

Unholtz-Dickie Corp.

3931

Uniform Tubes, Inc Union Carbide Corp

4039 2401-2405

United Aircraft Corp

ITALY ROOM

United Mineral & Chemical Corp

1331

United Shoe Machinery Corp

4241

U.S. Components, Inc

2805

U.S. Dielectric Inc United States Dynamics Corp U.S. Stoneware Co. U. S. Transistor Corp United Transformer Corp

M-11 M-15 0237-2239 1929 2413-2414

Unitek Corp.

4527

Universal Electronics Co

1121

Universal Instruments Corp

& Room41011190

Universal Mfg. Co., Inc

4017-4019

Utica Drop Forge & Tool

4009

new transistorized empire 900
GAUSSMETER

V

Vacuum-Electronics Corp.

Valpey Crystal Corp

D. Van Nostrand Co., Inc

Varian Vani-L

CAsO.s,ocIinactes

Varo, Inc.

Veetor Electronic Co., Inc

Vender-Root Inc.

Vernaline Products Co

Victor Comptometer Corp

The Victoreen Instrument

V it ramon, Inc Vitro Electronics

Vogue Instrument Corp

tiati7-2309 1433 4501
2708-2720 '209
1735-1737 1513 3510 2116 3925
Co.....2301-2303 2400-2408 1821-3823 1229

LONG RUNS :Model FST -1 -- raceway-fed, for
split-lug, feedthrough, and other terminals. Up to 4200 per hour. All electric. (Model FST Automatic Terminal Setter, not shown, atube-fed model, achieves even faster production rates.)
SHORT RUNS: Electropunch -- sets
hand-ted terminals twice as fast as conventional methods, solves terminal setting problems for as little as $163. All electric. Footswitch operation.

What's your problem? Black &Webster can help.
Send sample terminal
and requirements.
Write todayfor 14-page catalog describing our complete line ofproduction tools.

cOED

BLIICK E WEBSTER. inc.

Dept. E, 570 Pleasant St., Watertown 72, Mass.

Wabash Magnetics, Inc Wales STRIPPIT Inc The Walkirt Co P. Wall Mfg. Co. Walison Associates, Inc

2742 41114-4015
13113 -14830101165

Waltham Precision Instrument Co.,

Inc. Wang Laboratories, Inc

4402-4404 '1221

Ward-Leonard Electric Co

'231

The Watchmakers of Switzerland

3022

Waterman Products Co.. Inc

3110-3111

Waters Mfg.. Inc. Waveforms, Inc. Wayne-George Corp. Wayne Kerr Corp Weckesser Co.. Inc. The Welch Scientific Co Weller Electric Corp. Western Gold & Platinum Co. Western Semiconductors. Inc

1213 3220 1237 3114-3836 4003 4214 41123 4109
-20

Union Switch & Signal Div Westing-

house Air Brake Co.

2921-2923

Westinghouse Electric Corp

1402-1007

Westline Products

4400

West more Inc.

1949

John Wiley & Sons. Inc

4410

A. F. Wilkens Co

I-31

Wiltron Co.

3844

Winchester Electronics. Inc

0121-2123

Wind Turbine Co

1712-1714

Wood Electric Corp

M-19

Wright Metalcoaters, Inc. Wyren Projects. Inc.

4021 4531

Y

Yardney Electric Corp

'211-2213

Yokogawa Electric Works. Inc

3841

York Metal Products. Inc

4239

Kenneth A. Young Associates. Ine

2136

The Zell Products Corp The Zippertubing Co.

1818 4429

204

CIRCLE 204 ON READER SERVICE CARD

READS AS LOW AS .05 GAUSS
This ideal laboratory Gaussmeter provides immediate direct readings of flux densities, stray fields, and variations of field strength.
MOST SENSITIVE Full scope of 11 position range selector provides sensitivity as low as .05 gauss.
MOST ACCURATE Repeatability of readings 0.5%. Accuracy from 0.3 gauss to 30,000 gauss full scale 2%.
MOST STABLE No probe ageing--temperature stable indium arsenide probe. Special circuit design prevents probe overload.
WIDEST RANGE Upper range extension for readings to 100,000 gauss.
MEASURES AC OR DC FIELDS Operates from AC supply or from its own self-contained batteries for field use.
Empire 900 Complete with Probe $495.
TRANSISTORIZED GAUSSMETER MODEL 874
For direct reading of DC flux fields from 5 to 30,000 gauss by the use of a temperature stable indium arsenide probe. Light in weight, completely portable, battery operated. Empire 874 Complete with Probe $195.
¡ empire ts' T;f7rite to 'C1ENTIFIC CORP. GARDEN CITY, Re.
CIRCLE 263 ON READER SERVICE CARD
electronics

1962 BUYERS' GUIDE TAKES THE FIRST BIG STEP TO INCORPORATE SIC* NUMBERS IN PRODUCT LISTINGS

.neeeleeivc.e issue

'SIC (Standard Industrial Classification) codes are used by the U. S. Government, Bureau of the Census at the seven digit level to report statistics on individual products by industry.
Users of the BUYERS' GUIDE have come to expect pioneer service during its more than 20 years of existence. Editorial initiative keeps the BUYERS' GUIDE up to date on the products, materials and services of the entire industry; who makes what and where to buy it.
For the first time anywhere the 1962-63 electronics BUYERS' GUIDE and Reference Issue will include SIC numbers for those products which are clearly defined by the SIC. Statistics for marketing based on census figures are available only on products that can be precisely coded by SIC.

To date, neither private industry nor the Government has been able to define the 2,500 products, materials, services that comprise the electronics industry in a satisfactory 7-digit, SIC numbering system.
These first steps by the editors of the '62 BUYERS' GUIDE, taken with the assistance of the Bureau of the Census, Electronics Division of Business and Defense Services Administration, encourages the government, the industry and electronics to work together eventually to describe all the products of the industry.
This is only one of the many features that make electronics ,BUYERS' GUIDE your "best buy" for selling to the electronics industry. Reserve your advertising space now.

electronics
BUYERS' GUIDE and Reference Issue

The Basic Buying Guide in Electronics Since 1941
A McGraw-Hill Publication · 330 West 42nd Street · New York 36, N.Y.

Pnrch 9, 1962

20E.

EMPLOYMENT

OPPORTUNITIES
electronics

WEEKLY QUALIFICATION FORM FOR POSITIONS AVAILABLE

ATTENTION: ENGINEERS, SCIENTISTS, PHYSICISTS
This Qualification Form is designed to help you advance in the electronics industry. It is unique and compact. Designed with the assistance of professional personnel management, it isolates specific experience in electronics and deals only in essential background information.
The advertisers listed here are seeking professional experience. Fill in the Qualification Form below.
STRICTLY CONFIDENTIAL Your Qualification form will be handled as "Strictly Confidential" by ELECTRONICS. Our processing system is such that your form will be forwarded within 24 hours to the proper executives in the companies you select. You will be contacted at your home by the interested companies.
WHAT TO DO
1. Review the positions in the advertisements. 2. Select those for which you qualify. 3 Notice the key numbers. 4. Circle the corresponding key number below the Qualification Form. 5. Fill out the form completely. Please print clearly. 6. Mail to: D. Hawksby, Classified Advertising Div., ELECTRONICS,
Box 12, New York 36, N. Y. (No charge, of course).
MaimMalummiIiimummiu mmaymalisimm

COMPANY

SEE PAGE

A C SPARK PLUG

122

Electronics Div. of General Motors Corp.

Milwaukee, Wisconsin

ATOMIC PERSONNEL INC.

208

Philadelphia, Pennsylvania

BECKMAN INSTRUMENTS INC.

212

Fullerton, California

BOEING COMPANY

19

Seattle, Washington

BRENTON EMPLOYMENT AGENCY

208

Newark, i·lew Jersey BUREAU OF SHIPS

114

U. S. Navy Department

Washington, D. C. COWIN ASSOCIATES
Garden City, New York EITEL-McCULLOUGH INC.

207 116

San Carlos, California ELECTRO -MECHANICAL RESEARCH INC.

212

Sarasota, Florida ERIE ELECTRONICS DIV,

213

Erie Resistor Corp.

Erie, Pennsylvania ESQUIRE PERSONNEL SERVICE INC.

208

Chicago, Illinois FAIRCHILD STRATOS

198, 199

Aircraft Missiles Div. Hagerstown, Mar/land GENERAL COMMUNICATION CO.

207

Boston, Massachusetts GENERAL DYNAMICS ELECTRONICS
A Div. of General Dynamics Corp.

210

Rochester, New York

HOLLNBERGER-BURCHELL ASSOCIATES

208

West Islip, New York KOLLSMAN INSTRUMENT CORP.
Sub. of Standard Kollsman Industries Inc.

217

Elmhurst, New York

CONTINUED ON PAGE 210

III MI Ma IM

III

all IN

Icul here)

electronics WEEKLY QUALIFICATION FORM FOR POSITIONS AVAILABLE

KEY 1
2 3 4 5 6 7 8 9 10 11 12 13 14
15 16
(cut here)

Personal Background

Education

NAME HOME ADDRESS

PROFESSIONAL DEGREE(S) MAJOR(S)

CITY HOME TELEPHONE

ZONE

STATE

UNIVERSITY DATE(S)

FIELDS OF EXPERIENCE (Please Check)

3-9-62

CATEGORY OF SPECIALIZATION Please indicate number of months

ri Aerospace
ri Antennas n ASW n Circuits n Communications n Components

E Fire Control
ri Human Factors ri Infrared n Instrumentation
E Medicine
D Microwave

n Radar
Ell Radio--TV
n Simulators
ri Solid State ri Telemetry
ri Transformers

experience on proper lines.

Technical Experience
(Months)

Supervisory Experience (Months)

RESEARCH (pure, fundamental, basic)

RESEARCH (Applied)

SYSTEMS (New Concepts)

DEVELOPMENT (Model)

DESIGN

ri Computers
D ECM
n Electron Tubes D Engineering Writing

LI Navigation
Ei Operations Research El Optics

El Other

El Packaging

(Product)
MANUFACTURING (Product)
FIELD (Service)
SALES (Proposals & Products)

CIRCLE KEY NUMBERS OF ABOVE COMPANIES' POSITIONS THAT INTEREST YOU 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25
26 27 28 29 30 31 32 33 34 35 36 37 38 39

206

electronics

PROJECT MANAGER EMPLOYMENT OPPORTUNITY luzzoinuilauà Ni ·widmitimmiancunimummummilmommultiumnumin

Magnetic Tape Recorder/Reproducer

To design and develop electronic signal processing circuitry for instrumentation magnetic tape recorders in areas of amplification, modulation (FM, PDM, PCM, AM, etc.) and multiplexing. Must also work on power supplies and servo amplifiers. All circuitry is
solid state and is below one megacycle. This man must be able to
evalulate preliminary specifications, do actual design work himself, direct other engineers and technicians to build and test circuitry, evaluate results and supervise the process of bringing bread-boarded circuitry to the stage of preproduction prototypes. Salary open.

SANGAMO

ELECTRIC

EDUCATION AND
EXPERIENCE: Requires B.S. degree in Engineering plus three to five years of applicable experience in transistor circuitry design and development. NOTE: If you are interested in this employment opportunity, please send your resume to W. J. Mullaney, Training Director, Sangamo Electric Company, Springfield, Illinois. A note describ-
ing your employment objectives is always appreciated and a recent snapshot of yourself, if available, most helpful.
COMPANY/ SPRiIiNGFIELD.

GENERAL COMMUNICATION
COMPANY
EXPANDING PROGRAM
MICROWAVE DESIGN ENGINEER
BSEE or equivalent experience in the design and development of microwave devices. Must have experience in precision microwave measurements on low loss components. Background in ferrite switching devices desirable.

SCIENTISTS

ENGINEERS

MANAGERS

Cowin Associates --management search specialists --represent avariety of professionally
significant electronics organizations with outstanding records of leadership and accomplishment in the industry.

These companies now offer unusually attractive opportunities for accelerated professional advancement. Openings are in the
areas of Systems Engineering, Project Man-
agement and creative Design and Development. Specific fields include:

Digital techniques

1.0

Radar

à

Communications

Solid State

ASIV

Computers

Microwave

·
I

ECN I

à

Antennas

Marketing

Sales

If you are experience in this field, this position should interest you. General Communication Company is a medium-sized, growing, technically strong company-- one which will provide you with the oppottunity to use your fullest capacity to acquire advancement, personal recognition and financial progress in a friendly and informal atmosphere.
This position will command an attractive salary, based on the experience and potential of the applicant. Many fringe benefits including opportunity for further education through company-sponsored program.
For full information you are invited to contact WINSLOW AMES, PERSONNEL MANAGER
GENERAL COMMUNICATION COMPANY
679 Beacon Street, Boston 15, Massachusetts
"An equal opportunity employer"
March 9, 1962

For experienced placement service tailored to your needs, please forward your resume and abrief description of the type of position you desire to Mr. David Cowin. (Naturally, this service will involve no cost to you. )

TO ARRANGE AN INTERVIEW DUR-

à

ING THE I. R. E. SHOW at the Convention

Headquarters Hotel, please phone Mr. Cowin at PLaza 5-5758. (9 A.M.-5 P.M.)

à

FSSOCJtSi à

600 OLD COUNTRY ROAD ·GARDEN CITY, N. Y.

à

Management Search Specialists

à

kali!muamnmnominumunn

là

à numnimmuummunnumummi

207

EMPLOYMENT OPPORTUNITIES

'NATIONAL COVERAGE

The Advertisements in this section include all employment opportunities--execu. five, management, technical, selling, office, skilled, manual, etc. Look in the

forward section of the magazine for Additional Employment Opportunities

advertising.

Positions Vacant Positions Wanted Part Time Work

Civil Service Opportunities
Selling Opportunities Wanted Selling Opportunities Offered

Employment Agencies Employment Services Labor Bureaus

DISPLAYED

----RATES-- -

UNDISPLAYED

The advert king rate is $-10.17 per inch for all advertising appraising tin re her Man a main aiii basis. 'out met rates quoted in resilient.

$2.70 Per line. minimum :1 lines. To figure affiance Payment could 5 merage words as a line.
flex Numbers--enunts a.s 1 line.

\n advertising ineh is measured ,S' verticallY on a column - 3 columns - 30 inches to a page.
subject to Agency Commission.

Discount of 10% it full payment in made in advance for .1 consecutive insertions.
Not minuet to Agency rommissiOn.

Send NEW ADS to CLASSIFIED ADV. DIV. of ELECTRONICS. P.O. Box 12, N. Y. 36. N. Y.

ENGINEERS

SUPERVISORY
MGRS

$14-31,000

FEE PAID BY CO.

Our Unique Service Managed by Engrs has set up a special service to develop Hi level contacts & search out unusual eng'g management positions. We are presently looking for Men with strong leadership ability in the following areas:
--ELECTRONIC SYSTEMS --COMPUTERS 8 CONTROLS
--MEDICAL ELECTRONICS --ELECTRO-MECH'L COMPONENTS
--SOLID STATE
Our client's mgmt and our tech .' staff will be available for confidential evening dis cussions. Write, call Mr. Albert collect 201 MA 2-0915.

METROPOLITAN & NATIONAL SEARCH

BRENTEN

EMPLOYMENT AGENCY

786 Broad

Newark, N. J.

$25,000 Salaries to Plus attractive fringe benefits
Client pays our fees

ELECTRONICS ENGINEERS

Our client, a well known electronics firm,
has growth opportunities for experienced
engineers.
.Digital Computers .Environmental Test .Human Factors .RF Transmitters & Receivers .Communications

...Antennas & Microwave ...Optical--Infra-Red ...Radar Systems ...Servo Systems ...Ground Support Eqpt.
Sales & Marketing

NEW YORK CITY INTERVIEWS

PLAZA 5-5842

MDaariclyh &26Etvhernuin2g8

If interview is inconvenient, send resume in strict confidence to

HOLLNBERGER--BURCHELL ASSOCIATES
Professional Staffing Consultants
181 Sunrise Highway, West Islip, L. I., N. Y.

(-EXPENSEPAID TRIP ...To 11117VOW
NEW YORK CITY, MAR. 26-29

SCOPE, Professional Placement Center, New England's most progressive agency specializing in the electronics industry, will prearrange client company all-expense sponsored trip and will schedule a number of selected interviews from its National roster of client companies to save

you time.

Exceptional job opportunities are available in Research-Design-Development and Sales-Marketing-Application. Better your professional stature now ... air mail resume in complete confidence --no obligation on your part. BS, MS and/or

PhD degree required.

For full details write or call collect today:

TWinbrook 9-8250.

Alan Gina sid Homier

Technical/Scientific Sales/Marketing

GC:71=P.E

Professional Placement Center

\..... 1277 MAIN ST.

WALTHAM, MASS..,..)

DIRECTOR

DEVICE DEVELOPMENT LABORATORY
This is a new position and will involve the establishment of a group concerned with device development in the electronic component area. Integrated circuit development, molecular electronic circuitry, and new product development will be included in the scope of this laboratory. Applicants should have experience in directing technical personnel in development work. Advanced degree in physics or electrical engineering with circuit and solid state physics background

required.
7xperience and qualification summaries should be sent to: Dr. D. G. Wilson, Vice President

Research and Engineering.
P. R.
3029 E. Washington Street

MALLORY 8. CO.,
Equal Opportunity Employer

INC.
Indianapolis, Indiana

MANUFACTURERS' REPRESENTATIVES
IN THE ELECTRONIC INDUSTRY
Years of Sales Success in Electronics Products
NEW YORK · NEW JERSEY PENNSYLVANIA
KENNETH E. HUGHES Co., Inc. 4808 Bergenline Ave., Union City, N. J.

E. E.'s
For professional, individualized fee-paid service write for confidential application.
A national employment agency for the Nuclear & Scientific Fields.
ATOMIC PERSONNEL, INC.
Suite 1207L, 1518 Walnut St., Phila. 2, Pa.

MANAGER SYSTEMS ENGINEERING SALARY TO 818.000
Require mature, experienced, technically trained

cifndiivnidduusatlriawlithenaginbereoraidn.g

fairly and

detailed knowledge mfg. practices, to.

tseetarhcehr.

with an Capable

understanding of operations of coordinating functions of

rehis

group with others of equivalent rank responsible

for equip. design & development, project manage-

ment & sales. COMPANY CLIENT ASSUMES

ALL EXPENSES. ESQUIRE PERSONNEL. 202 S. State. Chicago 4. Ill.

ELECTRONIC DEVELOPMENT ENGINEERS

Immediate openings for EEs experienced in orig-

inal semiconducl or circuit and

polirai design.

Positions require problem definition, system de-
sign and prototype evaluation. Salary open. Send res', to Mr. j. F. MeMal·
UNION SWITCII ar SIGNAL

W..\itt:0

l'itt·intrgli 18, l'a.

COMMUNICATIONS APPLICATION ENGINEER Analysis of advanced electronic communication systems including radio. carrier, telephone, microwave:
Mpeursitenhcaevewidtehsicgonmmameirdcimaalrkeatnidngmielsi-iary
ER degree, 5 yrs. exp. min. Send Resume to:

f

/ Microwave Services International Inc.

Conault ing Enuinerrs

Route 46

Denville. N.

SELLING OPPORTUNITY WANTED
Sales Engineers--New Group Engineers to represent equipment manufacturer. Territory --Texas, Kansas. Oklahoma. Missouri--retainer or commission. RA-8391, Electronics. Classified Any. Div., 6-15 N. Michigan Ave., Chic. 11, Ill.

Your Inquiries to Advertisers Will Have Special Value ...
--for you--the advertiser--and the publisher, if you mention this publication. Advertisers value highly this evidence of the publication you read. Satisfied advertisers enable the publishers to secure more advertisers and--more advertisers mean more information and more products or better service --more value--to YOU.

208

electronics

FROM DARING AND
DOING New space communications concepts

Consider acareer at PHILCO Western Development Laboratories, on the San Francisco Peninsula. New concepts of communications with lunar reaches and beyond can be your projects. Here you devise and "do", unencumbered by dogma or dialectics. Constantly expanding programs and new research assignments assure you personal recognition and advancement.
PHILCO Western Development Laboratories pioneers in all phases of space communicafions, with ir,portant and growing projects that
AN EQUAL OPPORTUNITY EMPLOYER

include satellite instrumentation, range design and operation, missile tracking, data handling and control equipment.
Your family will enjoy Northern California. You ski, swim and sail in season, or just bask, with both the opportunity and wherewithal to enjoy your favorite diversions. PHILCO Western Development Laboratories is indeed a fortunate conjuncture of challenging work and affluent living. For information on opportunities in electronic engineering, for men with degrees from B.S. to Ph.D., please write Mr. W. E. Daly, Dept. E-5.

PH ILCC)
A SUBSIDIARY OF
5Sr---jcigeyrUmAceny,

WESTERN DEVELOPMENT LABORATORIES
3875 Fabian Way, Palo Alto, California

March 9, 1962

209

ASSIGNMENTS IMMEDIATELY AVAILABLE AT

GENERAL DYNAMICS ELECTRONICS

IN
ANTISUBMARINE WARFARE
SECTION HEAD--BS or MS in EE with minimum 5 years experience in communications, good working knowledge of ASW and thorough background in RF and audio circuit design, ASW communications problems and signal processing.
PRINCIPAL ENGINEER--BS or MS in EE with minimum 10 years experience in ASW and Sonar including broad knowledge of underwater acoustics and its relationship to sonar.
COMMUNICATIONS
CHIEF ENGINEER--MS in EE or equivalent with 10 to 15 years experience in data transceiver equipment design, radio transmitter and receiver design, transistor circuit design. Must be capable of assuming technical and administrative responsibility for a laboratory actively engaged in both surface and airborne application of radio and digital communication equipments.
DESIGNERS--With experience in radio receivers, frequency synthesizers, power amplifiers or radio communication systems.

ELECTROACOUSTICS
PRINCIPAL ENGINEER--BS or MS in EE with experience in design of high powered circuitry involving use of transistors.

HYDROACOUSTICS
SENIOR ENGINEER--BS or MS in ME or Physics with 5 to 10 years experience in industrial sonics, thorough training in the physics of cleaning, processing and/or impact drilling, background in acoustics, general physics and chemistry.

QUALITY CONTROL
RELIABILITY ENGINEERS--BS in EE with minimum 1 year experience including reliability prediction, environmPntal analysis, design review, test planning, failure analysis etc.

FIELD SERVICE

ENGINEERS--Degree preferred but not required. For work on installation and maintenance of communications equipment at various U.S.

locations.

· For further information on how YOU can contribute to one of the various programs now in progress, send a complete resume to

M. J. Downey, General Dynamics/Electronics , 1451 N. Goodman St.,

Rochester 3, New York.

G 11 11 11)

GENERAL DYNAMICS I
AN "Due., OFFIDF -ryNITY

ROCg

210

electronics

WEEKLY QUALIFICATIONS FORM FOR POSITIONS AVAILABLE

(Continued from Page 206)

COMPANY

SEE PAGE

LOCKHEED CALIFORNIA CO.

136

A Div. of Lockheed Aircraft Corp

Burbank, California

KEY 17

LOCKHEED-GEORGIA CO.

120

18

Div. of Lockheed Aircraft Corp.

Atlanta, Georgia

LOCKHEED MISSILES & SPACE CO.

112

19

A Div. of Lockheed Aircraft Corp.

Sunnyvale, California

MALLORY ELECTRONICS COMPANY

208

20

Div. of P. R. Mallory & Co., Inc.

Indianapolis, Indiana

McDONNELL AIRCRAFT St. Louis, Missouri

211

21

MICROWAVE SERVICES INTERNA-

TIONAL, INC.

208

22

Denville, New Jersey

MITRE CORPORATION Bedford, Massachusetts

181

23

MOTOROLA, INC. Military Electronics Div. Western Center Scottsdale, Arizona

212

24

NATIONAL CASH REGISTER CO.

215

25

Dayton, Ohio

PAN AMERICAN WORLD AIRWAYS INC 202

26

Guided Missiles Range Div.

Patrick AFB, Florida

PHILCO WESTERN DEVELOPMENT

LABS.

209

27

Palto Alto, California

REEVES INSTRUMENT CORP. Garden City, New York

214

28

REMINGTON RAND UNIVAC St. Paul, Minnesota
SANGAMO ELECTRIC COMPANY Springfield, Illinois

53'

29

207

30

SCOPE PROFESSIONAL PLACEMENT

CENTER

208

31

Waltham, Massachusetts

SIKORSKY AIRCRAFT

32

Div. of United Aircraft Corp.

Stratford, Connecticut

SPACE TECHNOLOGY LABS., INC.

15

33

A Sub. of Thompson -Ramo Wooldridge

Los Angeles, California

SPEIDEL CORPORATION Industrial Division Warwick, Rhode Island

214

34

SPERRY GYROSCOPE COMPANY

212

35

Div. of Sperry Rand Corp.

Great Neck, L. I., New York

SPERRY MICROWAVE iFLECTRONICS

CO.

217

36

Div. of Sperry Rand Corp.

Clearwater, Florida

STANDFORD LINEAR ACCELERATOR

CENTER

102

37

Stanford University Stanford, California

SYLVANIA MOUNTAIN VIEW OPERATIONS

213

38

Mountain View, California

UNION SWITCH & SIGNAL
Div. of WABCO Pittsburgh, Pennsylvania These advertisements appeared issue.

208 ir, the

39 3/2 62

electronics

MCDONNELL AIRCRAFT conecontATION

PERT · ST

MUNICIPAL

· ··

.

PERSONAL: Name Address-

Physical Appearance

MILITARY SERVICE:

ACHIEVEMENTS: FHA Phantom-

FF2-I1101BaVnoshoede e-W:5e_e4id.lgz 4evzji-e rnt ee dii _Ac Lee (/2-a-mreer_zaeeee,dOgce ia eed eee leteee-, '-_e-._

F3H Demon

Quail GAM-72

CURRENT ASSIGNMENTS: F4H Phantom

,,zieeeteikeideke5Zade--

RF-110

THE FUTURE IS AT
MCDONNELL
WHERE ENGINEERING CONCEPTS ARE MOVING...
...Men into Space ...Aircraft to New Records ...Design Beyond the
State of the Art
LE-alre

F-110 A__.& S. ·

Asset

Mercury

Gemir s

"enallie 5e

44a'

7 FUTURE OBJECTIVE: ge.Ériele

CZ·eadifier--
_a4efriene_edeeee

ZWe FrEsumies

Please complete this form and forward to: Mr. D. F. Waters, Professional Placement, Dept. 62, McDonnell
Aircraft, St. Louis 66, Missouri. This is not an application for employment. Your qualifications will be
reviewed by our placement staff and you will be advised of positions at McDonnell for which you qualify. You may then make application if you wish. All replies confidential.

Name City & State Present Position

Home Address Phone

Age

Primary Experience Area Secondary Experience_ Additional Comments

Number of Years Number of Years_ _

Education: AE _ME_ Math

Physics__ Chemistry_ EE

Astronomy

Other

Degree: BS

Date

MS

Date

PHD

Date

I would like to receive application form

I would like to receive literature about professional opportunities at McDonnell

My primary interest is:

D Airborne Communications

D Antenna & Microwave Techniques

D Automatic Test Equipment

ri

Computer Development Digital Technique & Logic

Design

D Military Airborne & Solid State Electronics
D [-3RTehsienarFcihlm Techniques
Weapons Systems Analysis

ivicmconinnEil. An equal opportunity employer.
F4H and F-110A Fighter and Attack Aircraft · RF-110 Photo Reconnaissance Aircraft · Mercury, Qemini, Asset and Aeroballistic Spacecraft · Talos and Typhon Missile Airframes and Engines ·
'Quail Decoy Missiles · Rotorcraft · Electronic Systems · Automation

MCDONNELL AIRCRAFT · ST. LOUIS

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MOIMOMUMMUMMOMPO:Wlem OMB§

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For more than fifty years engineers have acknowledged that Sperry is a good place to work. The reason? Simply stated it's because Sperry possesses atrue engineers' environment. Here you will find the broad range of programs that insures stability and because of their advanced nature you can forget "off-the-
shelf" concepts and start using your creative imagination. At Sperry you will be working with the top men in your specialty and
from these men you will gain increased professional competence. Finally Sperry's management is technical management that knows an engineer's problems and recognizes his contributions.

Gain the many advantages of an engineers' environment by join-

ing the Technical Staff at Sperry. Openings are currently ava

,I·

·

·

·· I 9.,more of tese are

· GYROS AND INERTIAL COMPONENTS · DIGITAL COMPUTERS · CIRCUITRY · PACKAGING · COMMUNICATIONS · SONAR · RADARS · ASW · STAR TRACKERS · CELESTIAL AND INERTIAL NAVIGATION SYSTEMS · PRECISION GEAR TRAINS · STRESS ANALYSIS · RANGE INSTRUMENTATION
· MISSILE INSTRUMENTATION · FIELD ENGINEERING

s r

yel»eSefes0PER Inquiries may be sent in complete confidence to: Mr. J. W. Dwyer, Employment Manager

l

o

anderdIfte

Great Neck, Long Island, N.Y.
An Equal Opportunity Employer

Interviews During IRE Convention at Waldorf-Astoria Hotel, PL 2-5390, Pl. 2-5391
212

BECKMAN'S
Business Today-- Instruments Systems
and Components for
Tomorrow
Continued expansion has created exceptional potential for professional advancement at our facilities located in Los Angeles, San Francisco, and Chicago. Areas in which design and development opportunities exist include:
· ELECTROMECHANICAL COMPONENTS
· DIGITAL DATA ACQUISITION AND DATA PROCESSING SYSTEMS
· SOLID STATE CIRCUITRY
· PROCESS CONTROL INSTRUMENTATION
· CHEMICAL ANALYTICAL INSTRUMENTATION
If you are attending the IRE show in New York, and would like to learn more about these positions, contact R. M. McEvers or L. R. Stapel at Circle 50160; otherwise, send adetailed resume directly to Mr. Stapel at:

Beckman

INSTRUMENTS, INC. Fullerton, California

An equal opportunity employer.

electronics

Opportunities For Graduate
ELECTRICAL ENGINEERS
with Experience in SEMI CONDUCTOR DEVICES or ELECTRONIC COMPONENTS at
ERIE ELECTRONICS
Division of Erie Resistor Corp.
645 West 12th St., Erie, Pa.
or
ELECTRON RESEARCH INC.
530 West 12th St., Erie, Pa. Contact:
ROBERT W. SPARKS
GL 6-8592
CHALLENGING CAREERS
IN PRODUCT ENGINEERING
MANAGEMENT PRODUCTION RESEARCH DESIGN SALES
Nationwide Opportunities Confidential Handling
Full Information Write
Personnel Engineering
Consultants--Agency License
3300 Peterson, Chicago, III.
1102 Broadway, Rockford, III.
March 9, 1962

1111111111111111111111111111111111111111111.111111111 1111111111111111111111111111111111111111111.1111111111t1R1111111111111111.111 11.111.11111111111111111 1111t111 11.111.111111U1111M11111111111111111 111111:111,11iltIllittlin11[1111111Et1111111111111111M1111111IIIIItttilill1111111111111111.11n111111eUtli111111111111111111111111111111111 111I

Vffill1.1.1111111111111111,1llttattill111111111111111111111111410111MIIKIIIInge
Demanding Assignments for Engineers at

MIM

SYLVANIA a

·Ml· IMM MI»

IMM·1

Reconnaissance Systems Laboratory on the
SAN FRANCISCO PENINSULA

SYSTEMS ENGINEERS. System analysis and synthesis in new programs at Sylvania's RSL offer abroad spectrum of challenging problems involved in reconnaissance systems including: feasibility studies, conception and definition of optimized system solutions to basic operational requirements; application and development of advanced techniques; specification of constituent subsystems; human factors engineering; operations research; system performance analyses. A minimum of 5years experience is required in progressive assignments in system analysis and synthesis and integration of subsystems. Should have background in receiving systems in the HF through millimeter bands. Advanced degree preferred.
DESIGN ENGINEERS. The design groups in RSL have openings for engineers at all levels with design and development background in one or more of these areas: receivers, RF components, DF equipment, antennas, magnetic tape recorders, teletype equipment, displays, data transmission, data converters and computers. Opportunities for both technical specialists and supervisors.
SENIOR RELIABILITY ANALYSIS ENGINEERS Positions requiring systems analysis, test design, availability and effectiveness studies, proposal writing, major reliability reports. Must have BS in EE or Physics with knowledge of fundamentals of calculus or probability; a minimum of 4 years of senior responsibility in reliability engineering involving implementation of reliability programs.
THE REWARDS. Work in a compact and growing laboratory which offers the creative engineer the opportunity to grow with an expanding organization. Take advantage of the individual recognition and advancement opportunities of asmall organization (approximately 500 employees) with the security, benefits and diversified opportunities of a large corporation. Enjoy the ideal Northern California climate in relaxed suburban communities with excellent schools and recreational facilities for you and your family. Live within 40 minutes of cosmopolitan San Francisco. Realize the advantages of being close to leading universities (Stanford is just five miles from the Laboratory).
An equal opportunity employer.
Complete information may be obtained by writing, in confidence, to
Roger Harlan at:
SYLVANIA RECONNAISSANCE SYSTEMS LABORATORY
P.O. Box 188, Mountain View. California

SYLN'ANIA ELECTRONIC SYSTEMS
Grnernment Systems Manalt·iiicnt
for GENERAL TELEPHONE SELECTRON/OS

G.141.11.

7703
*flimitiltilfininfullinimminummuniminmoutuniiimninure

213

SPACE RADAR PROGRAMS
AT
/1/51.9LIAIINT CORPORIlTION
* DISCOVERER *STONE AGE * POLARIS
*NIMBUS

Openings now exist for men capable of taking full responsibility from proposal thru hardware phases in a project organization. Your salary will be commensurate with your ability.

SENIOR RADAR SYSTEMS ENGINEERS
Men with 6 to 10 yrs. experience; have excellent knowledge of video and synchronizing circuit design; to be responsible for design of gating, sweep and countdown circuits as applied to tracking radar systems.
COMPUTER ENGINEERS
Men with 4yrs. experience in analog computer and servo design; must be familiar with transistorized circuits; familiarity with ancillary digital equipment desirable.
STANDARDS ENGINEERS
Men to prepare technical reports and specifications with control drawings; assist in parts selection; negotiate specifications; require 5 yrs. experience.

SENIOR RADAR ENGINEER Man with 6 to 10 yrs. experience in the design and development of high power modulators and transmitters.
COMMUNICATIONS ENGINEERS Men with 3 or more yrs. experience; require knowledge of teletype systems; experience with high speed printers, telephone transmission circuitry, information storage and readout circuitry.
RADAR PROJECT ENGINEERS Men with 3 or more yrs. experience in the design of transistorized pulse circuitry; require familiarity with transmission of digital data.
TECHNICAL WRITERS Experienced in the preparation of manuals to military specifications; electronic experience preferred; will work closely with Project Engineers.

SEND RESUME OR CALL COLLECT FOR APPOINTMENT WITH MR. JAMES J. LYNCH, PIONEER 6-8100, EXT. 279

214

A Subsidiary of Dynamics Corp. of America
Roosevelt Field, Garden City, New York
AN EQUAL OPPORTUNITY EMPLOYER

RESEARCH AND
DEVELOPMENT
OPPORTUNITY
for ELECTRONIC ENGINEERS
Broad new facilities expansion has opened a number of growth opportunities with this well established manufacturer of specialized instruments for the aerospace industry. Speidel's Industrial Division is looking for B.S., M.S., and PhD. degree men to assume intermediate, senior and project engineer responsibilities in development of
RECORDER REPRODUCERS
AND MAGNETO-
HYDRODYNAMIC GYROS
The men we are looking for must have strong theoretical background and practical experience in one or more of the following areas:
· Field Theory · Transistor Circuits · Magnetic Tape Recording · Electro -Mechanical Instruments · Circuit Analysis
Speidel's Industrial Division is initiating dynamic new programs in both aerospace and commercial fields. These programs demand creative talent and strong analytical ability coupled with the type of initiative that requires a minimum of supervision. Excellent salaries and growth opportunities and brand new, air-conditioned facilities spark the climate of success the men we seek are looking for. Pleasant suburban living is just five minutes away. The cost of living is low! The superb recreation facilities are as famous as the surrounding universities, cultural institutions and fastgrowing industry.
It will be to your advantage to call collect (8 a.m.-8 p.m.) (All inquiries confidential) Mr. Joseph Motherway, Chief Eng. R& D
CORPORATION
Industrial Division
Speidel Industrial Park Warwick, Rhode Island REgent 9-7000
(An equal opportunity employer)
electronics

NCR ...Research

MICRO-ENCAPSULATION

MAGNETICS

...Development

11411111iel

OPERATIONS

LOGIC & CIRCUITRY

MECHANICS

...New Products

DIGITAL SYSTEMS

THE NCR 450 CONTROL AND PROOF MACHINE

THE NCR 315 COMPUTER

NCR offers awide range of opportunities for experienced scientists and engineers interested in commercially oriented projects or advanced military electronic
development. Current work encompasses a broad field of activity including semi conductor research, low temperature physics. micro-electronics. photochromics. advanced electronic systems development. high frequency communications, and operations research studies related to

complex business and financial systems. Previous efforts of NCR research and development have resulted in new products such as: NCR (no carbon required) Paper, the highly successful Electronic Data Processing Systems, and other items for the electronic and business machine industries. Rapid growth has caused openings at all levels of experience and education and provide opportunity for technical or administrative growth.

Send letter of application and résumé to: T. F. Wade. Technical Placement, G-11,, The National Cash Register Company, Dayton 9, Ohio.
An equal opportunity employer.

THE NATIONAL CASH REGISTER COMPANY, DAYTON 9, OHIO
ONE OF THE WORLD'S MOST SUCCESSFUL CORPORATIONS 78 YEARS OF HELPING BUSINESS SAVE MONEY
March 9, 1962

ELECTRONIC DATA PROCESSING ADDING MACHINES · CASH REGISTERS
ACCOUNTING MACHINES
NCR PAPER (No CARBON REQUIRED)
215

Career opportunities at
Motorola in Phoenix
are awaiting you now, along with a wealth of
warm winter bdn

The sun spends more time in Phoenix than in any other major city in the United States. That's why golfing, gardening, picnics, boating and fishing can be enjoyed around the calendar. World-famed scenery and the freedom of wide open spaces are yours to enjoy. You're 90 minutes from pine-forested mountains; just four hours to Mexico; six hours to incomparable deep-sea fishing.
These advantages add considerable meaning to opportunities for personal and professional growth at Motorola. Here, you'll be given the opportunity to express your ideas in an atmosphere that encourages initiative and independence. As amember of aproject team, you become akey figure at every level of creative engineering -- working alongside men with proven ability and broad experience. And in addition you'll get abonus in better living in the sunniest, healthiest climate in the United States.

POSITIONS IMMEDIATELY
AVAILABLE

Systems Test Equipment Design Communications and Navigation
·Systems Analysis and Preliminary Design
Missile and Space Guidance and Control Digital Circuitry Design Microwave and Radar Reliability and Components Solid State

Write Phil Nienstedt, Dept. 253
MOTOROLA
MILITARY ELECTRONICS DIVISION -- WESTERN CENTER P.O. Box 1417, Scottsdale, Arizona

Motorola also otters opportunities at Chicago. Illinois, and at Culver City and Riverside, California
An Equal Opportunity Employer

216

technical leader in telemetry and instrumentation
AFFORDS MAJOR AREAS FOR PERSONAL GROWTH
By maintaining a reputation for technical engineering excellence and a position of leadership in research and development, ElectraMechanical Research, Inc. (EMR) has become the largest company specializing in telemetry systems and products. Today, with the space age bringing new and vital significance to the field of electronics, EMR affords mature engineers an environment for maximum responsibility and personal growth.
ELECTRONICS SYSTEMS ENGINEER for development of high-performance TV Systems
ADVANCED SYSTEMS ENGINEER
SYSTEMS ENGINEER DIGITAL
Engineering managers, attending IRE, may be reached through CAREER CENTER, Hotel Astor or direct confidential inquiries to
ROLAND E. HOOD, JR. Personnel Manager Systems Div.
electromechanical
research, inc.
P. O. Box 3041-C Sarasota 2, Florida An Equal Opportunity Employer
electronics

N ELECTRONIC ENGINEERS

Kollsman's

SPERRY

Broadening
Aerospace Systems
Capabilities
Create Unusual Assignments
at Various Levels of Responsibility in Research, Development
and Engineering
STAFF ENGINEERS
For creative staff engineering in digital electronics, air data systems, pressure sensors and transducers, optical electronic systems, digital computers and sensors, solid state physics, logical design, systems analysis and synthesis, infrared and visual scanning techniques, information theory, systems development for navigation and guidance of aircraft, missiles and space vehicles, heat transfer analyses, and reliability.
DEVELOPMENT ENGINEERS
For project engineering assignments on automatic navigation, air data and flight control systems and devices. Also assignments in ground support equipment in the above areas, as well as in our new ordnance equipment group. Experience in electromechanical/optical systems desirable.

HAS OPENINGS IN FLORIDA
WEAPON System and SPECTRUM SURVEILLANCE Program
Challenging Career Opportunities are available for the experienced, capable engineer in Sperry Microwave Electronics Company's many state-of-art programs now in progress.
SENIOR SYSTEMS ENGINEERS
Experience includes system analysis synthesis and integration, with extensive background in circuit design augmented by hardware implementation. Will contribute to advanced techniques in military and commercial electronic systems.
CIRCUIT DESIGN ENGINEERS
E.E. or physics graduate, 3 to 8 years experience with tubes and transistors and their utilization in circuitry and the integration of circuits into sub-systems.
MICROWAVE ANTENNA ENGINEERS
Knowledge of Broadband, High Resolution and Millimeter Range.
ELECTRONIC SYSTEMS SYNTHESIS SPECIALIST
Experienced in Electronic systems synthesis and analysis and feasibility implementation as applied to special detection techniques.
MICROWAVE COMPONENT ENGINEERS
Design Filters, Couplers, Mixers, Loads, Attenuators and similar microwave networks.
MICROWAVE SOLID STATE DEVICE ENGINEERS
Research, development of Isolators, Circulators, Limiters and Parametric Amplifiers.
TECHNICAL WRITERS
BSEE. 5 years experience. To assist Engineers with preparation of technical reports and proposals, obtain data, organize material, expand and write draft.
INFORMATION THEORY SPECIALISTS and CORRELATION TECHNIQUES SPECIALISTS assignments available.
Qualified CANDIDATES will be invited to meet with members of our staff to learn the advantages of working and living in Clearwater, Florida.
Send resume or phone Mr. R. C. CARROLL, Employment Supervisor.

See us at the Waldorf during the IRE convention
or send complete resume to 11r. Donald Svenson.
lk Kollsman Instrument Corporation
80-08 45TH AVENUE, ELMHURST 73, QUEENS, N. Y ASubsidiary of Standard Kollsman Industries Inc.
An Equal Opportunity Employer

SPERRY
MICROWAVE ELECTRONICS CO. Division of Sperry Rand Corp. CLEARWATER, FLORIDA Phone 876-4161 (Tampa)
An Equal Opportunity Employer
EMPLOYMENT PROBLEM?
When you are in need of specialized men for specialized fobs. contact them through an employment ad in this publication.

March 9, 1962

217

SEARCHLIGHT SECTION

R&D SPECIALIZING

RESEARCH & DEVELOPMENT
EQUIPMENT

MICROWAVE ANTENNAS

3 CM ANTENNA ASSEMBLY: Le*, 17" pal ainlaid dish,

operating front 24 vdc motor.

Beast pattern: 5 deg. In both

It, Azimuth and elevation. Sec-
tor Scan: over 160 deg at

scans per minute. Elevation Scan. over 2 deg. Tilt. Over

24 deg.

$27.50

3 cm. Horn, 1x 1,4". with twist

and 180 deg. bend. With di-

electric window

$7.50

AT49/APR - Broadband Coni-

cal. 300-3300 MC, Type N Feed

$5.95

Discone Antenna. AS 125 APR. 1000-3200 inc. Stub

supported with type "N" Connector

$6.95

ASI4A/AP. 10 CM pick up dipole ass'. complete w/

length of coax and "N" connectors

$4.50

AS46A/APG-4 Yagi Antenna. 5 element array S8.95

30' Parabolic Reflector Spun Aluminum dish 10%"

Focus

$4.85

18" PARABOLIC DISHES, spun aluminum. Focus

approx. 8 inches

$3.95

APS-4. 3 cm. antenna. Complete. 14% dish. Cutler feed dipole directional coupler. all standard 1" x

1/ 2 " waveguide. Drive motor and gear mechanisms

for horizontal and vertical scan. complete... $27.50

PULSE NETWORKS

G.E. #6E3-5-20iiii-50p2T. 0KV "E" circuit. 3 see-

tions 5 microsecond. 2000 l'US 50 ohms imPetl-

once

$4.00

G.E. #3E (3-84-810) (8-2-24-405) 50 P4T: 3KV "E"

CKT Dual Unit; Unit 1, 3 sections. 0.84 Microsee.

810 PPS. 50 ohms imp: Unit 2, 8 sections, 2.24

microsec. 405 PPS. 50 ohms imp

$3.75

H.616 10 KV. 2.2 usec., 375 PPS. 50 ohms imp $8.50

H-615 IOKV, 0.85 user. 750 PPS. 50 ohms imp $8.50

H-605: 25KV, "F;" CKT. 1.5 usec. 400 PPS, 50 Ohms

Impedance. 5 sections

$47.50

7-5E3-1.200.67P, 7.5 KV "E" Circuit, 1 Microsec.

200 PPS, 67 ohms impedance 3 sections

$4,00

74E4-1640. 67P, 7.5 KV "E" Circuit, 4 sections 10

microsec. 60 PPS. 67 ohms impedance

$6.00

7.5E3.3.200-67P, 7.5 KV. "E" Circuit. 3 mlerosee

200 PPS. ohms, imp. 3 sections

$7.00

X BAND-1" x 1/2" WAVEGUIDE

90 degree elbows. "E" or "il" Plane 2"," Iallill> $5.50

ROTARY JOINT CAPS-6) Sperry PT #658275, 180

deg. rotation, choke-to-choke. Has "Built-in" Di-

Coupler. 20 DB., with "N" Takeoff

$12.50

PARABOLOID DISH. 18" diam. Spun Aluminum. 8"

Focus. For AN/APS-6

$3.95

3 CM. DIPOLE and Feed Assembly. (May be used

with above dish) II inches long

FLEXIBLE SECTION 0 in. long.Cover-to-Cover $$45..0000

3 CM, DIPOLE FEED, 15" L. for APS-15

$8.50

Cross-Guide Directional Coupler. CG-40 output flange.

Main Guide is 6" Long, with 911 Deg. "E" Plane

bend at one end, and is fitted with Std. UG 39/UG

40 flanges. Coupling figure: 20 db Nominal. $12.58

Bulkhead Feed-thru Assembly

$9.75

Pressure Gauge Section with 15 1h. gallee

$7.50

ADAPTER, uavesulde to type "N' . ITO 81-U. p/e

TS 12, TS-13, Etc

$6.50

I.F.F.

I186KWmc.Pualdjs.edmoOduutlpauttinPgkgp.ulseTsun4a-b1l0e mi1c54r-o

sec. comp. 115v 60 cy ac pwr. supply. Video output

receiver. New w/tubes

$200 00

Dipole Array for above

$10.00

COAXIAL R.F. FILTERS

F.29/SPR.2. Ill-Pass., with 1000 mc. Cut-off. Tmce

"N" input and output. 50 Ohms Z

$5.00

F.4/SPR.1. Hi-Pass. with 300 mc cut-off. Type ·'N"

input and output. 50 Ohms Z

$5.00

ANTENNA PEDESTAL SCR 584
Full azimuth and elevation sweeps 360 degrees in azimuth. 210 degrees in elevation. Accurate to I mil, or better over system. Complete for full tracking response. Angle acceleration rate: AZ, 9 degrees per second squared EL, 4 degrees per second squared Angle stewing rate: AZ 20 degrees per sec. EL, to degrees per sec. Can mount up to a 20 it. dish. Angle tracking rate: 10 degrees per sec. Includes pedestal drives, selsyns, potentiometers. drive motors, control amplidynes. Excellent condition. Ideal for Missile & satellite tracking, antenna pattern ranges, radar systems, radio astronomy, any project requiring accurate response in elevation and aimuth. Complete description in McGraw-Hill Radiation Lah. oratory Series. Volume I, page 284 and page 20 1 and Volume 26. page 233.
Prier on request.

ELECTRONICS

TS I2.AP complete with waveguides #1 & #2 units

-P.O.R. CF-2 CARRIER 6'x2'xl8"

$75.00

400 MC RADAR, complote set w/indlcators, control

boxes. XMTR. RCVR. connectors, less 2 cabl$e5s7.50

WE HAVE OVER 100,000 THERMAL RELAYS 1N

10 TYPES P.O.R.

PULSE EQUIPMENT

MIT, MOD. 3 HARD TUBE PULSER: Output Pulse

Power 144 KW 0.2 KV at 12 Amp). Duty Ratio: .001 max. Pulse duration: 5, 1.0, 2.0 microsec. In-

put voltage: 115 v. 400 to 2400 elos. Uses: 1-711 l. 4-89-11, 3-'72's, 1-'73. New... Less Cover-$60.00

ASO Modulator Units, mid. by Sperry. Hard tube pulser delivers Pic, pulse of 144 kw, Similar to Moil.

:: unit. Brand new, less tubes

$52.50

Airborne RF head, model AIA. delivers 50 Kw Dent

output at 90110 ma. at .001 duty. Complete will,

pulser unit and all tubes. Used. excel

$85.00

PULSE TRANSFORMERS

Westinghouse 4P37: Ptiolar,: :al ohm , imp. 750 v. Sec. 15 kv. 1000 01111IS itou. ltiltl,i r tuassent trans.

built in. delivers 12.6 v at 2.5 amp. (pri. 115 V. 400

cy.)

$17,50

RAYTHEON WX 4298E: Primary 4KV., 1.0 USEC. SEC: 16KV-10 AMP DUTY RATIO: .001 400

CYCLE FIL. TRANS. "BUILT-IN"

$22.00

WECO: KS 9948: Primary 700 ohms; Sec: 50 ohms

Plate Voltage: 18 KV. Part of APQ-11

$7.50

K-2745 Primary: 3.1/2.8 KV, 50 ohms Z. Secondary:

14/12.6 KV 1025 ohms Z. Pulse Length: 0.25/1 n

wire 1? 600/600 PPS. PK. Power 200/150 KW.

Bifillar: IS Amp. Has "built -In" magnetron

well

$15 00

It -2461.A. Primary: 3.1/2.6 KV-50 ohms (line). Secondary 14/11.5 KV -11100 ohms Z. Pulse Length: I usec et 600 l'US. Pb. Prover Out: 200/130 KW.

Ilitillar: 1.3 Amp. Fitted with magnetron well $17.50

FOR R & D EXPERIMENTS SUPPLIES Visit and see over 10.000 different Electronic Parts and assemblies. Hundreds of Wan Guide Parts. We welcome your phone inquiries.

COMMUNICATIONS EQUIP CO.

343 CANAL ST., N. Y. 13, N. Y. (Formerly 131 L)hrrtv .1
CHAS. ROSEN, WOrth 6-4045

II 'nerd,. guar, )lail order', promptly tilled. All prices F.O.B. N.Y.C. Send `1.0. or (

(1111

cligs. sent (..0.1). Itated Concerns send P.O.

CIRCLE 631 ON READER SERVICE CARD

QUIZ PIC

2

WHAT IN THE WORLD
(01 electronics)
IS THIS?
This is our idea of a little fun and recreation. Examine the magnified portion of this photograph . . . and see if you can identify this "tool of the industry." If you can't . . . turn to PAGE ELECTRONICS ad on page 219 for the answer.
CLUE: Brushing after every meal won't help
this needs cavities!

SMALL AD but BIG STOCK

of choice test equipment and surplus electronics

Higher Quality-Lower Costs Get our advice on your problem

ENGINEERING ASSOCIATES

434 Patterson Road

-

Dayton 19, Ohio

CIRCLE 633 ON READER SERVICE CARD 218

GLASS TUBING
PYREX - NONEX - URANIUM
BULB & CYLINDERS WRITE FOR FREE MONTHLY LIST

HOUDE GLASS COMPANY

PHONE COLFAX I- 17S011

P.O. Box 206

Keyport, N. J.

CIRCLE 634 ON READER SERVICE CARD

SPECIAL MELAESCTTERORNICS

99 50 ORIG. MFRS PRICE $249.00

NOW ONLY

SHIPPED VIA EXPRESS

FULLY GUARANTEED

BRAND NEW NEVER USED

HUNDREDS SOLD TO LABS

LIMITED QUANTITY

FAMOUS MAKER

MFR'S LIQUIDATION SPECIAL!
LAB VTVM

SPECIFICATIONS:

Ranges: DC 1-3-10-

FEATURES

30 -100-300-1000Y;

· Low input cap. 1.2 ILO
· -1 db freq. resp. 10 cps to 700 mc
· Small AC diode probe Ulnae 201C tube
· Sloping meter front · Separate AC & DC
zeroing controls

AC 1.3-30-100-300V. Resistance ran ·es: 0.2 to 500 meas. Accuracy: DCV 2 %, A C V
Input Imp: DC 100 megs on all ranges. Input resistance Is approx. 7 meas. Power Supply: 1 1 0120V, 60 ey., 20

watts. Size: 6%" w.

o 10 I," h. x 7" d. Wt. 7 lbs.. shpg. 14 lbs. Alumi-

num gray hammertone cabinet; with power cord &

instruction book.

SOLD TO LABS, SCHOOLS, SHOPS,

AND INDUSTRIALS BY MAIL!

SALE-while quantities last! -
TEST EQUIPMENT BELOW FACTORY COSTS
NEW and used eopt from famous companies such as RCA, Hewlett-Packard, others. Many one and two of a kind. Complete listings available at no cost or obligation.
SEND FOR LIST OF PRODUCTS ON SALE!
WE WILL BUY!
USED TEST EQPT.
SEND us your list of electronic test ecipt for appraisal. You may be surprised at how much they are worth.
WE WILL BUY!
SEMICONDUCTORS
WANTED: production line overruns & inventory surplus of any type semiconductors. Send us your lilts!
WE WILL BUY!
COMPONENTS
ELECTRONIC parts of all types wanted! Ranging from small components to meters and testers. Send us your lists.
MASTER
ELECTRONICS
189 HIGH ST., BOSTON, MASS. · EST. 1931
CIRCLE 635 ON READER SERVICE CARD
electronics

SEARCHLIGHT SECTION

Adverlisement
INTERESTING

...- · .
et 584- MP 61B -------A.NTENNA PEDESTAL .

SCR 584 RADARS AUTOMATIC TRACKING

Full azimuth and elevation sweeps 360 degrees

TO NOTE

... in azimuth. 210 degrees in elevation. Accurate to 1 mil, or better over system. Complete for full tracking response. Angle acceleration rate:

AZ, 9 degrees per second squared EL, 4 degrees

per second squared. Angle slewing rate: AZ

NEW YORK, N. Y. Feb. 1962:--

20 degrees per sec. EL. 10 degrees per sec. Can mount up to a 20 ft. dish. Angle tracking

Universal Relay Corp., 42 White

rate: 10 degrees per sec. Includes pedestal drives, selsyns, potentiometers, drive motors,

St., New York 13, N. Y. announces

control ampildynes. Excellent condition. Quantity in stock for immediate shipment. Ideal for

3 CM & 10 CM. Our 584s in like new condition, ready to go, and in stock for immediate delivery. Ideal for telemetry, research and development, missile tracking, satellite tracking, balloon tracking, weather forecasting, antiaircraft defense tractical air support used on Atlantic Missile Range, Pacific Missile Range, NASA Wallops Island, A.B.M.A. Write us. Fully Dese. MIT Rod. Lab. Series, Vol. 1, pps 207210, 228, 284-286.
AN /TPS-1D RADAR
500 kw. 1220-1359 mcs. 160 nautical mile

the publication

of

their

52

page

missile & satellite tracking, antenna pattern ranges, radar system, radio astronomy, any

search range P.P.I. and A. Scopes, Mil. thratron mod. 5126 magnetron. Complete system.

Spring 1962 catalog. With publication of the catalog, they inform

project requiring accurate response in elevation and azimuth. Complete description in McGraw-Rill Radiation

AN/TPS 10D HEIGHT FINDER
250 KW X-Band. 60 & 120 mile ranges to 60,-

their customers that "normal inventory includes over 1,500,000 re-

Laboratory Series, Volume 1, page 284 and page 209, and Volume 26, page 233.

000 feet. Complete.
AN/APS-15B 3 CM RADAR
Airborne radar. 50uw output using 725A mag-

lays in approximately 30,000 types. In most cases stock is sufficient to

2 MEGAWATT PULSERS

netron. Model 3 pulser. 30 in. parabola stabilized antenna. PPI and "A" scope. Complete system. $1200 each. New.

give immediate delivery of production quantities.
This catalog is, therefore, not

(A) 31 KV at 60 amos .002 Duty Cycle Ideal for 5126 at 500KW 5C22 Thvr. $950.
(8) 30 KV at 70 amos .001 Duty Cycle 5C22 Thyr. $1250 %v /.pulse trans.
MIT MODEL 9 PULSER 1 MEG AWATT--

10KW 3CM. X BAND RADAR
Complete RF head including transmitter, receiver, modulator. Uses 2J42 magnetron. Fully described in MIT Rad. Lab. Series Vol. 1, pps. 616-625 and Vol. II, pps. 171-185 $375. Complete Radar System $750.

just a listing of items available 'on order' but, by and large, it is an indication of in-stock items (either as complete units or as ready to assembly components).

HARD TUBE
Output pulse power 25 KV at 40 amp. Max. duty ratio: 002. Uses 6C21 pulse tube. Pulse duration .25 to 2 microsec. Input 115 volts 60 cycles AC. Includes power supply in separate cabinet and driver. Fully guaranteed as new condition. Full Desc. MIT. Rad. Lab. Series "Pulse Generators."
500 KW PULSER

10 CM. WEATHER RADAR SYSTEM
Raytheon, 275 KW output S band. Rotating yoke P.P.I. Weather Band. 4, 20 and 80 mile range. Price $975. complete. Has picked up clouds at 50 miles. Weight 488 lbs.
CARCINOTRON
Type CM 706A Freq. 3000 to 4000 mcs. CW.

The average shipment is made

5C22 Hyd Thyr Modulator. 22KV at 28 Output 200 Watts minimum. New, with full Amps. W/HV & Fil Supplies. 3 pulse guarantee.

within 48 hours. Where coils and frames require assembly, or relays require special testing or adjust-

length rep rates: 2.25 usec 300 pas. 1.75 usec 550 pps. .4 user 2500 pps. 115V 60 cy. Will deliver nominal 225 KW X Band using 4.150 magnetron.
MIT MODEL 3 PULSER

VA-800 KLYSTRON
1.7 to 2.4 KMC. (continuously turnable). 10 KW. CW. 50 db Gain output UG435 A/U Flange $975 each.

ment, shipments are made within

Output: 144kw (12kv at 12amp.'. Duty ratio: 001 max. Pulse duration- .5 1 and 2

one week to ten days.

micro sec. Input: 115v 400 to 2000 cps $325 ea. Full desc. Vol. 5 MIT Rad. Lab, series

pg 140.

Universal is completely equipped to assemble, adjust and thoroughly test any type of relay. Assembly and test facilities have been imitated by some relay manufacturers.

L BAND RF PKG.
20KW peak 990 to 1040MC. Pulse width .7 to 1.2 micro sec. Rep rate 180 to 420 pps. Input 115 vac. Incl. Receiver $1200.

Fe RADIO RESEARCH INSTRUMENT CO.

550 FIFTH AVE., NEW YORK

JUDSON 6-4691.

--

CIRCLE 636 ON READER SERVICE CARD

A personal interest is taken in every order. This interest is main-

QUIZ PIC ANSWER # 2

tained as the order is processed. And, it continues even after the customer receives the merchandise until he makes sure that it satisfies his needs.
All merchandise is guaranteed, subject to customers' inspection and approval, and may be returned within 30 days for replacement or credit.
The catalog is full of items to fill everyday relay requirements".
Catalog E-162 may be obtained by writing directly to:
UNIVERSAL RELAY CORP.
42 White Street, New York 13, N. Y.
WAlker 5-6900 CIRCLE 640 ON READER SERVICE CARD

IT'S A TYPE 2K28 KLYSTRON ... OUR I.R.E. SPECIAL AT $37.00

PAGE

We carry a complete list of current and hard-to-get TUBE TYPES . . . including ELECTROMETER · TRAVELING WAVE · PHOTO-MULTIPLIER · POWER · KLYSTRON MAGNETRON · THYRATRON · VOLTAGE REGULATING
X-RAY · RECEIVING · ORTHICON · RECTIFYING mCaalnlufaocrturwerirt.e for prices on any tube type . . . by any

ELECTRONICS

136 Liberty Street New York 6, N. Y. · Co 7-4245
24 Hour Telephone

FREE... Ta ticiriIP ECT. BARRY ELECTRONICS

CIRCLE 632 ON READER SERVICE CARD HEAT FLUSHING BLOWER BARGAIN

512 BROADWAY

WAlker 5-7000

NEW YORK 12, N.Y.

TM- NY 1-3731

CIRCLE 638 ON READER SERVICE CARD

FOR LEASE OR SALE
Plant suitable for experimental, electronic and production work. Fully equipped with machine tools. Location Long Island, Approximately 25,000 feet including air conditioned offices. Approximately 6 years old.
80-15239, Electronics Class Adv. Dis., P.O. Box 12. N. Y. 30. N. 1.
CIRCLE 639 ON READER SERVICE CARD

A large quantity of

packaged twin blow-

ers itunnt· 400 `4°° '

Unit consists of twin 4" centrifugal blowers pow-

ered by

HP-single phase-220-AC-continuous

duty, ball bearing motor. Unit contained in

cabinet as shown. Overall dimensions: Approximately 27 1/ 2 " x 8" x 8" or 22 ,/s" x8" x 8". Will operate on 110V-AC without reconnecting wiring.

Priced for quick sale at....$22.95 each

6or more units. .819.95 each FOB--NYC Warehouse

ELECTRIC TRADING COMPANY

313 Canal St., N. Y. r3. N. Y.

CAnal 6-0575

CIRCLE 637 ON READER SERVICE CARD

March 9, 1962

219

SEARCHLIGHT SECTION

"TAB" FOR TRANSISTORS & DIODES! !!!

Full Length Leads Factory Tested 6. Gtd! U.S

Mfg.

PNP Hi Power 15 Amp, 703 & 7036

Pckg. 2N441, 2N277 $1.25 X",.. 10

for 511; 29442, 2N278 $31 , , 4 for

$101 274443. 2NI74 $4 e. ,4 for $.14;

29677 51 ,d , 12 for $10, 29677A 52(a., 6 .or 5101

29678 530 , . 4 for $10, 2N677G $5<P', 2 for SR,

3 AmP ,2N155, 29156, 29255, 214256, 29307, as.

554 50e 11. 5 for $2, PNP 29123, 29107.

CK722 5 for $1, NPN 29292. 293, PNP 2N-

223 30c

12 for $9, 100 for $651 PNP

29670 300MV./ 50c S . 10 for $4: PP 2N

eg 671 1 Watt 75e P. , 10 for $6: Round o,

Dmmond Base Mica Mtd Kit 30c at

Powx

Heat Sink Fins 80 So $1.391 Kit Glass Dice',

050,0. 19344. 46. 48, 51, 12 for 51. 100

for $6. 1000 for $50.

ZENER DIODES 150 to 400 MW Cased TO24 PM, Within 20.. V .Range Si. 3 for $2. 20 for $10. HIT ZENER DIODES up to 400 MW 2 for $1 KIT DOUBLE ENDED ZENER DIODES 2 for $1.

NEW BATTERY CHARGER

BC612X

Fro 6 or 12 %on Batteries

Irlekle & Full Charge up to

III amps Charges Il & 12 enit

batteries.

Built ready to use

BC612X

.....$14.00

BC612B up le 2 amps s7 45

Two 866A's and FILAMENT XFMR 10 Ku insltd SPECIAL

$6

"TAB" SILICON 750MA" DIODES ·:i.îi1«,?-7

NEWEST TYPE! LOW LEAKAGE **

D.C. or Batty. ['crate 20%

rms/piv 35 150

, rms/p1v 70'100 .17

rms/piv 140/200
.22

rms/piv 210'300
'31

AC
Ce
DC

roll/pin 283/400
.38 .........
rina/ph., 56%4100

r"'e 350

100

¡

.50

......... rms

i 630.9 :00

420/600

i

.63

rMs/piv 70 1. 44100

...4147P1 1··· · 490!700

L

.77

......... rins/111"

A

7701 /4400 n

Diode order $10 shipped Post free

1

law Priced Rated 400 pie/

2T8ROOr(mlsSi@li3c0on0MDaioadeIs00

.

12

.25 each; 30 for 57; 100 for $22; 500 for $100

SILICON POWER DIODE STUDS *

Operation Up to 125 °C Case Temp.

D C
2 3 6 12 35 70 240
D.C. Amps
2 3 6 12 35 70 240

50Ply 35Rms
.25 .60 .70 .85 1.80 3.75 4.50
300P1v 210Rms
.80 1.50 1.75 2.00 4.95 10.80 19.60

100Piv 70Rms
.35 .85 1.00 1.20 2.15 4.50 5.70
400Piv 28CRuns
1.00 1.80 2.00 2.20 6.10 15.30 29.75

150Piv 105Rms
45 1 00 1.25 1.50 2.50 4.95 6.90

200Piv 140Rmx
.55 1.25 1.50 1.71 2.90 5.60 8.40

500Piv

600Piv

3508,08

42080,6

1.50

1.95

2.10

2.65

3.70

5.20

3.90

5.70

, FOR QUANTITY

Export & User P ice.

Write on Company

Iterate 20% for Battery or Capacitive Load or D.C. Blocking! *Stud mounted on Heat-sink

Old!

Octal

Silicon-5U40-Tube

Replacement

11213.11m· 1600 Pif $4

2 for 56; 4 for $10;

504 Silicon 19002800 Pin. 54; 866A 5,1,000

5000/10400 Pif $9. Ready to plot into tHbe

socket.

TRANSISTOR POWER CONVERTER 12vDc to 500VDC up to 200MA 100W tap at 250VDC 08500 $30 12VDc to 250VDC up to 150MA
Type C1225E $27

- SUPERIOR" Powerstat -10 Variable %f,,,, 165 Watt 0 to I32V Special $6 each; 2 for $10

"TAB" BARGAINS

Scr, varri acszor gsmr. 0-1:3-.3 7
New Varlacs/or equiv 0.135V/3 )r·N1ETER DOM. ROO Ma/2 1 /2 " DC NITR 100Ma/2 1 /2 4 6900PERSCOPF. TLIIIE 2" .IINI-FAN 0 or 12VAC/60 Cys

Antp.. 53 $3 gs $2

0 15.30
/.1..510.65
11. , 2 59
1, , 3/55

D.C. POWER SUPPLY 115V 60 to 800 Cys Inpt. 1 330 & 165VDC Up to 150 MA. CAGED! SPECIAL 55

10 WATT ZENER DIODES

GI-IRC-TI-NAE-HO , FMAN-HUGHES

191351 191352 1NI353 191354 1N1355 191356 119911335578 1N1359
1N1360 INI361 1N1362 191363 191364 IN1365

191366 191367 191368 191369 191370 191371 119911337723 191374 1N1375 191603
1N1605 191606 191803

191805 191806 191807 191808 191809 1N18t1 119911881123 1N1815 191816 191822
191835 1N1836 192010

192045 1N2040 1N2498 192500 192974 192979 11N9229919,100 192991
192997 1N3004 1N3007 193012 1NHZPR32 INH2PR56

10WATT (ONE TYPE) $5 @. 12 for $48. 30 for $100 WRITE FOR OTHER LIZES & TYPES
WE BUY! SWAP & SELL SEMICONDUCTORS WANTED TRANSISTORS-DIODES-ZENERS!!!

"TAB 91 TERMS: Money Back Guarantee! Our 18th Year. $2 min. order F.O.B. N.Y.C. Add shpg charges or for C.O.D. 25% Dep. PrIces shown subject to change.

111.EE Liberty St.. N.Y. 6, N.Y.

Scud 25c

for Catalog

PHONE, RECTOR 2.6245
CIRCLE 649 ON READER SERVICE CARD

220

CAPACITORS

MFD VOLTS

·.025 ·t.2
t.25

50KV 50KV 15KV

t.25 20KV

P.25 :12.5KV

t.5

25KV

t' 1 7500V

t 1 25KV

PRICE 29.50 64.50 15.95 22.50
44.50
29.50 8.00
59.50

MFD VOLTS

t 2 0000V

t 2 16KV

3 20KV

45 'IMOOK'V

t 10

11000K0VV

t 15

5000V

120 30011V

PRIC: 24.50 69.95 125.01 67.51 70.51 115.0C 45.0e 48.0' 52.50

PLUS Oil bathtub. channel & tubular types. reeeiving and transmitting capacitors. ·Case Comnion
Large qua. mailable

Also 1111,11

IV, ;fr re, e, mph lo

MONMOUTH RADIO LABS.

BOX 247-OAKHURST, N. J.

CAPITOL 2-0121

ART HANKINS, Prop

CIRCLE 646 ON READER SERVICE CARD

COMPUTER DIODES

Brand new in original manufacturer's mg at o, fraction of large quantity
priceS.
56,000 Hughes HD-2311 20,000 Hughes HD-6079 49,000 Sylvania IN-115
3,000 Sylvania IN-119 1,500 Amperex IN-480

packOEM

To be sold as a complete lot, individual lots or any quantity of any number and priced
accordingly. Write or phone your requirements. Quotation by return mail, or phone.

CAPITOL COMMODITIES COMPANY, 4757 N. Ravenswood Avenue Chicago 40, Illinois
ALL PHONES: LOngbeach 1-3355

Inc.

CIRCLE 642 ON READER SERVICE CARD

One of America's largest inventories of industrial COOLING DEVICES AND EQUIPMENT
· A LARGE VARIETY OF TYPES CENTRIFUGAL AND PROPELLER FANS
· A WIDE SELECTION OF 511r-S 10-5000 CFM · MOST ELECTRICAL CHARACTERISTICS · OFF-THE-SELF DELIVERY AT LOW, LOW PRICES
A LARGE INVENTORY OF MOTORS, LIQUID & VACUUM PUMPS & AIR COMPRESSORS

Send For Brochure Complete With Photos and Prices
('

ELECTRIC TRADING COMPANY
713 Canal St., N. Y. 13, N. Y. Canal 6-0575

CIRCLE 647 ON READER SERVICE CARD

TRANSCO "Y" Type Coaxial Switch

SPOT
Miniature Light weight CoAx switch with low VSWR and broad band width. Works to 11 KMC. Separate actuator coils for each circuit. Type "N" connectors, 50 Ohm nominal impedance. Actuator voltage 28 volts DC, 6 Watts each coil. TRANSCO Number 11100 Our price 620.00 each. LARGE QUANTITY AVAIL-
ABLE.
"RED" JOHNSON ELECTRONICS

3311

PARK BLVD., PALO ALTO, CALIF. DAvenport 6-6085

CIRCLE 648 ON READER SERVICE CARD

SEARCHLIGHT Equipment

Locating Servic C

No Cost
Or Obligation

'11h. 5ÇV5t is aimed at helping you, tile reader of "SEARCHLIGHT". I,, brute Surplus new and used electronic equipment and Components net et, rently advertheea. (This service Is fur USKItBUYERS only). How to use: Cheek the dealer ads to see if who, yogi want Is not currently advertised. If not. senrl us the sperritleations of the equipment wanted or, tile e0110011 below, or on your own comPanY letterhead tic
Searchlight Equipment Locating Service

cío ELECTRONICS

P. O. Box 12, N. Y. 36, N. Y. 1cur requirements will im Mougla prmnptly to the
:1,1,1 jolI f.f the equipment dealers advertising in .11, , ,et·t ion. You will receive replies direetly from ·le In

********************

* *

Now Available!

* *

* * *****

ONE AIR

STORY COND.

* *
*
I*I

*

Ultra Modern Plant

*

1.38,000 *
****

sq. ft.
North Carolina

* ** **

*

Acreage. Undercover tailgate truck

*

loading. All utilities. Favorable

*

taxes. 100% Sprinklered.

** BINSWANGER

*

CORPORATION * Southern Division

*

Industrial Location Specialists

*

1420 Walnut St., Phila. 2. Pa. · PE 5-0202

*
* * *
*
*
* *

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ee,

·

can deliver Amphenol

t14., Bendix f\t:1
el Cannon CONNECTORS
1FITTINGS & CLAMPS We stock more than 5,000,000 MS/AN CONNECTORS . . . of 50,000 variations! In PRODUCTION QUANTITIES . . . we Sell
1BELOW "0.E.M." PRICE . . . and offer

FREE IMMEDIATE

"OFF-THE-SHELF" DELIVERY!

... aSen'c'ld

tor prikc'elesclha brtrochu re

WILGREEN INDUSTRIES, Inc. 102 Warren Street, New York 7, N. Y.
WOrth 4-2490-1-2 Wire: FXK
ereteree'er're'reVXPIP,..,r.r.r.r , e,e'crgrvv-rer .er..-...
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Searchlight Equipment Locating Service
c/o ELECTRONICS, P.O. Box 12, N.Y. 36, N.Y. Please help us locate the following equipment comronents.
GAME TITLE COMPANY STREET CITY

SERVO ENGINEER'S HANDBOOK

DAYSTROM. Worcester, Pa..

Inc., 128

oaTsreasn.si$c3o.i0l0.

Div.,

Dept.

E.

· This guide to the application of servomechanisms deals with the individual components and how to use them, although basic theory is presented, the overall treat nent is ora·tical rather than classical. There are eight chapters, foreword, appendix. 61 diagrams. and 65 major equations.
Send check for $3.00 or P.O.

CIRCLE 645 ON READER SERVICE CARD

electronics

SEARCHLIGHT SECTION

RADAR and MICROWAVE

TEST EQUIPMENT

e fr

NEW and AS NEW

fr

fr

fr

e e

Checked Out TEST EQUIPMENT for your Laboratory and Radar needs

42: : PIB I

k... 400 A

e`· ;

:LI c
402 A

di TSIO

,Ç TS12

e, Ilg Fe TS1SA

0 TS22
e iTT. :5 33.11.

;MA 7536 TSIS TS46

Pulse Imoedance Bridw. Ciega

Labs

Hewlett Packard Signal G

Hewlett Packard Signal G

H·wlett

VTVM

H·wlett Packard VTVM

Sylvania Oscilloscope

Sylvania Sy cccccc cope

Calibrator

Standing Was. Amplifier

Gauss Meter

Callb

Calib

Synchroscope

WE X Band Frequ·ncy Meter

WE Synch 00000 pe

WE Synch r

WE X Band Signal G

tar

WE X Band Signal Generator

WE X Band Power Meter

X Band Signal Source

S Band Fr rrrrrr y Metier

400.00 695.00 750.00 125.00 135.00 100.00 100.00
35.00 100.00
75.00 45.00 95.00 150.00 95.00 100.00 150.00 95.00 150.00 90.00 99.00 45.00

TS47 TOSO TSOI 7562 TS69

40-400 MC Oscillator L Band Delay Echo Box S Band Echo Box S Band Freq. Calibrator 400-1000 MCS.

145.00 35.00 90.00
125.00 99.00

TS76 750 9 75100

Test Meter Motor Voltage Drop Oscilloscope

35.00 99.00 75,00

TS102A 75108 TS110 TSII7GP TSI25 TS176 75146 75147 TS14713

Calibrator Load X Rand Echo Boa S Band Frequirncy Meter .. S Band Powitr Meter Oscilloscope X Band Signal Gen rrrrrr Wide Band X-Band Signal G·ner-
»t WideerBand X-Band Signal Cenar -

125.00 90.00 45.00
325.00 195.00
45.00 195.00 695.00

795.00

T51470

Wide Band X-Band Signal Gen..-

75140 TS155

ator Mt Analyzer
S Ba nd Signal

1,695.00 1.695.00
021.00

TSISSC

S Band Sismal G

595.00

75173

Frequency Meter

225.00

TSI74

Freq rrrrr Meter

275.00

TSI75

Frequency Meter

195.00

TS175C

Freq rrrrr Meter

225.00

75182

VHF Oscillator & Power Matar

45,00

75183

B

T

35.00

75226

Frepuency Meter

45.00

75739

OscIlloacop·

895.00

75251 75270

Range Cali Echo Box

rr

175.00

174.00

752708

Echo Box

175.00

75270B

Echo Box

229 00

75403

S Band Signal Generator

1.25a CO

75419

L Band Sional G

1195.00

75488A

Echo Bo. X Band- N·i·

496011

75045

L Band Echo Box

95.00

TSS77

Telephone Test Set

295.00

75666

Callb

125.00

EPUT5S4 Berkley Irrrrr ments Fr rrrrr 42

ge,,,,,.i3.7. 25. Meter
RCAMI-7519E Distortion & Nels· Analyzer 2160. 4 11. 6. 1A. 30. 33.

395.00 150.00 42, 44,

r.i.;riei 5i Telreiri 1.42 iIt2.;

.

.

11"513=

Model 64. General Radio Signal Generator 605B rr Power Supplies

750 00 295.00 ('

Radar Pulsers to test Magnetrons

695.00 do

New...250KW X-Band RF Generator
Uses 4.150 Magnetron with dummy load and direr.

ex,

tional coupler.

Variable repetition rates and

·

Power output. Power input 115V. 50-1000 4241·,.

Unit vice, 30"2413"228"-mounterl on caste rs.

y

PRICE ON REQUEST.

2/(22 21(23 2K2S 21526 21520 21(29 2I(33A 21539 21541 2/(42-4 21548
2321 2130. 1131. 2132-34 2.136.
337/30 .142. 148/50
151A 2.155.

KLYSTRONS

25.00 25.00 12.00 35.00 27.50 29.50 200.00 170.00 99.00 170.00
55.00 and

21450 21554 21555 21556 D17/38461 X138 V23 V45 V270 . 5721
VA20113 others

MAGNETRONS

rr rr

r

12.50 37.50 12.50 17.50 17.50 22.50 55,00
25."
55.00
95.00 125.00

2 56A 2.161-62 2.1161A-62A 3121 3131 4131/39 4152 475 " 4160-62
and others

99.00 24.00 35.00 50.00 60.00 225.00 350.00 450.00 225.00 110.00 225.00
66.00 35.00 75,00 50.0 60.0 135.0 45.0 135.0 135.0

-

STANDARD LABORATORY RECEIVERS

AP134

5195.00

APR4 iw/5 tunin·

APTO APTO

$180.00 186 00

unit.)

895.00

APS4

228.00

APRS APRSA .

180.40 180.00

APS10 APS23'trans)

69 5.n° 19600

APR9 APR10

P. U. R. 188.00

APS32 K band

radar

875.00

APT2

75.00

APS31 PARTS

APS44 a ethe rs P. U. R.

SPECIAL PURPOSE TUBES

0A2. 0A2WA 0A3
OB2 OB2WA OB3
0C3 OD3 CIA IAD4 1B24A
1835A 18634 IC '3822
CI K 1P21 1P22 1P25 IP28 1Z2 2-01C.... 2AP1A
2823
213P1 2C36 2C39A rrrrr 2C39B 2C40 2C42 2C43 2C46 2C50 2C51
2C52 2C53 2021 2D21W 2E22 2E24 2E26 2J42 2J51 2J55 .. 2K22 2K25 2K26
2K28 2K29 2K30
2K33A 2K34
2K35 2K39
2K41
21(42 2K43 2K44 21(45 21(47 2K48 2K50 2K54 2K55
2K56 2P2I 2X2A
3A5 3AP1 3B24W . 3824 WA
3825 3826 3E128 3B29
3BPIA 3C 4624 3C22
3C23 3C24 24G 3C33 3C45 3CX100A5 3D21A 3022 3DP1A. 3E29 . .
3GP 1 C3J C3J A
3J2I . 3J3I 3JP1 3K21 31(22 31(23
3K27 31(30 3KP1 3RPI
3WP1

.80 4-65A

10.00 25Z6WGT

1.50 7254

10.00 5751WA...

1.50

2.00 4-125A

20.00 26Z5W

1.50 726A

5.00 5763

1.75

.85 4-250A

32.50 FG -27A

20.00 7268

5.00 5777. .

150.00

.60 2.00
.70

4-400A 4-1000A 4APIO

30.00 90.00 10.00

28D7W FG -32 35T

3.50 6.50 10.00

726C 750TL 802

8.50 5778 100.00 5783
5.00 15787

150.00 1.75 2.00

.50 4831

12.50 35TG

1,50 803

3.50 5796

8.00

.30 4C35

15.00 FP-54

100.00 804

15.00 5800 VX-4I

5.00

6.50 1.50 10.00

4CX250B 4D32 4E27

3155..0000

FG -57 RK-60 1641

10.0 HY-69

6.00 1.25 3.00

805 807 807W

5.00 5803 ,VX-55.. 1.35 ¡5814A 1.75 '5829

2.25 1.35 1.00

3.00 4J32.

.100.00 BL-75

3.00 808

1.00 5830 'FG41

100.00

10.00 4J34 5.00 4J50

100.00 TG-77 100.00 HF -100

7.50 809.. . 10.00 I810

5.00 I5836... 15.00 '5837.,..

50.00 50.00

6.00 32.50
8.00

4J52 4PR60A 4X150A

35.00 60.00 15.00

100TH 100TL .. FG -105

12.00 12.00 15.00

811. . 8114 812A

2.50 5840.. 4.00 5845.. . 4.75 ,5852...

1.50 6.00 3.00

10.00 4XISOD

15 00 F-I23A

5.00 813. ..

12.50 5876. .

8.50

15.00 4X150G

25.00 FG -172

25.00 814

3.50 5879

1.25

1.50 12.50
6.50

4X25013 4X2SOF 5BPIA

25.00 30.00
9.50

211 212E . FG -735

2.50 25.00 40.00

815 816 .. 826...

2.50 ,5881 6L6WGB. 2.50

2.25 5886.

3.25

3.50 5894

18.85

20.00 5C22

17.50 242C

10.00 828 ,

12.50 5915

1.00

8.50 22.50
9.75

5CP1A 5CP7A 5021

9.50 9.50 7.50

244A 245A 2498

3.50 8298 3.50 832 . 10.00 832A

9.50 2.50 7.50

5931 SU4WG 4 00

5933 807W.

2.50

5948 '1754... 75.00

18.75 7.50 3.00 7.50
5.00

5.126 5JP 1 5LP1 5R4GY
5R4WGA

50.00 7.50 7.50 1.10
5.00

249C 25OR 250TH 2514
2544

5.00 833A 10.00 834 25.00 ,836 50.00 '837
3.50 838. .

37.50 5949 7.50 5963 2.50 5964 1.00 1 5965
1.00 5976

1907... ..

50.00 1.10 .85 .85
55.00

4.00 5R4WGB 1,50 5R4WGY

6.00 FG -258A 2.75 '259A

75.00 842 3.50 845

7.50 5992.. .

2.50

1.50 ,SRPIA

9.50 2628

3.50 849

75.00 6002 '0K221..250.00

8.00 SY3WGT .50 5Y3WGTB

1.25 267B 3.00 271A

5.00 851 12.50 866A

35.00 '6005 0405W. 1.00

1.90 '6012

3.50

1.00 6AC7W

.50 274A

3.50 8698

50.00 6021A

2.00

2.50 6AC7WA

2.00 283A

3.50 ,8724

5.00 6027/2J42A. 100.00

2.25 2.50 70.00 50.00

6AG5WA 6AG7Y 6AKSW 6AKS (WE)

1.50 ,287A .90 OK-288
1.00 HF -300 .75 3008

3.50 1874 250.00 884
35.00 885 5.00 902-P1

.75 1.25
.85 3.50

6032 6037 6045 6072

. . 0K243.

10.00 50.00
1.15 1.50

90.00 6AL5W

.60 304TH.

25.00 913

9.50 6073

1.00

25.00 8.50
35.00

6ANS 6ANSWA 6AQSW

1.75 3.50 1.00

304TL 3074 310A

35.00 .50
3.50

920 927 931A

2.50 1.50 3.50

6074 6080 6080WA

2.00 3.25 5,00

30.00 25.00 50.00

6AR6 6A56 6AS6W

.75 .85 1.00

311A 313C 323A

3.50 1.50 6.00

1000T R11308 1500T

80.00 10.00 150.00

6080WB

10.00

6082.

2.50

6087 SY3WGTB 3.00

200.00 6AS7G 75.00 6AU6WA

2.50 328A 1.25 336A

3.50 1603 .. 2.50 1611

4.00 6101 6J6WA 2.00 6106

1.00 1.50

200.00 6B4G 150.00 61346W

3.35 337A .75 3474

3.50 1614 . 1.00 1616

2.75 6115 OK351. 50.00

1.00 6130 3C45

5.00

50.00 68E6W.

1.50 3484

4.50 1620

4.00 6136 6AU6WA. 1.25

125.00 6BH6W 175.00 61316

2.75 349A 20.00 3504

3.50 1624 3.50 1625

1.00 6146 . .50 6159

3.00 3.50

125.00 613M6 20.00 6BM6A

25.00 3508 30.00 352A

2.50 1635 8.50 1846 ...

2.00 ,6161 .

35.00

50.00 6186 '6AGSWA 1.50

125.00 6C4W

2.50 3544

12.50 1855

250.00 6189 '12AU7WA 1.50

50.00 6C4WA 80.00 6C21

1.00 355A 17.50 3718

12.50 2050 2.50 ZB-3200

1.25 6197. .

1.75

100.00 6201 '12AT7WA 1.85

10.00 604 15.00 6F4

1.50 388A 3.50 393A

2.00 5528 'C6L 5.00 5545

3.50 6202 '6X4WA 20.00 6211

1.50 75

50.00 C6J 40.00 C6J A

10.00 3944 15.00 3954

3.00 5550 2.25 5552 'FG235

30.00 6216 50.00 6233

2.85 100.00

1.00 C6J K

20.00 3964 2C51

1.50 5553 FG258

75.00 6236

125.00

.75 6J4 3.50 6J4WA

1.50 398A 5603 2.50 4014 5590

3.00 5557 FGI7 1.00 5558 FG32

5.00 6248 6.50 6263

500.00 9.00

3.00 6J6W 5.00 6J6WA

.60 403B 5591 1.00 4044 5847

3.00 5559 FG57

6.00 '6264....

7.50 5560 FG95 . 20.00 6265 6BH6W..

9.00 2.75

2.50 6K4

2.00 4074

3.75 5561 FG104

40.00 6299

37.50

2.25 3.00 5.00

6L6GAY.75

6L6WGA

1.50

6L6WGB

2.50

4084 6028 4094 6A56 410R

3.25 1.00 75.00

5636 5642 5643

2.25 2.00 3.00

6316 '81800A. 100.00

6322 131.25.

15.00

6336

8.75

5.00 4.00 25.00

605G 65.17WGT 65K7W

2.50 1.25
.75

4168 6280 4174 5842 418A

35.00 9.50 9.50

5647 5651 5654 '6AKSW

3.50 6336A

12.75

.75 6344 '0K235. 500.00

1.25 I6352 . .

7.50

4.00 7.50 7.50 3.50 15.00

6SK7WA 6SL7WGT 6SN7W 6SN7WGT 6SN7WGTA.

2.00 1.00
.50 1.00 2.50

4204 5755 4214 5998 422A , 4294 GL-434A

. 5.00 ,5656.. ... 7.50 5663 ..
10.00 5665 'Cl6J 6.50 5667 7.50 '5670

5 00 6385 1.00 6390 35.00 6394 125.00 6438. 1.00 I6463

6.00 125.00
10.00 5.00 1.00

2.50 6SU7GTY

.85 450TH

40.00 5672

1.75 6485

1,75

8.00 5.00 7.50

6V6GTY 6X4W 6X4WA

.90 .75 1.50

450TL 575A 578

40.00 15.00
5.00

5675 5678 5686

8.50 '6517 '01(358. 500.00

1.25 6533

5.00

1.75 6542

5.75

1.50 6X5WGT 7.50 SRL7F

1.25 KU-610 100.00 NI-623

5.00 5687 8.50 5691

1.50 6550 5.00 6807

3.50 20.00

9.50 SRL7H

100.00 631-PI

5.00 5692

2.50 6897

20.00

35.00 741(7

2.50 673

15.00 5693

3.50 7034 '4X150A 15.00

50.00 5.00
125.00 125.00

7MP7 10KP7 12AT7WA I2AU7WA

22.50 15.00
1.50 1.50

676 677 7014 703A

25.00 40.00
5.00 1.50

5696. 5720 FG33 5721. 5725 6AS6W.

.75 17.50 115.00
1.00

7044 80028 8005 8008

2.00 25.00
7.50 7.75

200.00 I2AX7W

1.35 7078

2.50 5726 6ALSW

.60 80134

5.00

150.00 12AY7 100.00 CI6J

1.00 NI-710 25.00 7I5C

9.75 5727 2D21W.

1.00 8014A

15.00 5728 FG67

10.00 8020

30.00 4.50

9.75 'FG -17 . 7.50 HK-24

5.00 7194 5.00 721B

12.50 5749 6BA6W. 5.00 5750 6BE6W

.75 8025A 1.50 9003

7.50 2.00

12.50 25T

10.00 723A B

3.50 5751 12AX7W 1.35 9005

3.00

WE BUY TERMINATION & EXCESS INVENTORIES
Phone WAlker 5-6000
MC& INC.
582 BROADWAY, NEW YORK 12, N. Y.
Cables. TELSERSUP · SEND FOR CATALOG ·

Prices are FOB shipping point

TO ORDER BY TELEPHONE: DIAL 916.68S-9582
western engineers
ELK GROVE, CALIFORNIA
SUPPLIERS OF ELECTRON TUBES SINCE 7932

Orders for less than $10 cannot be processed

CIRCLE 650 ON READER SERVICE CARD

INDEX TO ADVERTISERS

Audited Paid Circulation

· AC Electronics Div. of General Motors. 122

· AMP Incorporated

83, 100

APM Hexseal Corp

172

· Acme Electric Corp

103

· Ad-Yu Electronics Lab. Inc

226

Aerocom

42

Aerospace Corporation

78

· Ainslie Corporation

166

Air Express · Airpax Electronics, Inc

39 153

· American Lava Corp

77

American Machine & Foundry Co.

Potter & Brumfield Div

89

· American Super-Temperature Wires, Inc.

178

· Applied Research, Inc · Augat Bros.. Inc

86 176

Automatic Electric. Subsidiary of

General Telephone & Electronics

14

Automatic Metal Products Corp

196

· Continental Connector Corp Continental Electronics Mfg. Co Corning Electronic Components
· CTS Corporathin Cunningham
· Curtiss-Wright Corp.
Data-Control Systems, Inc · DeJur-Amseo Corporation
Delco Radio Delta Air Freight Delta Design, Inc Di Acro Corp Dow Corning Corp Drexel Dynamics Corp · Driver Co.. Wilbur B · Du-Co Ceramics Co duPont de Nemours & Co., Inc.
E. I · Durant Manufacturing Co

113 71 31 70
182 00
156 113
99 191 110 184 72, 73 170 159 170
65, 105 174

Let DYNASERT®
CUT COSTS, SAVE TIME!
The Dynasert Component Inserting Machine will pay for itself in ayear or less in direct labor savings. It feeds, cuts, forms, inserts and clinches a wide range of axial lead components -- up to ten times faster than by hand assembly.
And with the new Pantograph Positioning Table you get even greater economies. For use where multiple components of the same size are to be inserted in parallel positions.
Find out more. Write or call Mr. D. R. Knight, Dynasert, United Shoe Machinery Corporation, Boston 10, Massachusetts. Area Code 617, LI 2-9100.
Jimlist.
DYNASERT®
Try it for Yourself See us at Booth #4241 at the IRE Show

Babcock Relays. Inc Bausch & Lomb, Inc. Belz Industries · Bendix Corporation
Scintilla Division · Bird Electronic Corporation · Black & Webster, Inc
Bourns Inc. Bureau of Ships Burroughs Corporation
Electronic Components Div · Bussmann Mfg. Co

127 179 198
70 185 204 175 114
84, 85 124

CP Electronics Inc Cadre Industries Corp · Cannon Electric Co · Christie Electric Corp · Clevite. Electronic Components
A Div. of Clevite Corp · Clifton Precision Products Co., Inc · Cly-Del Mfg. Co · Coil Winding Equipment Co
Collins Radio Co Colorado Dept. of Development · Col bia Technical Corp

152 118
49 5
87 167 180
48 101
168

Ebauches SA · Eitel-McCullough, Inc. · Electrical Industries, Inc.
Electrodynamic Instrument Corporation
Electro Instruments Inc Electro Products Laboratories · Electronic Instrument Co., Inc.
(EICO) Electronic Measurements Co., Inc Empire Scientific Corp · Engineered Electronics Co · Erie Pacific Div. of Erie Resistor
Corp.

140 116 135
118 133 140
142 137 204 158
173

Fairchild Controls Corp Fairchild Stratos

108 198, 199

· See advertisement in the July 20, 1961 issue of Electronics Buyers' Guide for complete line of products or services.

222

CIRCLE 222 ON READER SERVICE CARD

electronics

got a mixer-preamp problem?
Whatever your problem in the application of microwave receiving equipment LEL can answer it with off-the-shelf hardware of practical up-to-the-minute engineering design--and performance that's just plain hard to beat.
One of more than 800 stock inixer-preamplifiers, the SAC-6 (illustrated) offers a combination of low noise, low power requirements, low weight and small size coupled with extreme reliability and ruggedness.

Series SAC -6

SPECIFICATIONS

Frequency Range

1.7-2.4Gc

Gain

20db (min)

Noise Figure . 10.5db (typ.)

Power

20V @ 8ma --20V 8ma

IF

30, 60 or 70mcs

IF (3db Bandpass) 12 or 20 db

See us at Booths 2106-2108 IRE Show

Filtron Co., Inc Fluke Mfg. Co., Inc., John Franklin Electronics, Inc

NOW 195 25 SS

Gardner-Denver Company

168, 169

Garlock Electronics Products

74

General Dynamics Electronics

139

General Electric Co. Power Tube Dept

117

General Electronic Laboratories, Inc

93

· General Instrument Corp. szentic lintor Division

Graphic Systems, Inc

1I2

· Gray Instrument Co

112

Greater San Jose Chamber of

Commerce

197

· Gudebrod Bros. Silk ('o., Inc

38

Harman Kardon Inc

· Dart 31antiftteturing Co

166

Hathaway Instruments, Inc

11

· 11413 don Co.,

W

171

& Bartlett Mfg. co

140

· Ilt·wlett-Packard (' Hexaeon Electric Co

m rOvslde Front Cover 104

· Bill Electronics. Inc

161

· Hitachi. 1.td.

16

Holt Instrument Laboratories

103

Hughes Aircraft Co.

Space Systems Division

141

· Hunt Company, Phillip A

138

Imtra Corp.

111

· Indiana Gent·ral Corp

28

· Industrial Test Equipment Co

1911

Institiiii. of Radio Engineers..134, 115, 151

· Itek Electro -Products ('o

151

· interelectronics ('orp.

121

International Electronic Industries, Div. of Standard Pressed Steel

119

· .1 F 1) Electronics Corp · Jennings Radio Manufacturing Corp.
Jerrold Electronics Corp

145 lfio
11

· Kay Electric ('o

1.15

Neithley Instruments, Inc

174

Kinney Vacuum Div. id New York Air

Brake CO.

163

· Riedel. A Division of Cohn Elect

111C.

3rd Cover

· Kyoritsu Electrical Instruments

Works, Ltd.

121

Afamily of Precise Thermistors

YSI produces a family of precise thermistors which match standard Resistance-temperature curves within ±- 1%.
loOs 6
4

RESISTANCE IN OHMS

,

2

10 4

\

I I 111111

I 1 111,1·1

6
4

_ 2

I

1.11.11

rtrIgt

10
o
4

2

TEMPERATURE IN °C

10 2

20

40

60

80

100

Resistance Temperature Characteristics --

Pal tial Range--YSI e44006 Therrnistors (10K).

You can now use stock YSI thermistors interchangeably as components in any temperature transducer or compensator
circuit without individual padding or balancing.

DATA

B1%asse 3002S

at 25 ° C. of:

31KK

3100 KK

100 K

·Each family follows the same RT curve within r"- 1% accuracy from
--40° to -- 150 ° C. · Cost under $5.00 each, with sub-
stantial discounts on quantity orders. · Quantities under 100 available from
stock at YSI now. ·YSI can produce precise thermistors
with different base resistances and
beta's where design requirements and quantities warrant.

For complete specifications and details write:

Akron Street, Copiague, L.I., N.Y. AMityville 4-2200
CIRCLE 264 ON READER SERVICE CARD
March 9, 1962

· See advertisement in the July 20, 1961 issue of Electronics Buyers Guide for complete line of products or services.

ma«. gm YELLOW SPRINGS INSTRUMENT CO., INC. maul 'JIM

Me @@@@@@
MICnr7f WE BICJE

Yellow Springs, Ohio

CIRCLE 223 ON READER SERVICE CARD

223

·

MICO
DESK AND DOOR PLATE ENGRAVER
FOR Engraving most sizes of Desk and Door Plates in a single setup.

electronics

Audit Bureau Of Circulat ions

Associated pus:floss Publications

Audited Paid Circulation

FEATURES
I. Six Pantograph ratios--from 1.5:1 to 4:1. 2. .S2p5i0n"d.le has integral micrometer depth control of 3. Uses standard tapered-shank engraving cutters. 4. New It" Copy carriers hold 17" of master copy:
oPneermistest-uepngartavtihneg 1a.b5o:u1 t raItIi"o. line of characters in 5. tTihorneeed ssiezpeasraotfelyc.opy carriers available. Each posi6. tWiomrek-holding fence speeds set-up and engraving
Send for illustrated Catalog
MICO INSTRUMENT CO.

77 Trowbridge St.

Cambridge 38, Mass.

CIRCLE 266 ON READER SERVICE CARD

e Direct Reading in Degrees.
·Accuracy 0.05'or 1%.

JAMES T. HAUPTLI
Advertising Sales Manager

R. S. QUIN1: Assistant Publisher Buyers' Guide and Business Manager
FRED STEWART, Promotion Manager
B. ANELLO: Market Services Manager

RICHARD J. TOMLINSON: Production Manager
GEORGE E. POMEROY: Classified Manager
HUGH J. QUINN:
Circulation Manager

ADVERTISING REPRESENTATIVES

NEW YORK (36): Donald H. Miller, Henry M. Shaw, George F. Werner 500 Fifth Avenue, OXford 5-5959
BOSTON (16): William S. Hodgkinson, Donald R. Furth McGraw-Hill Building, Copley Square, Congress 2-1160
PHILADELPHIA (3): Warren H. Gardner, William J. Boyle 6 Penn Center Plaza, LOcust 8-4330
CHICAGO (11): Harvey W. Wernecke, Robert M. Denmead 645 North Michigan Avenue, Mohawk 4-5800
CLEVELAND (13): Paul T. Fegley 55 Public Square, Superior 1-7000
SAN FRANCISCO (11): R. C. Alcorn 255 California Street, Douglas 2-4600
LOS ANGELES (17): Peter S. Carberry, Ashley P. Hartman 1125 W. 6th St., Huntley 2-5450

DENVER (2):
J. W. Patten Tower Bldg., 1700 Alpine 5-2981 ATLANTA (9):

Broadway,

Michael H. Miller, Robert C. Johnson
1375 Peachtree St. N.E., Trinity 5-0523 HOUSTON (25):
Joseph C. Page, Jr.

Prudential Bldg., Holcomb Blvd., Jackson 6-1281 DALLAS (1): Frank Le Beau
The Vaughn Bldg., 1712 Commerce St. Riverside 7-9721

LONDON Wl:
Dennis McDonald
34 Dover St. FRANKFURT/Main:
Stanley R. Kimes
85 Westendstrasse GENEVA:
Michael R. Zeynel 2 Place du Port

Type 405 Series: 1 cps to 500 kc. Accuracy 0.25 0 relative, lo absolute. No amplitude adjustment from 0.1v to 70v. Suitable for plotting phase curve.
Type 202: 20 cps to 500 mc. Accuracy 0.02 0 or 2%. 10 full scale sensitivity. Phase range 0-1, 0-2, 0-12, 0-120, and 0-180 degrees.
Type 205A1-A2: 100 kc to 15 mc. Accuracy 0.05 0 or 1%. Sensitivity 0.04v.
Type 20581-B2-B3: 15 mc to 1500 mc. Accuracy 0.05 0 or 1%. Sensitivity 10 millivolts or better with receiver.
AD -
ELECTRONICS [AB., IN

"Headquarters for Business Information"

McGraw-Hill
American Machinist Metalworking Manufacturing
Aviation Week and Space Technology
Business Week Chemical Engineering Chemical Week Coal Age Construction Methods and
Equipment Construction Daily Control Engineering Electrical Construction
and Maintenance Electrical Merchandising Week Electrical Newsletter Electrical West

Technical and Business
Electrical Wholesaling Electrical World Electronics Engineering Digest Engineering and Mining Journal E& Mi Metal and Mineral
Markets Engineering News-Record Factory Fleet Owner Industrial Distribution National Petroleum News Nucleonics Nucleonics Week Platt's Oilgram News Platt's Oilgram Price Service Power

Publications
Product Engineering Purchasing Week Science Week Textile World
Overseas only: Automobile International
(English, Spanish) Ingenieria Internacional
Construccion (Spanish) International Management
(English, Spanish Portuguese editions) Metalworking Production (Great Britain)

249 TERHUNE AVE, PASSAIC. NJ.
See Booth 3609 at the IRE Show

Available by subscription only -- to qualified persons actively engaged in the field of the publi-
cation. For subscription rates and information describing the editorial coverage of any of the above publications, write to: Subscription Manager, Circulation Department, McGraw-Hill Publishing Company, 330 West 42nd Street, New York 36, N. Y.

226

CIRCLE 226 ON READER SERVICE CARD

electronics

got a mixer-preamp problem?
Whatever your problem in the application of microwave receiving equipment LEL can answer it with off-the-shelf hardware of practical up-to-the-minute engineering design--and performance that's just plain hard to beat.
One of more than 800 stock pixer-preamplifiers, the SAC-6 (illustrated) offers a combination of low noise, low power requirements, low weight and small size coupled with extreme reliability and ruggedness.

Series SAC-6

SPECIFICATIONS

Frequency Range

1.7-2.4Gc

Gain

20db (min)

Noise Figure

10.5db (typ.)

Power IF

--I 20V @ 8ma --20V 8ma
30, 60 or 70mcs

IF (3db Bandpass) 12 or 20 db

See us at Booths 2106-2108 IRE Show

Filtron Co., /tic Fluke Mfg. Co., Inc., John Franklin Electronics, Inc

NOW 195 95 SS

Clardner-Denver Company

169, 169

Garlock Electronics Products

74

General Dynamics Electronics

139

General Electric Co. Power Tube Dept

117

General Electronic Laboratories, Inc

93

General Instr lllll ent Corp.

sernir

'actor Division

50

Graphie Systems, Inc Gray Instrument Co

112 142

Greater San Jese Chamber of Commerce
Guriebrod Bros. Silk ('o., Inc

197 38

Harman Kardon Inc

· Ilart Manufacturing Co

1116

Hathaway Instruments, Inc · linydon Co., A. W

171

Hominway & Bartlett Mfg. Co

140

· Ilewlett-Packard ('

1111Ily'
Inside Eront Cover

ITexacon Electric Co

· Dill Elect

· s. Inc

161

· Hitachi. Ltd.

Holt Instrument Laboratories
Hughes Aircraft Co. Space Systems Division
· Hunt Company, Phillip A

103
141 138

imtra Corp. Indiana General Corp

121 28

Industrial Test Equipment Co

190

irstic of

Eligincers..134, 139, 192

· Itek Electro -Products ('o

151

· hit erelect nun is Corp.

121

lot ernationztl Electronic Industries. Div. of Standard Pressed Steel

119

· .1 F D Electronics Corp

143

· 31

Radio Manufacturing Corp.. 160

Jerrold Electronics Corp

11

· Kay Electric Co

115

Keithley Instruments, Inc

174

Kinney Vacuunt Div. of New York Air

Brake CO.

163

· Kit,I el. A Division of Cohn Electronics

Ine.

3rd («over

· 14.3oritsu Electrical Instruments

Works, Ltd.

121

Afamily of Precise Thermistors
YSI produces a family of precise thermistors which match standard Resistance-temperature curves within ± 1%. tos
4
2
8 6o
4 z

4

2

10'
0

TEMPERATURE IN `C

20

40

60

80

100

Resistance Temperature Characteristics -- Partial Range--YSI '4'44006 Thermistors (10K),

You can now use stock YSI thermistors interchangeably as components in any temperature transducer or compensator circuit without individual padding or balancing.
DATA

B1(1)( ti resistances at 25° C. of:

300 S.1

31KK

3100 KK

100 K

· Each family follows the same RT curve within 1% accuracy from - 40° to 150 ° C.
e Cost under $5.00 each, with sub-
stantial discounts on quantity orders. · Quantities under 100 available from
stock at YSI now. e YSI can produce precise thermistors
with different base resistances and beta's where design requirements and quantities warrant.

For complete specifications and details write:

Akron Street, Copiague, L.I., N.Y. AMityville 4-2200
CIRCLE 264 ON READER SERVICE CARD
March 9, 1962

· See advertisement in the July 20, 1961 issue
of Electronics Buyers' Guide for complete line of products or services.

YELLOW SPRINGS INSTRUMENT CO., INC. Yellow Springs, Ohio

CIRCLE 223 ON READER SERVICE CARD

223

fine tubing in columbium and
tantalum
You can now get fine, seamless tubing in columbium and tantalum from UNIFORM TUBES and profit from UNIFORM'S standard policies of (1) top quality, (2) close tolerances, (3) fast delivery and (4) low prices. Drawn to your specifications with tolerances of ± 0.0005" or better, columbium and tantalum tubing is available with any specified O.D. from 0.010" to 0.500". Wall thicknesses range from 0.065" to 0.001" with equally close tolerances.
Although drawn specially to your order, columbium and tantalum tubing will normally be shipped within 2to 3weeks.
This tubing is offered in random straight lengths to 20' or cut to specific lengths, free of burrs. For subsequent ease of fabrication, tube lengths are fully annealed in vacuum furnaces. If you prefer, UNIFORM will fabricate columbium and tantalum tubular parts for you with the same skills and care that enable us to draw the original tubing to such close tolerances. Besides placing full responsibility with one supplier, you get the advantages of UNIFORM'S low prices when tubular parts are fabricated "at the mill."
If you use or specify columbium or tantalum for their high-temperature strengths, corrosion resistances to hot acids, molten metals and metallic salts, or for their other outstanding properties, then write today for details on fine seamless tubing and fabricated parts of these rare metals.
At the IRE Show, visit Booth 4039

· LEL, Inc.

223

Leach Corporation

24

· Leach and Garner Co

132

· Lepel High Frequency Laboratories,

Inc.

184

Lockheed-Georgia Co.

120

Lockheed California Co

136

Lockheed Missiles & Space Co

112

Mabuchi Shoji K. K

116

· Magnetic Shield Division of Perfection

Mica Co.

150

Magnetleo Inc.

134

· Malayan Tin Bureau

134

· Marconi Instruments

172

· Markel & Sons. L. Frank

164

· Massa, e% Div. of Cohn Electronics, Inc. 129

· McCoy Electronics Co

92

McGraw-Hill Book Co

16

Mechanical Enterprises, Inc

100

Metronix, Inc.

186

· Mico Instrument Co

226

Minnesota Mining & Mfg. Co. Chemical Div.

106, 107

Mitre Corp., The
· Mitsuml Electric Co., Ltd

181
176

Motorola Semiconductor Products Inc 189

· My ealex Corp. of America

96

NRC Equipment Co · New Hermes Engraving Machine
Corp. New Jersey Bureau of Commerce · Non-Linear Systems, Inc · Northeastern Engineering, Inc
· Northern Radio Co.. Inc

111
180 110 94. 95
86 142

· Reeves Hoffnann, Div. of Dynamics Corp. of America.. 116

Reeves Instrument Co

69

Rochar Electronique

187

· Sanborn Company

97

Schjeldahl Co., G. T

47

Security Devices Laboratory Electronics Div. of Sargent & Greenleaf, Inc.
Servomechanisms Inc.

4 191, 225

Showa Musen Hogyo Co., Ltd

110

· Sierra Electronic Corp · Sigma Instruments, Inc

128

· Sorensen & Co.

149

· Southern Electronics Corp

196

Space Technology Laboratories, Inc

15

Sprague Electric Co

9, 36

· Standard Electric Time Co., The

165

Standard Telephones and Cables Ltd

43

Stanford University

102

· Stevens-Arnold, Inc.

157

Struthers-Dunn

143

Sumitomo Electric Industries, Ltd

200

Sunair Electronics, Inc

98

Synthane Corp.

116

Taylor Fibre Co Tektronix, Inc. Texas Instruments Incorporated Apparatus Division Textran Corp. Thomas Flexible Coupling Co Trak Electronics Co.. Inc · Transitron Electronic Corp Trion Instruments Inc · Tung-Sol Elertrie. Inc

146, 147 26
164 200 203 125
87 100 10, 11

· Ohmite Mfg.

40, 41

· Packard Dell Electronics... 17, 18, 19, 20

Paktron, Div. of Illinois Tool Works

Inc.

162

Pan American World Airways

202

· Perfection Mica Co. Magnetic Shield Div
Philamon Laboratories Inc

150 35

· Mile() Corporation

130 131

· Polarad Electronics Corporation ....29. 30

Potter and Brumfield,

Div. of American Machine & Foundry

Co.

59

· Premier Metal Products CO

190

Uniform Tubes. Inc Unger Electric Tools United Shoe Machinery Corp Unitek/Weldmatic Division
·Universal Relay Corp
· Utica Drop Forge let Tool Division, Kelsey-Hayes Co
· Vitro Electronics
· Ward Leonard Electric Co Wayne-George Corp. Westinghouse Electric Corp. Semiconductor Dept. Wilson Rubber Co., The Wood Electric Corp

224 81
22' 183 134 148
177
154 155 44. 45
91 178

UNIFORM TUBES,
INC. COLLEGEVILLE 2, PA.
HUxley 9-7276 TWX-CGVL 1044

Radiation Inc. · Radio Corporation of
America Radio Materials Co · Rayt bean Company

224

CIRCLE 224 ON READER SERVICE CARD

46 87, 4th Cover
7' 123

Yellow Springs Instrument Co., Inc.... 223
· See advertisement in the July 20, 1961 issue of Electronics Buyers' Guide for complete line of products or services.
electronics

NEW

MANUFACTURERS REPRESENTATIVES

Kenneth E. Hughes Co., Inc

208

vz SQUARE METAL FILM

CLASSIFIED ADVERTISING F. J. Eberle, Business Mgr.

EMPLOYMENT OPPORTUNITIES .207-217

EQUIPMENT (Used or Surplus New) For Sale

218-221

TRIMMER POTENTIOMETER

INDEX TO CLASSIFIED ADVERTISERS Atomic Personnel Inc

· Barry Electronics Beckman Instrument Inc Binswanger Corporation, Southern Div Brenton Employment Agency

219 212 220 208

· Capitol c

Mies Co., Inc

220

· C municatMns Equipment Company. 218

Cowin Associates

207

Daystrom Inc.

220

ENGI NEERED FOR: Low Cost Infinite Resolution Low Temperature Coefficient High Temperature Performance Conformance to Mil-R-22097 A SEE THEM AT BOOTH 2315 I.R.E.SHOW
CALL OR WRITE FOR DETAILS
.SA4//
SERVOMECHANISMS/INC.
MECHATROL DIVISION
NEW YORK-Home Office 1200 Prospect Avenue Westbury, New York Area Code 516- EDgewood 3-6000 TWX WBRY 359
CALIFORNIA - Branch Office- Mechatrol of Calif. 200 North Aviation Boulevard El Segundo, California Area Code 213 -0Regon 8-7841 TWX HAWCAL 4262

Electric Trading Company Electro -Mechanical · Engineering Associates Erie Electronics, Div. of
Erie Resistor Corp Esquire Personnel Service Inc

219 210 218
213 20$

General Communication Company General Dynamics/Electronics

207 210

Hollnberger-Burchell Associates Boucle Supply Co

208 218

KoHaman Instrument Corporation

217

Liberty Electronics Co

'21

Mallory & Co., Inc., R. P Master Electronics McDonnell Aircraft Microwave Service International. Inc · Mo,uunot,tli Radio Labs Motorola Inc., Military Electronics
Div., Western Center

208 218 211 208 220
211;

National Cash Register Co

215

· Page Electronics

218. 219

Phi'co Western Development Lab:209

Personnel Engineering

213

· Radio Research Instrument Co "It it" Johnson Electronics Reeves Instrument Corp Sangamo Electric Company
Scope Professional Placement Center Speidel Corporation, Industrial Div Sperry Gyroscope Co.,
Div. of Sperry Rand Corp Sperry Microwave Electronics Co.,
Div. of Sperry Rand Corp Sylvania Mountain View Operations

219 220 214 207 208 214
212
217 213

· TAB Union Switch & Signal, Div. of %VATIC°
· Universal Relay Corp
· We,tern Engineers · 91 ilgrcen industries Inc

220
211$
219 221 220

· See advertisement in the July 20, 1961 issue of Electronics Buyers' Guide for complete line of products or services.

This index and our Reader Service Numbers are published as a service. Every precaution is taken to make them accurate, but ELECTRONICS assumes no respon-
sibilities for errors or omissions.

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:··· SEE HARMAN-KARDON LOGIC MODULES AND FLEXI-CARD AT THE IRE SHOW, BOOTH 3837.

March 9, 1962

CIRCLE 225 ON READER SERVICE CARD

225

MICO
DESK AND DOOR PLATE ENGRAVER
FOR Engraving most sizes of Desk and Door Plates in a single setup.

electronics

0

ABC

:18P

COLO '

Audit Bureau of Circulations

Associated Business Publications

Audited Paid Circulation

FEATURES I. Six Pantograph ratios--from 1.5:1 to 4:1. 2. Spindle has integral micrometer depth control of
.250". 3. Uses standard tapered-shank engraving cutters. 4. New 19" Copy carriers hold 17" of master copy:
Permits engraving about II" line of characters in one set-up at the 1.5:1 ratio. 5. Three sizes of copy carriers available. Each positioned separately. 6. Work-holding fence speeds set-up and engraving time.
Send for illustrated Catalog
MICO INSTRUMENT CO.

77 Trowbridge St.

Cambridge 38, Mass.

CIRCLE 266 ON READER SERVICE CARD

PRECISION

· Direct Reading in Degrees.
· Accuracy 0.05'or 1%.

JAMES T. HAUPTLI
Advertising Sales Manager

R. S. QUIN1: Assistant Publisher Buyers' Guide and Business Manager
FRED STEWART: Promotion Manager
B. ANELLO: Market Services Manager

RICHARD J. TOMLINSON: Production Manager
GEORGE E. POMEROY: Classified Manager
HUGH J. QUINN: Circulation Manager

ADVERTISING REPRESENTATIVES

NEW YORK (36): Donald H. Miller, Henry M. Shaw, George F. Werner 500 Fifth Avenue, OXford 5-5959
BOSTON (16): William S. Hodgkinson, Donald R. Furth McGraw-Hill Building, Copley Square, Congress 2-1160
PHILADELPHIA (3): Warren H. Gardner, William J. Boyle 6 Penn Center Plaza, LOcust 8-4330
CHICAGO (11): Harvey W. Wernecke, Robert M. Denmead 645 North Michigan Avenue, Mohawk 4-5800
CLEVELAND (13): Paul T. Fegley 55 Public Square, Superior 1-7000
SAN FRANCISCO (11): R. C. Alcorn 255 California Street, Douglas 2-4600
LOS ANGELES (17): Peter S. Carberry, Ashley P. Hartman 1125 W. 6th St., Huntley 2-5450

DENVER (2): J. W. Patten Tower Bldg., 1700 Broadway, Alpine 5-2981
ATLANTA (9): Michael H. Miller, Robert C. Johnson 1375 Peachtree St. N.E., Trinity 5-0523
HOUSTON (25): Joseph C. Page, Jr. Prudential Bldg., Holcomb Blvd., Jackson 6-1281
DALLAS (1): Frank Le Beau The Vaughn Bldg., 1712 Commerce St.
Riverside 7-9721
LONDON Wl: Dennis McDonald 34 Dover St.
FRANKFURT/Main: Stanley R. Kimes 85 Westendstrasse
GENEVA: Michael R. Zeynel 2 Place du Port

Type 405 Series: 1 cps to

500 kc. Accuracy 0.25 0 rel-

ative, 1° absolute. No am-

plitude adjustment from 0.1v

H

to 70v. Suitable for plotting phase curve.

Type 202: 20 cps to 500

AM

mc. Accuracy 0.02 0 or 2%. 10 full scale sensitivity.
Phase range 0-1, 0-2, 0-4,

SE

0-12, 0-120, and 0480 degrees.
Type 205A1-A2: 100 kc to

ET

15 mc. Accuracy 0.05 0 or 1%. Sensitivity 0.04v.

Type 205131-B2-B3: 15 mc

E to 1500 mc. Accuracy 0.05 0 or 1%. Sensitivity 10 millivolts or better with re-

celver.

AD -YU
S ELECTRONICS LAB., INC. 249 TERHUNE ME PASSAIC. N. J.

See Booth 3609 at the IRE Show

"Headquarters for Business Information"

McGraw-Hill Technical and Business Publications

American Machinist Metalworking Manufacturing
Aviation Week and Space Technology
Business Week Chemical Engineering Chemical Week Coal Age Construction Methods and
Equipment Construction Daily Control Engineering Electrical Construction
and Maintenance Electrical Merchandising Week Electrical Newsletter Electrical West

Electrical Wholesaling Electrical World Electronics Engineering Digest Engineering and Mining Journal E8. MJ Metal and Mineral
Markets Engineering News-Record Factory Fleet Owner Industrial Distribution National Petroleum News Nucleonics Nucleonics Week Platt's Oilgram News Platt's Oilgram Price Service Power

Product Engineering Purchasing Week Science Week Textile World
Overseas only: Automobile International
(English, Spanish) Ingenieria Internacional
Construccion (Spanish\ International Management
(English, Spanish Portuguese editions) Metalworking Production (Great Britain)

Available by subscription only -- to qualified persons actively engaged in the field of the publication. For subscription rates and information describing the editorial coverage of any of the above publications, write to: Subscription Manager, Circulation Department, McGraw-Hill Pub-
lishing Company, 330 West 42nd Street, New York 36, N. Y.

226

CIRCLE 226 ON READER SERVICE CARD

electronics

NEW AC DC DIGITAL
VOLTMETER

RATIOMETER!

INPUT

O iGtTAL-

VOLTME TE REFIENCE

RAT I0 METER · s·
1.1111. 0,-P

É,

FIRST TO BRING YOU 5 READINGS-PER-SECOND SPEED WITH MERCURY-WETTED RELAYS!

If you want accuracy and speed in a voltrneter/ratiometer, KIN TEL'S Model 551 is for you. It has more than just sufficient speed for most data logging and bench applications. In fact, it is the fastest, most accurate unit on the market with mercury-wetted relays and all-solid-state construction.
ACCURATE. DC measurements between 0.0000 and ±999.99 volts are accurate to within 0.01% of the reading ±1digit. AC measurements from 30 to 10,000 cps between 0.0000 and 999.99 volts are accurate to within 0.1% of the reading or 0.05% of full scale, whichever is greater. Ratio measurements between ± .00001 and ±99.999 are accurate to within 0.005% of the reading ±1digit. All measurement circuits are fully isolated from the case, power line, and output devices. This
Visit booth 3605 at the IRE Show, March 26-29.

exceptional accuracy makes the 551 ideal for laboratory use.
ADAPTABLE WITHOUT MODIFICATION to fit in a variety of digital data-logging systems. Printer output driver circuits provide electrical signals or contact closure in either binarycoded decimal or 10-line parallel form for virtually any type of digital recorder. For complete technical information, or ademonstration without obligation, write direct. Price (without optional visual readout) for the basic 5-digit instrument with buffer register and auto/manual/command range: $4150. F.O.B. San Diego. (50-cps operation at additional cost. Accessories include projection readout, BCD mercury-relay output, 10-line mercuryrelay output, and AC converter.)
Representatives in all major cities.

5725 Kearny Villa Road, San Diego 12, California · Phone 277-6700 (Area Code 714 )

OEL-ECTImt·=1,41GM, 11,4C
KAN; -rOEu_ 1=.1·/15101,4

Unretouched photograph of a typical picture-tube screen showing image detected by an RCA Image Intensifier Orthi-
con. Note the fully-dilated pupil--adjusted to deep stprImess.

to the threshold of absolute darkness

RCA Image Orthicon Developmental Type C74036

RCA Image Intensifier Orthicon Developmental Type C74036, designed and constructed under aU. S. Army contract, extends the pick-up capability of television systems far beyond that of the human eye.

Combining features of the famous
RCA Image Orthicon design with the outstanding advantages of the RCA Image Intensifier, this television camera tube brings man to the threshold of seeing in the dark. It provides up to 100 TV lines resolution. The C74036 has the highly sensitive S-20 spectral response and good gray scale rendition to produce true tonal gradations on the screen of the typical picture tube. Contributing to the high sensitivity of this tube are a

multi-alkali photo-cathode and a high-gain thin-film target.
The RCA C74036 is already serving in widely diversified fields. In astronomical application, for example, it has been used in the 20 inch telescope on Mt. Palomar to obtain athreshold detection of a15th magnitude star--at 1/30th second storage time. In biological application at Western Reserve
Medical College, it is used in the study of the living cell. In nuclear
particle detection, it is used by

Edge --) The Most Trusted Name in Electronics

(rb

VISIT THE RCA EXHIBIT AT THE IRE SHOW

leading university laboratories for scintillation counting work.
The capabilities of the RCA Image Intensifier Orthicon open immense opportunity in low lightlevel,TV camera applications. Get technical details on the C74036 from: Marketing Manager, RCA Industrial Tube Products, Lancaster, Pa.
INDUSTRIAL TUBE PRODUCTS FIELD OFFICES
OEM SALES: Newark 2, N. J., 744 Broad St., HU 5-3900 ·Chicago 54, III., Suite 1154, Merchandise Mart Plaza, WH 4-2900 ·Los Angeles 22, Calif., 6801 E. Washington Blvd., RA 3-8161 Burlingame, Calif., 1838 El Camino Real, OX 7-1620 · GOVERNMENT LIAISON: Harrison, N. J., 415 South Fifth St., HU 5-3900 ·Dayton 2, Ohio, 224 N. Wilkinson St., DA 6-2366 Washington 7, D.C., 1725"K' 'St.,,N.W. FE 7-8500


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