Detailed entries for one subject from the INDEX TO HOW TO DO IT INFORMATION.
Click on a see also (sa) or tracing (xx) to view detailed entries about a related subject.
The entries are in alphabetical order by magazine name and then in chronological sequence.
To obtain a copy of any magazine article contact your local public library or the publisher.

The F/C meter. Measure frequency (1 Hz to 100 kHz) and capacitance (5 picofarad to 1 microfarad) over five ranges. Can also provide a frequency standard or be used as an oscilloscope calibrator, squarewave signal injector, a marker for audio-sweep generators, and a non-contact tachometer. Est. cost: $25 (kit).
ELECTRONICS HOBBYISTS HANDBOOK 1990 pg. 129

Probe-size signal injector. A small, 7-component signal generator with 600 cps to 30 mc signal output in a plastic toothbrush case.
ELECTRONICS ILLUSTRATED Nov 1966 (v.9#6) pg. 55

Pocket-size signal injector ("Beeper") is a simple blocking oscillator with an output above 1 KHz. Powered by a small mercury cell. Est. cost: $6.
ELEMENTARY ELECTRONICS Jul-Aug 1971 (v.11#3) pg. 45

Audio generator (injector) circuit produces a sinusoidal output of 0-to-8 volts peak-to-peak at about 500 Hz.
HANDS-ON ELECTRONICS Sep 1987 (v.4#9) pg. 97

Signal injector circuit can put out signals from about 2 kHz up to the RF broadcast band range. Output levels can vary from a few millivolts up to eight volts peak-to-peak.
HANDS-ON ELECTRONICS Feb 1988 (v.5#2) pg. 84

Signal injector circuit built around the 555 timer IC. Output frequency can be varied from 50 Hz to 15 kHz.
HANDS-ON ELECTRONICS Dec 1988 (v.5#12) pg. 26

Circuit for a signal injector for putting an i-f or rf signal into a circuit at any point you choose.
MODERN ELECTRONICS [1] Feb 1978 (v.1#1) pg. 73

Signal injector circuit for testing both audio amplifiers and radio circuits.
POPULAR ELECTRONICS [1] Nov 1964 (v.21#5) pg. 88

Schematic of a general purpose signal injector circuit using two transistors.
POPULAR ELECTRONICS [1] Dec 1965 (v.23#6) pg. 76

Signal injector. Quick way to check audio circuits. Basically, it's a 1000 Hz multivibrator that generates square waves. Est. cost: $8.
POPULAR ELECTRONICS [1] Jun 1970 (v.32#6) pg. 43
Correction POPULAR ELECTRONICS [1] Sep 1970 (v.33#3) pg. 116

Signal injector is comprised of a simple oscillator circuit with 100% negative feedback. Ideal aid for tracing radio circuits.
POPULAR ELECTRONICS [2] Mar 1989 (v.6#3) pg. 23

Injecto-Trace combines a signal injector and a signal tracer into a single circuit. Works from audio frequencies up to 400 MHz.
POPULAR ELECTRONICS [2] Oct 1989 (v.6#10) pg. 23

Three-in-one test set combines a signal injector, logic probe, and an audio signal tracer.
POPULAR ELECTRONICS [2] Oct 1989 (v.6#10) pg. 104

Signal injector circuit produces a basic 600-Hz pulse-type output with harmonics up to 30-MHz for troubleshooting RF stages.
POPULAR ELECTRONICS [2] Sep 1997 (v.14#9) pg. 75

Experimenting with the 4093 NAND Schmitt trigger. Circuits include oscillator, signal injector, fluorescent-light inverter, fluorescent flasher, Morse code sender, beep-tone generator, LED flasher, and timer.
POPULAR ELECTRONICS [2] Feb 1998 (v.15#2) pg. 50

Signal-injector probe. A 1,000 kilocycle multivibrator is contained in a plastic pill container.
POPULAR MECHANICS Oct 1967 (v.128#4) pg. 196

Self-contained solid-state signal injector is built from a Keystone type 1810 test probe kit plus some other parts. Fundamental frequency is between 1 and 2 KHz. Est. cost: $2 (for kit).
RADIO-TV EXPERIMENTER Feb-Mar 1968 (v.24#1) pg. 91

Copyright © by Norman Lathrop Enterprises. All Rights Reserved. No part of this publication may be reproduced, stored in a retrieval system or transmitted, in any form or by any means (electronic, mechanical, print photocopying, recording or otherwise) without the prior expressed permission of Norman Lathrop Enterprises, except as permitted by law.