Norman Lathrop Enterprises | Norman Lathrop Enterprises
Index To How To Do It Information
Lathrop Report On Newspaper Indexes
A profile of Norman Lathrop Enterprises
Last Updated
  Index Home  |   A-Z Subject Heading Guide    |   Keyword Search  |   Union List 

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.


Using CMOS type circuits to create pulse generator, bounceless mechanical switch interface, and an inverter.
CQ. THE RADIO AMATEUR'S JOURNAL Apr 1981 (v.37#4) pg. 52

Minute Marker, a simple device that uses low-voltage 60-hertz AC for synchronization. Generates variable-duration output pulses (with selectable polarity) and a wide range of time intervals (from 0.1 seconds to 1 minute).

Wave shaping. Learn the basics of waveform generation and shaping with bipolar transistor circuits that you can build. Includes circuits for multivibrators, schmitt trigger, pulse generator, etc.
ELECTRONICS NOW Jan 1994 (v.65#1) pg. 70

Minute Marker can generate variable-duration output pulses with selectable polarity and a wide range of time intervals.
ELECTRONICS NOW Sep 1994 (v.65#9) pg. 73

Circuit for a pulse generator uses a pair of 555 timer ICs to give pulses with adjustable duty cycle from 0.1 to 99.9%.
ELECTRONICS NOW Jun 1995 (v.66#6) pg. 8
Added Info ELECTRONICS NOW Sep 1995 (v.66#9) pg. 14

Build a portable pulse generator. Supplies 5-volt pulses that can range from 1 microsecond to 100 milliseconds. The repetition rate is adjustable between 10 microseconds and 1 second. Powered by a 9-volt battery.
ELECTRONICS NOW Jul 1998 (v.69#7) pg. 40
Correction ELECTRONICS NOW Sep 1998 (v.69#9) pg. 12

A microcontroller-based precision pulse generator. Build a bench top unit with crystal-controlled timing and a PIC microcontroller. Produces both normal and inverted TTL-level outputs. Rise and fall times are less than 10 nanoseconds. Pulse period from 5 microseconds to 9.9 seconds. Pulse length from 0.1 microseconds to 990 milliseconds.
ELECTRONICS NOW Dec 1998 (v.69#12) pg. 31
Added Info ELECTRONICS NOW Feb 1999 (v.70#2) pg. 22
Correction ELECTRONICS NOW Aug 1999 (v.70#8) pg. 8

Low-rate pulse generator circuit uses no electrolytic capacitor. Rate is one cycle every 4 seconds.
ELECTRONICS WORLD Mar 1969 (v.81#3) pg. 67

Pulse generator produces positive going pulses of spike waveform, with a repetition rate continuously variable from 2 to 25,000 pulses per second.
ELECTRONICS WORLD Jan 1970 (v.83#1) pg. 78

Experimenting with an electrolytic interrupter by using a liquid pulse generator. Such devices were forerunners of vacuum tubes.
ELEMENTARY ELECTRONICS Mar-Apr 1971 (v.11#1) pg. 47

Pulstar, a universal digital clocking source (pulse generator) which will provide frequencies from 1 Hz to 1 MHz, and has a pulse-width variable between 0.5 seconds and 0.5 microseconds. Has 3 modes of operation (free running, gated oscillator, and single shot) with external or internal triggering. Est. cost: $65.
ELEMENTARY ELECTRONICS Sep-Oct 1979 (v.19#5) pg. 70

The ClockBox. A low-cost, precision, crystal-controlled clock generator with 12 switch-selectable output frequencies and one dedicated output frequency. Six more frequencies can be added. Covers from 1 Hz to 1 MHz. Est. cost: $15.
HANDS-ON ELECTRONICS Jul-Aug 1986 (v.3#4) pg. 57

Low-frequency, dual-pulse generator. Offers digital-circuit experimenters a source of reliable clock pulses to 10kHz. Est. cost: $100.
MODERN ELECTRONICS [2] Jul 1985 (v.2#1) pg. 38

A multi-function oscillator circuit uses two transistors. Applications include a code-practice oscillator, lamp and LED flashers, audio oscillator, dc-to-dc upconverter, relay control, and pulse generator.
MODERN ELECTRONICS [2] Jul 1985 (v.2#1) pg. 62

High-frequency, dual-pulse generator. Easy-to-build project generates high-speed, square-wave pulses at frequencies up to 75 MHz. Est. cost: $50.
MODERN ELECTRONICS [2] Dec 1985 (v.2#6) pg. 50

Build the Pattern-8 generator. Up to eight data format patterns can be programmed into this instrument for quick, accurate digital equipment troubleshooting. Est. cost: $50.
MODERN ELECTRONICS [2] May 1987 (v.4#5) pg. 52

Varipulse generator. A wide-range pulse generator for use in digital electronic circuit testing and troubleshooting.
MODERN ELECTRONICS [2] Aug 1987 (v.4#8) pg. 52

Pulse circuits. What they are, how they work and where they are used in electronic equipment. Part 1.
MODERN ELECTRONICS [2] Feb 1989 (v.6#2) pg. 32

Pulse circuits. Part 2. How to generate pulses and waveforms using your own experimental circuits.
MODERN ELECTRONICS [2] Jul 1989 (v.6#7) pg. 32
Added Info MODERN ELECTRONICS [2] Nov 1989 (v.6#11) pg. 7

Four components in generator which transmits only one step pulse each time it is turned on.
POPULAR ELECTRONICS [1] Apr 1964 (v.20#4) pg. 44

Advanced experimenter project. Pulse generator. A variable amplitude and frequency trigger for counting, testing and experimenting. Est. cost: $15.
POPULAR ELECTRONICS [1] Apr 1966 (v.24#4) pg. 60

Positive or negative pulse generator serves as a trigger source for digital circuits.
POPULAR ELECTRONICS [1] Apr 1969 (v.30#4) pg. 34

Spike pulse generator uses a silicon-controlled switch and operates directly from the output terminals of a sine-wave audio signal generator. Range of 100 to 10,000 pulses per second.
POPULAR ELECTRONICS [1] Sep 1969 (v.31#3) pg. 78

Portable pulse generator with a frequency range of 10 Hz to 100 KHz, pulse width of 1 to 100 microseconds, and amplitude of 0 to 8 volts. Est. cost: $12.
POPULAR ELECTRONICS [1] Nov 1969 (v.31#5) pg. 61

Applications for the 555 integrated circuit timer chip described in the Nov 1973 issue (p.54). Applications include: (1) Warble alarm circuit, (2) Schmitt trigger or bistable buffer, (3) Square wave oscillator, (4) Output drive considerations, (5) Wide-range pulse generator.
POPULAR ELECTRONICS [1] Jan 1974 (v.5#1) pg. 72

A pair of circuits capable of delivering a repetitive series of different output voltage levels when triggered by a chain of pulse signals from a logic clock circuit or relaxation oscillator.
POPULAR ELECTRONICS [1] Nov 1975 (v.8#5) pg. 90

Building a TTL sequence generator can teach you about digital logic IC's and provide a circuit for use in signal generators, LED flashers, electronic music, and random on-off switches.
POPULAR ELECTRONICS [1] Feb 1976 (v.9#2) pg. 101

Circuit using standard TTL hex inverter can be used as a conventional clock, two-phase clock, or single-pulse generator for digital experiments.
POPULAR ELECTRONICS [1] Sep 1977 (v.12#3) pg. 92

A fully adjustable pulse generator (multivibrator circuit) built around two 558 quad timer chips.
POPULAR ELECTRONICS [1] Jul 1982 (v.20#7) pg. 90

Digital electronics course. 555 monostable multivibrator (oscillator/timer). Explore a device capable of generating clock pulses or time delays whose frequency or duration is determined by an external RC network, and is independent of the supply voltage.
POPULAR ELECTRONICS [2] Mar 1990 (v.7#3) pg. 75

Circuit produces several timed output pulses at disproportionate intervals. Uses a 555 timer IC.
POPULAR ELECTRONICS [2] Apr 1990 (v.7#4) pg. 22

CMOS square-wave/pulse generator circuit allows pulse rates from 100 Hz to 100 kHz and pulse widths from 1 ms to 1 us.
POPULAR ELECTRONICS [2] May 1990 (v.7#5) pg. 24

Digital electronics course. 555 oscillator circuits. Generating fixed-frequency pulses for use as timing signals in digital circuits.
POPULAR ELECTRONICS [2] May 1990 (v.7#5) pg. 76

Variable-frequency pulse generator circuit produces narrow 7-volt positive-going pulses and have a frequency range of 2 Hz to over 50 kHz.
POPULAR ELECTRONICS [2] May 1991 (v.8#5) pg. 74

How to use the popular 555 timer IC in practical monostable multivibrator circuits. (1) Fixed-period timer. (2) Relay drivers. (3) Pulse generator. (4) 1-kHz linear-scale analog frequency meter.
POPULAR ELECTRONICS [2] Mar 1993 (v.10#3) pg. 53

An electro-optical shaft encoder. How to turn the rotation of a mechanical shaft into a signal that can be used by digital circuits. Build a BCD (binary-coded-decimal) number generator that incorporates a shaft encoder, pulse generator and counting circuits.
POPULAR ELECTRONICS [2] Mar 1996 (v.13#3) pg. 61

Simple pulse generator circuit can provide several waveforms. A potentiometer sets the frequency.
POPULAR ELECTRONICS [2] Apr 1997 (v.14#4) pg. 57

Pulse generator circuits. (1) Variable-pulse circuit generates single-shot pulses in the manual mode with variable attack (rise) and decay (fall) rates up to 20 milliseconds. (2) Laboratory pulse generator produces perfectly symmetrical pulses with fast rise and fall times covering the range from 40 Hz to 40 kHz.
POPULAR ELECTRONICS [2] Oct 1997 (v.14#10) pg. 71, 72

Pulse-width generator can drive low-current devices. Use as an LED dimmer, motor-speed control, variable power supply, etc.
POPULAR ELECTRONICS [2] Mar 1998 (v.15#3) pg. 29

Square-wave and pulse-generator circuits. Used in digital circuits to supply clock pulses to counters, steppers, etc. Six circuits which use the CMOS line of ICs as the active device.
POPULAR ELECTRONICS [2] Dec 1998 (v.15#12) pg. 58

Selectable pulse-width generator circuit. Switches are used to set output pulse timing and pulse width.
POPULAR ELECTRONICS [2] Feb 1999 (v.16#2) pg. 55

Pulse generator circuit generates positive-output pulses at both the leading and trailing edges of an input gate.
POPULAR ELECTRONICS [2] Mar 1999 (v.16#3) pg. 53

Laboratory-type pulse generator circuit.
POPULAR ELECTRONICS [2] Mar 1999 (v.16#3) pg. 54

Low-cost pulse generator circuit features a pulse-repetition frequency from 1 Hz to 10 MHz, with pulse width variable from 50 nanoseconds to greater than 500 milliseconds. Output amplitude is 14-volts peak unloaded and about 7 volts into a 50-ohm load.
POPULAR ELECTRONICS [2] May 1999 (v.16#5) pg. 63

Synthesized pulse generator has a range from 1/100 Hz to 1.000 MHz. Use it for driving logic circuitry or with analog devices well into the HF range. Offers 9,999 possible frequencies with an accuracy of +/- 0.005%.
RADIO-ELECTRONICS Oct 1980 (v.51#10) pg. 87
Added Info RADIO-ELECTRONICS Feb 1981 (v.52#2) pg. 23

Universal logic tester checks resistors, capacitors, transistors, audio and AM radio circuits. Use as digital pulsar or troubleshooting instrument. Use to test digital logic and counting circuits. Estimated cost: $10.
RADIO-ELECTRONICS Dec 1980 (v.51#12) pg. 63

All about pulse generators. Part 1. How they work and how to use them in the service shop or experimenter's workshop.
RADIO-ELECTRONICS Mar 1982 (v.53#3) pg. 66

All about pulse generators. Part 2. How they are used in troubleshooting digital circuits.
RADIO-ELECTRONICS Jun 1982 (v.53#6) pg. 70

All about pulse generators. Part 3. How to avoid mismatches at any of the connections in a test setup.
RADIO-ELECTRONICS Jul 1982 (v.53#7) pg. 81

All about pulse generators. Part 4. Testing analog circuits.
RADIO-ELECTRONICS Sep 1982 (v.53#9) pg. 71

Versatile pulse generator. Full-featured pulse generator is easy to build. Invaluable for testing, troubleshooting and experimenting with digital equipment. Built entirely from CMOS circuits. Est. cost: $80.
RADIO-ELECTRONICS Nov 1985 (v.56#11) pg. 57, 78
Correction RADIO-ELECTRONICS Mar 1986 (v.57#3) pg. 20

Interface for your Commodore C64 computer converts it into a pulse generator capable of producing accurate squarewaves and pulses, plus a debounced one-shot trigger source.
RADIO-ELECTRONICS Oct 1987 (v.58#10) pg. 96

60-Hz timebase. Motorola's MC14566B CMOS IC timebase generator that is both accurate and flexible. Operation and typical circuits viewed.
RADIO-ELECTRONICS Jan 1988 (v.59#1) pg. 56

Working with monostable multivibrators. Learn how to design and build pulse generators and monostable multivibrators and how to use them in your projects.
RADIO-ELECTRONICS Apr 1988 (v.59#4) pg. 65

Programmable crystal-controlled pulse generator (calibrated frequency source) incorporates a programmable crystal oscillator IC.
RADIO-ELECTRONICS Jun 1990 (v.61#6) pg. 47, 69

Pulse-mate. This single-shot and continuous-pulse generator offers automatic level setting and both positive and negative pulses. Powered from the device under test (4.5 to 18 volts DC) and has short-circuit protection. Est. cost: $25 (kit).
RADIO-ELECTRONICS May 1991 (v.62#5) pg. 41

An audio pulse generator useful for speaker design and testing and for sound reinforcement.
SPEAKER BUILDER 2/1983 [Aug 1983] (v.4#2) pg. 14