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Transistor Projects for the Constructor from the 1960's and 70's.



All articles are © Practical Wireless Magazine and are reproduced by kind permission of the editor.





This series started in the 1960's Practical Wireless magazine and continued for many years.
That idea was that the circuit used no more than 20 components or cost more than 20/- (an old pound ()). These are various transistor projects which featured in the series.
With thanks to Steve Payne who sent me these circuits.




Index. On this page are:=

9 volt Supply
Audio Amplifier
Basic Wobulator
Capacitance Bridge
Electronic Timer
Frost Alarm
Gunshot Simulator
High Resistance Voltmeter Attachment
Hunt the Bleeper
IC Photo Trigger
Interstage Transistor Transformers
LED Flasher
LF Signal Generator
Lie Detector
Light Controlled Oscillator




Index. On the next page are:=

Magic Candle
Metronome
Morse Code Oscillator
Motor Speed Controller
Neon Flasher
Noise Limiter
Pulse Generator
Signal Injector
Slave Flash Trigger
SNAP
Swanee Whistle
Touch Sensative Switch
Touch Switch
Traficator Repeater
Transistor Audio Amplifier
Variable Ratio Counter
Varicap BFO
WAA WAA
Transformer Ratio Analyser


9 volt Supply

9 volt Supply

Audio Amplifier

Audio Amplifier

Basic Wobulator

Basic Wobulator. Page 1 Basic Wobulator. Page 2

Capacitance Bridge

Capacitance Bridge

Electronic Timer

Electronic Timer

Frost Alarm

Frost Alarm. Page 1 Frost Alarm. Page 2

Gunshot Simulator

Gunshot Simulator. Page  1 Gunshot Simulator. Page  2

High Resistance Voltmeter Attachment

High Resistance VM Attachment

Hunt the Bleeper

Hunt the Bleeper

IC Photo Trigger

IC Photo Trigger

Interstage Transistor Transformers

Interstage Transistor Transformers. Page 1 Interstage Transistor Transformers. Page 2

LED Flasher

LED Flasher

LF Signal Generator

LF Signal Generator

Lie Detector

Lie Detector

Light Controlled Oscillator

Light Controlled Oscillator





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Last updated 4.5.2006
2003-2006 © Maurice Woodhead