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Transistor Projects for the Constructor from the 1960's and 70's. Page 2



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.


Magic Candle

Magic Candle

Metronome

Metronome

Morse Code Oscillator

Morse Code Oscillator

Motor Speed Controller

Motor Speed Controller. Page 1 Motor Speed Controller. Page 2

Neon Flasher

Neon Flasher

Noise Limiter

Noise Limiter

Pulse Generator

Pulse Generator

Signal Injector

Signal Injector

Slave Flash Trigger

Slave Flash Trigger

Snap

Snap. Page 1 Snap. Page 2

Swanee Whistle

Swanee Whistle

Touch Sensative Switch

Touch Sensative Switch. Page 1 Touch Sensative Switch. Page 2

Touch Switch

Touch Switch

Traficator Repeater

Traficator Repeater

Transistor Audio Amplifier

Transistor Audio Amplifier

Triplex Signaling

Triplex Signaling

Variable Ratio Counter

Variable Ratio Counter

Varicap BFO

Varicap BFO

WAA WAA

Waa Waa. Page 1 Waa Waa. Page 2


Transformer Ratio Analyser

Transformer Ratio Analyser. Page 1 Transformer Ratio Analyser. Page 2
Transformer Ratio Analyser. Page 3 Transformer Ratio Analyser. Page 4






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Last updated 15.5.2007
2003-2007 © Maurice Woodhead