Windshield wiper tiner (CB9523E)

Found in old documentation, this circuit can be implemented even today with the use of a 2N2646 for the unijunction and a TIC106 for the SCR.

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High current dimmer (CB7214E)
In fact, this dimmer can be used with currents up to 1.5 A according to the General Electric...
Simple Transistor Voltmeter (CB18536E)
This circuit can use any general purpose NPN transistor and the accuracy depends on the tolerance of...
Telluric Receiver (CB12850E)
This simple transistorized radio for the medium wave range "extracts energy from the earth" using a...