Long maintenance circuit (CB8866E)

A 0 V signal initiates sampling on this circuit suggested by documentation from the 1970s. The integrated circuits used are uncommon today.

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Phase inverter (CB22232E)
Used in audio circuits in the excitation of output stages, this circuit provides audio signals with...
Push Pull Amplifier with 1 Transistor (CB20040E)
This interesting configuration uses two speakers as a load to have a push-pull excitation with...
Current-controlled oscillator (CB21648E)
This sweep generator or current-controlled oscillator was found in Popular Electronics from...