Push pull amplifier (CB21941E)

Using a pair of CK722s, this booster step of a few milliwatts of power was obtained in a 1960 Gernsback publication.

Relay and neon driver (CB8833E)
Found in a 1960s documentation, this circuit uses a transistor to drive a relay as well as a set...
Capacitive Alarm (CB12181E)
This approach alarm was found in Radio Electronics from July 1990. The circuit must be powered by a...
High Power Source (CB20214E)
This 75 W power supply was found in American documentation from the 1980s. Transistors can be...