Simple 1-tube receiver (T960E)

This 1V heater tube circuit was found on a Radio Craft from 1945. The circuit is for medium wave and can be used as a tuner.

120 VAC x 120 W Inverter (CB7261E)
Suggested by a 1968 Motorola power semiconductor manual, this circuit uses a special transformer and...
Windshield wiper timer (CB6052E)
This windshield wiper timer was obtained in an 80's Hands On. The transistor can be the BC548 and...
Precision Diode (CB15803E)
Both the operational amplifier and the diodes admit equivalents in this circuit suggested by...