This circuit was found in a 1965’s General Electric documentation. It is intended for low voltage brush motors. The SCR must be according to the engine controlled.
An interesting option is the one that makes use of the MC3373 integrated circuit and which is...
We found this circuit in a Radio Electronics from February 1970. The frequency of 1,400 kHz in the...
This power step drains just 3.5 mA from the battery and can provide good playback on a 4-ohm...