Found in a 1965’s General Electric documentation, this circuit can be designed with modern equivalent transistors depending on the current of the controlled motor.
This circuit with two operating modes was found in the September 1989 issue of Radio Electronics...
This circuit was suggested by old French documentation, but it can be used as a shield, in which...
This well-crafted speed game setup for two competitors was found in a 1998 Poptronics. The circuit...