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 simple circuit for motors that depends on the MOSFET used was found in the January 1998...
This transistorized shield also functions as a logic gate. The power supply can be in the range of 4.5...
Found in a 90s Popular Electronics, this Hartley oscillator uses an output transformer of the type...