This bidirectional motor control was found in an 80's Electronic Engineering. The circuit uses a component of the time and is suitable for motors up to 1 A.
This circuit divides the grid 60 Hz frequency to obtain 20 Hz to drive mechanical watches used at...
This 80's circuit can be implemented with modern equivalent FETs with lower on resistance. The...
This circuit was obtained in a 1964 Electronic Design. Equivalent modern transistors can be used....