This Intersil circuit was found in a 1980s documentation. Operational are of the time, but current equivalents can be experienced. The graph with the circuit performance is given next to the diagram.
This circuit is from an American 1964 documentation. Transistors of the time are used, but modern...
This circuit is from an ancient American documentation. The T-Bridge circuit determines the...
This circuit for the car can be found in other versions in this section. This is from an 80's...