The circuit is from old documentation but can be implemented with any modern power MOSFET. The type of MOSFET depends only on the voltage and current of the controlled load.
This circuit was obtained in a 1964 magazine, but it can be easily assembled today, as the...
This circuit can be implemented with discrete transistors. We found it in General Electric's 1964...
Found in Philips' 1967 documentation, this circuit makes use of period components. The SCR can be...