This switching circuit for the power grid, featuring fast acting characteristics, was found in a 1965 General Electric documentation. Modern equivalent components can be used.
This control circuit or reversible contactor was found in a 1967 General Electric manual. The...
We found this circuit in a 1987 publication. Through a relay, it controls water valve solenoids at several...
The figure shows how to use a varicap in a conventional tuning circuit. The circuit may be an...