This circuit works like a solid-state contactor. We find it in General Electric documentation from 1965. SCRs can be modern equivalents according to the controlled load.
This circuit was found in the July 1992 issue of Radio Electronics magazine. The circuit is based...
The number of pulses produced by this circuit depends on the switch pressed. The circuit is from...
This ultra-low power metronome was found in a 1991 documentation. The output transistor is general...