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 1987 circuit uses a common ignition coil to generate high voltage to power a fluorescent lamp that...
The sound of drums can be obtained with these two touch-triggered double-T oscillators. The...
This high-precision circuit was found in documentation from the 1990s. The integrated circuit is...