Found in a 90s Radio Electronics, this circuit can supply currents of a few amps, according to the power transistor. The power transistor must be equipped with a heat sink.
June 2017 - New Honeywell MT MICROSWITCH Series can be ordered from Mouser Electronics for...
This two-transistor circuit was found in the January 1994 issue of Electronics Now. The circuit can...
This circuit is from American documentation from the 70s. Transistors are not common today, but...