Found in a 1967 General Electric SCR manual, this circuit triggers in case of excess current, causing the fuse to blow or a circuit breaker to open. The components are from the era.
This circuit supplies a load with pulsating direct current that can be filtered by C1 (10 uF to...
Interval pulses emitted by this circuit are picked up in a medium wave radio nearby. The circuit is...
The transistor used in this circuit is uncommon today. AC124 or equivalent such as AC188K and...