This circuit for alternating current loads has a built-in timer. SCR2 is according to the motor current and must be equipped with a heat sink. The circuit is from a 70s GE documentation.
We found this circuit in the November 1985 issue of Radio Electronics magazine. It uses TTL...
The basis of this circuit is a CA3130 operational amplifier. The transistor can be BC548, and the...
This circuit switches off a load in case of excess current acting as a fuse. The circuit is from a...