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 field effect transistor amplifier circuit in common gate or common port configuration is from an old...
This circuit was obtained in an old American documentation. The integrated circuit used is...
This zero crossing detector is of the 1993 Motorola Linear Interface ICs. The source is...