This circuit is from an old documentation from the 80's. The circuit provides an output signal for a warning or alarm system that indicates when a fuse or circuit breaker opens.
This circuit is more sensitive than the previous one, triggering when a laser beam that hits the...
This circuit was obtained in a 1967 Electronics World. The components are still common today, the...
The simple touch of the fingers on a sensor causes this circuit to drive a motor that goes into...