In fact, it is a night light system that automatically turns on the outside lights when it gets dark and turns them off at dawn. The circuit only applies to incandescent lamps.
This circuit is from a 1995 publication; The current is obtained by dividing 1.25 by R1. The...
We found this circuit in an old American publication. It is possible to test common FETs using a...
This circuit was obtained in a 90s documentation from Analog Devices. The sensitivity is in the...