This is a circuit which turns ON our domestic lights automatically when it is dark. In Automatic Night Light Switch Circuit, we design a circuit which turns ON our domestic lights automatically when ...

This article explains an upgraded smart solid-state AC switch system that uses microwave Doppler radar instead of traditional PIR sensors.

This automatic park light switch with LDR automatically turn ON the light when the surrounding light dims to a preset level. The first circuit diagram is an NPN design intended for negative grounded ...