12v Relay

Relay is an electrically operated switch. Relay is used to isolate electrical load. Two configuration1.NO(normally open).2.NC(normally close). Relay have a coil that is energized by 12v , when coil energized switching action takes place. BC548 BC548 is general purpose NPN bipolar junction transistor. This transistor act as a driver to pull the relay ON. The … Continue reading 12v Relay