Interface Relay With AVR

Description Relay is an electrically operated switch. Relay is used to isolate electrical load. Two configuration 1.NO(normally open). 2.NC(normally close). Relay has a coil which 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 … Continue reading Interface Relay With AVR