A relay is an electrically operated switch that either opens or closes an electrical circuit. Generally, Relays have an induction mechanism at the input part that reflects certain input variables like; voltage, current, power, frequency, impedance, temperature, speed, pressure, etc. It has an actuator at the output part that can understand the ON & OFF […] The post Electromagnetic Relay : Construction, Working, Circuit, Types & Its Applications appeared first on WatElectrical.com.
