A relay is an electromechanical switch that uses a small electrical signal to control a larger current circuit. It works by energizing a coil, creating a magnetic field that moves contacts, opening or closing the connected circuit. Relays are essential in automation, vehicles, and control systems. #RelayWorking #ElectronicsBasics #ElectricalSwitching #Automation #ControlSystems #RelayCircuit #TechEducation #EngineeringBasics #Electromechanical #RelayTechnology #careskillsacademy #pcbrepairingcou