Electrical Relay

You can see full analysis of Diode, its usage and function on different motherboards and how to check its voltage and ohm. Solid State Relay (SSR), Electromechanical Relay (EMR), Single Pole Single Throw Relay (SPST), Double Pole Single Throw Relay (DPST), Single Pole Double Throw Relay (SPDT), Double Pole Double Throw Relay (DPDT), Timer delay Relay