A relay is an electromagnetic change that makes use of a small electrical sign to manage a bigger electrical sign. Relays are utilized in all kinds of functions, together with industrial management, telecommunications, and automotive methods.
There are lots of various kinds of relays, however the most typical sort is the electromechanical relay. Electromechanical relays have a coil of wire that’s wrapped round a metallic core. When {an electrical} sign is utilized to the coil, the core turns into magnetized and attracts a metallic armature. The armature is related to a set of contacts, that are used to manage the circulate of electrical energy within the bigger electrical circuit.