When the current is switched off, the armature contracts.
When a current passes through the coil of a relay, the armature moves to increase the flux. In numerous vehicles the solenoid additionally connects with the starter pinion with the ring gear of the engine.Īll start relays are simple electromagnets consisting of a coil and a spring-loaded iron armature. Its capacity is indistinguishable from that of a transistor except that it utilizes an electromagnetic solenoid instead of semiconductor to play out the exchanging. A starter relay, commonly known as a starter solenoid, is the part of a vehicle which switches a huge electric current to the starter motor, in light of a little control current, and which in turn sets the engine in motion.