SRD-6VDC-SL-C Songle relay T73-6V 5pins

Relay is a device with current control switch. Relay working principle is that when the relay coil after electrify, iron core in a coil to produce powerful electromagnetic force, pull-up armature drives the reeds, make contact 1, 2, disconnect, 1, 3 through. After the power coil, spring to reset the reeds, make contact 1, 2, get through, 1, 3, disconnect. As long as the need to control the circuit by the contact between 1, 2, 1, 2, called the normally closed contact) or contact between 1 and 3 (referred to as a normally open contact), would be controlled using the relay for a 2. The purpose of the coil pins 4, 5, and dc voltage at both ends.

Among the three legs on the further side of the foot is output contact public terminal, the other two pins are coil, namely the drive end. Another two feet there were often opened normally closed contacts. The diagram below: A and B foot drive electric terminal 1 foot to control circuit, and A foot out of the 2 or 3 feet (3 feet normally closed, normally open 2 feet)