Identify Terminal Pins of A Relay Without Reference to Datasheet

Relays that normally used in electronic circuits are SPDT and DPDT types due to their flexibility in controlling circuit switching. In the next section, a demonstration on identifying the pins of a relay from SPDT or DPDT type without referring to its datasheet will be illustrated. A 5-pins type relay, a 6-pins type relay and an 8-pins type relay will be used in this demonstration.