Relays

Relays

---

A relay is used to control a high-current circuit with a low-current signal, as in the starter solenoid of your motor. They are a simple electromechanical switch made up of an electromagnet and a set of contacts. They can be broken down into 2 circuits (A control circuit and a load circuit). The control circuit is the side with the coil and the load circuit is the side with the switch. When a current flows through the coil, the resulting magnetic field attracts an armature that is mechanically linked to a moving contact. The movement either makes or breaks a connection with a fixed contact.

Circuit Opening Relay Wiring

Standard Relay Wiring

Changeover Relay Wiring

See also: http://www.autoshop101.com/forms/hweb2.pdf (More information on relays).

---

Article by Medicine_Man

---

Back to Electrical

Back to Main Page

Rollaclub