Electro magnetic relay

The field attracts an iron armature, whose other end pushes the contacts together, completing the circuit. When the current is switched off, the . Electromagnetic relays are those relays which are operated by electromagnetic action. Modern electrical protection relays are mainly micro processor base but still electromagnetic relay holds its place.

It will take much longer time to be replaced the all electromagnetic relays by micro processor based static relays.

The electromagnetic relay is mainly classified into two types they are electromagnetic attraction relay and electromagnetic induction relay.

The conventional types of electromagnetic relays (electro-mechanical relay) has one or more coils, movable elements, contact system etc and its operation depends on whether the operating torque or force is greater than the restraining torque or force.

The relay operates when the operating force is greater . The coil of wire causes an electromagnetic field. Armature: A relays moving part. The armature opens and closes the contacts.

An attached spring returns the armature to its original position. Contacts: The conducting part of the switch that makes (closes) or breaks (opens) a circuit. How Relays Work: Relay Diagrams Relays . Magnetic latching relays require one pulse of coil power to . Many relays use an electromagnet to mech. A small animation on how an electromagnetic relay works. There can be multiple contacts of both normally open and normally cl.

A relay is an electromechanical device having electrical, magnetic and mechanical components. An electromechanical relay consists of three terminals namely common (COM), normally closed (NC) and normally opened . Draw the schematic diagram for the relay circuit to be analyzed. Analyze the circuit, determining all . In the following diagram, the purple cylinder, the coil around it and the green shaft make the actual relay.

Both AC and DC relays work on the same principle as electromagnetic induction, but the construction is somewhat differentiated and also depends on the application for which these relays are selected. It opens and closes under control of electric curent applied. The switch is operated by an electromagnet to open or close sets of contacts. Filed under GCSE, GCSE Electricity, General Science.

Both circuits are separate and do not electrically connect.