How Relays Work - Basic working principle electronics engineering electrician amp

 

How Relays Work - Basic working principle electronics engineering electrician amp

An electromechanical relay is used to establish or interrupt the continuity of an electrical circuit, by switching contacts. Used for signaling or controlling various components, the contacts are not intended to accept too much current. important, usually 8 Amps at most. For higher powers (motors, resistors) contactors are more appropriate.

The first applications of relays appeared around 1837, and its inventor was the American scientist Samuel F.B. Walrus.

It is made up of two distinct parts, the control part and the contact part.The control part has a winding, which when energized (A1 / A2) creates an electromagnetic field (electromagnet) at the end of the reel. This magnetic field will attract a metallic element mounted on a movable axis (non-conductive), which will actuate mechanical contacts. Once the coil is de-energized or the contact returns to its initial position thanks to the return spring.
There are also bistable relays whose contacts retain their position even after the power supply has been cut in the control coil. A second coil power supply is needed for the contacts to return to their initial positions. It is widely used in control of industrial automation.
The electromagnet (coil) can be supplied with Very Low Voltage, 12 V, 24 V, 48 V direct or alternating or with Low Voltage, 230 V, 400 V.

The actuator part consists of one or more fully independent open (NO = normally Open) and closed (NC or NC = normally closed) contacts and a common terminal (common).

 

How Relays Work - Basic working principle electronics engineering electrician amp

An electromechanical relay is used to establish or interrupt the continuity of an electrical circuit, by switching contacts. Used for signaling or controlling various components, the contacts are not intended to accept too much current. important, usually 8 Amps at most. For higher powers (motors, resistors) contactors are more appropriate.

The first applications of relays appeared around 1837, and its inventor was the American scientist Samuel F.B. Walrus.

It is made up of two distinct parts, the control part and the contact part.The control part has a winding, which when energized (A1 / A2) creates an electromagnetic field (electromagnet) at the end of the reel. This magnetic field will attract a metallic element mounted on a movable axis (non-conductive), which will actuate mechanical contacts. Once the coil is de-energized or the contact returns to its initial position thanks to the return spring.
There are also bistable relays whose contacts retain their position even after the power supply has been cut in the control coil. A second coil power supply is needed for the contacts to return to their initial positions. It is widely used in control of industrial automation.
The electromagnet (coil) can be supplied with Very Low Voltage, 12 V, 24 V, 48 V direct or alternating or with Low Voltage, 230 V, 400 V.

The actuator part consists of one or more fully independent open (NO = normally Open) and closed (NC or NC = normally closed) contacts and a common terminal (common).