What is an Electromagnetic Relay?

    An electromagnetic relay consists of a coil of wire (the lectromagnet), a movable armature, and a set of contacts. The relay operates on the principle of electromagnetism. When an electric current passes through the coil, it generates a magnetic field that attracts the armature. This movement of the armature opens or closes the contacts, thus controlling the flow of electricity in the connected circuit.

    When the current is turned off, the magnetic ield collapses, and the armature returns to its original position, either opening or closing the contacts in reverse. This allows the relay to function as a remote switch, controlling a high-power circuit with a much lower current or voltage.fe    An electromagnetic relay is a critical electrical component used in numerous applications, from industrial automation to consumer electronics. It is a type of switch that is operated by an electromagnet, allowing it to control circuits remotely. In this article, we will explore the working principle of electromagnetic relays, their types, applications, and why they are indispensable in modern electrical systems.