![]() ![]() An electromagnet is formed by wounding a wire around a soft iron core. ![]() ![]() It consists of three parts –Įlectromagnet – This is a temporary magnet that becomes a magnet only when an electric current is passed through it. The fundamental construction aspects of an electromagnetic relay are very simple. The working principle of electromagnetic relays is the electromagnetic action. We will discuss all of them in detail below. Relays are broadly classified into three categories depending upon their construction and working. In large scale industries, where high reliability is required, relays are preferred. In small scale applications, fuses and similar devices are used for protection purposes. The control circuit regulates the flow of power and performs the basic switching operation using a small amount of current which can in turn be used to control a circuit with a high amount of current. It generally uses two circuits – A control circuit and a power circuit. Relays are basically switches which are primarily used for the protection of equipment. ![]()
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