understanding electromagnetic relays： principles, applications, and advantages
Release time:2025-09-26 22:53:56
Electromagnetic relays are essential components in electrical and electronic systems, providing a reliable and efficient means of switching circuits. These relays are used to control a wide range of devices and systems, from household appliances to complex industrial machinery. In this article, we will explore the working principles of electromagnetic relays, their common applications, and the advantages they offer in modern electrical systems.
What is an Electromagnetic Relay?
An electromagnetic relay is a device that uses the magnetic field generated by an electric current to open or close a set of contacts, thus controlling the flow of electricity in a circuit. At its core, an electromagnetic relay consists of three main components： a coil, a movable armature, and a set of contacts.
Coil： When an electrical current flows through the coil, it generates a magnetic field around the coil.
Armature： The armature is a movable iron piece that is attracted to the coil when the magnetic field is generated. This movement changes the position of the contacts.
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