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A relay operates as an electrically controlled switch that uses an electromagnet to open or close contacts in a circuit. When a small current flows through the coil of the relay, it generates a magnetic field that attracts a movable armature, either making or breaking a connection in the circuit. This allows a low-power signal to control a high-power circuit, enabling automation and remote control of electrical devices. Relays are commonly used in various applications, including automotive systems, industrial machinery, and home automation.

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3mo ago

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