A relay is an electrically operated switch that is remotely activated by an electromagnet, which pulls on a set of contacts to open or disconnect a circuit.
Relays are commonly used to convert signals, radio frequencies, high-current circuits when low-current circuits are used, as well as resistors, motors, lamps, inductors and
Capacitors are applied at equal loads. Relays are useful when in-line switches or existing circuits are not capable of handling the required current.
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