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Discussion in 'Wiki' started by n1ist, Jun 22, 2009.

  1. n1ist

    n1ist Well-Known Member

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    Malden MA
    A switch or multiple switches that is operated by an electromagnet. A relay lets you use one circuit to control another, often so a low voltage or low current signal can switch a higher voltage or power.

    A high-power relay used for switching line power is often called a contactor.

    Some relay modules [often just called relays] include decoders to allow control via DMX or some other serial protocol.

    A solid-state relay replaces the mechanical switch and electromagnet with an optocoupler and a triac.

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