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  1. Relay - Wikipedia

    A relay is an electrically operated switch. It has a set of input terminals for one or more control signals, and a set of operating contact terminals. The switch may have any number of contacts in multiple …

  2. How Electrical Relays Work - Circuit Basics

    A relay is an electromagnetic switch that opens and closes circuits electromechanically or electronically. A relatively small electric current that can turn on or off a much larger electric current operates a relay.

  3. Relay race - Wikipedia

    A relay race is a racing competition where members of a team take turns completing parts of racecourse or performing a certain action. Relay races take the form of professional races and amateur games.

  4. Relay

    A community of educators — Relay serves educators at every point in their careers and is committed to recruiting and retaining teachers and leaders to meet the tremendous need across this country.

  5. How Relays Work - HowStuffWorks

    May 17, 2024 · Powered by electromagnets, a relay is simply a mechanical switch, and you'll find them all over a typical house or car. Find out what these simple components are doing in all your electrical …

  6. How a Relay Works and How to Use It in Circuits

    Mar 8, 2024 · Learn how a relay works and how you can use it to turn on/off high-power devices with tiny signals. Includes practical circuit examples.

  7. What is a relay, its function, types and relay wiring

    A relay is an electrical switch that can be activated by a low-power signal. Learn more about what is a relay and their many applications here!