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 …
What Is Relay? How Relay Works? - Electronics Hub
Sep 11, 2024 · A Relay is a simple electromechanical switch. While we use normal switches to close or open a circuit manually, a Relay is also a switch that connects or disconnects two circuits.
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 …
How do relays work? - Explain that Stuff!
Aug 30, 2024 · A relay is an electromagnetic switch operated by a relatively small electric current that can turn on or off a much larger electric current. The heart of a relay is an electromagnet (a coil of …
Relay | Switching, Contacts, Circuitry | Britannica
Dec 20, 2025 · relay, in electricity, electromagnetic device for remote or automatic control of current in one (relay) circuit, using the variation in current in another (energizing) circuit. For example, in a …
What is a Relay and How Does a Relay Work - pcbasic.com
Nov 24, 2025 · A relay is an electrical relay device, equivalent to a switch controlled by electrical signals. Relays can control high-power load circuits through low-power control circuits and are key …
What is Relay? - GeeksforGeeks
Jul 23, 2025 · What Is A Relay? A simple electromagnetic switch is a relay that can be used to make or break an electrical connection. Basically, the relay is just like a mechanical switch, but we can control …