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 …

Sep 11, 2024 · Instead of mechanical operation, a relay deploys an electrical signal to drive an electromagnet, which in turn engages or breaks (connects or disconnects) another circuit.

Everything you need to know about electrical relays - common applications, how they work, and how to use them.

The meaning of RELAY is a supply (as of horses) arranged beforehand for successive relief. How to use relay in a sentence.

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 …

Aug 22, 2025 · Learn how relays work, their types, and applications in automation, safety, and electronics. Choose the right relay for your project with this guide.

Sep 30, 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.