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 …
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 …
Understanding Relays: How and When to Use Them
Aug 15, 2025 · This guide covers relay types, contact configurations, pin labels, selection tips, applications, relay vs. transistor comparison, and how to test and troubleshoot relays.
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.
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 …
What is Relay? - GeeksforGeeks
Jul 23, 2025 · Basically, the relay is just like a mechanical switch, but we can control it with an electromagnetic signal instead of manually turning it on or off. It can be of different types, like …
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!
What Is Relay And How Does It Work? - Regent Electronics
Feb 24, 2025 · A relay is an electromechanical switching device that allows a low-power signal to control a high-power circuit. It is widely used in automation, electrical protection, and remote control …
Electrical Relays: How They Work and Their Applications
An electrical relay is an electrically operated switch that uses an electromagnet to control one or more sets of contacts. Relays allow a low-power signal to control a high-power circuit, providing …
How Does a Relay Work? A Complete Guide - Microchip USA
Aug 22, 2025 · A relay is an electromechanical or solid-state device that uses a small input signal to switch a larger load current. In simple terms, it works like a remote-controlled switch.