understanding the 12v relay： applications, working principle, and benefits
Release time:2026-01-01 21:20:48
A 12V relay is a crucial component widely used in electronic systems for controlling high-power devices with low-power circuits. It functions as an electromagnetic switch, allowing a low-power control circuit to turn on or off a higher-power circuit. This article explores the working principle, applications, and advantages of a 12V relay, as well as tips for selecting the right relay for your project.
What is a 12V Relay?
A 12V relay is an electromechanical device that enables one circuit to control another circuit. It is typically used to control high-power electrical devices (like motors, lights, and heating systems) through low-voltage signals, such as the 12V control signals commonly used in automotive and embedded systems. The relay consists of two main parts： an electromagnet (the coil) and a set of switches or contacts. The operation of the relay is relatively simple, but it provides significant control over circuits that require more power than the control system can supply.
How Does a 12V Relay Work?
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