understanding the 12v relay： applications and working principles
Release time:2025-12-12 11:36:32
A 12V relay is an electrical component that plays a crucial role in controlling larger electrical devices using a small control signal. It is commonly used in automation systems, control circuits, automotive applications, and home appliances. In this article, we will explore the working principle of the 12V relay, its applications, and how it enhances the functionality of various devices.
What is a 12V Relay?
A 12V relay is essentially an electromagnetic switch that allows a low voltage, such as 12V DC (direct current), to control a higher voltage circuit. It consists of a coil, a movable armature, and a set of electrical contacts. When 12V is applied to the coil, it generates a magnetic field that pulls the armature, causing the contacts to either open or close, depending on the design of the relay. This action enables the relay to either break or complete the circuit, controlling a larger electrical load with a small control signal.
Working Principle of a 12V Relay
The working of a 12V relay is quite simple. The relay consists of three main parts：
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