Relays are crucial components in electrical and electronic systems, offering a means to control high-power devices with low-power signals. One of the most commonly used types is the 12V relay, which operates with a 12V DC voltage to control circuits and equipment. This article will explore the basic working principles of a 12V relay, its key features, and the various applications where it is employed.
What is a 12V Relay? A relay is an electrically operated switch that allows a small voltage to control a large current. The 12V relay refers to a relay that is activated by a 12-volt direct current (DC) supply. These relays have a coil inside that generates a magnetic field when current flows through it. This magnetic field either opens or closes a set of contacts in the relay, allowing or interrupting the flow of current to a connected device. 12V relays are used in a wide range of applications, from automotive circuits to industrial control systems. The most notable feature of a 12V relay is its ability to manage circuits requiring much higher current levels, like motors, lights, or solenoids, while being controlled by low-power electronics, such as microcontrollers or even simple switches.