Automotive relays are useful in our daily life, but we seldom see it and do not understand it. Next by Hunan Meicheng Ceramic Technology Co., Ltd. briefly introduce the working principle and role of the automotive relay.

The working principle of automotive relay: automotive relay is an electrical control device, its role is to play in the circuit relay, amplification and protection of electrical signals. Its principle is to use the principle of electromagnetic induction, in the middle of the control circuit to join a solenoid coil and two controllable switches, when the solenoid coil is connected to the power supply, produce a magnetic field to attract the controllable switch is closed, so that the current can be circulated; when the solenoid coil is disconnected from the power supply, the magnetic field disappeared, the controllable switch is disconnected, the current is cut off.

Automotive relays mainly have the following roles:

1. Signal transmission: automotive relays can transmit control signals from one circuit to another, playing the role of signal transmission and conversion.

2. Protection of circuits: automotive relays can play a role in isolation and protection between the control circuit and the load circuit to prevent the control circuit from being damaged by the load circuit.

3. Automatic control: by controlling the on-off state of the relay, you can achieve automatic control of various devices, such as car lights, fans, relays, etc..

4. Current amplification: automotive relays can convert the smaller control current into a larger current output, thus achieving a higher power load drive.

In short, the principle of automotive relay is the use of electromagnetic induction to produce a magnetic field to attract the controllable switch closure or disconnection, thereby controlling the switching state of high-power loads, and play a role in amplifying and protecting the circuit signal.

The above is the content brought to you by Meicheng Ceramics. Meicheng ceramics is a collection of research and development, production, sales in one of the electronic ceramics enterprises, start-up listed enterprises, located in Hunan Province Xinhua County Electronic Ceramics Industrial Park, covers an area of 15W flat. Mainly engaged in: zirconia ceramics, alumina ceramics, talc ceramics and other non-oxide ceramics research and development and application.