Types and detection methods of relays commonly used in automobiles-Zhejiang Hui You Auto Parts Co., Ltd.

Types and detection methods of relays commonly used in automobiles

Posted by Admin | 08 Nov

Automotive relays commonly used types and testing methods Automotive relays professional knowledge dry goods

First, the relay commonly used in automobiles is the 4-pin normally open relay. Less commonly used relays include three-legged relays (such as flasher), five-legged relays (with normally open and normally closed contacts), multi-legged relays (such as wiper clearance relays), and so on.

Second, and unknown to many, the main form of relay damage is contact ablation rather than coil burn. Some people think that as long as the relay can draw, there is no problem, this idea is very wrong. The reason is very simple, because the contact is a large current, for a long time natural easy to burn out, and the coil is a small current, basically little damage.

Thirdly, automobile relays do not work. One reason that is often ignored is that the relay pins are oxidized or have poor contact with the socket, rather than the relay itself is damaged or the wiring is faulty.