The relay is a device that uses low-current voltage and weak current circuit to control high-voltage and strong current circuit. Electromagnetic relay is a switch that uses an electromagnet to control the working circuit. When the protected componen...
The basic structure and working principle of the electromagnetic relay are similar to the contactor, which is composed of iron core, armature, coil, return spring and contact. Because the electromagnetic relay is used in the auxiliary circuit, its on...
Relay selection 1. Selection of voltage and currentThe selection should be based on the supply voltage of the control circuit and the maximum current that can be output, and then be selected according to whether the voltage and current of the control...
It plays the role of automatic adjustment, safety protection and conversion circuit in the circuit. Electromagnetic relays are generally composed of electromagnets, armatures, springs, contacts, etc., and their working circuits are composed of two pa...
If the electromagnetic relay works in simple words, when the electromagnet is energized, the armature is sucked down to make the two contacts and the working circuit is closed. The electromagnet loses its magnetism when it is powered off, and the spr...
Electromagnetic relay is an electronic control device. It has a control system (also called input loop) and a controlled system (also called output loop). It is usually used in automatic control circuits. It actually uses a lower current and lower cu...
The relay coil is represented by a long box symbol in the circuit. If the relay has two coils, draw two long boxes in parallel. At the same time, the letter symbol "J" of the relay is marked inside or beside the long box. There are two ways to repres...
SWITCHING HIGH CURRENT CIRCUITS:The most common application of automotive relays is to switch a high current circuit using a low current circuit. This application comes into play whereby an in-line switch does not have the capacity to handle the curr...
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