Yueqing Zhenglin Electric Appliance is a modern enterprise with nearly 20 years of experience in relay production. The company has several automatic relay production and testing lines. The company has long-term close cooperation with many high-quality parts supporting enterprises. The product quality is stable and reliable, and has won the trust and praise of our customers.
Relay (English name: relay) is an electrical control device. It is an electrical appliance that makes a predetermined step change of the controlled quantity in the electrical output circuit when the change of the input quantity (excitation quantity) meets the specified requirements. It has the interaction between the control system (also called the input loop) and the controlled system (also called the output loop).
The intermediate relay is usually used to transmit signals and control multiple circuits at the same time. It can also be used to directly control small capacity motors or other electrical actuators. The structure and working principle of the intermediate relay are basically the same as those of the AC contactor. The main difference between the intermediate relay and the AC contactor is that the number of contacts is more and the contact capacity is small. When selecting the intermediate relay, the voltage grade and the number of contacts are mainly considered.
Time relay is a very important component in electrical control system. In many control systems, time relay is needed to realize time delay control. Time relay is a kind of automatic control electrical appliance that uses electromagnetic principle or mechanical action principle to delay the closing or breaking of contacts. The feature is that there is a delay between the signal received by the attraction coil and the contact action.
Cleaning process of automobile relayPostTime: 2022-11-01 Views: 618 |
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Cleaning process of automobile relay
When a certain voltage or current is applied to both ends of the coil of the electromagnetic relay, the magnetic flux generated by the coil passes through the magnetic circuit composed of the iron core, yoke, armature and the working air gap of the magnetic circuit. Under the effect of the magnetic field, the armature attracts to the pole of the iron core, thus pushing the normally closed contact of the contact to open and the normally open contact to close; When the voltage or current at both ends of the coil is less than a certain value, and the mechanical reaction is greater than the electromagnetic attraction, the armature returns to the initial state, the normally open contact is disconnected, and the normally closed contact is connected. Then, the automobile relay can be regarded as a combination of the control circuit of coil operation and the main circuit of contact operation. In the control circuit of the relay, there is only a small working current. This is because the contact capacity of the control switch is small, which can not be used to directly control the load with large electricity consumption. Only the contact of the relay can control its on-off. The relay is not only a control switch, but also a control object (actuator). Take the fuel pump relay as an example. It is the control switch of the fuel pump. However, the coil of the fuel pump relay can form a loop through the grounding point of the electronic control unit only when the triode is driven by the electronic control unit. |
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