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How electronic relays work

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Hits:  UpdateTime:2019-11-21 11:05:19  【Printing】  【Close
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  This article mainly explains the working principle of electronic relays. In today's industrial production, one of the components we commonly use - relays, also called electric cymbals, is an electronic control device. The relay has a control system (also called input circuit) and is controlled. The system (also known as the output loop), which is commonly used in automatic control circuits, is actually an "automatic switch" that uses a small current to control large currents. Therefore, it plays the role of automatic adjustment, safety protection and conversion circuit in the circuit. The following article is a small series for everyone to explain the working principle and role of the relay.
The working principle of the electronic relay is as follows:
Relay, also known as electric cymbal, is an electronic control device that has a control system (also known as an input circuit) and a controlled system (also known as an output circuit). It is usually used in automatic control circuits. It is actually An "automatic switch" that uses a small current to control large currents. Therefore, it plays the role of automatic adjustment, safety protection and conversion circuit in the circuit. When the relay is working, the electromagnet is energized, the armature is sucked into contact, and the working circuit is closed. When the electromagnet is de-energized, it loses its magnetism, and the spring pulls the armature and cuts off the working circuit. Therefore, the relay is a switch that uses an electromagnet to control the on and off of the working circuit.

Electronic relays have the following effects:
Expand the control range: For example, when the multi-contact relay control signal reaches a certain value, it can switch, disconnect, and turn on multiple circuits at the same time according to different forms of the contact group.
Amplification: For example, sensitive relays, intermediate relays, etc., with a very small amount of control, can control a very high power circuit.
Integrated signal: For example, when a plurality of control signals are input to a multi-winding relay in a prescribed form, the comparison is integrated to achieve a predetermined control effect.
Automatic, remote control, monitoring: For example, the relay on the automatic device together with other electrical appliances can form a program control circuit for automatic operation.
  Relays are typically used in electrical control circuits to amplify the contact capacity of miniature or small relays to drive larger loads. If the contacts of the relay can be used to turn the coil of the contactor on or off. Generally, relays have more open and close contacts. Of course, relays can also implement certain special functions, such as logic operations, through proper connection. The working principle of the electronic relay is here. If you need to buy a relay, you can directly contact the Gordon Relay customer service.
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Automotive relays and fuses have a common feature, both for safety, and the lack of understanding of circuit components, so some people are not very clear about the difference between the two. Everyone can distinguish in appearance, and more is not understanding the principle of action. Let me talk about the difference between car relays and fuses. An automotive relay is an electrical control device that is an electrical device that causes a predetermined step change in the controlled output quantity in an electrical output circuit when the change in the input amount (excitation amount) reaches a prescribed requirement. It has a control system (also known as an input loop) and a controlled system (also known as an output back)

2019-11-21

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