What is the working principle and function of the relay

Update:18-11-2020

What is the working principle and function of the relay? The use of the relay in our home is still very important. It can provide the most basic living security for the home life, but we must pay attention to the use of the relay to avoid unnecessary trouble.

First, What is the function and principle of the relay

The role of the relay: It can increase the scope of the entire circuit, and achieve the purpose of controlling the high-power circuit, so that it can operate automatically. The principle of the relay: When the input is at a fixed value, the working state can be changed, and the working state can be changed to avoid accidents.

Second, the correct use of the relay

1. When using the relay, it should be used according to the instruction as much as possible, and each parameter must be within the specified range, so as to ensure sufficient safety. Furthermore, the load and use time of the relay cannot be determined, after all, it will change according to the surrounding environment and load.


2. If you plan to use a DC relay indoors, you need to use a rectangular wave to perform the work. The AC relay used indoors needs to use a sine wave to perform the work. If you want the relay to be used better, don't let the relay be hit, otherwise the internal components are easily damaged.


3. During the use of the relay, ensure that the surrounding environment has a moderate temperature and humidity, and the air cannot contain more harmful gases, otherwise it will affect the use of the relay. If it is a polarized relay, then the voltage properties of the coil must be considered to ensure that it can be used normally.


Regarding the function and principle of the relay, as well as the correct use of the relay, I will first introduce it here. Do you understand? The function of the relay is quite good, but before using it, you must know the relevant knowledge so that there will be no trouble when using it.

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