Which of class A and class B is more stringent in EMC?

One 、 What is electromagnetic compatibility (EMC)？

It includes that the equipment should be able to work normally in a certain electromagnetic environment , That is, the equipment should have certain electromagnetic immunity (EMS) And the electromagnetic disturbance generated by the equipment itself should not have too much impact on other electronic products , Electromagnetic disturbance (EMI).

Two 、 Why do it EMC？

In today's society , The harm caused by electromagnetic interference is becoming more and more serious , It has become the second air pollution 、 The fourth largest environmental pollution in the world after water pollution and noise pollution , It is also a mandatory requirement of all countries .

3、 ... and 、ClassA、ClassB What is it? ？ Which is more strict ？

ClassA Products are generally used in industry , Products for outdoor environment .

ClassB Products are generally used for civil , Products for indoor environment .

Of course, civil ones are stricter than industrial ones , The allowable radiation for industrial use is a little larger .

In fact, the most important thing is to consider the operating environment of the equipment ：

class A The product interference requirements are lower , But immunity is required to be stricter .

class B The product interference requirements are strict , But the anti-interference requirements are relatively low .

ClassI Refer to 3Pin Input , Products with protective grounding .

ClassII Refer to 2Pin Input , Products without protective grounding .

ClassA、ClassB And ClassI、ClassII There is no connection between .

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