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What is EMC

[Abstract]:
Withthedevelopmentofelectricalandelectronictechnologies,householdelectricalappliancesarebecomingmoreandmorepopularandelectronic,andthedevelopmentofbroadcastingandtelevision,postandtelecommunications,a

 

       With the development of electrical and electronic technologies, household electrical appliances are becoming more and more popular and electronic, and the development of broadcasting and television, post and telecommunications, and computer networks are becoming more and more complicated. The electromagnetic environment has become increasingly complex and deteriorating, making electromagnetic compatibility (electromagnetic interference (EMI) and electromagnetic interference of electrical and electronic products. The electromagnetic immunity (EMS) problem has also been increasingly valued by governments and manufacturing companies in various countries. Electromagnetic compatibility (EMC) of electronic and electrical products is a very important quality indicator. It not only relates to the reliability and safety of use of the product itself, but also affects the normal operation of other equipment and systems. Electromagnetic environment protection issues.

       The full name of EMC (Electromagnetic Compatibility) is Electro Magnetic Compatibility, which is defined as "the ability of equipment and systems to work properly in their electromagnetic environment and does not constitute unacceptable electromagnetic disturbance to anything in the environment." This definition includes two aspects. Meaning, first of all, the device should be able to work in a certain electromagnetic environment, that is, the device should have a certain degree of electromagnetic immunity (EMS); Secondly, the electromagnetic disturbance generated by the device itself cannot produce too much of other electronic products. Impact, electromagnetic disturbance (EMI).

       The EC government stipulates that from January 1, 1996, all electrical and electronic products must pass the EMC certification, and the CE mark must be affixed before they can be sold in the EC market. This move has caused widespread influence in the world. Various governments have taken measures to impose mandatory management on the RMC performance of electrical and electronic products. Internationally influential, such as the EU Directive 89/336/EEC (EMC Directive), the United States Code of Federal Regulations CFR 47/FCC Rules, etc. all put forward clear requirements for electromagnetic compatibility certification.

 

 

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