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电磁兼容(EMC)问题越来越受到人们的重视,而解决电磁兼容问题的实质则是如何抑制电磁干扰(EMI),电磁干扰主要分为共模干扰和差模干扰。本文首先介绍了电磁干扰的形式及起因,接着提出了测量和判别干扰模式的方法,最后对其分别提出了抑制技术并举了个在实际中进行抑制的例子。
More and more people pay more attention to electromagnetic compatibility (EMC) problem. How to solve the problem of electromagnetic compatibility is how to suppress electromagnetic interference (EMI). The electromagnetic interference is mainly divided into common-mode interference and differential-mode interference. In this paper, the forms and causes of electromagnetic interference are introduced first, and then the methods of measuring and discriminating the interference modes are proposed. Finally, the suppression techniques are put forward respectively and some examples are given to suppress them in practice.