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1 Introduction The sources of EMI are both natural and human-made. Natural sources include sun and stars, as well as phenomena such as atmospherics, lightning, thunderstorms, and ESD (electrostatic discharge). On the other hand, any electrical or electronics equipment qualifies as a potential human-made resource of EMI. Part Ⅰ has listed most of common sources of EMI. This Part will detail a few of sources that we are concerned the most. The sources of EMI are not easy to precisely specify and classify, but we can attempt to do so if we know some of the characteristics of the offending signals. Usually, there are three practical approaches for the classification: frequency content,
1 Introduction The sources of EMI are both natural and human-made. Natural sources include sun and stars, as well as phenomena such as atmospherics, lightning, thunderstorms, and ESD (electrostatic discharge). On the other hand, any electrical or electronics equipment qualifies as a potential human-made resource of EMI. Part I has listed most of common sources of EMI. This Part will have a few of sources that we are concerned the most. The sources of EMI are not easy to precisely specify and classify, but we can attempt to do so so we know some of the characteristics of the offending signals. Usually, there are three practical approaches for the classification: frequency content,