EMI is everywhere. Even Mother Nature provides many sources of electromagnetic interference, and our own sun is a source of much radiation on a daily basis. However, for electrical equipment we usually only have to deal with man-made sources of radiation. These can be intentional such as radio , TV, telephony and RF, or they can be unintentional (sources can appear as as result of load distribution, vehicle ignition systems and even power supplies!). This article will address some of these unintentional sources and more importantly how to eliminate them.
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