Unintended electromagnetic emissions can cause interference to nearby communications receivers —radio, TV, GPS, WiFi, and more. Many years ago, EMI problems were called RFI, or radio frequency ...
Transmitter power is not the sole issue, but rather a combination of power and proximity. The lowly cell phone a few inches away may cause more problems than the broadcast transmitter a mile away. The ...
Find a downloadable version of this story in pdf format at the end of the story. Many designers think meeting the worldwide safety standards for power supplies in mains-powered products involves ...
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