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Why are Switched Mode Power Supplies (SMPS) associated with radio interference?

April 26, 2017associated interference mode power radio smps

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Why are Switched Mode Power Supplies (SMPS) associated with radio interference?

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Switched modepower supplies (SMPS)employ high frequency switching and thus, are a source of radio interference, a recipient of radio interference and a conduit of radio interference. (Older linear type transformer based power supplies do not employ high frequency switching voltages and will be quieter as compared to switching type of supplies).