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From: dbvanhorn on 14 Apr 2010 18:47

> The same thing also happens with some isolated DC-DC converters. When
> only very short wires are on the secondary DC-side, everything is OK,
> but with a real circuit, lots of noise is emitted.

Effectively this is an isolated DC-DC flyback since the input is line
voltage rectified and filtered.

#1 rule of EMI: Don't make noise.
#2 rule of EMI: Put the noise current back where it came from.
#3 rule of EMI: A little DC resistance can be your friend.

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