[SI-LIST] Locating "hot" grounds

  • From: Doug Smith <doug@xxxxxxxxxx>
  • To: SI-List <si-list@xxxxxxxxxxxxx>, emc-pstc <emc-pstc@xxxxxxxx>
  • Date: Tue, 01 Aug 2006 15:55:05 -0700

I have been writing and recording again, this time on finding "hot" 
grounds in a system.

Abstract: An area of a circuit board or system that has significant 
noise present on ground can often drive common mode currents on cables 
or other structures causing excessive emissions. A simple technique is 
described to identify areas of a circuit board or system that are at 
risk for emissions problems.

The link to the article is the picture of the experimental test setup 
at the bottom of the home page at http://emcesd.com . Or just click on 
this link:


There is also an audio discussion of this article on my podcast site: 
http://emcesd-podcast.com where the direct link to the audio file is:


Can't download mp3 files? Download the following instead:


After download, change the extension from .dcs to .mp3 and the file 
will then be able to play on most computers. Since the last HFNews 
there have been two new podcasts posted.


     ___          _       Doug Smith
      \          / )      P.O. Box 1457
       =========          Los Gatos, CA 95031-1457
    _ / \     / \ _       TEL/FAX: 408-356-4186/358-3799
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