FreeLists / si-list / [SI-LIST] Routing Signals Between PWB Layers

[Doug Smith <doug@xxxxxxxxxx>]

Hi All,

My article is a little late this month due to travel, but it is done 
now and many of you may find the data/discussion/audio file interesting.

A signal that passes through multiple layers, especially from the top 
layer to the bottom layer of a four layer board, can see significant 
impairment. An ESD example to illustrate the magnitude of the problem 
is given.

Abstract: Printed wiring board, PWB, signal paths must often change 
layers in a board stackup. Under some conditions this can cause 
problems. An ESD example is used to illustrate the conditions where 
changing layers can cause problems.

The link to the article is the drawing of a signal changing layers at 
the bottom of the home page at http://emcesd.com .

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

http://emcesd-podcast.com/2006/april/2006-0406.mp3

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

http://emcesd-podcast.com/2006/april/2006-0406.dcs

After download, change the extension from .dcs to .mp3 and the file 
will then be able to play on most computers.

There are many such discussions on my podcast site. I have enough 
bandwidth for about a quarter of a million downloads per month of my 
mp3 technical podcasts so feel free to browse the site and listen to 
anything you find useful.

Have a good month,

Doug

-- 
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     ___          _       Doug Smith
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       =========          Los Gatos, CA 95031-1457
    _ / \     / \ _       TEL/FAX: 408-356-4186/358-3799
  /  /\  \ ] /  /\  \     Mobile:  408-858-4528
|  q-----( )  |  o  |    Email:   doug@xxxxxxxxxx
  \ _ /    ]    \ _ /     Website: http://www.dsmith.org
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