FreeLists / si-list / [SI-LIST] Rubber Band Theory of Circuit Design

[Doug Smith <doug@xxxxxxxxxx>]

Hi All,

I put up my April 1st Technical Tidbit last week and an accompanying 
VIDEO net/podcast. It is:

Rubber Band Theory of Circuit Design
(explaining the effects of signal return paths with rubber bands)

Abstract: Having a simple way of explaining circuit operation can be 
helpful for a designer trying to explain to a boss or coworker why a 
board design must be done a certain way. A very simple example of 
using rubber bands to illustrate the effect of a ground plane break is 
discussed and related to other circuit constructions such as pigtail 
connection of cable shields. This article also serves as an index to 
five articles on this site that discuss the effects of crossing a 
signal path over a break in a ground plane.

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This month's Technical Tidbit discusses a simple way to think of 
signal paths on circuit boards using rubber bands. Using the rubber 
band analogy to signal currents, somewhat of a stretch, an engineer 
could probably get even a "bean counter" to understand circuit 
operation at some level.  This Technical Tidbit also serves to index 
the five Technical Tidbit articles on this site that discuss effects 
of signal paths that cross ground plane breaks.

The article is linked from the picture of a circuit board with rubber 
band paths at the bottom of the page at http://emcesd.com .

I have posted my first VIDEO pod/netcast at http://emcesd-podcast.com 
on this topic. Look at show #38 for April 1, 2007. This video and 
Technical Tidbit should give you a good laugh as well as being 
interesting.

Doug

-- 
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     ___          _       Doug Smith
      \          / )      P.O. Box 1457
       =========          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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