FreeLists / si-list / [SI-LIST] Tuned Probe Simulator

[Doug Smith <doug@xxxxxxxxxx>]

Hi All,

Its that time of the month again and I have posted my latest technical 
tidbit on http://emcesd.com that discusses one way probing a signal 
can distort the signal as well. Ever have a circuit only work when a 
scope probe is connected? One possible answer is in the article.

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Abstract:  Probing can have significant effects on the signals being 
measured. One of these effects, resonance between probe input 
capacitance and lead inductance, can be simulated with a trimmer 
capacitor and its connecting leads. Such a "tuned probe simulator" can 
both provide insight on how probing affects signals and help 
troubleshoot circuit problems as well. Tuned probe simulators for 
passive and active probes are discussed.

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My next public course will be at UC Berkeley Extension in San 
Francisco in March. The link to the course is:

http://www.unex.berkeley.edu/eng/elec/313544.html

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
  \ _ /    ]    \ _ /          Web:     http://www.dsmith.org
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