[SI-LIST] Re: Decoupling capacitors
- From: John Barnes <jrbarnes@xxxxxxxxx>
- To: joepaul@xxxxxxxxxxx, si-list@xxxxxxxxxxxxx
- Date: Mon, 16 May 2005 11:03:48 -0400
Joe Paul,
If you have access to:
* An oscilloscope,
* A pulse generator,
* A coaxial cable with female BNC connectors on both ends,
* One BNC barrel connector,
AND
* One 51-ohm 1/4W carbon-composition resistor,
you can make reasonable-accurate measurements of the equivalent-series
inductance (ESL) and the equivalent-series resistance (ESR) of
capacitors. Just use Doug Smith's test setup described on his web page
Measuring Capacitor Self-inductance and ESR, at
http://www.emcesd.com/tt020100.htm
Doug has a wealth of useful techniques like this one on his web site
http://www.emcesd.com/
to supplement his book High Frequency Measurements and Noise in
Electronic Circuits (New York: Van Nostrand Reinhold, 1993).
In my opinion, Doug's book is THE BEST single source of information on
making high-frequency measurements, out of over 2,800 books on
electronics (16 bookcases) in my personal library. You can buy the book
directly from Doug at
http://www.emcesd.com/indxinfo.htm
With Doug's permission, and giving all due credit to him on page 42-2, I
based most of Chapter 42, Lab Tests, in my Book Robust Electronic Design
Reference Book, Volume 1, on measurement techniques that Doug has
devised and published. (http://www.dbicorporation.com/book-out.htm)
John Barnes KS4GL, PE, NCE, ESDC Eng, PSE, SM IEEE
dBi Corporation
http://www.dbicorporation.com/
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