Magazine Article

[patchell]

    I am still looking for the magazine article I promised to post
tonight....*sigh*...I only had it in my grubby little fingers only about
a month ago.  However, I did find another article I was looking for.  It
is from Electronic Design, Sept 13, 1976, "Use transconductance
amplifiers to make programable active filters."

    This article had a big impact on me when I first read it.  I based a
lot of my DIY projects on this article.  The OTA's were made from CA3096
transistor arrays.  Check out the somewhat odd way the exponential
converter was made.

http://www.silcom.com/~patchell/temp/ota_1.gif
http://www.silcom.com/~patchell/temp/ota_2.gif
http://www.silcom.com/~patchell/temp/ota_3.gif
http://www.silcom.com/~patchell/temp/ota_4.gif

Hope I spelt those URL's correctly.  The article was by Dr. Sergio
Franco.

    I will keep looking for that other article......

--
 -Jim
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