Minimum Parts VCO was VCO-1C

Arthur Harrison theremin1 at worldnet.att.net
Tue Jan 5 05:46:29 CET 1999


Re:  http://www.mindspring.com/~vco/misc/pics/vco6a_sd.gif
I'd be somewhat concerned about the tempco of 13600's trasconductance.

-Art

-----Original Message-----
From: tomg <vco at mindspring.com>
To: jhaible <jhaible at metronet.de>; synth-diy at mailhost.bpa.nl
<synth-diy at mailhost.bpa.nl>
Date: Monday, January 04, 1999 12:41 AM
Subject: Minimum Parts VCO was VCO-1C


>
>
>I never posted this because I didn't finish testing
>it completely. If you don't look at the waveforms
>it sounds like a saw but they look like a bad tri.
>
>If you get rid of the exp-conv's it leaves 1/2 a
>13600 one cap 2 diodes and 4 resistors. Reduces
>the cost to about $.70 per key. May be just what
>you want...might not be though.
>
>
>http://www.mindspring.com/~vco/misc/pics/vco6a_sd.gif
>
>-tg
>
>
>




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