[sdiy] More VCO fun

Ian Fritz ijfritz at comcast.net
Thu Dec 3 16:24:55 CET 2009


At 12:58 AM 12/3/2009, David G. Dixon wrote:
>...
>Concerning the JFET temperature sensitivity (which caused the pitch to
>increase by several semitones upon touching the JFET with my fingertip),
>this really had me stymied, since my other circuits don't show this
>sensitivity. ............

>Has anyone else here ever observed these problems with
>JFET reset time constants in sawcore VCOs?

Yes:
http://home.comcast.net/~ijfritz/sy_cir2.htm
Fifth paragraph.

Ian 



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