oct/V to Hz/V converter - a schematic!

[Haible Juergen]

> I have used TL082's, but do feel free to make a better 
> >pick.
> >Also, here I use MAT-02's and a tempco resistor. I'd love a discussion on
> 
> >how
> >to improve this. Yes, there have allready flown alot of discussion under 
> >these
> >bridges, but often they have refered to schematics all over the place...
> >
> >http://home.swipnet.se/cfmd/synths/schematics/
> 
Hi Magnus,

U3A should be a low offset opamp like the OP-07.
(The MS-20 used a cheap single opamp plus external
trimpot, if memory serves.)
Low offset is important for precise low frequency tracking.

JH.