[sdiy] CV buffer

[Tim Parkhurst]

On 4/7/07, Tom Arnold <xyzzy at sysabend.org> wrote:
> I need to build a buffer so I can spread a single CV out to multiple
> destinations without cross pollination on the output side.  I'd just do a
> quick opamp buffer but I remember reading horror stories on this list of
> tiny errors being added.
>
> Any suggestions on a stable way to do this without adding noticable error?
>

Hmm, I would have thought a non-inverting follower built around a
decent op amp would be okay. If that's not good enough, how about
throwing in a few resistors and a trimmer. The only problem here is
that you need an inverting config (worst case, you might have to tweak
the trimmer and would want a gain range of just below 1 to just above
1), so now you need two op amps. Still, a dual amp package, a trimmer
and a handful of Rs isn't too bad.


Tim (signing off to go watch F1... go Ferrari!) Servo
-- 
"Imagination is more important than knowledge." - Albert Einstein