[sdiy] Welcome to the Twilight Zone

[David Cornutt]

On Apr 3, 2005, at 11:06 AM, Peter Grenader wrote:

>
> They are all running off the same supply.  However, in the name of 
> science
> and unparalleled universes, all of the effected controls do run 
> through the
> same op amp internally (they are summed).
>

Bizarre.  Some kind of op-amp latch-up behavior?  But then again,
I've never heard of an op amp reversing its output in this fashion.
And it survived across power cycles.

What is the op amp in question?