> Hrmm...  not sure I'm with you on that one.  With the wiper centered, your
> input would still see 20K Ohms to either source.  Maybe I'm just slow or
> theory-challenged, but I don't see how two resistors to two different
> sources would qualify as "parallel".  I could be wrong though, here I am
> posting from work again, which results in my being wrong about 3 out of 4
> times it seems.
>
> Dale

Here is a rough analogy to help you out....

Think of the two halves of the pot as compression springs, with spring
tension inversly proportional to resistance.

Now the way that they resist motion of the point at which they connect is
certainly dependent on both of them.

Bob Ammerman
RAm Systems

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