Dale wrote...

>Maybe I'm just slow or theory-challenged, but I don't
>see how two resistors to two different sources would
>qualify as "parallel".

"Slow" you're definitely not; theory-challenged, perhaps.

For impedance-determining purposes the two halves of the pot do
indeed appear as if they were connected in parallel.

All this is related to a thing called Thevenin's Theorem:

http://hyperphysics.phy-astr.gsu.edu/hbase/electric/thevenin.html

DD

--
http://www.piclist.com hint: PICList Posts must start with ONE topic:
[PIC]:,[SX]:,[AVR]: ->uP ONLY! [EE]:,[OT]: ->Other [BUY]:,[AD]: ->Ads