On Tue, 12 Apr 2005 10:38:53 -0500, Cecil Moore
wrote:

converting series impedances
to parallel impedances and vice versa. I wanted to verify
my memory on those equations. I spent two hours trying to
find them on the web and never did.

Google: converting series impedances
second response points at:
http://www.cebik.com/trans/zcalc.html

2 minutes tops