Works good on G5 Dual 1.8GHz PPC Mac.
Clean and simple app & GUI. Could use some input info, for the series-parallel section, though easy enough to figure out by clicking around...
Great beta, great price, and useful tool.
-BTW; I changed it's name to 'PowerCalc', so I can know what is in my >Applications>OtherApps folder.
It had no problem with that...another big plus for this app, and developer!