Polarity Reverser?

no problem...

you should try eagle cad for your schematics, it's faster and clearer than doing it by hand. If you're just starting out with it, you only really need three commands:
add to add components
net to connect them up, and
mov to move them around.

It makes very nice schematics. That said, there are some open-source ones around, but I haven't tried them.

D

PS the TIP 102 is perfect, that's what I meant to type.