<VV> Inverter

[Padgett]

>  You could probably do the same thing with a store-bought inverter, but 
> it would cost a lot more and be plagued with circuit breakers because the 
> average bozo who buy 'em figures he can just plug in his sump pump and 
> worry no more.

If all you need is a 1/2 amp, a Jackson is cheap. I doubt that I could 
build one for that and would not be as pretty.
http://www.harborfreight.com/cpi/ctaf/displayitem.taf?Itemnumber=93095

Padgett