alt.energy.homepower

Per You:
>Input Switching Dc/Dc Converter

Googling, I see a lot *about* them, but nothing for sale yet.

I'll keep looking though.

Sounds like the way to go, though since the Wikipedia article
cites "80-98%" efficiency and, presumably, the linear converters
are a lower efficiency as they dump the excess into heat.

I thought I had a heat issue with the inverter - but I just
realized that the one I ordered will handle 25 amps... so I'm
betting my dinky little half amp is barely going to warm it up.
--
PeteCresswell