"James Sweet" wrote in message
news:5qgXg.5446$9Y1.687@trndny03...

You can get big 12V power packs for LV garden lights and halogen track
lighting is popular now, small switchmode converters are available to
run 12V halogen lamps, just don't try running non-resistive loads off
them, they put out a nasty waveform which only appears to be 12V to an
incandescent lamp.

Can you give a link to something like what you're talking about so I have a
better idea what to look for?