Mitch Miller wrote:

> > > > I want to make a small UPS, one that would be able to run my
> > > > PC for a little while if the power failed (enough so it can
> > > > shutdown it self down properly).
> >
> >
> > I'd try something a little different, use 3x 6v
> > gell batteries, I think 18v is about right, then
> > 2 simple smps buck regulators to give 12v and 5v
> > at the decent amps. Maybe you could run 12v battery
> > and no/minimal 12v regulation?

> > But what about the monitor?
>
> Use a small 100va 12vdc->120vac inverter and power it right from the
> battery supply.

Hmm, it still bugs me that the PC requires
mainly +5v and +12v dc, and having to use an
inverter to go from battery to AC then back
to DC in the PC PSU. And most TVs and monitors
have a main 110vdc rail that supplies the
whole device, i've often wondered about solar
systems etc that have a high voltage DC rail.
It can be very handy haveing a 120v dc battery
system...
-Roman

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