[MLB-WIRELESS] Solar power modelling
Ben Anderson
a_neb at optushome.com.au
Thu Apr 3 16:00:41 EST 2003
Still talking over a thousand dollars for the power system...
Ben.
> > > > From memory, Vak did this. They draw around 400mA I think.
> > >
> > > At what voltage?
> > >
> > > P = V x I
> > >
> >
> > Sorry, at their default voltage: 5V.
>
> Hmm, that's only 2W. If you're going to use a 12V solar system, I'd
> strongly recommend using a switchmode regulator to bring the voltage down.
> That would probably save 50% power, compared to a linear regulator which
> would dissipate (i.e. waste) at least 7/12's of the supplied power as
heat.
> A switchmode regulator should be 80-90% efficient.
>
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