On Fri, Apr 8, 2011 at 5:52 AM, <alan.b.pearce@stfc.ac.uk> wrote:

>  There are some tricks to making a Peltier unit run most efficiently, lik=
e
> you need to supply them with a pure DC source. I have a tiny experience
> designing a switch mode converter to supply one, and ended up using a
> synchronous rectification to minimise the losses in the flyback diode of =
the
> buck regulator.
>
> If you don't supply them with pure Dc then you get heating effects on the
> cooling side of the Peltier.
>

I intend to supply it with a purely DC source. I'm going to take the power
straight from my +5 or +12 rail out of the computer's PSU, or a spare PSU I
have lying around. I love those PSUs. Lots of power, convenient voltage, ca=
n
be used for anything.
--=20
http://www.piclist.com PIC/SX FAQ & list archive
View/change your membership options at
http://mailman.mit.edu/mailman/listinfo/piclist
.