[Noisebridge-discuss] N00b question - changing power supply voltage

[Sean Cusack]

Awesome - thanks guys!

I'm going to try to use this guy to power a peltier cooler (I've got a sweet
idea here depending on how well I can get this doo-hickey to work). It takes
12V at up to 9A, but from the reading I've been doing, it looks like you
want to stay away from the top value of amperage anyways. I'll give it a
spin with just the 4.5A first to see how it works.

Based on what I'm seeing below, if I use 2 voltage regulators in parallel,
it looks like that should handle the current without a problem. I can
totally drop in a cap after the fact to smooth out the current. Ryan - I'm
considering doing an ATX PSU mod too...I've got an extra one laying around.

Sean

On Thu, Jul 1, 2010 at 5:05 PM, Ryan Castellucci <ryan.castellucci at gmail.com
> wrote:

> How much current are you drawing?  TBH, you should really just go to
> weird stuff and pick one up for a few dollars.  Another option would
> be converting an ATX power supply to a bench supply.
>
> On Thu, Jul 1, 2010 at 1:57 PM, Sean Cusack <sean.p.cusack at gmail.com>
> wrote:
> > Hey kids -
> >
> > So, I've got a relatively simple dilemma that I sure pops up all the time
> > for those of you that are way better at electronics than me. I've got a
> > power supply providing a fixed 24V @ 4.5A, but I only want to use 12V of
> > that for my circuit. I originally thought I could lower the voltage using
> a
> > potentiometer, but because the power is so high, they all cost some
> serious
> > bank. Is there another (not necessarily analog) solution to changing
> voltage
> > and/or amperage through a circuit that is cheap to build?
> >
> > Sorry if this one is likely obvious - but everyone can blame Mitch for
> > getting me way to into electronics for my own good :).
> >
> > Sean
> >
> > _______________________________________________
> > Noisebridge-discuss mailing list
> > Noisebridge-discuss at lists.noisebridge.net
> > https://www.noisebridge.net/mailman/listinfo/noisebridge-discuss
> >
> >
>
>
>
> --
> Ryan Castellucci http://ryanc.org/
>
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