AC Input to DC Chargers

[ronlock]

Some of us may have an AC to 12vDC adaptor around that
is used for 12v  auto cooling/heating chests.

Ron Lockhart
----- Original Message -----
From: "Ted Sander" <tedsander at attbi.com>
To: <discussion at nsrca.org>
Sent: Saturday, February 15, 2003 10:20 AM
Subject: AC Input to DC Chargers


>
>
> Veering a little off thread about battery chargers, has anyone adapted a
PC
> power supply to feed any of these chargers on the bench?  Any cautions to
be
> aware of?  Seems like most chargers are made for 12V input - great at the
> field, not so handy on the bench unless you spring for the high priced
> add-on.  Obviously, we're talkin' enough input capacity for TX and RX
> batteries here, not mega-cell electric flight.  I've got two or three old
> dead PC's peeking out from under the workbench.....
> Going further, any advice on converting these power supplies to a
reasonably
> accurate variable output?  My TX lets me calibrate it's built in volt
meter,
> but you need stable, varying amounts of dc voltage to do it.  I'm tired of
> driving across town to borrow my friends regulated power supply, plus
having
> my own would come in handy for other projects.  (But not enough demand to
> justify buying one).  Any web resources about this?
>
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