-48VDC supply for home lab?

Tue Feb 4 00:12:27 UTC 2014

I use:
http://www.mastechpowersupply.com/dc-power-supply/switching-power-supply/volteq-power-supply-hy5020ex-50v-20a-over-voltage-over-current-protection/prod_61.html

The output is changable from positive to negative ground by moving the 
shorting bar to ground from the - output to the + side.

If you need to be able to charge a 48v battery plant you'd want the 60v version
instead, but it's more $. The 50v one works fine for benchtesting equipment,
at least.

-Will

On Mon, Feb 03, 2014 at 02:02:11PM -0700, Mark Leonard wrote:
> Date: Mon, 3 Feb 2014 14:02:11 -0700
> Subject: -48VDC supply for home lab?
> From: Mark Leonard <mark at bernoullinetworks.com>
> To: "North American Network Operators' Group" <nanog at nanog.org>
> 
> Greetings NANOG'ers!
> 
> I have a small home lab which I mostly use for learning and testing.  I'm
> likely to receive some gear that needs negative 48VDC (ie: positive
> ground).  Mains is a typical 120VAC, 60Hz.
> 
> Can anyone recommend a power supply, reasonably priced, to go from 120VAC
> down to -48VDC at 10Amps?  Something that fits in a two post rack would be
> preferred, but not required.
> 
> Thanks,
> Mark