-48VDC supply for home lab?

Will Orton will at loopfree.net
Tue Feb 4 00:12:27 UTC 2014

I use:

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.


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

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