[168728] in North American Network Operators' Group
Re: -48VDC supply for home lab?
daemon@ATHENA.MIT.EDU (Will Orton)
Mon Feb 3 19:12:51 2014
Date: Mon, 3 Feb 2014 16:12:27 -0800
From: Will Orton <will@loopfree.net>
To: North American Network Operators' Group <nanog@nanog.org>
In-Reply-To: <CANP5tB1x9pHm5ZBBrzrr3kYJ2aA_bdCtwvtjAn4s-UFuJ2Gy2g@mail.gmail.com>
Errors-To: nanog-bounces+nanog.discuss=bloom-picayune.mit.edu@nanog.org
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@bernoullinetworks.com>
> To: "North American Network Operators' Group" <nanog@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@10Amps? Something that fits in a two post rack would be
> preferred, but not required.
>
> Thanks,
> Mark
