[rescue] adding power redundancy to single power supply systems ?

Patrick Finnegan pat at computer-refuge.org
Mon Mar 24 10:33:18 CDT 2008

On Mon, Mar 24, 2008 at 11:31:10AM -0400, rescue at hawkmountain.net wrote:
> Did some searching... does anyone make a 'power strip' that takes two AC
> feeds, has some relays/capacitor magic/etc and can flop between a primary
> AC feed and a secondary AC feed to make single power supply systems take
> advantage of multiple colocation power feeds ?
> I never 'strike out' with this group...  hopefully this won't be the first
> time for it :-)

Yep, APC does, and they cost about $500 new.

I'm sure you could build one using just a single relay (with a 120V
coil) and the cut off ends from some power cords for about $10, maybe
$20 if you want a nice enclosure to put it in. :)

Purdue University ITAP/RCAC       --- http://www.rcac.purdue.edu/
The Computer Refuge               --- http://computer-refuge.org

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