Re: Power over ethernet and ePODs

["drownedrat" <fluff@xxxxxxx>]

I've got a small heap of DEMPRs I'm hoping to adapt for PoE old rack 
mount 8 port thin ethernet repeaters.

They allegedly have high grade PSU & front panel has holes (currently
occupied, but hopefully modable.

I'll pull one apart at some point & check the output, see if any 
good, as could probably be persuaded to part with one or two

Got them as rackmount cases ( 2 or 3U, about 9" deep) for some 
project or other (some have rack ears) got pissed off when I measued 
them & were only 17". Then realised 19" was the outer width
of the 
rack (never measured kit before, but they looked small piled up on my 
drive!) Felt a tad foolish.

A.

--- In ukha_d@y..., "graham_howe" <graham@s...> wrote:

> > See http://www.nycwireless.net/poe/
> > 
> This is very interesting, thanks. It really does seem to be as easy
> as I thought!
> 
> So the only remaining question is about the power supply itself. 
> Obviously I don't really want to have 5 power supplies at node zero
> for the 5 ePODs and anyway I doubt very much that the ones supplied
> with the ePODs would be sufficient over a 50m run. So what I really
> need is a big power supply that can support 5 ePODs concurrently 
> (hence bigger current draw) and can supply adequate voltage over 
50m 
> of cable (hence higher voltage to allow for drop).
> 
> Does anyone have an idea where I might get a suitable PSU and also
> could anyone with the elecronics knowledge tell me what spec I 
should 
> be looking for (I assume it all comes down to Ohms Law, but I 
> wouldn't trust myself to do the calculations).
> 
> Regards
> 
> Graham

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