[Wolves] Silly question maybe...

[Kevanf1]

On 5/17/05, Wayne Morris <wayne at machx.co.uk> wrote:
> Kevanf1 wrote:
> 
> >On 5/17/05, Wayne Morris <wayne at machx.co.uk> wrote:
> >
> >
> >
> >>Your biggest problem with a separate enclosure for PSU would be voltage
> >>drop between the PSU and the computer,
> >>you would need quite thick cables to provide the power without too much
> >>loss in the cables.
> >>More to the point, the PSU has a 5v detection circuit that shuts it down
> >>if it doesn't detect 5V at the board via return wire,
> >>a drop of .5v can be enough to trigger this AFAIK.
> >>
> >>
> >>
> >
> >It would be a simple matter to extend the wiring to the motherboard
> >and have it in an enclosed sheeth.  It would be a case of keeping the
> >PSU near enough so that resistance didn't cause too much of a drop.  I
> >wouldn't have thought the resistance would be that much in even say a
> >foot of cable?
> >
> >
> >
> Ahh, I thought you were planning having the PSU in the next room!
> Surely you will just be moving the noise one foot to the left?
> 
> Found this for resistance:
> 
> http://www.nooutage.com/vdrop.htm
> 
> which shows following drops at 12v and 10 amps
> 
> 1 ft  - 0.5%
> 10ft  - 5%
> 
> based on the minimum cable diameter they offer (15A).
> 
> Not sure what PSU cable would be, guessing 15A or less so up those
> figures a bit.
> 
> But even so, voltage drop insignificant at 1 foot.
> 
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> 
What I would like to do is take out the fans from a PSU.  Then move
the PSU out of the PC box itself because of the heat.  I have an old
PSU and I might just take out the fans and run it to see how long it
lasts...

-- 
Take care.
Kevan Farmer

34 Hill Street
Cheslyn Hay
Staffordshire
WS6 7HR