Running a 220v computer in a 110v environment

From: Ram Meenakshisundaram <rmeenaks_at_olf.com>
Date: Thu Oct 7 13:12:34 1999

Christian Fandt wrote:

> If there are no input voltage selector switches hidden inside on the PSU
> and you are reluctant to use a transformer then there's no way to run it
> directly from 115V mains.

I havent opened it up or even given a good look at it. It is pretty funny
looking though. It has 16 T805-30Mhz transputers with 4Megs per node in it.
The thing gets pretty hot, so the sides of the chasis has two big heat sinks.
Take a look at this picture:



> This could be for an air conditioner as the larger A/C's are usually 220V
> units. Just check with your landlord. If for sure a 220 outlet for A/C then
> first determine if the input to the PSU is fused (a fuse is A Good Thing).
> Next, have an electrician friend get a correct connector and _correctly_
> wire it up and you're good to go. If there is no fuse protection in the PSU
> perhaps your electrician friend could devise an NEC-correct box to fit
> between the outlet and the PSU. Safety is A Good Thing especially to
> prevent damage to the unit and minor things like fires, your death, etc.
>
> Another thing to consider is whether the PSU will run well on the North
> American 60 Hz line frequency instead of the 50 Hz used in most of the rest
> of the planet. If the AC input rating label says something like '220 V,
> 50/60 Hz' or suchlike, then you're okay. You see, if the PSU is
> transformer-based (not a switching PSU like you see on all PeeCees) then
> there _may_ be a dependancy upon 50 Hz only as the tranny was possibly
> designed just for 50 Hz. If the company's designers were considerate of the
> unit running in other parts of the earth, then they could have specified a
> 50/60 Hz tranny. You should check this.
>

Hmmm, that is what I thought. I still feel a bit uncomfortable trying to hook
it up to the A/C socket. I really dont want to damage it. It is very very
difficult to get this type of equipment. I basically didnt want to have a
huge transformer sitting on the floor. Maybe, I might as well go and invest
on a good transformer.

Ram

--
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|                        Ram Meenakshisundaram
|                        Senior Software Engineer
|                        OpenLink Financial Inc
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|  (   )   Oooo.         Email: rmeenaks_at_olf.com
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Received on Thu Oct 07 1999 - 13:12:34 BST

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