Re: Convert ATX PSU to run on 192V DC rail

From: Tam/WB2TT (t-tammaru_at_c0mca$t.net)
Date: 06/11/04 

Date: Fri, 11 Jun 2004 19:21:02 -0400

"N. Thornton" <bigcat@meeow.co.uk> wrote in message
news:a7076635.0406111352.387234b7@posting.google.com...
> "Tam/WB2TT" <t-tammaru@c0mca$t.net> wrote in message
news:<UaWdnTCpP_TyJVTd4p2dnA@comcast.com>...
> > "N. Thornton" <bigcat@meeow.co.uk> wrote in message
> > news:a7076635.0406102342.2f7c3ac9@posting.google.com...
> > >
> > > so youre saying more or less all universal supplies should work on 192
> > IIUC.
> > >
> > > Regards, NT
> >
> > I am saying this is a marketing issue, not an engineering issue. Also,
for
> > multi voltage use, having to change a strap from bridge rectifier to
voltage
> > doubler is not the preferred way. Preferred by whom? depends on your
> > management and marketing types.
> >
> > Tam
>
>
> You still dont seem to addressing the simple question of whether a PC
> PSU is likely to work on 192dc. Thats the q here, marketing has
> nothing to do with that. Design optimisation is not marketing.
>
> Regards, NT

Well, if you have a supply built for 95 -135 VAC operation that does not
use a voltage doubler it should work. 135 x SQRT(2) =190, close enough. Now
the question is does the supply need AC for other reasons. When the PC goes
into standby the fan stops; I don't know for a fact, but suspect the main
supply also might shut down. Where does the keep alive voltage come from?

Tam

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