Re: AT power supply

wmreinemer_at_tns.net
Date: 07/17/05 

Date: 17 Jul 2005 12:39:12 -0700

Baho Utot wrote:
> begin On Sat, 16 Jul 2005 12:58:43 -0500, Dances With Crows wrote:
>
> > On Sat, 16 Jul 2005 17:37:37 GMT, Baho Utot staggered into the Black Sun
> > and said:
> >> Does anyone remember how to connect the power switch for the 110vac to
> >> an AT power supply?
> >
> > AT power supply? Going seriously retro, man.
>
> It does go really well with the RedHat 5.0 and pentium 90 ;)
>
> >
> >> I have one with the following wire colors black,brown,white and blue.
> >> Which are the pairs to switch?
> >> Black/White Blue/Brown
> >> or
> >> Black/brown White/blue ?
> >
> > According to Scott Mueller's _Upgrading and Repairing PCs_ , 11th
> > edition, chapter 21, "As long as the blue and brown wires are on the one
> > set of tabs and the black and white leads are on the other, the switch
> > will work properly." There's a diagram which I can't reproduce in a
> > Usenet post, but the blue and brown tabs are on top and the black and
> > white tabs are on the bottom. In most paddle switches, the black tab is
> > horizontal while the white tab is shaped like a > . The blue and brown
> > tabs are usually vertical. HTH,
>
> Ok, thanks will give it a try.
>
> --
> Tayo'y Mga Pinoy
> The end
**
IAW:
http://www.quepublishing.com/articles/article.asp?p=31105&seqNum=4&rl=1

"CAUTION

At least two of the remote power switch leads to a remote mounted AC
power switch in an AT/LPX supply are energized with 115v AC current at
all times. You could be electrocuted if you touch the ends of these
wires with the power supply plugged in, even if the unit is turned off!
For this reason, always make sure the power supply is unplugged before
connecting or disconnecting the remote power switch or touching any of
the wires connected to it.

The four or five wires are color-coded as follows:

* Brown and blue. These wires are the live and neutral feed wires from
the 110v power cord to the power supply. These are always hot when the
power supply is plugged in.

* Black and white. These wires carry the AC feed from the switch back
to the power supply. These leads should be hot only when the power
supply is plugged in and the switch is turned on.

* Green or green with a yellow stripe. This is the ground lead. It
should be connected to the PC case and should help ground the power
supply to the case."

Walt R.
**

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