Anyone know how to turn on an ATX power supply

W

www.ChantCd.com

Guest
Without a motherboard, and the switch plugged into it, how do you activate
an ATX power supply? There is no switch on the back of it like in the good
old AT-style power supply days.

There must be a couple wires that need to be set high (or low) or something.

According to this, it's the green wire. How do I set it "active low"?
http://www.hardwarebook.net/connector/power/atxpower.html

Thank you,

Matthew McDevitt
 
"www.ChantCd.com" <hormel77@hotmail.com> schreef in bericht
news:16EJc.82623$JR4.67534@attbi_s54...
Without a motherboard, and the switch plugged into it, how do you activate
an ATX power supply? There is no switch on the back of it like in the
good
old AT-style power supply days.

There must be a couple wires that need to be set high (or low) or
something.

According to this, it's the green wire. How do I set it "active low"?
http://www.hardwarebook.net/connector/power/atxpower.html

Thank you,

Matthew McDevitt
Click to expand...
"Active low" means "Pull low to activate" (the power supply in this
situation.) So the PS will switch on when you connect the green wire to
ground.

Which does not mean it functions as you wish. A lot of power supplies need a
minimal load to perform well.

petrus bitbyter


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"www.ChantCd.com" <hormel77@hotmail.com> wrote in message
news:16EJc.82623$JR4.67534@attbi_s54...
Without a motherboard, and the switch plugged into it, how do you activate
an ATX power supply? There is no switch on the back of it like in the
good
old AT-style power supply days.

There must be a couple wires that need to be set high (or low) or
something.

According to this, it's the green wire. How do I set it "active low"?
http://www.hardwarebook.net/connector/power/atxpower.html

Thank you,

Matthew McDevitt
Click to expand...

If I'm not mistaken *active low* on the page you cited means you connect the
pin to ground to turn on the ATX power supply.

Also, I beleive they're *switching* power supplies, so you'll need a load.

HTH
Chris
 
Here is what you need:
http://www.cyberguys.com/templates/searchdetail.asp?T1=113+0282

--
Guy Macon, Electronics Engineer & Project Manager for hire.
Remember Doc Brown from the _Back to the Future_ movies? Do you
have an "impossible" engineering project that only someone like
Doc Brown can solve? My resume is at http://www.guymacon.com/
 
What would be the purpose of having the PS on without motherboard
other than to test it?

"www.ChantCd.com" <hormel77@hotmail.com> wrote in message news:<16EJc.82623$JR4.67534@attbi_s54>...
Without a motherboard, and the switch plugged into it, how do you activate
an ATX power supply? There is no switch on the back of it like in the good
old AT-style power supply days.

There must be a couple wires that need to be set high (or low) or something.

According to this, it's the green wire. How do I set it "active low"?
http://www.hardwarebook.net/connector/power/atxpower.html

Thank you,

Matthew McDevitt
Click to expand...
 
On Mon, 26 Jul 2004 21:18:07 -0700, Dave wrote:

What would be the purpose of having the PS on without motherboard
other than to test it?
Click to expand...
Perhaps because it is a damned cheap high current power supply?

BTW, top-posting sucks.

--
Keith
 
Just connect the pin 14 (Pson) to ground. (Ground is the
two blacks)
on the motherboard connector.
This will start the supply. Look on google for ATX
connector to find the
connector layout on hardwarebook.net.

KGF



"www.ChantCd.com" wrote:
Without a motherboard, and the switch plugged into it, how do you activate
an ATX power supply? There is no switch on the back of it like in the good
old AT-style power supply days.

There must be a couple wires that need to be set high (or low) or something.

According to this, it's the green wire. How do I set it "active low"?
http://www.hardwarebook.net/connector/power/atxpower.html

Thank you,

Matthew McDevitt
Click to expand...
 
As far as a load, how about a surpluss hard drive that many have laying
around. Puts a load on the 12 & 5 volt lines and allows you to check the
other voltages for nominal.
"Kgf" <kgf@surfmail.dk> wrote in message
news:411E7B3B.184DDB32@surfmail.dk...
Just connect the pin 14 (Pson) to ground. (Ground is the
two blacks)
on the motherboard connector.
This will start the supply. Look on google for ATX
connector to find the
connector layout on hardwarebook.net.

KGF



"www.ChantCd.com" wrote:

Without a motherboard, and the switch plugged into it, how do you
activate
an ATX power supply? There is no switch on the back of it like in the
good
old AT-style power supply days.

There must be a couple wires that need to be set high (or low) or
something.

According to this, it's the green wire. How do I set it "active low"?
http://www.hardwarebook.net/connector/power/atxpower.html

Thank you,

Matthew McDevitt
Click to expand...
 
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