i need help to power up my old at power supplies without mobo

[dingdongdingdong]

i have good old at power suplies so i want to power up for using all my pc fan and other stuft so how can i do that. i know about atx power suplies wire 14 and ground are conect than it will be on but how about at one . which wire in p8 much conect to which wire in p9 any idea. please my me out thank in advance

 

[Bignate603]

i think virtualhideout.net had a "how to" on this a while ago.

 

[medic]

I believe they don't need a jumper, just turn them on with the switch. (AT style)

 

[DaddyG]

No jumper required BUT you may need 'load resistors' on the +5v for the supply to produce stable power.

 

[jamarno]

The power supply needs to have about 2-3 amps drawn from its +5V output, and this can be done by connecting a 2 ohm, 20 watt resistor between a red wire and a black wire of a power connector (even a disk drive connector will work). Radio Shack doesn't sell such resistors, but they do have 1 ohm, 10 watt resistors, and these can be tied in series, with one end of the first resistor to a red wire, one end of the other resistor to a black wire, and wrap the free ends of the resistors together. Despite the resistor(s) having a capacity of 20 watts, the 12.5 watts dissipated will make it/them quite hot, perhaps 150F.

 

[JackMDS]

Take a look

Here: http://www.burning-issues.co.uk/how_to/power/psu.htm

And then Here:http://www.overclockers.com/tips301/

 

[medic]

It really depends on the type of PS you have, I have a couple old AT linear style supplies that have a large internal transformer, similar to the common plugin wall type, these can be tested without load. Most modern supplies (AT & ATX) are based on the new switching mode design and use a high speed oscillator instead of the old transformer, which is much more efficient as well as smaller and cooler running than the old linear type.
Of the newer switching type, many higher quality units have built-in load resistors on the +5V and the +12V lines and nearly all of the newer ones have built-in protection circuitry which will shut them safely down in a no load condition. I have heard of real cheap no-names that don't have any safety circuitry and will fry without a load.
To be safe with a newer switching style AT supply always load it with an old MB to load the +5V and an old HD for the +12V load.

 

[dingdongdingdong]

my is make from senstron company ps case are all stainless still. on the top of the ps it said extra surge
here is the spec
MODEL: SQP-4304 SER.NO 24508390
AC INPUT:115/230~50/60HZ 6.3/3.1A
FUSE RATING: 6.3A/250
DC OUTPUT:300W
+5V 30A +12V A2A
-5V 0.5A -12V 0.5A
WELL I DID USE VERY THINE WIRE CONECT BETWEEN RED AND BLACK WIRE IT WORK UNTILL THE WIRE BURN OUT AND IT STOP. BUT WITHOUT CONECTED THAT TWO WIRE TOGETHER THAN IT POWER UP ONLY 2 SECOND BY ITSELT AND AUTO TURN OF. SO ANY MORE IDEA ABOUT THIS