A question regarding power supplies

[daniel_28]

Hi guys; to cut a long story short I want to use the power supply from my old xbox to power a computer. Basically the xbox power supply has the right wires except for -5V and -12V which are needed to power the computer. So my question is, is there anything I can do about this? Something with the existing 3.3, 5, 12V and Ground wires maybe?

I apologise for my lack of knowledge here, I never learned electronics at school and I'm just starting now. I hope I provided enough information, if not I'll post some diagrams of what I'm talking about tomorrow. Cheers

 

[cameo_2007]

Nothing can be done.
whats xbox? whats the o/p power rating of that?
can confirm it if you can find out that.

 

[daniel_28]

Ah okay I thought that might be the case; I'm not sure exactly what you mean but I'll just post all the stuff the power supply has;

Max output power: 96W (though I think it's supposed to be a 200W power supply, dunno whether that's a contradiction.)

AC Input: 220-240V

DC Output: +5V, 13.2A;
+3.3V, 4.8A;
+12V, 1.2A;
+3.3VSB, 0.045A

Thanks

 

[cameo_2007]

If your PC is fitted with atleast up to three IDE devices (Hard drives and optical drives) along and a standard AGP card,along with a couple of standard cooling fans in the cabinet, a true 250-300 Watts SMPS is needed.
is 96watts too less to go with??
and moreover you need to mess up in generating negative supplies out of that too.

 

[jaya000]

It is not worth working on xbox powersupply. The computersmpsr available so cheap that if u try to modify it will be more expensive. Further is is more complicated to get - V from +v. So better buy a new or old computer smps. The old SMPS will be extremely cheap & just check the watts, working condition.

 

[hdrzaman]

it seems not possible.

 

[Kryptonite]

Modern desktop motherboards doesn't require the -5V connection to be in the PS. Modern PS doesn't have this connection at all (it's usually a white color that has number 20 for the 24-pin PS).

However, the -12 V is still required! A minimum of 300W are needed for most mother motherboards to boot.

All in all, i don't see how your xbox PS will operate a PC motherboard.

Why bother man!, PS's are very very cheap today!

 

[Meridian]

Hi guys; to cut a long story short I want to use the power supply from my old xbox to power a computer. Basically the xbox power supply has the right wires except for -5V and -12V which are needed to power the computer. So my question is, is there anything I can do about this? Something with the existing 3.3, 5, 12V and Ground wires maybe?

I apologise for my lack of knowledge here, I never learned electronics at school and I'm just starting now. I hope I provided enough information, if not I'll post some diagrams of what I'm talking about tomorrow. Cheers

It would be faster, cheaper, and more knowledgeable to go buy one for $15 bucks or less....

 

[maheshkuruganti]

I don't think you can use a Xbox PSU on a computer

 

[sriramachandra]

IMPOSSIBLE .... I think u have to design some sort of pcb to generate the reqd supplies, but if u ask me return on investment for that i would say nothing. So better buy a new one man, they are very cheap these days