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powersupply/fan question; help plz

post #1 of 8
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1nd question; if I were to rig my power supply to start without a motherboard..can I hook up fans to it; and still have the correct wattage?

2nd question...if im looking at the back of my computer and I see the red switch on my powersupply. the numbers read something like 210 (aiming down aka bottom numbers) and the other says 115 or something (is the top #s)...if I put the switch down; it's more power..right?
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post #2 of 8
NEVER power up a power supply without something hooked up to it.

NEVER set the live voltage selector to anything except the actual line voltage to which the power supply is connected.

You sound dangerous. I'd advise staying away from electrical experimentation until you gain at least a little more knowlrdge.
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post #3 of 8
per question 2: It's not a performance option; it corresponds to the standard socket voltage in your region. Use 115 if you live in the U.S. Otherwise, research the standard wall voltage in your area. Choosing the wrong one is bad. Bad. You can hotwire a psu to run on its own (jumping the green wire to a black ground, often with a paper clip held in with electrical tape). It seems fairly common practice to test fans, etc. Can't vouch for the safety of it so proceed at your own risk. Generally that sort of thing is done with a spare psu.
    
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post #4 of 8
flick that red switch and i guarantee you'll have a nice fireworks display on your hands, coupled with a dead PSU and/or dead PC components.
post #5 of 8
Do NOT change the switch on the back of your PSU kookoo.gif:
 
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Thuban Powah!
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post #6 of 8
Quote:
Originally Posted by Schmuckley View Post

Do NOT change the switch on the back of your PSU kookoo.gif:

agree biggrin.gif
post #7 of 8
Quote:
Originally Posted by Thingamajig View Post

flick that red switch and i guarantee you'll have a nice fireworks display on your hands, coupled with a dead PSU and/or dead PC components.
^This
Seems like someone didn't do their homework on their components.
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post #8 of 8

OP -- sounds like you have a budget PSU, or an old one.

 

You are asking this question in the air cooling section; you might ask this question in the psu section.

 

Probably setting the switch to 220-240v will just under-power your psu. Leave it at 110 if you live in the US. If you have 220v, do NOT set it to 110.

 

I run a 750W PSU without a motherboard nearly daily to test fans and other components. I even bought a device to make it easier and to go easy on my 24-lead plug. Your psu will then supply all the proper Voltages.

alpha updated
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secundus
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alpha updated
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secundus
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