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Old 04-21-2009, 04:12 PM
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dmccormick001
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Default RE: How to convert an ATX power supply to rc use


ORIGINAL: eszaqsc
So I can get more at +12 volt line by making all of them paralel? (4x i ohm 10 watt in paralel)
Theoretically, yes, because the result would be the equivalent of a 1/4 ohm 10 watt resistor, which would push the voltage up on all the rails slightly more than what you have now, but only by probably a few hundredths of a volt, and the resistor would likely get too hot and fail.

The arrangement you have of resistors now is going to load the 5 volt rail about as much as you can load it, which will push the voltages up on all the rails, including the 12 volt rail, to just about their max. If you can't get as much as you need out of it with what you have, I'm afraid you may need to look for another source for whatever you're trying to power. Without major modifications, at 12.10 volts, it's giving you all it's got.

David