DanTheGamer11 Posted April 26, 2011 Posted April 26, 2011 (edited) Hiya guys just wanna use my 400w/350w psu to power a couple of fans without a mobo, i heard something about cutting the green wire and a black wire and sticking em together with some tape... gonna do this so i can put my fairly loud xbox into a closet or a cardboard box so it won't be as load as now...stupid fans too loud... the cable you apparantly cut is the 20 pin atx but mine has 24 Edited April 26, 2011 by Dan The Gamer Quote Share this post Link to post Share on other sites More sharing options...
TropicalPreist Posted April 26, 2011 Posted April 26, 2011 (edited) Hiya guys just wanna use my 400w/350w psu to power a couple of fans without a mobo, i heard something about cutting the green wire and a black wire and sticking em together with some tape... gonna do this so i can put my fairly loud xbox into a closet or a cardboard box so it won't be as load as now...stupid fans too loud... the cable you apparantly cut is the 20 pin atx but mine has 24 you don't need to cut wires if you don't want to. Get a paper clip and insert one end into the single green wire slot. The other end stick into any of the black wire slots(these are grounds). This emulates the power on signal from the mobo to the psu. -Trop Edited April 26, 2011 by TropicalPreist Quote Share this post Link to post Share on other sites More sharing options...
DanTheGamer11 Posted April 26, 2011 Posted April 26, 2011 (edited) you don't need to cut wires if you don't want to. Get a paper clip and insert one end into the single green wire slot. The other end stick into any of the black wire slots(these are grounds). This emulates the power on signal from the mobo to the psu. -Trop so will this work with a psu with no switch? do i just have to apply a load? Thanks for quick response matE! wow i just searched and found out i have no paper clip any household alternativeS? could i use a copper wire thats insulated instead? Edited April 26, 2011 by Dan The Gamer Quote Share this post Link to post Share on other sites More sharing options...
oh_fubar Posted April 26, 2011 Posted April 26, 2011 yup but make sure the PSU isn't pluged in when you insert the wire Quote Share this post Link to post Share on other sites More sharing options...
DanTheGamer11 Posted April 26, 2011 Posted April 26, 2011 yup but make sure the PSU isn't pluged in when you insert the wire http://www.google.com/search?tbm=isch&hl=en&source=hp&biw=1600&bih=799&q=man+getting+electrocuted&gbv=2&aq=0&aqi=g2g-m2&aql=&oq=mAN+GETTING+ELE ? Quote Share this post Link to post Share on other sites More sharing options...
bigball1 Posted April 26, 2011 Posted April 26, 2011 Yes you need to load the PSU with a few fans Quote Share this post Link to post Share on other sites More sharing options...
GabrielT Posted April 26, 2011 Posted April 26, 2011 yup but make sure the PSU isn't pluged in when you insert the wire Eh, 12v is as safe as it gets. I have done it countless times and I haven't even come close to getting a zap. If you want to get fancy you could hoot the wires together via toggle switch. Quote Share this post Link to post Share on other sites More sharing options...
sticknstone Posted April 26, 2011 Posted April 26, 2011 Electrical shock is from current going through the body not the voltage. Use any conductive wire available just make sure to tape it to insulate it to protect yourself and the components. Tape it to ensure the jumper does not come loose too. I use the ATX power supply to test different fan setups and I shut off the power switch then jumper pin 7 blk gnd and pin 8 green power good next connect the components and put the switch on. The AT power supply (does not have a switch) will need a jumper on the blk and brn and then another on the wht and blue of the blk cable with these four coloured wires only. With this ps make sure to disconnect the power cord when making all connections. Quote Share this post Link to post Share on other sites More sharing options...
paulktreg Posted April 26, 2011 Posted April 26, 2011 Low voltage DC electric shocks often go unnoticed or worst case cause a slight tingling. To cause any real damage, upset the heart rhythm for example, you need about 0.5A of DC current to flow (about 0.05A for AC I think) and 12V just ain't going to be enough. I test power supplies all the time and touch the rails often and don't even feel it. The impedance of the human body varies with voltage but taking a not unreasonable figure of 2K ohm it would need (V=IR) 0.5 x 2000=1000VDC to cause 0.5A to flow. I've generalized here a little but as you can see 12VDC is totally harmless. Quote Share this post Link to post Share on other sites More sharing options...
DanTheGamer11 Posted April 27, 2011 Posted April 27, 2011 thanks guys for the help! used some copper wire thats insulated so i stripped around 1cm off and put it into the 'lil metal thing but i didn't have electrical tape so i just used normal and put both ends at a bigger distance so it doesn't spark it's pretty nice to know these things and the weather just got hot! Thanks all and maybe somebody else might look here for help! Quote Share this post Link to post Share on other sites More sharing options...
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