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Old 07-06-2005, 07:50 PM
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CPU Cooling Fan Wiring

Can anyone tell me how to wire a cpu cooling fan? Three wires.....

yellow
red
black


Thanks
-Allen
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Old 07-06-2005, 08:01 PM
 
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red is to the 12v wire black is to the ground.

yellow is the rpm wire only used if you plug it into the board.
most the time
-----------------------------------------
yellow on the power supply is 12volt ,black is ground. red is 5



so red (fan)to yellow-black to black.

I would use the wires used for harddrives/floppys. Stay away from the main board wires. you dont want to add noise.
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Old 07-06-2005, 08:08 PM
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Wow!! Got to love this site, superfast response to your questions. Thanks sendkeys, I do appreciate it!!


-Allen
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Old 07-06-2005, 08:11 PM
 
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np happy to help when i can.
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Old 07-07-2005, 06:33 PM
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If you intend using the Fan in your Power Supply, give a thought to connecting it across your smoothing Capacitors, (dropping the Voltage with a Regulator if needed), as this assists in bleeding the Voltage from them on shutdown. A nice safe 'Zero Volts' remain, the next time that you open the PSU Case.
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Old 07-07-2005, 10:19 PM
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I was planning to but thanks for the information...


-Allen
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