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Fan effect vs fancontroller.

post #1 of 3
Thread Starter 
Hia:)
Im trying to calculate some effects on my fans, and was wondering if im on the right track. The SP120 is listed with 0.18A @ 12v, witch would give 2.16W. My fan controller can take 30W/Channel. Here comes what im uncertain of, does this mean i can do 10-15 fans/channel? Seems alot.. Would i put fans in serial or paralell?

thx smile.gif
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post #2 of 3
First and foremost I personally would not risk running that many fans on a single fan controller panel. For starters, that is the running current, not the startup current, which can be 2-3x higher. If you have 15 fans running on a single thirty watt channel and each one has a running current of .17A, at startup the entire cluster of fans would be drawing nearly 100W as they all simultaneously spun up to running speed.
Hard drives tend to do the same thing: Draw much more power as they spin their mass up to running speed.

If you are going to run a cluster of fans on your fan controller, limit it to 5-6 fans per channel. For example, the 6 fans on your radiator would get one channel, while say, the front fans run on their own channel, and at the same time the HDD fans are on their own channel.

See where i am going with this? Instead of running EVERYTHING off a single channel, you split the fans up according to their useage. Not only does this not put undue strain on the controller circuits, but it also allows you to tweak the cooling of each section of your case as desired, so the radiator can have the fans run at higher speeds while the normal case and drive fans run at slower speeds.
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post #3 of 3
Thread Starter 
Thx for good answer mate. I wasnt aware of the startup peak in voltage. Was not my intention to run that many fans on 1 chanell XD But i got my answer 2-3 / chanell should be no prob.

thx again:)
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ASUS DRW-24B5ST EK-Supremacy(Copper/Acetal) EK-Coolstream RAD XT 360 EK-Coolstream RAD XTC 140 
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Laing DDC-1T plus EK-RES X3 150 Corsair SP120 Corsair AF120 
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Corsair AF140 EK-WB FC-Titan EK-WB FC-Titan Win7 64 
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