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Reducing volts for delta fans

post #1 of 8
Thread Starter 
So i got three of the 120mm ones, three things happened when I fired them up, first a jet engine spooled up inside my computer, I mean literally spooled up it was crazy sounding. second all the things on my desk went flying off soda cans and all, third they pulled are so hard and so fast out of my case it stalled out all the three other exhaust fans in my case literally stalled them out and caused my one 140mm intake to go ape ****, did I mention that I literally could not hear inside my room the we're so Damn loud, not to thread jack but is there a way to splice in a resistor or something to lower the voltage from like 12 to 6-5....i mean I love the 7500 rpm spinning death dealing jet planes but I would prefer a little less lol. I basically would like to keep them and reduce the voltage to see if I can still use them or order three new fans.
    
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post #2 of 8
Heh, yeah there are resistors

Things like this. Though you can get molex ones too. They are all pretty cheap.

Though if you have it hooked up to your mother board it might have a fan controller built in. Most decent motherboards have them

Though $20 can get you a decent fan controller too. Something like this.
Edited by Vagrant Storm - 9/18/13 at 12:40pm
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post #3 of 8
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I have a fan controller I ordered them from frozen cpu and they clipped on a little wire with a three pin but only blue wire attached I hooked it up to my fan controller and that didn't work later to find out that it was a fan speed monitor, we're caniIbbuy resistors locally like radio shack etc.
    
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post #4 of 8
Locally? Radioshack would probably be your best bet unless you had a microcenter around. I have a feeling it is something you'll need to get online.

Though the fan controller should work...you just have to plug the fans power into it and turn the knob. It won't care about fan speed or monitoring wires. It changes the power that is fed to the fan.
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post #5 of 8
Thread Starter 
Quote:
Originally Posted by Vagrant Storm View Post

Locally? Radioshack would probably be your best bet unless you had a microcenter around. I have a feeling it is something you'll need to get online.

Though the fan controller should work...you just have to plug the fans power into it and turn the knob. It won't care about fan speed or monitoring wires. It changes the power that is fed to the fan.
ah see that's were it's not working mine has a tiny 4 pin on the fan controller side and for power my fans using a 12v straight from the psu
    
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post #6 of 8
So you could get by with a three or four pin to molex adapter then for each fan.

Which is also something that you might have a hard time finding locally, but I would take steps to make the fan controller work before buying resistors.

Though if you had some old fans with the right connectors you could just cut and splice the wires. I've turned many a molex powered fan into a three pin fan. The red and black wires are all that is needed...just need to make sure you are hooking up the right polarity when you splice them in as the connector can only go on one way of course
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post #7 of 8
Quote:
Originally Posted by strykerr1 View Post

... a jet engine spooled up inside my computer, I mean literally spooled up it was crazy sounding. second all the things on my desk went flying off soda cans and all, third they pulled are so hard and so fast out of my case it stalled out all the three other exhaust fans in my case literally stalled them out and caused my one 140mm intake to go ape ****, did I mention that I literally could not hear inside my room the we're so Damn loud ...

That made my day smile.gif .

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post #8 of 8
Thread Starter 
Quote:
Originally Posted by TELVM View Post

That made my day smile.gif .


Haha that's awesome, so I didn't have any extra fans sitting around so... I hard wired them to my fan controller, worked like a charm for about ten seconds. Then the flicking fan controller witch I assumed was not rated for that many watts exploded and caught on fire... So i recheck the specs on frozen cpu and noticed they are dc.... Not ac. Anyone know of a good fan controller rated for dc and 13.6w each fan. I
    
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