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Old 12-28-2009, 07:51 PM   #1
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help wiring up computer fan with wall outlet plug


Hello, need a little advice on a project Im working on.
Without the details, I need to be able to plug a computer's cooling fan directly into a wall socket. I got the computer fan which has its own motor and lead wires. Here are the specs for it: Rated voltage=12VDC, Voltage range=10.2-13.8VDC, Rated current=.32Amp max, Rated power=3.84watts max.
Is there a way I can wire it up so I can plug it into a wall socket? What size wire should be used? Any help on this is great. Thanks!

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Old 12-28-2009, 08:21 PM   #2
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help wiring up computer fan with wall outlet plug


You will need a DC transformer, which you can get from RadioShack. They have the parts avail to soldier & Heat Shrink the connection.

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Old 12-28-2009, 08:26 PM   #3
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help wiring up computer fan with wall outlet plug


Why don't you just use a 120V fan?
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Old 12-28-2009, 08:54 PM   #4
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help wiring up computer fan with wall outlet plug


I need a fan that has a low airflow and when looking around on the net, the only thing that seemed like it would work was a CPU cooling fan. What Im trying to do is run a 4" duct with an inline fan from a room in my house that has a fireplace, to another part of the house because the heat does not move from the room easily. A strong fan would offset the draft for the fireplace. It just seemed that the cpu fan would fit well with the duct work (with some rigging) and wouldnt be too powerful. Just need to be able to move the air a little. Ive seen the inline booster fans for ducts but too much boost.
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Old 12-28-2009, 09:21 PM   #5
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help wiring up computer fan with wall outlet plug


A small 12 volt wall wart will work.
An old PC power supply although bulky will also work.
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Old 12-28-2009, 09:27 PM   #6
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help wiring up computer fan with wall outlet plug


Instead of doing this, I would call in a HVAC engineer and see if they have a solution that will work. Sometimes the cheapest route is not the best route.
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Old 12-28-2009, 10:08 PM   #7
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help wiring up computer fan with wall outlet plug


A fan would not offset the draft unless it blowing the air out of the structure. Blowing air around inside the same structure should not cause a back draft.
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Last edited by joed; 12-28-2009 at 10:48 PM.
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Old 12-28-2009, 10:19 PM   #8
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help wiring up computer fan with wall outlet plug


A PC fan won't push that much air, you need more cfm's
I sometimes use a big fan to push air around the house
It has no effect on the fireplace draft
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Old 12-28-2009, 11:28 PM   #9
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help wiring up computer fan with wall outlet plug


I would sugest you get an inline duct fan. It's made for this purpose.
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Old 12-29-2009, 06:07 AM   #10
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help wiring up computer fan with wall outlet plug


thanks for the input. I think I will try the inline duct fan. Seems a bit much to try to rig up this cpu fan. I will post back how things go.

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