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General Discussion>Need a 40x40x10 3.3v 2 wire fan
kaelaria 11:15 PM 08-07-2009
I'm having a little trouble finding a 40x40x10mm 3.3v 2 wire fan anywhere - does anyone have a source?

Thanks!
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Rabidsquirrel 08:35 AM 08-08-2009
Is this for a laptop?
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BORIStheBLADE 08:47 AM 08-08-2009
The lowest I can find is a 5volt. What do you need it for?
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kaelaria 11:56 AM 08-08-2009
It's actually for a studio light, the original fan wore out.
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Rabidsquirrel 02:02 PM 08-08-2009
Your best bet may be getting the 5v fan and putting a resistor on it.
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kaelaria 02:03 PM 08-08-2009
I already have a 5v fan and it won't spin up, as it needs more voltage - how would a resistor work?
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Rabidsquirrel 10:24 AM 08-09-2009
You can use it to drop down the voltage. Give us the current rating on the 5v fan you have, and we can calculate what resistor you would need.
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kaelaria 10:29 AM 08-09-2009
The point is I didn't need to drop, I needed more.

The situation has changed though - somehow I misread the voltage from the rail and it's actually putting out 16v. I have NO idea how I read 3.2 before.

Anyway, I put in a 7805 voltage regulator that brought it down to 5v, but the fan still doesn't spin up for some reason, not sure why. It just jumps for a moment. I tried a larger 12v fan and it spins fine, so I'm just going to stop in at compusa and get a smaller 12v fan to fit.

The 5v fan tested ok, it spins on AA cells fine.
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