Power a fan using a 12v Adapter

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15 Feb 2011
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Hey,

I want to stick a couple fans (Silverstone 180mm Fan SST-FM181) in my cupboard to help keep it cool, I tried powering the fan via a USB but it just doesn't spin fast enough.

I just found this 12v adapter it was for an old router, Is this correct how ive wired it?

https://www.dropbox.com/s/5excp4vtiii95zx/2014-04-25 19.09.56.jpg

The red fan wire going to the black adapter wire with the white lines on.
The black fan wire going to the black plan adapter wire.
The yellow wire not going anywhere?

This is the adapter: https://www.dropbox.com/s/rkjvcyoyvwmjfjb/2014-04-25 19.10.12.jpg

Thanks
 
Last edited:
Looks fine.

The stripe does normally denote the positive voltage and based on that it should work.
 
Perfectly fine, as the adapter has a 12v 1Amps rating and the fans are 0.45Amps, so don't wire more than the two you have or you will damage the adapter.
 
I've yet to see a fan that actually uses its rated current. Quite often they state the startup current in the specs. In normal running conditions current draw will be around half that, as a guess based on experience.
 
Is there some kind of speed controller i can get to slow it down when i'm not gaming? The big fan has a speed controller built in with it but i have another fan attached aswell which is quite noisy at full rpm.
 
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