Powering some fans...

Soldato
Joined
17 Jan 2006
Posts
4,211
Right, this is a bit of a strange question.

I am thinking of building a frame to hold some case fans, probably 120mm ones, to place over my home cinema amp to help keep in cool when watching films in hot weather but I can’t think how I would power them. I did think about the use of batteries but soon dismissed it as being a bad idea. I would like to include a fan controller so I can have the fans running nice and slowly so they don’t make too much noise.

Ideally I’d like to do it via mains power but don’t know how I would go about doing this. Anyone got any ideas? I did wonder about maybe building a box and sticking an old computer poser supply in there and running the power wires from it to the frame…would this be safe?


Valve
 
Permabanned
Joined
18 May 2006
Posts
9,036
power adapters, generally 240v to 9v DC
....13pin plug with switchmode PSU moulded on the back

used for DECT phones, HP printers etc



(...umm, maybe power bricks is an American expression ?)
 
Soldato
OP
Joined
17 Jan 2006
Posts
4,211
I get what you mean now, unfortunately I don't have any lying around at the mo. I do have an old computer power supplay that I could use but don't know if it's be safe to do so. Also not entirely sure how I would go about hooking it up to the fans...???

Valve
 
Associate
Joined
20 Apr 2006
Posts
2,022
Location
Leeds, UK
Easy - use that spare PSU you have!

If it has a switch on the back, you could just use a paper clip on the ATX connector to keep it 'on' constantly and just turn the fans on and off via the switch on the back of the PSU.

I keep a PSU spare - and its come in handy for testing Fans and my water cooling seperately to my main rig.
 
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