DIY case fan - power supply

[gte539f]

I want to use a computer case fan as a simple DIY cooling system:

http://www.newegg.com/Product/Product.aspx?Item=N82E16811999602

Does anybody know of a cheap power supply that I can plug straight into the AC outlet? What are the voltages, red=+5V, yellow=+12V, and black=gnd?

One would be sufficient for my tank? It's 30 gallons 36"x12"x16". Is there something I can use to control the speed of the fan, or just on/off? Thanks

 

[zero26]

I just used 2 cheapy 3 dollar fans from newegg and wired them to a old ac adapter. heres the linkhttp://www.josephsreef.com/?p=185

 

[kimber45]

no, yellow is the rpm signal wire. just tape it off.

 

[sedor]

I bought two 120mm fans and used this fancy little contraption to plug both of them right into the wall. I would spring for the extra long one if you have any distance to go because even that one isn't all that long.

http://www.coolerguys.com/840556088776.html - This is what plugs into the wall.
http://www.coolerguys.com/840556087083.html - This connects to the fans.

 

[gte539f]

So if I got an 80mm fan would one be enough for my tank, or should I get two?

 

[celamb89]

Just use an old phone charger or something like it... If you look closely you can see the output i.e. 12vdc 500mA, and then just find a fan than runs of that voltage just mix and match the charger and fan!

 

[Spazdad]

check out these.. These are supposed to be the best..

http://www.xoxide.com/thermaltake-120mm-cat-fan.html

 

[reefermad619]

http://www.silenx.com/ixtremaprofans.asp?sku=ixp-76-18

a friend of mine has these and loves them.

 

[reefluv]

Radio shack fans seem to work well. I have used them for years. First as cooling fans for my audio/video equipment and now one for drawing air out of my wine cellar and one in my sump area. The two fans are atleast 12 years old and still going strong!

 

[Metal Man 1221]

no, yellow is the rpm signal wire. just tape it off.

on a fan yes, on a power source it is indeed 5vdc

 

[Spazdad]

http://www.silenx.com/ixtremaprofans.asp?sku=ixp-76-18

a friend of mine has these and loves them.

WOW compare the two..
the thermaltake are nice. but wow those silenx are really nice.. And you can get them at the local ciruit city... http://www.circuitcity.com/applications/SearchTools/search.asp?keywords=silenx&searchbtn.x=0&searchbtn.y=0

 

[reefermad619]

That were my friend got his. We no longer have circuit city in San Diego though.

WOW compare the two..
the thermaltake are nice. but wow those silenx are really nice.. And you can get them at the local ciruit city... http://www.circuitcity.com/applications/SearchTools/search.asp?keywords=silenx&searchbtn.x=0&searchbtn.y=0

 

[kimber45]

on a fan yes, on a power source it is indeed 5vdc

on pc power supplies yellow is 12v, red is 5v, and yellow+red is 7.5v.

 

[rickb]

on pc power supplies yellow is 12v, red is 5v, and yellow+red is 7.5v.

Wait, on my fan I taped off yellow and put red to the 12 volt power, are you saying thats wrong?

 

[kimber45]

Wait, on my fan I taped off yellow and put red to the 12 volt power, are you saying thats wrong?

that's correct, you have it right.

sry i was replying to metal man but it didn't show his quote for some reason. i can see how it looked confusing.