Help me setup 2 rpm-changeable 120mm fans that can be plugged into a wall

[erikiksaz]

I have absolutely no clue how to do this, so hopefully you guys can clue me in. Basically, i want to hook up 2, 120mm fans and be able to change their speeds. I'm thinking silent computer fans, but then the things might not run at the same voltage, blah blah blah. How can i do this and what parts are needed?

 

[Howard]

Computer fans run on DC.

 

[Heisenberg]

Computer fans usually run on 12v DC. You'd need an AC to DC converter with a variable voltage from 5-12v. Then you could vary the voltage and hence the speed.

 

[erikiksaz]

Originally posted by: Heisenberg
Computer fans usually run on 12v DC. You'd need an AC to DC converter with a variable voltage from 5-12v. Then you could vary the voltage and hence the speed.

Okay, i believe most of that could be found at radio shack. But, the problem is, how do i get that connected to the wall after it's converted and speed-changed?

 

[AgaBoogaBoo]

Originally posted by: erikiksaz

Originally posted by: Heisenberg
Computer fans usually run on 12v DC. You'd need an AC to DC converter with a variable voltage from 5-12v. Then you could vary the voltage and hence the speed.

Okay, i believe most of that could be found at radio shack. But, the problem is, how do i get that connected to the wall after it's converted and speed-changed?

I'm not sure myself, but I'm rpetty sure the guys at the shack can help you out.

 

[Heisenberg]

Originally posted by: erikiksaz

Originally posted by: Heisenberg
Computer fans usually run on 12v DC. You'd need an AC to DC converter with a variable voltage from 5-12v. Then you could vary the voltage and hence the speed.

Okay, i believe most of that could be found at radio shack. But, the problem is, how do i get that connected to the wall after it's converted and speed-changed?

The AC to DC converter plugs into the wall. If you can't find one with a variable output voltage, you could probably just stick a rheostat in there.

 

[MercenaryForHire]

Just get an old PSU, gut it, and buy a Fanmate for about five bucks.

- M4H

 

[DOSfan]

Originally posted by: Heisenberg

The AC to DC converter plugs into the wall. If you can't find one with a variable output voltage, you could probably just stick a rheostat in there.

Oh sure.... Confuse him more!

 

[erikiksaz]

Originally posted by: DOSfan

Originally posted by: Heisenberg

The AC to DC converter plugs into the wall. If you can't find one with a variable output voltage, you could probably just stick a rheostat in there.

Oh sure.... Confuse him more!

Suprisingly, i think i know what he's talking about. I had to buy a wall wart w/ variable voltage in the past for my headphone amp.

Thanks all!

 

[Heisenberg]

Originally posted by: DOSfan

Originally posted by: Heisenberg

The AC to DC converter plugs into the wall. If you can't find one with a variable output voltage, you could probably just stick a rheostat in there.

Oh sure.... Confuse him more!

I do what I can.

M4H's suggestion would work too (aside from the gutting it part). Probably be cheaper also.

 

[BillGates]

why do you want to do this?

 

[MercenaryForHire]

Originally posted by: Heisenberg

Originally posted by: DOSfan

Originally posted by: Heisenberg

The AC to DC converter plugs into the wall. If you can't find one with a variable output voltage, you could probably just stick a rheostat in there.

Oh sure.... Confuse him more!

I do what I can.

M4H's suggestion would work too (aside from the gutting it part). Probably be cheaper also.

What, not a fan* of carving up PSUs? (pun)

- M4H

 

[Heisenberg]

Originally posted by: MercenaryForHire

Originally posted by: Heisenberg

Originally posted by: DOSfan

Originally posted by: Heisenberg

The AC to DC converter plugs into the wall. If you can't find one with a variable output voltage, you could probably just stick a rheostat in there.

Oh sure.... Confuse him more!

I do what I can.

M4H's suggestion would work too (aside from the gutting it part). Probably be cheaper also.

What, not a fan* of carving up PSUs? (pun)

- M4H

*groan*

Did you mean gutting the PSU for the fan, or using it to power the fans?

 

[erikiksaz]

Originally posted by: Heisenberg

Originally posted by: MercenaryForHire

Originally posted by: Heisenberg

Originally posted by: DOSfan

Originally posted by: Heisenberg

The AC to DC converter plugs into the wall. If you can't find one with a variable output voltage, you could probably just stick a rheostat in there.

Oh sure.... Confuse him more!

I do what I can.

M4H's suggestion would work too (aside from the gutting it part). Probably be cheaper also.

What, not a fan* of carving up PSUs? (pun)

- M4H

*groan*

Did you mean gutting the PSU for the fan, or using it to power the fans?

Using separate fans, while gutting out the possibly loud psu fan.