PC Fan. Need Help To Identify The Voltage.

[Platinumstartvf]

Hi, I have a mini cooling fan with heatsink (about 6cm or so) attached to it on hand that I savaged it from an old PC. I need help to identify if this is a 5V or 12V fan. Usually there is a sticker on the fan that will state it's voltage like (ie: 12V 0.24A) but this one totally no sticker at all.....

Can anyone here please tell if this is a 5V or 12V fan??? It's really nice and I really don't want to damage it by connecting it with a wrong power supply.

Intention: I want to connect directly with a 12V power supply (2A) together with my 12V (10W) COB LED light project for my little mason jar fish tank.......

 

[knight27]

no way to tell by the looks. Go see how much motherboard PC supply to it

Or best is test it with two 1.5v batteries > 9v battery > 12V

 

[jim889]

cant really tell.. just plug 5v first and see if it runs

 

[Alphas]

Start with 5V, if it does not turn or slow then try 12V.

 

[Platinumstartvf]

no way to tell by the looks. Go see how much motherboard PC supply to it

Or best is test it with two 1.5v batteries > 9v battery > 12V

cant really tell.. just plug 5v first and see if it runs

Start with 5V, if it does not turn or slow then try 12V.

ummm.... yea realli can't tell how many volts...... hope it's 12V so I can use the solder the same wire with my COB LED light...... Ok gonna test it out with 5V.... then with 9V battery before going to 12V......

 

[jim889]

ummm.... yea realli can't tell how many volts...... hope it's 12V so I can use the solder the same wire with my COB LED light...... Ok gonna test it out with 5V.... then with 9V battery before going to 12V......

should work on 5V and 12V

just a matter of speed / rpm, 5v is slow, 12v is velly fast

 

[knight27]

ummm.... yea realli can't tell how many volts...... hope it's 12V so I can use the solder the same wire with my COB LED light...... Ok gonna test it out with 5V.... then with 9V battery before going to 12V......

see the speed. if at 9v it spin very fast than it is a 5v fan. if is still quite slow than go for 12v. no later you put 12v on a 5v fan. it will up lorry.

 

[Ideasmiths]

Simi lah, PC fan is DC don't care 5 or 12V.....anything and it will run, mor voltage runs faster. Its not like 220V or 110V appliance.

 

[compuser]

Intention: I want to connect directly with a 12V power supply (2A) together with my 12V (10W) COB LED light project for my little mason jar fish tank.......

Your fish feel hot meh. Can see it sweating?

 

[uselessbum]

There should be a sticker on the backside of the fan impeller/motor with the details. See if you can tilt it at an angle to see the back or take off the heatsink if possible.

 

[Ender]

The other side of the fan should have a printing of the require voltage. Need to remove it from the heatsink to see.

 

[Platinumstartvf]

Your fish feel hot meh. Can see it sweating?

no lah the jar about 30cm in height and the led light probably around 50cm high..... lolz...

 

[Platinumstartvf]

There should be a sticker on the backside of the fan impeller/motor with the details. See if you can tilt it at an angle to see the back or take off the heatsink if possible.

The other side of the fan should have a printing of the require voltage. Need to remove it from the heatsink to see.

Ok will remove the fan from heatsink later and see if any sticker that says 12V.... thanks.... hope there is.....

 

[Kum Jit Pow]

DC voltage difference won't cook your fan. just differ in power nia.


Read HWZ Forum Rules!

 

[Platinumstartvf]

Open up liao realli ish no stickers or labels at all....

 

[Platinumstartvf]

DC voltage difference won't cook your fan. just differ in power nia.


Read HWZ Forum Rules!

ok will try and see 12V power supply will work anot.... thanks...

 

[uselessbum]

Open up liao realli ish no stickers or labels at all....

By right should have one, maybe they thought nobody would ever bother opening up to reuse it.

In that case, got to deduce from other components. I assume that this fan was connected to the mobo? Then maybe see if mobo fan header got indicate voltage. If not, then see if you can find out the mobo model and check the specs for it. Most mobo fan headers are 12v.