PC fan wire colors

badr00075 Posted messages 34 Status Member -
Baptiste - 16 Jul 2020 at 18:59

Hi friends:

The PC fan has 3 wires:

red

black

yellow

Could someone please describe the purpose of each wire?

THANK YOU in advance...

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10 answers

Answer 1 / 10

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Oblivion19500 Posted messages 52 Registration date Status Member Last intervention 172

Red is the +, black is the -, and yellow provides information about the fan's rotation, so it can be regulated with software like RivaTuner...
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Intelligence and money are like jam; the less you have, the more you spread it!
75
1. lucger--2411
  
  Thank you.....
  
  0
2. Fsix
  
  How to keep the fan running permanently?
  
  0
3. Baptiste
  
  Hello
  I have a black, white, and red thread, can someone help?
  
  0
Answer 2 / 10
Oblivion19500 Posted messages 52 Registration date Status Member Last intervention 172

I think that if you connect them no higher than 12v it should work, forgetting of course the yellow wire, unnecessary in your case.
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Intelligence and money are like jam, the less you have, the more you spread it!
7
Answer 3 / 10
braham2 Posted messages 122 Status Member 7

bingo that's it
6
Answer 4 / 10
blix83 Posted messages 203 Registration date Status Member Last intervention 27

Hello

just a little addition:
- black wire = negative

- yellow wire = positive 12V

- red wire = positive 5.5V

if that can help. :)
6
1. /
  
  Hello blix83
  
  For the fans, we more often see the functions indicated by Oblivion19500.
  
  I have the impression that each manufacturer does a bit what they want.
  So if your indication is accurate for a particular fan, it would be interesting to specify the fan/PC or motherboard model so that your response serves as a good reference.
  
  0
Answer 5 / 10
badr00075 Posted messages 34 Status Member 12

Hi

not simple batteries (like those in remote controls) or using a transformer to adjust the voltage.

it's for a project I just got for my studies.
4
Answer 6 / 10
badr00075 Posted messages 34 Status Member 12

Okay, thank you, I will try.
4
Answer 7 / 10
Hugdj199 Posted messages 1 Registration date Status Member Last intervention 4

Hi,

I have a problem, my fan has a black wire, a gray wire, and a brown wire. Can someone help me?
4
1. /
  
  Hello Hugdj199
  Sometimes we find
  black=-
  brown=+(12V but check the voltage should be marked on the fan label)
  gray=speed indication of the fan
  
  0
Answer 8 / 10
badr00075 Posted messages 34 Status Member 12

Thank you, Oblivion, for your response

Tell me please, do you have an idea how to use the fan with batteries for external use, not just in the PC?
3
Answer 9 / 10
Oblivion19500 Posted messages 52 Registration date Status Member Last intervention 172

A battery? A car battery? What's it for?
--
Intelligence and money are like jam; the less you have, the more you spread it!
3
Answer 10 / 10
nettlebay Posted messages 52 Status Member 97

Hello!
Same for me: Intel 12 v fan.
But I only have 3 wires: yellow, black, and green.
What do they correspond to?
3
1. /
  
  Hello nettlebay
  I have an intel that has on the cpu fan connector of the motherboard
  Black=ground(-);Yellow=+12v;Green=rotation
  Thank you.
  
  0
2. nettlebay Posted messages 52 Status Member 97
  
  OK! Thanks... I tested it. However, I thought that by reversing the polarity we could make it turn in the other direction. But it doesn't work. It is currently powered by an old Sony-Ericsson phone charger of 4.9v (which, curiously, doesn't heat up).. Not very efficient. I turned it around so that it works as an extractor. It's positioned on my Gigabyte Brix which is itself on a Vesa mount. The Brix BXBT-2807 is fanless but since I'm in the Caribbean, it gets hot in the summer! I will try with a more powerful transformer.
  
  0
3. /
  
  Hello
  Yes, the phone has a lithium battery: the charger probably measures and limits the current as well, which is why it doesn’t overheat.
  It’s also normal that the fan only spins in one direction: the shape of the blades is not symmetrical, it would be completely ineffective if it were spun the other way around.
  You can apply between 5 and 12v, the speed should increase with the voltage. The fan's power is listed in watts on the fan's label, and the transformer should be able to provide at least that much at 12v. The Brix power supply provides 12v 2.5A; we should find this 12v in the Brix, but the warranty won't cover any damage just in case...
  
  0
  1. nettlebay Posted messages 52 Status Member 97 > /
    
    Yes, but I thought he would have at least tried! Most continuous motors can be reversed by changing the polarity. But it's okay, I found a solution...
    Thanks again for the response.
    
    0
  2. / > nettlebay Posted messages 52 Status Member
    
    Most continuous motors can be reversed by changing the polarity
    In this motor, an electronic control intervenes and sets the direction of rotation.
    
    0

PC fan wire colors

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