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3-Wire PC Fan Connection

Sylvain -  
 Sylvain -
Hello, I bought a PC fan to cool a soldering station that didn't have one. This fan has 3 wires that are the same color (black) and only one has slight gray stripes, so I don't know how to connect it...... thanks for your replies.

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TheDarkNether Posted messages 207 Registration date   Status Membre Last intervention   19
 
The one with gray stripes is the mass, there is a +12v wire and a PWM wire to know the speed of the fan (some have a 4th wire to control it)

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Sometimes, simple answers can be useful.
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Sylvain
 
Ok thanks, and do you know how to differentiate the 12v wire from the other one and is it important to connect the PWM? Thank you.
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TheDarkNether Posted messages 207 Registration date   Status Membre Last intervention   19 > Sylvain
 
So it's not mandatory to connect the PWM, the +12V wire must be one of the two, so you can connect the wire to one of them and see. Be careful, if the fan doesn't spin, disconnect it and try the other wire.
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Sylvain > TheDarkNether Posted messages 207 Registration date   Status Membre Last intervention  
 
Thank you very much, have a great weekend.
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