# New 3 Pin Pc Fan Wiring Diagram Which Wire Is Negative On This PC Fan? - Electrical Engineering

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Which wire is negative on this PC fan? - Electrical Engineering - If you're looking to discern out which cord is ground on the fan itself, and you do not have a connector, then just join 12v to the center wire and attempt floor on both of the outdoor wires. While the fan spins, you've observed it. The opposite, if connected, is a tachometer. Connecting it to ground in short may not motive any damage.

Ragav e requested "can i use a 3wire laptop fan with a esc?" So i found a 3 twine pc fan in my junk container and attempted it, i do not know what the third wire is for but i found it worked as a ordinary dc motor by connecting a battery direct to it and i could not get it to paintings the usage of a brushless esc so the answer isn't any. Update 1 craig nehring has helped with this explanation (thank you craig) 2 wire enthusiasts are just 12 volt, properly maximum all computer lovers are 12 volt but how they are managed varies. Three twine fans and four twine fans all have a crimson/black for /- input respectively. For the three twine fan the 3rd cord is a tachometer output. The voltage to the fan can be controlled if enabled inside the pc bios. Those 3 cord fans commonly, at start up, bang on at 12 volts to get them going and the fan controller then ramps the speed down for quiet operation. So... Fan pace is controlled via lowering voltage from a max of 12v. Four twine fanatics, equal as three cord but then what does the 4th wire do? This cord is for virtual speed manipulate, maximum 4 wire fans can be managed with the three wire method if the bios has a putting for that. The 4th twine can also (in maximum cases) may be used by varying the voltage among the black terminal and the 4th cord between zero to ten volts dc, or as a digital pulse mode modulation. To be able to summarise, 12 volt in to black and pink, 3rd twine tach sign output, 4th wire pulse modulated or analogue 0 to 10 volt velocity manipulate. I have seen in which a special pwm sign can get 4 wire lovers to scream past 20,000 rpm replace 2 _tri ?List=pla... Filmed using fujifilm finepix s4800 edited the usage of serif movieplus starter edition low skip filter out 6500 hz ?List... ?Listing... /Grandadisan... /Grandadisan... /Grandadisan... /Grandadisan... /Grandadisan... ... Products - check each of these hyperlinks if you are interested as the prices will vary and the shipping fees can be specific. /Grand... / /Grandadsoth.

I simply got this computer fan and it has a three pin connector, i recognise the cord with the white stripe is effective but how can i find out which of the alternative two wires are bad?.

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This query seems to be off-subject matter. The users who voted to shut gave this particular purpose:"questions about using electronic gadgets are off-topic as this website is meant particularly for questions about electronics design." ?? leon heller, joe hass, placeholder if this query may be reworded to suit the rules inside the assist middle, please edit the query.

Hello men, i need your help! I have an enermax 12cm fan (eb122512h), i need to plug it to a 12v dc power supply however i don't know the way to twine it; the fan has 4 wires (yellow, black, white, crimson) however the strength deliver has just wires. May want to you help me?.