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need help with USB(Technical)

  • 19-05-2004 08:02PM
    #1
    CyberGhost
    Registered Users, Registered Users 2 Posts: 5,578 ✭✭✭


    I want to connect 3 pin fan cable to the usb cable, then I want to connect usb to the computer and power the fans, is it possible? what is the voltage of usb? what cables(colours) should I connect that are responsible for power?

    maybe there are ready made adapters?


Comments

  • #2
    daveJAM
    Closed Accounts Posts: 437 ✭✭daveJAM


    First of all you'll need to check the current that the fan draws. If its less than 500mA then you're ok.

    The usb port only provides 5 volts so the fan will run at a lower speed than normal. Depending on the fan it mightn't even start but pushing the fan by hand at first should solve that.

    You need to connect the red wire to the red wire and the black wire to the black wire. Its that simple.

    If you still want to use the speed sensor. (But that would defeat the purpose of it being usb) Then connect the red to red on the usb. Split the black and connect it to black on the usb and black on the 3pin fan connector. Connect the blue/yellow to the blue/yellow on the 3pin fan connector.


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