PWM help

Discussion in 'Electronics Resources' started by Avic, Jun 12, 2008.

  1. Avic

    Thread Starter New Member

    Jun 4, 2008
    4
    0
    Hi, I have to control with a PWM signal a PC 3-wires fan. I'm working with adcquisition card DSpace Ds1102.
    The fan needs 12v and 200ma for work, but this card supplies 5V and 100mA for the PWM.

    Which amplifier I need to use? and how I can build it on my mother board?
    Somebody can help me?
    Thanks!
     
  2. thingmaker3

    Retired Moderator

    May 16, 2005
    5,072
    6
    The 2N2222A should work. Drive the transistor from your dSpace board through a current limiting resistor. Put your fan on the collector of the transistor.
     
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