FAN speed regulator with temp

Discussion in 'The Projects Forum' started by Marino, Jun 15, 2007.

  1. Marino

    Thread Starter New Member

    Jun 4, 2007
    Hi pll, i have a small pc fan , and i wanna control is speed in function of the pc case temperature. I tough use a PIC and a LM35, and then control a power mosfet with a PWM created by the PIC.

    BUT, i think theres a simpler way to do this job, any ideas? or links :cool:

    Im new in this forum, but i love it :D and...sorry for my bad english
  2. hgmjr

    Retired Moderator

    Jan 28, 2005
    There is a high probablility that your PC fan is a DC brushless type. If so, here is an application note that has some useful information.