I'm looking for a PWM to DC converter circuit

Discussion in 'The Projects Forum' started by okitai, Mar 10, 2008.

  1. okitai

    Thread Starter New Member

    Mar 4, 2008
    Hello all,
    I'm sure that someone already created this. Please direct my to the correct place.
    I want to build a PWM converter for my computer's fan. The input is a 4 wire like this http://www.pavouk.org/hw/fan/en_fan4wire.html (on the motherboard) and the output is to a 3 wire fan. The idea is the the PWM (the 4th wire) will be converted into a variable voltage on th 3rd wire. I did find a "company" that sells somthing like it: http://www.paqt.co.uk/docs/PaQ_PWM.pdf but I would like to make one myself.

    Thank you a lot.