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Thread: PWM fancontroller

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  1. 01-07-2011, 11:00 AM #13
    Alexandr0s
    Alexandr0s is offline
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    Quote Originally Posted by CrazyNutz View Post
    2). Play with the value of R1. R1 is used as a pull-up resistor, it holds the gate of your n-channle mosfet HI (OFF), It maynot be holding it high enough, try 500ohm.
    Great advice! I soldered another 1k resistor parallel to the first one (to get 500 ohm resistance), and the Mosfet is barely getting hot at all, even though I'm currently contolling 2 fans with it .

    Another quick question: You said something about putting a diode between the j1-1 and j1-2 terminals. Which direction should the diode be facing?

    Also, a friend of mine gave me the advice to play with the capacity of the elco to allow for a better control? Is this true, and if so, would a 47uF elco be a good choice?
    Last edited by Alexandr0s; 01-07-2011 at 11:03 AM.
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