Driving P-Channel MOSFET with Arduino

Discussion in 'General Electronics Chat' started by Xavier Pacheco Paulino, Sep 20, 2018.

  1. Xavier Pacheco Paulino

    Thread Starter Active Member

    Oct 21, 2015
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    47
    Honestly, I've never worked directly with P-Channel FETs before. Everything I know is just theoretical. Always been a N-Channel lover. Well, my applications so far work with N-Channels. This time, I'm interested in making a circuit work with P-Channel. Not a complex circuit though. I only have the IRF9540 FET available. I want to control a 12V/3A motor using Arduino PWM default frequency. Below you can see a common setup around the web. Looking deeply, do you think there is any kind of real shortcoming with this circuit?

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  2. Xavier Pacheco Paulino

    Thread Starter Active Member

    Oct 21, 2015
    559
    47
    I made some calculations and think that 1 kohms resistors (R1&R2) would work better.
     
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