Why are there two inputs mosfets?

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  • mikay786
    Badcaps Veteran
    • Aug 2014
    • 765
    • UK
    #1

    Why are there two inputs mosfets?

    Just trying to fix this old Alienware m14x laptop.

    found a shorted capacitor and a shorted mosfet on the input mosfet pair.

    im i newish to this and was wondering why you almost always have a pair of identical mosfets on in the input? They both do the same thing so what the point?

    also on a side note i am eager to test laptop since no short now, is there a way to bypass the 2nd mosfet for a temporary solution until replacement arrives?

    Tags: None
    • mikay786
      Badcaps Veteran
      • Aug 2014
      • 765
      • UK
      #2
      1 Photo

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        • mon2
          Badcaps Legend
          • Dec 2019
          • 13913
          • Canada
          #3
          https://electronics.stackexchange.co...lways-in-pairs

            Comment

            • mikay786
              Badcaps Veteran
              • Aug 2014
              • 765
              • UK
              #4
              Cheers

                Comment

                • rumpumpel1
                  Senior Member
                  • Jul 2019
                  • 139
                  • germany
                  #5
                  In addition to the main purpose of a bidirectional switch, the first MOSFET also serves as an inrush current limiter.

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