MOSFET calculations

Discussion in 'Homework Help' started by electric_circuits, Jan 25, 2013.

  1. electric_circuits

    Thread Starter New Member

    Jan 2, 2013
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    Hi!

    I need help with a simple problem. I have the MOSFET attached in the post and I want to know how to choose R1 correct.
     
  2. thatoneguy

    AAC Fanatic!

    Feb 19, 2009
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  3. Audioguru

    New Member

    Dec 20, 2007
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    Your Mosfet as a source follower probably will not work.
    When the input is 0V then the source output is also 0V.
    But when the input is 3.3V then the Mosfet will not or might barely turn on so the source output will still be 0V.

    Most Mosfets need 10V from gate to source to completely turn on. Then the gate voltage in your circuit must be +24V.
     
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