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Mosfets and resistance

  1. Feb 15, 2010 #1
    This isn't a homework question... I'm just trying to understand Mosfets in general. I've been reading about them, and I find them really interesting- very cool. However, I dont understand how the Vgs = Vds if the mosfet itself has resistance!? For example, I found this in a text and I fail to understand how Vout can equal 15 volts if the top mosfet has a resistance of 5k ohms.
  2. jcsd
  3. Feb 15, 2010 #2


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    Science Advisor

    That looks pretty mysterious.

    If you are going to refer to a diagram, you need to include the diagram or redraw it and include that.

    Generally, though, you probably know that if there is no current flowing in a resistor, there won't be a voltage across it. This seemed to answer what you were asking, but it is hard to be sure without a diagram.
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