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How can i know Vds in advance before simulation?

  1. Jul 31, 2015 #1
    i think this question is very important.
    We must know Vds to make MOSFETs in saturation region.
    if not, there would always be possibilities that a transistor falls in a linear region as Vds is lower than Vdsat.

    Of course, i can calculate Vds in a CS AMP with a drain resistor.
    I mean, in the other configurations, we should also know Vds.

    How can i calculate it?
  2. jcsd
  3. Aug 1, 2015 #2
    Well you need to use your circuit theory knowledge and solve for Vds.
    Also you can show as a circuit that you have a problem with.
  4. Aug 1, 2015 #3


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