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Homework Help: CMOS inverter circuit question

  1. Mar 11, 2010 #1
    [SOLVED] cMOS inverter circuit question

    Hey guys I have the following circuit; its an inverter using transistors

    http://img716.imageshack.us/img716/7609/circuit.jpg [Broken]

    Im trying to figure out what the voltage value of Vin should be WHEN both transistors are in saturation mode. I have realized that if they both are in saturation mode then they will have the same current going through them - but when i use the drain current equations I'm left with a variable that I cant lock down in terms of Vin, namely the voltage across the gate of transistor 2 (Vgs2).

    Can anyone help?
    Last edited by a moderator: May 4, 2017
  2. jcsd
  3. Mar 11, 2010 #2
    Nevermind, I realized that Vgs2 is equal to 0 at all times.
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