1. Limited time only! Sign up for a free 30min personal tutor trial with Chegg Tutors
    Dismiss Notice
Dismiss Notice
Join Physics Forums Today!
The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

Homework Help: Operation mode of NMOS transistor, can someone check my work

  1. Apr 12, 2017 #1
    1. The problem statement, all variables and given/known data
    Vtn = 0.4V

    Drain = 2.5V
    Gate = 1.9V
    Source = 0V

    Drain = 0.5V
    Gate = 2.2V
    Source = -2.3V

    Drain = 0.5V
    Gate = 0.9V
    Source = -2.5V

    2. Relevant equations

    3. The attempt at a solution
    Vgs = Vg - Vs = 1.9V
    Vgd = Vg - Vd = -0.6V
    Vgd < Vtn and Vgs > Vtn
    Saturation Region

    Vgs = Vg - Vs = 2.2 - (-2.3) = 4.5V
    Vgd = 2.2 - 0.5 = 1.7V
    Vgd > Vtn and Vgs > Vtn
    Triode/Linear/Ohmic region

    Vgs = 0.9 - (-2.5) = 3.4V
    Vgd = 0.9-0.5 = 0.4V
    What region is the NMOS operating in if Vgd is equal to Vtn?
  2. jcsd
  3. Apr 17, 2017 #2
    Thanks for the thread! This is an automated courtesy bump. Sorry you aren't generating responses at the moment. Do you have any further information, come to any new conclusions or is it possible to reword the post? The more details the better.
  4. May 5, 2017 #3

    rude man

    User Avatar
    Homework Helper
    Gold Member

    Hint: you're on the hairy edge, so to resolve the issue use the equations defining which operating region you're under.
Share this great discussion with others via Reddit, Google+, Twitter, or Facebook

Have something to add?
Draft saved Draft deleted