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Homework Help: Transistor analysis

  1. Nov 1, 2011 #1
    1. The problem statement, all variables and given/known data
    Just started learning about transistors, and I am having difficulty doing this problem.

    The transistor in the circuit has [tex]k_n ^'=0.5mA/V^2, V_t=0.5 V, \lambda =0.[/tex]
    Show that operation at the edge of saturation is obtained when the following condition is satisfied
    [tex](\frac{W}{L})R_D=1.5 kΩ[/tex]

    3. The attempt at a solution
    As far as I know, if it is operating in on the edge of saturation, then
    [tex]\frac{1}{2}k_m ^'(\frac{W}{L})v_{OV}[/tex]
    However, when I manipulate this equation, I am unable to get to [tex](\frac{W}{L})R_D=1.5 kΩ[/tex]

    Can anyone provide me some guidance on this?
  2. jcsd
  3. Nov 2, 2011 #2
    Thanks anyways, but I figured it out.
  4. Apr 28, 2012 #3
    Hi, I'm bumping this old post because I am currently trying to work through the same problem but can't quite figure it out. I have the same equations that were mentioned in the original post.

    Any guidance would be appreciated.
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