I have no idea how to deal with this Circuits

Discussion in 'Homework Help' started by A212, May 9, 2008.

  1. A212

    Thread Starter New Member

    Apr 18, 2008
    7
    0
    Hi everone

    How deal with this circuits.

    which R1 = 100 W, R2 = 200 W and R3 = 300 W. Assume
    that the diode is well characterized by a piecewise linear model in which the turn on voltage is​
    0.7V.

    How to find :-


    a) Find the minimum Vs such that I2 not equal 0.
    b) Calculate I1, I2 and Vx if Vs = 5 V.​


    Thanks
     
  2. bertus

    Administrator

    Apr 5, 2008
    15,638
    2,344
    Hello,

    Do you mean R1=100 Watt or R1=100 Ohm etc. ?

    Greetings,
    Bertus
     
  3. A212

    Thread Starter New Member

    Apr 18, 2008
    7
    0
    I mean 100 ohm .
     
  4. Caveman

    Active Member

    Apr 15, 2008
    471
    0
    1. Assume the voltage on the diode is the minimum voltage that conducts current, ie. 0.7V. Calculate it all out.

    2. Write a current node equation at Vx and solve it.

    If you have problems, show what you got and we'll point out how to fix it.
     
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