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Maximum value of gain if tranistor not to be saturated

  1. May 12, 2017 #1
    1. The problem statement, all variables and given/known data
    Question.jpg

    2. Relevant equations


    3. The attempt at a solution
    Workings.jpg

    I don't know how to calculate part C) of the question. I'm unsure what saturation of a transistor refers too.
     
  2. jcsd
  3. May 12, 2017 #2

    scottdave

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    If the base voltage is greater than the collector voltage, then it is saturated. The more collector current, the higher voltage drop across Rc, which lowers the collector voltage.
     
  4. May 12, 2017 #3
    Ok. So the maximum value would occur when the collector voltage is 0.6V also. If that is the case:
    • The voltage across RC would be 11.4V
    • The current IC would be 11.4/1000 = 11.4 mA.
    • And with that , B would be (11.4 x 10-3)/(20 x 10-6) = 570
     
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