BJT - Small Signal Equivalent Circuit

Discussion in 'Homework Help' started by VVS, Feb 7, 2008.

  1. VVS

    Thread Starter Active Member

    Jul 22, 2007
    66
    0
    Hi could somebody please show me how to draw the small signal equivalent circuit of this?? I have included everything exept the Rb feedback resistor between the Collector and the Base. I have no idea where it should be included in the small signal circuit. :confused:
    thank you
    VVS
     
  2. S_lannan

    Active Member

    Jun 20, 2007
    247
    2
    Hi there.

    First off, do you know how to calculate the DC biasing of this configuration?

    I can draw the small signal circuit for ac analysis, but it would be pretty useless without the maths that goes with it.
     
  3. S_lannan

    Active Member

    Jun 20, 2007
    247
    2
    anyways i tried to find some 'online' info on this circuit however i couldn't find anything.

    However i went through some books and found a decent run through of the small signal analysis.

    The book is 'electronic devices and circuit theory' by boylestad /nashelsky.

    The circuit is attached.
     
  4. VVS

    Thread Starter Active Member

    Jul 22, 2007
    66
    0
    hey, i appreciate your work thanx a lot man.
    DO you also know how to draw the equivalent according to the pi model???
    I know how to caclulate the biasing, but in the quesiton it just asks to calculate the small signal gain. of that circuit. I am having really trouble with it. I have no idea where to start.
     
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