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Amplifier

Discussion in 'General Electronics Discussion' started by ramankr48, Jun 23, 2018.

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  1. ramankr48

    ramankr48

    2
    0
    Jun 23, 2018
    in common emitter amplifier when Rc is removed by a coupled transformer then why the output of circuit is not amplify like the original ce amplifier even i am removing the Rc.
    pls answer this question
     
  2. (*steve*)

    (*steve*) ¡sǝpodᴉʇuɐ ǝɥʇ ɹɐǝɥd Moderator

    25,497
    2,839
    Jan 21, 2010
    Do you mean "replaced by a coupled transformer"?

    It is always helpful if you or both circuits.

    Is this homework?
     
  3. ramankr48

    ramankr48

    2
    0
    Jun 23, 2018
    yes "replace by a coupled transformer"
    actually i am doing a project, making class AB amplifier using transformer, but the problem is after replacing the collector resistance with transformer(made using two inductors in LTspice) then output signal is not amplifying.
     
  4. kellys_eye

    kellys_eye

    4,275
    1,147
    Jun 25, 2010
    When you bias the transistor for a specific Rc and CHANGE Rc, what do you think you may need to do?
     
  5. Audioguru

    Audioguru

    3,388
    731
    Sep 24, 2016
    A transformer was used in a class AB amplifier circuit 63 years ago. Why are you using a transformer today?
    Here is a modern circuit with no transformer:
     

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