Design an rc coupled bjt amplifier of gain 100

Discussion in 'Homework Help' started by tendulkar0, Sep 8, 2009.

  1. tendulkar0

    Thread Starter New Member

    Sep 8, 2009
    1
    0
    I have to desighn a RC Coupled BJT Amplifier of gain 100 and then connect proper feedback to it to have output waveform of frequency 1KHZ.

    plz help me out urgently

    thanks
     
  2. Gustav180

    Member

    Aug 25, 2009
    17
    0
    Hello
    I´m little confused of the problem. An amplifier with gain 100 is no match, but what is output waveform of frequency 1 kHz? An amplifier has allways a range of frequencies, i.e. from 50 Hz to 50 kHz.

    You can do a 2-stage amplifier with bjt and do a feedback from output to the first transistor emitter. A two stage amplifier has an open loop amplifing of around 1000 (no emitter capacitor at first stage). The feedback resistor should bee 100 times the first transistor emitter resistor. I.e. if the emitter resistor is 1 kohm, the feedback should bee 100 kohm.

    Best regards
    Gustav
     
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