Common base emitter signal attenuation inpuy

Discussion in 'General Electronics Chat' started by kuannygohcheetatt, Sep 20, 2014.

  1. kuannygohcheetatt

    Thread Starter Member

    Oct 31, 2013
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    When i supply my signal at the input of the common base transistor,i directly measure the input using oscilloscope. To my dismal, the signal attenuates, is it becasue of the low input impedanc eof the transistor? Loading effect?
     
    Last edited: Sep 20, 2014
  2. MrChips

    Moderator

    Oct 2, 2009
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    What do you mean by common base emitter?
     
  3. kuannygohcheetatt

    Thread Starter Member

    Oct 31, 2013
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    I am aorry my mistake it os common base transistor
     
  4. MrChips

    Moderator

    Oct 2, 2009
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    It would help us to help you if you provided a circuit schematic.
     
  5. kuannygohcheetatt

    Thread Starter Member

    Oct 31, 2013
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    image.jpg
     
  6. kuannygohcheetatt

    Thread Starter Member

    Oct 31, 2013
    61
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    I straight
    measure the input at i but the 25 mv attenuate before it even enters the transistor, my teacher say it happens because of a reason but i duno what is that reason
     
  7. MrChips

    Moderator

    Oct 2, 2009
    12,442
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    Did you try to run a simulation?
     
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