doubts on low frequency and high frequency model of transistor

Discussion in 'General Electronics Chat' started by JAIPRAKASH YADAV, Apr 20, 2015.

  1. JAIPRAKASH YADAV

    Thread Starter New Member

    Apr 20, 2015
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    why capacitor is short circuit in low frequency(h-parameter) model and not in high frequency(pi-model)model of transistor???????????

    please give a solution to my doubt..
     
    Last edited: Apr 20, 2015
  2. Kermit2

    AAC Fanatic!

    Feb 5, 2010
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    can you show the models?
    or would you prefer we just guess at the reason?
     
  3. Papabravo

    Expert

    Feb 24, 2006
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    Which capacitor are we talking about?
     
  4. crutschow

    Expert

    Mar 14, 2008
    13,001
    3,229
    Typically a small capacitor would be considered an open at low frequencies, not a short.
     
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