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BJT difference between equivalent circuits for large, small and pi hybrid signals

  1. Oct 25, 2014 #1
    Hi everyone. im starting to study transisors at Uni. and im confuse in some main concepts. i thought about posting it here so someone can help me up. are pi hybrid signals equivalent circuits used with the same porposes as small signals equivalent circuits? or are pi hybrid signals, small signals??

    sorry i know it might be sort of a stupid question. ill be very appreciated for any feedback

    thankyou
     
  2. jcsd
  3. Oct 25, 2014 #2
    Yes, pi-hybrid model is for small signals. Another commonly used and equivalent model is T-small signal model.
     
  4. Oct 25, 2014 #3
    thanks for your reply zoki

    very appreciated
     
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