Bjt multistage amplifier

Discussion in 'The Projects Forum' started by Faizan Saeed, Apr 30, 2012.

  1. Faizan Saeed

    Thread Starter New Member

    Apr 27, 2012
    1
    0
    Can someone plz help me how to use Common collector configuration for impedance matching at the end of multistage Amplifier.
     
  2. crutschow

    Expert

    Mar 14, 2008
    13,014
    3,234
    A common collector configuration (more commonly know as an emitter follower) has current gain equal to the transistor current gain (beta or Hfe), with a voltage gain of nearly one, so it can be used to match a high impedance source to a low impedance load.

    What is the impedance you are trying to match?
     
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