basic electrical tech.

Discussion in 'General Electronics Chat' started by chyadesh, Apr 17, 2009.

  1. chyadesh

    Thread Starter Member

    Apr 10, 2009
    I do really have a good question but I have to draw a circuit diagram and paste here. But I am not getting the process.

    Q) Is it better to have output impedance more or input impedance?

    Q)can I please have the complete full-fleged meaning of "Emitter-Follower"
    It really troubles me to understand.;)
  2. beenthere

    Retired Moderator

    Apr 20, 2004
    A low output impedance feeding a high input impedance means the signal will not be attenuated or otherwise distorted.

    Our Ebook explains emitter followers pretty well (even if it refers to them as "common collector") -
  3. RAH1379

    Well-Known Member

    Dec 13, 2005
    you get the most power transfer when the output impedance matches the input impedance of the following stage.A low impedance circuit is strong, a high impedance circuit is weak. a high impedance circuit has more voltage and less current, a low impedance circuit has more current and less voltage.