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bandwidth of amplifier

Discussion in 'General Electronics Discussion' started by electra, Jan 5, 2011.

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  1. electra

    electra

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    Jan 3, 2011
    greetings,
    I wonder if anyone can tell me why the product of bandwidth and gain has to be constant in amplifier? whats makes the amplifier to have such characteristics?
    thanks.
     
  2. (*steve*)

    (*steve*) ¡sǝpodᴉʇuɐ ǝɥʇ ɹɐǝɥd Moderator

    25,482
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    Jan 21, 2010
  3. davenn

    davenn Moderator

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    Sep 5, 2009
    Thats a handy graph Steve, not one I had the need to look for
    thanks for the info :)

    Dave N
     
  4. cj_elec_tech

    cj_elec_tech

    62
    0
    Oct 7, 2009
    Although that graph is only valid for AC coupled amplifiers. DC coupled amplifiers are 'flat' right to the vertical axis.
     
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