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Zero / Pole Stages

Discussion in 'Electronic Basics' started by Hugo Caballero Figueroa, Feb 18, 2004.

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  1. Hi!

    I am trying to understand a macromodel for an op amp but they keep talking
    about the zero stage of the common mode stage and so on... Could anybody
    explain me what the zero stage (alternatively the pole stage) of let´s say
    the input of an op amp is? They are talking about the poles and zeros of
    what function? the transfer function? And what does the equivalent circuit
    for the zero stage mean?

    Thanks in advance,

  2. Jamie

    Jamie Guest

    not sure, sounds like a little electronic slang to me how ever.
    they could be talking about the +/- supply's and NULL point on the
    input NULL point being 0 volts at the input and the poles being the
    +/- side of the supplies.
    that is just a guess..
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