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In locus of amplification factor , what does the 'locus' represent?

  1. Apr 28, 2007 #1
    In "locus of amplification factor", what does the 'locus' represent?

    I am taking an applied class on complex variables and studying fractional linear transformations. I am given the amplificaton factor for a given circuit and asked to draw the "locus of the amplification factor." I can do this but my question is what exactly does this "locus" (which is a circle) represent??? Thanks
  2. jcsd
  3. Apr 28, 2007 #2
    A locus is the movement of the poles of the transfer function as the gain (amplification factor) varies form zero to infinity, this can be used to test the stability of the system with different vales of gain, or it can be used to adjust the system for certain parameters (faster transit response or less steady state error).
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