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  1. Rodrigo Franchi

    Positive feedback evaluation

    Ok. Then it is not a valid equation for the instability region?. In fact the equation has a discontinuity when BA cross the -1 point, it changes from +infinite to -infinite.
  2. Rodrigo Franchi

    Positive feedback evaluation

    Hello, I´m trying to figure out the following issue: If we have a feedback system: Af = A /(1 + βA) In the case that phase of βA = 180°, we have 3 cases: 1_ | βA| < 1 then, if we choose arbitrary βA = 0,5 (with phase 180°)  Af = A/(1-0,5) = 2*A ….. AMPLIFIER WITH POSITIVE FEEDBACK...

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