Lecture 4 - Resistive Network -Ch. 3 Learning objectives of...

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Resistive Network -Ch. 3 Learning objectives of this lecture z Analyse circuits using the principle of superposition z Analyse circuits using Thévenin theorem z Analyse circuits using Norton theorem z Determine average and rms values for time- varying sources R v B 2 + _ + _ v B 1 i = R +_ v B 1 i B 1 The net current through R is the sum of the in- dividual source currents: i = i B 1 + i B 2 . R v B 2 + _ i B 2 + Principle of Superposition z In a linear circuit containing N independent sources, each branch voltage and current is the sum of N voltages and currents each of which may be computed by setting all but one independent source equal to zero and solving the circuit containing that single independent source i S R 1 + _ v S A circuit i S R 1 R 2 The same circuit with v S = 0 i S R 1 + _ v S R 2 R 2 A circuit R 1 R 2 The same circuit with i S = 0 + _ v S 1. In order to set a voltage source equal to zero, we replace it with a short circuit. 2. In order to set a current source equal to zero, we replace it with an open circuit.
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Example Figure 3.25 + _ Ι 1 Ι 2 Two Terminal Circuit i Load v +
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Lecture 4 - Resistive Network -Ch. 3 Learning objectives of...

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