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Thevenin and Norton theorems in AC circuits, detailing their application and equivalent circuit analysis. ​

Thevenin’s Theorem ​

  • Thevenin’s theorem states that any linear active network can be reduced to a single voltage source (V_th) and impedance (Z_th) in series. ​
  • Steps include removing load impedance, finding V_th, short-circuiting voltage sources, and calculating Z_th. ​
  • Example calculations demonstrate the process of finding the Thevenin equivalent circuit.

Norton’s Theorem

  • Norton’s theorem states that a linear circuit can be replaced by a constant current source (I_N) in parallel with a single impedance (Z_N). ​
  • Steps involve short-circuiting load impedance, finding short-circuit current (I_sc), and calculating Z_N. ​
  • Example calculations illustrate how to determine load current (I_L) using Norton’s theorem. ​

Example Applications

Key calculations include finding equivalent circuits and load currents, emphasizing practical applications in AC circuit analysis.

The document provides examples for both Thevenin and Norton theorems, detailing step-by-step procedures for circuit analysis.

Thevenin and Norton Theorems in AC Circuits – Lesson 5

Engineering Institute of Technology