AC Circuits

Objectives: We want to be able to
  • analyze ac circuits in the frequency domain by writing and solving mesh or node equations
  • find the complete response of switched ac circuits
Reading: Sections 10.9 10.13 and 10.14

Lecture Notes:

  • Node Voltage Analysis involves writing and solving the Node Equations, a set of simultaneous equations whose unknowns are the node voltages. To write the node equations, we
    1. Identify the node voltages.
    2. Express the element currents and voltages as functions of the node voltages.
    3. Apply KCL at the nodes of the circuit.
  • Mesh Current Analysis involves writing and solving the Mesh Equations, a set of simultaneous equations whose unknowns are the mesh currents. To write the mesh equations, we
    1. Identify the mesh currents.
    2. Express the element currents and voltages as functions of the mesh currents.
    3. Apply KVL to the meshes of the circuit.
  • Mesh and Node Equation examples for AC Circuits.
  • The complete response of a switched AC Circuits.

Handouts:

  1. Node equations for dc and ac circuits.
  2. Mesh and Node Equations for ac circuits.

On-line Exercises:

  1. Complex Arithmetic
  2. Simple AC Circuits
  3. More AC circuits.

 


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