Circuit Systems with MATLAB and PSpice by Won Y. Yang

By Won Y. Yang

Software program instruments utilized to circuit research and layout are swiftly evolving, permitting scholars to maneuver past the time-consuming, math-intensive equipment of conventional circuit guide. via incorporating MATLAB 7.0 and PSpice 10.0, along systematic use of the Laplace remodel, Yang and Lee support readers speedily achieve an intuitive knowing of circuit options.

  • Unified scheme utilizing the Laplace remodel hurries up comprehension
  • Focuses on studying ideas and comparing layout effects, now not exhausting computation
  • Most examples illustrated with MATLAB analyses and PSpice simulations
  • Downloadable courses to be had for hands-on practice
  • Over a hundred thirty difficulties to augment and expand conceptual understanding

Includes accelerated insurance of key components such as:

  • Positive suggestions OP Amp circuits
  • Nonlinear resistor circuit analysis
  • Real international 555 timer circuit examples
  • Power issue correction programs
  • Three-phase AC energy method analysis
  • Two-port parameter conversion

Based on many years of educating electric engineering scholars, Yang and Lee have written this article for a whole direction in circuit thought or circuit research. Researchers and engineers with out wide electric engineering backgrounds also will locate this e-book a useful advent to circuit platforms

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Additional resources for Circuit Systems with MATLAB and PSpice

Sample text

That correspond to assigning the mesh current variable i1 , i2 , . . commonly with the clockwise reference direction to each mesh, respectively. Step 1. Based on the VCR (voltage–current relationship), express the branch voltage of every element except sources in terms of the mesh currents (complying with the passive sign convention): v1 ¼ R1 iR1 ¼ R1 i1 ; v2 ¼ R2 iR2 ¼ R2 i2 ; v12 ¼ R12 iR12 ¼ R12 ði1 À i2 Þ Step 2. Apply KVL around the meshes to write the mesh equations with the branch voltage terms on the left-hand side and the source terms on the right-hand side: vR1 þ vR12 ¼ Vs1 ÀvR12 þ vR2 ¼ ÀVs2 Step 3.

4 The Number of KCL/KVL Equations To find the voltages and currents of a circuit, a set of circuit equations should be set up in the unknown voltages/currents and solved. Aside from how to set it up and solve it, the solvability of a system of circuit equations should be considered. In order for a set of equations to be solved, it should consist of the same number of independent equations as that of unknowns. Thus the independence of circuit equations must be secured as well as the necessary and sufficient number of equations.

One thing to note is that if a voltage source is directly connected to the reference node, the node voltage at the other end node of the voltage source is already known so that KCL does not have to be applied to that node, to say nothing of the reference node. 4 Node Analysis 43 equations or unknown node voltage variables decreases by the number of voltage sources that are connected to the reference node. 10) to set up the node equation(s). Another thing to note is that if a portion of the circuit involving the interested voltages/currents has been modified via source transformation, it should be restored back to the original connection after solving the node equation(s).

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