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# Methods of Analysis of Resistive Circuits

IN HIS CHAPTER

4.1 Introduction

4.2 Node Voltage Analysis of Circuits with Current Sources

4.3 Node Voltage Analysis of Circuits with Current and Voltage Sources

4.4 Node Voltage Analysis with Dependent Sources

4.5 Mesh Current Analysis with Independent Voltage Sources

4.6 Mesh Current Analysis with Current and Voltage Sources

4.7 Mesh Current Analysis with Dependent Sources

4.8 The Node Voltage Method and Mesh Current Method Compared

4.9 Circuit Analysis Using MATLAB

4.10 Using PSpice to Determine Node Voltages and Mesh Currents

4.11 How Can We Check … ?

4.12 DESIGN EXAMPLE— Potentiometer Angle Display

4.13 Summary

Problems

PSpice Problems

Design Problems

## 4.1 Introduction

To analyze an electric circuit, we write and solve a set of equations. We apply Kirchhoff's current and voltage laws to get some of the equations. The constitutive equations of the circuit elements, such as Ohm's law, provide the remaining equations. The unknown variables are element currents and voltages. Solving the equations provides the values of the element current and voltages.

This method works well for small circuits, but the set of equations can get quite large for even moderate-sized circuits. A circuit with only 6 elements has 6 element currents and 6 element voltages. We could have 12 equations in 12 unknowns. In this chapter, we consider two methods ...

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