The BRADLEY DEPARTMENT of ELECTRICAL and COMPUTER ENGINEERING

# ECE 2004 Electric Circuit Analysis | ECE | Virginia Tech

### Course Information

#### Description

Introduction to the basic laws and techniques for the analysis of electric circuits. Calculation of the response of circuits with resistors, independent sources, controlled sources, and operational amplifiers. The transient analysis of basic circuits with R, L, and C components. An introduction to AC analysis and phasors.

#### Why take this course?

Circuit analysis and design using discrete R, L, and C components are the most fundamental skills for electrical engineers. This course introduces these basic circuit elements and teaches modeling and analysis skills for the DC portion of these circuits, with a small introduction to AC phasors. This knowledge is critical for the students' future studies in all areas of electrical and computer engineering.

### Learning Objectives

• use analytical techniques and an appropriate combination of Ohm’s law, Kirchoff’s laws, equivalent circuits, node voltage analysis, and mesh current analysis to solve linear circuits containing resistors, capacitors, inductors, independent sources, dependent sources, and operational amplifiers by determining all DC voltages, currents, and powers;
• use differential equations to solve for time-varying voltages, currents, stored energy, and dissipated power in first-order (RL and RC) and second-order (RLC) circuits;
• represent simple sinusoidal voltage and current waveforms as phasors and use the phasors to analyze elementary alternating current circuits operating under steady state conditions;
• use Matlab or a comparable software package to do the calculations required in items 1-2 above;
• use PSpice to analyze the circuits described in items 1-3 above.

### Course Topics

#### Percentage of Course

Voltage and current, the 2-terminal device, power concept 5%
Ohm’s law, sources, KCL, KVL, dependent sources 10%
Resistors: series, parallel, voltage and current dividers, measurements 10%
Mesh and node equations 10%
Thevenin and Norton equivalents (DC) 5%
Superposition, duality, and reciprocity 5%
Energy storage elements (L and C), combinations 10%
First order circuits (RL and RC) 10%
Second order circuits (RLC), step and general responses 10%
Introduction to phasors, with basic circuit equations 15%
Operational amplifiers as ideal element 10%