Electric Circuits and Networks by K. S. Suresh Kumar
Content of Electric Circuits and Networks
Part I: Basic Concepts in Circuit Analysis
Chapter 1 Preliminaries to Circuit Analysis
Chapter 2 Fundamentals of Resistive Circuits
Chapter 3 Circuit Equivalence
Chapter 4 Circuit Theorems
Chapter 5 Circuit Simplification
Chapter 6 Circuit Equations
Chapter 7 Capacitors, Inductors, and Duality
Chapter 8 Sinusoidal Steady State
Chapter 9 Linear Transformer
Chapter 10 Ideal Transformers
Chapter 11 Basic Responses of First-Order Circuits
Chapter 12 Basic Responses of Second-Order Circuits
Part II: Topics in Circuit Analysis
Chapter 13 Ideal Operational Amplifier
Chapter 14 Frequency Responses
Chapter 15 Butterworth and Active Filters
Chapter 16 Responses to Periodic Inputs
Chapter 17 Real, Reactive, and Complex Power
Chapter 18 Responses to Step and Impulse Inputs
Chapter 19 Switched Circuits with Initial Energy Storage
Chapter 20 Convolution
Chapter 21 Properties of the Laplace Transform
Chapter 22 Laplace Transform in Circuit Analysis
Chapter 23 Fourier Transform
Chapter 24 Two-Port Circuits
Chapter 25 Balanced Three-Phase Systems
Preface of Electric Circuits and Networks
This book is more than a textbook on electric circuits. It is a veritable learning reference that presents electric circuit analysis in a simplified manner, without sacrificing rigor and thoroughness. The book is a sequel to the author’s Electric Circuits and Signals, CRC Press, 2008.
The electric signal material has been omitted and circuit analysis is treated in a more simplified and expanded form. The book differs from other textbooks on electric circuits in its pedagogy and
organization, as expounded later, particularly in the following respects.
Effective problem solving based on (a) a systematic, logical, and imaginative approach, having the acronym ISDEPIC, formulated by the author and refined over the past several years through interaction with students, and (b) presenting a variety of topics and examples that foster problem-solving skills by encouraging the student to view a problem in different ways, particularly fresh and original ways, founded on a sound understanding of fundamentals. The author firmly believes that a course on electric circuits provides an excellent opportunity to nurture problem-solving skills, as a central objective of quality engineering education. That is why some topics, such as exploitation of symmetry in electric circuits, are included, although they are of limited practical importance.
It is emphasized from the very beginning that circuits obey two universal conservation laws: conservation of energy and conservation of charge, which imply, respectively, conservation of power and conservation of current. Kirchhoff’s laws are simply an expression of these conservation laws and not some sacrosanct laws that are peculiar to electric circuits. They are convenient to apply in lieu of the more fundamental conservation laws because they are linear in voltage and current.
a first course on electric circuits, if desired. Some sections and examples in both Parts I and II are marked with a star to indicate that they may be skipped in a more limited coverage of the material. More than 430 exercises are included at the ends of most sections of chapters, or within sections. These exercises are of two types: (1) Primal exercises that are simple, straightforward applications of the main concepts discussed and are intended to allow students to practice direct applications of concepts and help them gain some self-confidence in doing so and (2) exercises that are not labeled “Primal” and that serve to extend some aspects of the topics discussed, or to verify some simple assertions made in the text, and not discussed in detail for the sake of brevity or avoidance of tedious repetition. More than 175 solved examples are included throughout the book to illustrate the topic being discussed. In almost all examples, a PSpice simulation is added after the solution, followed by problem-solving tips, whenever appropriate, to emphasize some useful problemsolving techniques. A “Learning Checklist” is added at the end of the main body of every chapter so as to serve both as a summary and as a check on the understanding of the main concepts and ideas presented in the chapter. The Learning Checklist is followed by a list of all the problem-solving tips in the solved examples of the chapter. More than 1500 problems are included at the ends of chapters for students to test their understanding of the material and apply the problem-solving skills they have acquired. Some of these are of the “shortsolution” type that test for the understanding of a specific concept, without involving much calculation. Other problems are of the “long-solution” type that require the logical formulation of a number of sequential calculation steps in order to obtain the required results. In general, the exercises and problems are ordered in increasing level of “challenge.” Design-type problems are included as a group at the ends of some chapters, wherever appropriate. Another group of problems, labeled “Probing Further,” are added at the ends of some chapters in order to examine some more advanced or specific topics. Answers are given following all exercises and problems that are not intended to verify or prove something.
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