مقدمه‌ای بر مدارهای الکتریکی (موسیقی محبوب در بریتانیا)

An Introduction to Electric Circuits is essential reading for first year students of electronics and electrical engineering who need to get to grips quickly with the basic theory. This text is a comprehensive introduction to the topic and, assuming virtually no knowledge, it keeps the mathematical content to a minimum. As with other textbooks in the series, the format of this book enables the student to work at their own pace. It includes numerous worked examples throughout the text and graded exercises, with answers, at the end of each section. Front Cover......Page 1 Introduction to Electric Circuits......Page 4 Copyright Page......Page 5 Contents......Page 8 Preface......Page 12 Acknowledgements......Page 14 1.2 The Systéme International d'Unités......Page 16 1.3 Dimensional analysis......Page 19 1.4 Multiples and submultiples of units......Page 21 1.6 Problems......Page 23 2.1 Electricity......Page 25 2.3 Circuit elements......Page 26 2.4 Lumped parameters......Page 49 2.5 Energy stored in circuit elements......Page 50 2.6 Power dissipated in circuit elements......Page 51 2.7 Self-assessment test......Page 52 2.8 Problems......Page 53 3.2 Definition of terms......Page 55 3.4 Kirchhoff's voltage law......Page 57 3.5 The Principle of Superposition......Page 60 3.6 Thevenin's theorem......Page 63 3.7 Norton's theorem......Page 67 3.8 The Maximum Power Transfer Theorem......Page 69 3.9 Delta-star transformation......Page 71 3.10 Star-delta transformation......Page 74 3.11 Self-assessment test......Page 76 3.12 Problems......Page 77 4.1 Alternating quantities......Page 81 4.2 Single-phase a.c. circuits in the steady state......Page 87 4.3 Series a.c. circuits......Page 92 4.4 Complex notation......Page 97 4.5 Parallel a.c. circuits......Page 106 4.6 Series-parallel a.c. circuits......Page 110 4.7 Power in single-phase a.c. circuits......Page 112 4.8 Self-assessment test......Page 118 4.9 Problems......Page 120 5.2 Generation of three-phase voltage......Page 122 5.3 Phase sequence......Page 123 5.4 Balanced three-phase systems......Page 124 5.5 Power in balanced three-phase circuits......Page 130 5.6 Self-assessment test......Page 135 5.7 Problems......Page 137 6.1 Series resonance......Page 138 6.2 Parallel resonance......Page 148 6.3 Self-assessment test......Page 152 6.4 Problems......Page 153 7.2 Matrices......Page 156 7.3 Nodal voltage analysis......Page 162 7.4 Mesh current analysis......Page 173 7.6 Problems......Page 183 8.2 Circuits containing resistance and inductance......Page 187 8.3 Circuits containing resistance and capacitance......Page 196 8.4 The Laplace transform......Page 207 8.5 Self-assessment test......Page 216 8.6 Problems......Page 217 9.2 The impedance or z-parameters......Page 220 9.3 The admittance or y-parameters......Page 223 9.4 The hybrid or h-parameters......Page 225 9.5 The inverse hybrid or g-parameters......Page 226 9.6 The transmission or ABCD-parameters......Page 228 9.7 The inverse transmission parameters......Page 229 9.8 Cascaded two-port networks......Page 234 9.9 Characteristic impedance (Z0)......Page 240 9.10 Image impedances......Page 241 9.11 Insertion loss......Page 242 9.12 Propagation coefficient (γ')......Page 244 9.13 Self-assessment test......Page 245 9.14 Problems......Page 246 10.1 Duals of circuit elements......Page 248 10.2 Dual circuits......Page 249 10.3 Analogues......Page 253 10.4 Self-assessment test......Page 256 Answers to self-assessment tests and problems......Page 257 Index......Page 261 Front Cover 1 Introduction to Electric Circuits 4 Copyright Page 5 Contents 8 Preface 12 Acknowledgements 14 Chapter 1. Units and dimensions 16 1.1 Introduction 16 1.2 The Systéme International d'Unités 16 1.3 Dimensional analysis 19 1.4 Multiples and submultiples of units 21 1.5 Self-assessment test 23 1.6 Problems 23 Chapter 2. Electric circuit elements 25 2.1 Electricity 25 2.2 Electric circuits 26 2.3 Circuit elements 26 2.4 Lumped parameters 49 2.5 Energy stored in circuit elements 50 2.6 Power dissipated in circuit elements 51 2.7 Self-assessment test 52 2.8 Problems 53 Chapter 3. DC circuit analysis 55 3.1 Introduction 55 3.2 Definition of terms 55 3.3 Kirchhoff's current law 57 3.4 Kirchhoff's voltage law 57 3.5 The Principle of Superposition 60 3.6 Thevenin's theorem 63 3.7 Norton's theorem 67 3.8 The Maximum Power Transfer Theorem 69 3.9 Delta-star transformation 71 3.10 Star-delta transformation 74 3.11 Self-assessment test 76 3.12 Problems 77 Chapter 4. Single-phase a.c. circuits 81 4.1 Alternating quantities 81 4.2 Single-phase a.c. circuits in the steady state 87 4.3 Series a.c. circuits 92 4.4 Complex notation 97 4.5 Parallel a.c. circuits 106 4.6 Series-parallel a.c. circuits 110 4.7 Power in single-phase a.c. circuits 112 4.8 Self-assessment test 118 4.9 Problems 120 Chapter 5. Three-phase a.c. circuits 122 5.1 Introduction 122 5.2 Generation of three-phase voltage 122 5.3 Phase sequence 123 5.4 Balanced three-phase systems 124 5.5 Power in balanced three-phase circuits 130 5.6 Self-assessment test 135 5.7 Problems 137 Chapter 6. Resonance 138 6.1 Series resonance 138 6.2 Parallel resonance 148 6.3 Self-assessment test 152 6.4 Problems 153 Chapter 7. Nodal and mesh analysis 156 7.1 Introduction 156 7.2 Matrices 156 7.3 Nodal voltage analysis 162 7.4 Mesh current analysis 173 7.5 Self-assessment test 183 7.6 Problems 183 Chapter 8 Transient analysis 187 8.1 Introduction 187 8.2 Circuits containing resistance and inductance 187 8.3 Circuits containing resistance and capacitance 196 8.4 The Laplace transform 207 8.5 Self-assessment test 216 8.6 Problems 217 Chapter 9. Two-port networks 220 9.1 Introduction 220 9.2 The impedance or z-parameters 220 9.3 The admittance or y-parameters 223 9.4 The hybrid or h-parameters 225 9.5 The inverse hybrid or g-parameters 226 9.6 The transmission or ABCD-parameters 228 9.7 The inverse transmission parameters 229 9.8 Cascaded two-port networks 234 9.9 Characteristic impedance (Z0) 240 9.10 Image impedances 241 9.11 Insertion loss 242 9.12 Propagation coefficient (γ') 244 9.13 Self-assessment test 245 9.14 Problems 246 Chapter 10. Duals and analogues 248 10.1 Duals of circuit elements 248 10.2 Dual circuits 249 10.3 Analogues 253 10.4 Self-assessment test 256 Answers to self-assessment tests and problems 257 Index 261 Circuit theory, along with electromagnetic field theory, is one of the most important areas of study for all electrical and electronic engineering students. This text provides an accessible and comprehensive introduction to the subject, fully covering first and second year syllabuses on electric circuits. It is truly introductory with very little prior knowledge assumed: even the mathematical techniques required to manipulate the theory are explained from basics. There are hundreds of worked examples and problems, and self-assessment questions are included at the end of each chapter to allow the reader to check their understanding of the material before moving on