正版新书]电路基础(英文精编版原书第7版)查尔斯·亚历山大机械工

Preface iii

About the Authors xi

PART 1 DC Circuits 2

Chapter 1 Basic Concepts 3

1.1 Introduction 4

1.2 Systems of Units 5

1.3 Charge and Current 6

1.4 Voltage 9

1.5 Power and Energy 10

1.6 Circuit Elements 14

1.7 Problem Solving 16

Chapter 2 Basic Laws 23

2.1 Introduction 24

2.2 Ohms Law 24

2.3 Nodes,Branches,and Loops 29

2.4 Kirchhoffs Laws 31

2.5 Series Resistors and Voltage Division 37

2.6 Parallel Resistors and Current Division 38

2.7 Wye-Delta Transformations 45

Problems 51

Chapter 3 Methods of Analysis 61

3.1 Introduction 62

3.2 Nodal Analysis 62

3.3 Nodal Analysis with Voltage Sources 68

3.4 Mesh Analysis 73

3.5 Mesh Analysis with Current Sources 78

3.6 Nodal and Mesh Analyses by Inspection 80

3.7 Nodal Versus Mesh Analysis 84

Problems 85

Chapter 4 Circuit Theorems 97

4.1 Introduction 98

4.2 Linearity Property 98

4.3 Superposition 101

4.4 Source Transformation 105

4.5 Thevenins Theorem 109

4.6 Nortons Theorem 115

4.7 Derivations of Thevenins and Nortons Theorems 119

4.8 Maximum Power Transfer 120

Problems 122

Chapter 5 Operational Amplifiers 133

5.1 Introduction 134

5.2 Operational Amplifiers 134

5.3 Ideal Op Amp 138

5.4 Inverting Amplifier 139

5.5 Noninverting Amplifier 141

5.6 Summing Amplifier 143

5.7 Difference Amplifier 145

5.8 Cascaded Op Amp Circuits 148

Problems 152

Chapter 6 Capacitors and Inductors 163

6.1 Introduction 164

6.2 Capacitors 164

6.3 Series and Parallel Capacitors 170

6.4 Inductors 174

6.5 Series and Parallel Inductors 178

Problems 182

Chapter 7 First-Order Circuits 191

7.1 Introduction 192

7.2 The Source-Free RC Circuit 193

7.3 The Source-Free RL Circuit 197

7.4 Singularity Functions 203

7.5 Step Response of an RC Circuit 211

7.6 Step Response of an RL Circuit 218

Problems 222

PART 2 AC Circuits 270

Chapter 9 Sinusoids and Phasors 271

9.1 Introduction 272

9.2 Sinusoids 273

9.3 Phasors 278

9.4 Phasor Relationships for Circuit Elements 287

9.5 Impedance and Admittance 289

9.6 Kirchhoffs Laws in the Frequency Domain 291

9.7 Impedance Combinations 292

Problems 298

Chapter 10 Sinusoidal Steady-State Analysis 307

10.1 Introduction 308

10.2 Nodal Analysis 308

10.3 Mesh Analysis 311

Chapter 11 AC Power Analysis 339

11.1 Introduction 340

11.2 Instantaneous and Average Power 340

11.3 Maximum Average Power Transfer 346

11.4 E?ective or RMS Value 349

11.5 Apparent Power and Power Factor 352

11.6 Complex Power 355

11.7 Conservation of AC Power 359

11.8 Power Factor Correction 363

Problems 365

Chapter 12 Three-Phase Circuits 375

12.1 Introduction 376

12.2 Balanced Three-Phase Voltages 377

12.3 Balanced Wye-Wye Connection 381

12.4 Balanced Wye-Delta Connection 384

12.5 Balanced Delta-Delta Connection 386

12.6 Balanced Delta-Wye Connection 388

12.7 Power in a Balanced System 391

12.8 Unbalanced Three-Phase Systems 397

Problems 401

Chapter 13 Magnetically Coupled Circuits 409

13.1 Introduction 410

13.2 Mutual Inductance 411

13.3 Energy in a Coupled Circuit 418

13.4 Linear Transformers 421

13.5 Ideal Transformers 427

13.6 Ideal Autotransformers 435

13.7 Three-Phase Transformers 438

Problems 441

Chapter 14 Frequency Response 453

14.1 Introduction 454

14.2 Transfer Function 454

14.3 The Decibel Scale 457

14.4 Bode Plots 459

14.5 Series Resonance 469

14.6 Parallel Resonance 474

14.7 Passive Filters 477

14.7.1 Low-Pass Filter

14.7.2 High-Pass Filter

14.7.3 Band-Pass Filter

14.7.4 Band-Stop Filter

14.8 Active Filters 482

14.8.1 First-Order Low-Pass Filter

14.8.2 First-Order High-Pass Filter

14.8.3 Band-Pass Filter

14.8.4 Band-Reject (or Notch) Filter

14.9 Scaling 488

14.9.1 Magnitude Scaling

14.9.2 Frequency Scaling

14.9.3 Magnitude and Frequency Scaling

Problems492

Appendix A Simultaneous Equations and Matrix Inversion A-1

Appendix B Complex Numbers A-10

Appendix C Mathematical Formulas A-17

Appendix D Answers to Odd-Numbered Problems A-22

查尔斯·K.亚历山大(Charles K. Alexander)，博士，现为美国克利夫兰州立大学Washkewicz工程学院电子与计算机工程系教授，并担任电子学与航空航天技术研究中心（CREATE）主任。他是IEEE终身会士，曾任IEEE主席和CEO。他于1984年获得IEEE百年奖章，还先后荣获英国工程委员会颁发的杰出教育成就奖和杰出工程教育领导奖。