电路原理（影印版） (2010 年度畅销榜NO.26806 )

本书主要讲述电子电路的基础知识，将引领学生迈进基本电子电路的殿堂。本书实用价值高，章末附有问题及学习指导，可作为电子电工类教材或相关人员的参考用书。\r\n
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1 Components, Quantities, and Units 5 \r\n\r\n 1-1 Electrical Components and Measuring \r\n\r\n Instruments 2 \r\n\r\n 1-2 Electrical and Magnetic Units 6 \r\n\r\n 1-3 Scientific Notation 8 \r\n\r\n 1-4 Engineering Notation and Metric Prefixes 12 \r\n\r\n 1-5 Metric Unit Conversions 15 \r\n\r\n 2 Voltage, Current, and Resistance 22 \r\n\r\n 2-1 Atomic Structure 24 \r\n\r\n 2-2 Electrical Charge 27 \r\n\r\n 2-3 Voltage 29 \r\n\r\n 2-4 Current 33 \r\n\r\n 2-5 Resistance 35 \r\n\r\n 2-4 The Electric Circuit 44 \r\n\r\n 2-7 Basic Circuit Measurements 51 \r\n\r\n 2--8 Electrical Safety 59 \r\n\r\n Technology Theory into Practice 62 \r\n\r\n 3 Ohm's Law 78 \r\n\r\n 3-1 Ohm's Law 80 \r\n\r\n 3-2 Calculating Current 82 \r\n\r\n 3-3 Calculating Voltage 85 \r\n\r\n Calculating Resistance 88 \r\n\r\n 3-5 The Relationship of Current, Voltage, \r\n\r\n and Resistance 89 \r\n\r\n 3-6 Introduction to Troubleshooting 92 \r\n\r\n Technology Theory into Practice 95 \r\n\r\n 4 Ener and Power 106 \r\n\r\n 4-4 Energy and Power 108 \r\n\r\n 4-4 Power in an Electric Circuit 110 \r\n\r\n 4-3 Resistor Power Ratings 112 \r\n\r\n 4-4 Energy Conversion and Voltage Drop in \r\n\r\n Resistance 116 \r\n\r\n 4-5 Power Supplies 117 \r\n\r\n Technology Theory into Practice 120 \r\n\r\n 5 Series Circuits 128 \r\n\r\n 5-1 Resistors in Series 130 \r\n\r\n 5-2 Current in a Series Circuit 132 \r\n\r\n 5-3 Total Series Resistance 134 \r\n\r\n 5-4 Ohma's Law in Series Circuits 138 \r\n\r\n 5-5 Voltage Sources in Series 142 \r\n\r\n 5-6 Kirchhoff's Voltage Law 145 \r\n\r\n 5-7 Voltage Dividers 149 \r\n\r\n 5-8 Power in a Series Circuit 156 \r\n\r\n 5-9 Circuit Ground 158 \r\n\r\n 5-10 Troubleshooting 162 \r\n\r\n Technology Theory into Practice 167 \r\n\r\n 6 Parallel Circuits 184 \r\n\r\n 6-1 Resistors in Parallel 186 \r\n\r\n 6-2 Voltage in Parallel Circuits 189 \r\n\r\n 6-3 Kirchhoff's Current Law 191 \r\n\r\n 6-4 Total Parallel Resistance 195 \r\n\r\n 6-5 Ohm's Law in Parallel Circuits 201 \r\n\r\n 6-6 Current Sources in Parallel 205 \r\n\r\n 6-7 Current Dividers 206 \r\n\r\n 6-8 Power in Parallel Circuits 210 \r\n\r\n 6-9 Examples of Parallel Circuit Applications 212 \r\n\r\n 6-10 Troubleshooting 217 \r\n\r\n Technology Theory into Practice 222 \r\n\r\n 7 Series-Parallel Circuits 238 \r\n\r\n 7-1 Identifying Series-Parallel Relationships 240 \r\n\r\n 7-2 Analysis of Series-Parallel Circuits 246 \r\n\r\n 7-3 Voltage Dividers with Resistive Loads 253 \r\n\r\n 7-4 Loading Effect of a Voltmeter 258 \r\n\r\n 7-5 Ladder Networks 261 \r\n\r\n 7-6 The Wheatstone Bridge 266 \r\n\r\n 7-7 Troubleshooting 271 \r\n\r\n Technology Theory into Practice 275 \r\n\r\n 8 Circuit Theorems and Conversions 294 \r\n\r\n 8-1 The Voltage Source 296 \r\n\r\n 8-2 The Current Source 298 \r\n\r\n 8-3 Source Conversions 300 \r\n\r\n 8.4 The Superposition Theorem 303 \r\n\r\n 8-5 Thevenin's Theorem 310 \r\n\r\n 8-6 Norton's Theorem 319 \r\n\r\n 8-7 Maximum Power Transfer Theorem 323 \r\n\r\n 8-8 Delta-to-Wye (A-to-Y) and Wye-to-Delta \r\n\r\n (Y-to-A) Conversions 325 \r\n\r\n Technology Theory into Practice 331 \r\n\r\n 9 Branch, Mesh, and Node Analysis 346 \r\n\r\n 9-1 Branch Current Method 348 \r\n\r\n 9-2 Determinants 351 \r\n\r\n 9-3 Solving Simultaneous Equations Using \r\n\r\n a Calculator 357 \r\n\r\n \r\n\r\n 9-4 Mesh Current Method 359 \r\n\r\n 9-5 Node Voltage Method 364 \r\n\r\n Technology Theory into Practice 367 \r\n\r\n 10 MagneUsm and ElectromagneUsm 378 \r\n\r\n 10-1 The Magnetic Field 380 \r\n\r\n 10-2 Electromagnetism 384 \r\n\r\n 10-3 Electromagnetic Devices 390 \r\n\r\n 10-4 Magnetic Hysteresis 395 \r\n\r\n 10-5 Electromagnetic Induction 397 \r\n\r\n 10-6 Applications of Electromagnetic Induction 401 \r\n\r\n Technology Theory into Practice 405 \r\n\r\n 11 Introduction to AlternaUng Current \r\n\r\n and Voltage 414 \r\n\r\n 11-1 The SineWave 416 \r\n\r\n 11-2 Sinusoidal Voltage Sources 421 \r\n\r\n 11-3 Voltage and Current Values of Sine Waves 424 \r\n\r\n 11-4 Angular Measurement of a Sine Wave 428 \r\n\r\n 11-5 The Sine Wave Formula 432 \r\n\r\n 11-6 Ohm's Law and Kirchhoff's Laws in AC \r\n\r\n Circuits 434 \r\n\r\n 11-7 Superimposed DC and AC Voltages 437 \r\n\r\n 11-8 Nonsinusoidal Waveforms 439 \r\n\r\n 11-9 The Oscilloscope 446 \r\n\r\n Technology Theory into Practice 453 \r\n\r\n 12 Phasors and Complex Numbers 468 \r\n\r\n 12-1 Introduction to Phasors 470 \r\n\r\n 12-2 The Complex Number System 475 \r\n\r\n 12-3 Rectangular and Polar Forms 479 \r\n\r\n 12-4 Mathematical Operations 486 \r\n\r\n Technology Theory into Practice 491 \r\n\r\n 13 Capacitors 498 \r\n\r\n 13-1 The Basic Capacitor 500 \r\n\r\n 13-2 Types of Capacitors 507 \r\n\r\n 13-3 Series Capacitors 513 \r\n\r\n 13-4 Parallel Capacitors 518 \r\n\r\n 13-5 Capacitors in DC Circuits 520 \r\n\r\n 13-6 Capacitors in AC Circuits 529 \r\n\r\n 13-7 Capacitor Applications 535 \r\n\r\n 13-8 Testing Capacitors 540 \r\n\r\n Technology Theory into Practice 542 \r\n\r\n 14 Inductors 556 \r\n\r\n 14-1 The Basic Inductor 558 \r\n\r\n 14-2 Types of Inductors 564 \r\n\r\n 14-3 Series lnductors 565 \r\n\r\n 14-4 Parallel Inductors 566 \r\n\r\n 14-5 lnductors in DC Circuits 568 \r\n\r\n 14-6 lnductors in AC Circuits 577 \r\n\r\n 14-7 Inductor Applications 583 \r\n\r\n 14--8 Testing lnductors 584 \r\n\r\n Technology Theory into Practice 585 \r\n\r\n 15 Transformers 598 \r\n\r\n 15-1 Mutual Inductance 600 \r\n\r\n 15-2 The Basic Transformer 601 \r\n\r\n 15-3 Step-Up Transformers 605 \r\n\r\n 15-4 Step-Down Transformers 606 \r\n\r\n 15-5 Loading the Secondary Winding 607 \r\n\r\n 15-6 Reflected Load 609 \r\n\r\n 15-7 Matching the Load and Source Resistances 611 \r\n\r\n 15-8 The Transformer as an Isolation Device 614 \r\n\r\n 15-9 Practical Transformers 616 \r\n\r\n 15-10 OtherTypes of Transformers 619 \r\n\r\n 15-11 Troubleshooting 624 \r\n\r\n Technology Theory into Practice 626 \r\n\r\n 16 RC Circuits 638 \r\n\r\n Part 1: Series Reactive Circuits 64o \r\n\r\n 16-1 Sinusoidal Response of RCCircuits 640 \r\n\r\n 16-2 Impedance and Phase Angle of Series \r\n\r\n RC Circuits 641 \r\n\r\n 16-3 Analysis of Series RCCircuits 644 \r\n\r\n Part 2: Parallel Reactive Circuits eS1 \r\n\r\n 16-4 Impedance and Phase Angle of Parallel \r\n\r\n RC Circuits 651 \r\n\r\n 16-5 Analysis of Parallel RCCircuits 654 \r\n\r\n Part 3: Series-Parallel Reactive \r\n\r\n Circuits 660 \r\n\r\n 16-6 Analysis of Series-Parallel RC Circuits 660 \r\n\r\n Part 4: Special Topics 666 \r\n\r\n 16-7 Power in RC Circuits 666 \r\n\r\n 16-8 Basic Applications 670 \r\n\r\n 16-9 Troubleshooting 681 \r\n\r\n Technology Theory into Practice 687 \r\n\r\n 17 RL Circuits 706 \r\n\r\n Part 1: Series Reactive Circuits 708 \r\n\r\n 17-1 Sinusoidal Response of RL Circuits 708 \r\n\r\n 17-2 Impedance and Phase Angle of Series \r\n\r\n RL Circuits 709 \r\n\r\n 17-3 Analysis of Series RL Circuits 711 \r\n\r\n Part 2: Parallel Reactive Circuits 716 \r\n\r\n 17-4 Impedance and Phase Angle of Parallel \r\n\r\n RL Circuits 716 \r\n\r\n 17-5 Analysis of Parallel RL Circuits 719 \r\n\r\n Part 3: Series-Parallel Reactive \r\n\r\n Circuits 723 \r\n\r\n 17-6 Analysis of Series-Parallel RL Circuits 723 \r\n\r\n Part 4: Special Topics 727 \r\n\r\n 17-7 Power in RL Circuits 727 \r\n\r\n 17-8 Basic Applications 730 \r\n\r\n 17-9 Troubleshooting 738 \r\n\r\n Technology Theory into Practice 743 \r\n\r\n 18 RLC Circuits and Resonance 758 \r\n\r\n Part 1: Series Reactive Circuits 76o \r\n\r\n 18-1 Impedance of Series RLC Circuits 760 \r\n\r\n 18-2 Analysis of Series RLC Circuits 762 \r\n\r\n 18-3 Series Resonance 766 \r\n\r\n Part 2: Parallel Reactive Circuits 773 \r\n\r\n 18-4 Impedance of Parallel RLC Circuits 773 \r\n\r\n 18-5 Analysis of Parallel RLC Circuits 775 \r\n\r\n 18-6 Parallel Resonance 778 \r\n\r\n Part 3: Series-parallel Reactive \r\n\r\n Circuits 782 \r\n\r\n 18-7 Analysis of Series-Parallel RLC Circuits 782 \r\n\r\n Part 4: Special Topics 790 \r\n\r\n 18-8 Bandwidth of Resonant Circuits 790 \r\n\r\n 18-9 Applications 794 \r\n\r\n Technology Theory into Practice 798 \r\n\r\n 19 Basic Filters 812 \r\n\r\n 19-1 Low-Pass Filters 814 \r\n\r\n 19-2 High-Pass Filters 821 \r\n\r\n 19-3 Band-Pass Filters 826 \r\n\r\n Band-Stop Filters 830 \r\n\r\n Technology Theory into Practice 834 \r\n\r\n 20 Circuit Theorems in AC Analysis 846 \r\n\r\n 20-1 The Superposition Theorem 848 \r\n\r\n 20-2 Thevenin's Theorem 853 \r\n\r\n 20-3 Norton's Theorem 863 \r\n\r\n Maximum Power Transfer Theorem 867 \r\n\r\n Technology Theory into Practice 871 \r\n\r\n 21 Pulse Response of Reactive Circuits 882 \r\n\r\n 21-1 The RC Integrator 884 \r\n\r\n 21-2 Single-Pulse Response of RC \r\n\r\n Integrators 885 \r\n\r\n 21-3 Repetitive-Pulse Response of RC \r\n\r\n Integrators 890 \r\n\r\n 21-4 Single-Pulse Response of RC \r\n\r\n Differentiators 895 \r\n\r\n 21-5 Repetitive-Pulse Response of RC \r\n\r\n Differentiators 900 \r\n\r\n 21-6 Pulse Response of RL Integrators 903 \r\n\r\n 21-7 Pulse Response of RL Differentiators 908 \r\n\r\n 21-8 Relationship of Time (Pulse) Response \r\n\r\n to Frequency Response 911 \r\n\r\n 21-9 Troubleshooting 914 \r\n\r\n Technology Theory into Practice 917 \r\n\r\n Polyphase Systems in Power \r\n\r\n 22 Applications 928 \r\n\r\n 22-1 Basic Polyphase Machines 930 \r\n\r\n 22-2 Polyphase Generators in Power Applications 932 \r\n\r\n 22-3 Three-Phase Generators 938 \r\n\r\n 22-4 Three-Phase Source/Load Analysis 943 \r\n\r\n 22-5 Three-Phase Power 950 \r\n\r\n APPENDICES \r\n\r\n A Table of Standard Resistor Values 959 \r\n\r\n B Batteries 960 \r\n\r\n C Derivations 963 \r\n\r\n O Capacitor Color Coding 966 \r\n\r\n Answers to Odd-Numbered Problems 970 \r\n\r\n Glossary 982 \r\n\r\n Index 989 \r\n
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This seventh edition of Principles of Electric Circuits: Conventional Current Version provides a complete and straightforward coverage of the basics of electrical components and circuits, with emphasis on analysis, applications, and troubleshooting. Many improvements have been made over the previous edition, but the coverage and organization remain the same. A new text design and layout enhance the text's appearance and usability.



New Features and Improvements

Troubleshooter Quiz: A multiple-choice quiz in the chapter end matter tests the student's grasp of what happens in a circuit as a result of certain changes or faults. The student must determine whether a specified quantity or parameter increases, decreases, or remains the same as a result of the introduction of a fault or a change in another circuit parameter. Answers are at the end of the chapter.

Engineering Notation: Chapter 1 includes an expanded coverage of engineering notation and the use of the calculator in scientific and engineering notation.

Electrical Safety: The topic of electrical safety is introduced in Chapter 2. It is supplemented by a feature called "Safety Note" located at appropriate points throughout the text and identified by a special logo.

Troubleshooting : An improved coverage of troubleshooting begins in Section 3-6 with an introduction. A systematic method called APM (analysis, planning, and measurement) is introduced and used in many of the troubleshooting sections and examples. Troubleshooting features are identified by a new logo.

Circuit Simulation: In addition to the EWB circuit simulations for Troubleshooting and Analysis problems that are available on the CD-ROM accompanying the textbook, Multisim circuits have been added. To avoid any backward compatibility issues, the EWB files have been retained for those who have not yet upgraded to Multisim.

Circuit Simulation Tutorials : The EWB and PSpice tutorials continue to be available on the website. In addition, Multisim tutorials are now available online. All of the tutorials be downloaded for student use from www.prenhall.com/floyd.

Key Terms: Terms identified as most important in each chapter are listed in the chapter opener. Within the chapter, the key terms are in color boldface and indicated with a "key"icon. Each key term is defined at the end of the chapter and in the comprehensive glossary at the end of the book.

Answer Reminders : Notes to remind students where to find the answers to the various exercises and problems appear throughout each chapter.