



Electric Circuits Fundamentals(7/e)(Internationa Edition) 







This book is designed to help readers obtain a thorough
understanding of the basic principles of electric circuits. It provides a
practical coverage of electric circuits (DC/AC) and an introduction to
electronic devices that technicianlevel readers can readily understand.
Wellillustrated and clearly written, the book contains a fullcolor layout that
enhances visual interest and ease of use. This acclaimed book covers all the
basics of DC and AC circuits. Safety tips, key terms, and a comprehensive set of
appendices are included. An important reference tool for service shop
technicians, industrial manufacturing technicians, laboratory technicians, field
service technicians, engineering assistants and associate engineers, technical
writers, and those in technical sales.
 Margin icons indicate text circuits that are rendered in Electronics Workbench
and CircuitMaker on the CDROM packaged with each text.
 New EWB/CircuitMaker Troubleshooting Problems.
 New Safety Notes indicate key information that students can transfer to their
laboratory experience.Capacitors (Chapter9) and RC circuits (Chapter 10) are
covered in sequence, followed by inductors (Chapter 11), RL circuits (Chapter
12), and RLC circuits and resonance (Chapter 13). Transformers (Chapter 14) now
follows RLC circuits and resonance.
 A new, easiertoread text design and use of color help students locate key
information for review.
 Chapter Objectives, an Introduction, Key Terms, and Application Assignments
precede each chapter to offer students an overview of the applications they will
be able to complete by chapter''s end.
 Section Reviews follow each chapter section to reinforce concepts and check
for understanding.
 Numerous inchapter examples illustrate a variety of areas where concepts can
be applied.
 Endofchapter problems are separated by chapters section and level of
difficulty, allowing students to progress with their problemsolving skills in a
stepbystep manner.

Part I DC Circuits
Chapter 1 Quantities and Units
11 Scientific and Engineering Notation
12 Units and Metric Prefixes
13 Metric Unit Conversions
14 Measured Numbers
15 Electrical Safety
Chapter 2 Voltage, Current, and Resistance
21 Atoms
22 Electrical Charge
23 Voltage
24 Current
25 Resistance
26 The Electric Circuit
27 Basic Circuit Measurements
Application Assignment: Putting Your Knowledge to Work
Chapter 3 Ohm¡¯s Law, Energy, and Power
31 Ohm¡¯s Law
32 Application of Ohm¡¯s Law
33 Energy and Power
34 Power in an Electric Circuit
35 The Power Rating of Resistors
36 Energy Conversion and Voltage Drop in a Resistance
37 Power Supplies
38 Introduction to Troubleshooting
Application Assignment: Putting Your Knowledge to Work
Chapter 4 Series Circuits
41 Resistors in Series
42 Total Series Resistance
43 Current in a Series Circuit
44 Application of Ohm¡¯s Law
45 Voltage Sources in Series
46 Kirchhoff¡¯s Voltage Law
47 Voltage Dividers
48 Power in Series Circuits
49 Voltage Measurements
410 Troubleshooting
Application Assignment: Putting Your Knowledge to Work
Chapter 5 Parallel Circuits
51 Resistors in Parallel
52 Total Parallel Resistance
53 Voltage in a Parallel Circuit
54 Application of Ohm¡¯s Law
55 Kirchhoff¡¯s Current Law
56 Current Dividers
57 Power in Parallel Circuits
58 Troubleshooting
Application Assignment: Putting Your Knowledge to Work
Chapter 6 SeriesParallel Circuits
61 Identifying SeriesParallel Relationships
62 Analysis of SeriesParallel Resistive Circuits
63 Voltage Dividers with Resistive Loads
64 Loading Effect of a Voltmeter
65 The Wheatstone Bridge
66 Thevenin¡¯s Theorem
67 The Maximum Power Transfer Theorem
68 The Superposition Theorem
69 Troubleshooting
Application Assignment: Putting Your Knowledge to Work
Chapter 7 Magnetism and Electromagnetism
71 The Magnetic Field
72 Electromagnetism
73 Electromagnetic Devices
74 Magnetic Hysteresis
75 Electromagnetic Induction
76 Applications of Electromagnetic Induction
Application Assignment: Putting Your Knowledge to Work
Part II AC Circuits
Chapter 8 Introduction to Alternating Current and Voltage
81 The Sinusoidal Waveform
82 Sinusoidal Voltage Sources
83 Voltage and Current Values of Sine Waves
84 Angular Measurement of a Sine Wave
85 The Sine Wave Formula
86 Analysis of AC Circuits
87 Superimposed DC and AC Voltages
88 Nonsinusoidal Waveforms
89 The Oscilloscope
Application Assignment: Putting Your Knowledge to Work
Chapter 9 Capacitors
91 The Basic Capacitor
92 Types of Capacitors
93 Series Capacitors
94 Parallel Capacitors
95 Capacitors in DC Circuits
96 Capacitors in AC Circuits
97 Capacitor Applications
Application Assignment: Putting Your Knowledge to Work
Chapter 10 RC Circuits
101 Sinusoidal Response of RC Circuits
102 Impedance and Phase Angle of Series RC Circuits
103 Analysis of Series RC Circuits
104 Impedance and Phase Angle of Parallel RC Circuits
105 Analysis of Parallel RC Circuits
106 Analysis of SeriesParallel RC Circuits
107 Power in RC Circuits
108 Basic Applications
109 Troubleshooting
Application Assignment: Putting Your Knowledge to Work
Chapter 11 Inductors
111 The Basic Inductor
112 Types of Inductors
113 Series and Parallel Inductors
114 Inductors in DC Circuits
115 Inductors in AC Circuits
116 Inductor Applications
Application Assignment: Putting Your Knowledge to Work
Chapter 12 RL Circuits
121 Sinusoidal Response of RL Circuits
122 Impedance and Phase Angle of Series RL Circuits
123 Analysis of Series RL Circuits
124 Impedance and Phase Angle of Parallel RL Circuits
125 Analysis of Parallel RL Circuits
126 Analysis of SeriesParallel RL Circuits
127 Power in RL Circuits
128 Basic Applications
129 Troubleshooting
Application Assignment: Putting Your Knowledge to Work
Chapter 13 RLC Circuits and Resonance
131 Impedance and Phase Angle of Series RLC Circuits
132 Analysis of Series RLC Circuits
133 Series Resonance
134 Series Resonant Filters
135 Parallel RLC Circuits
136 Parallel Resonance
137 Parallel Resonant Filters
138 Applications
Application Assignment Putting Your Knowledge to Work
Chapter 14 Time Response of Reactive Circuits
141 The RC Integrator
142 Response of RC Integrators to a Single Pulse
143 Response of RC Integrators to Repetitive Pulses
144 Response of RC Differentiators to a Single Pulse
145 Response of RC Differentiators to Repetitive Pulses
146 Response of RL Integrators to Pulse Inputs
147 Response of RL Differentiators to Pulse Inputs
148 Applications
149 Troubleshooting
Application Assignment: Putting Your Knowledge to Work
Chapter 15 Transformers
151 Mutual Inductance
152 The Basic Transformer
153 StepUp and StepDown Transformers
154 Loading the Secondary
155 Reflected Load
156 Impedance Matching
157 Nonideal Transformer Characteristics
158 Tapped and MultipleWinding Transformers
159 Troubleshooting
Application Assignment: Putting Your Knowledge to Work
Appendices
A Table of Standard Resistor Values
B Capacitor Color Coding and Marking
C The Current Source, Norton¡¯s Theorem, and Millman¡¯s Theorem
Answers to OddNumbered Problems
Glossary
Index
¡¡

Preface
This fifth edition of Electric Circuits Fundamentals provides a comprehensive
coverage of basic electrical and electronic concepts, practical applications,
and troubleshooting. The organization has been improved for a smoother and more
logical flow of the material in certain areas. In this edition, many topics have
been strengthened and improved, and some new topics and features have been
added. Also, a completely new text design and layout enhance the text's
appearance and useability.
This textbook is divided into two parts: DC Circuits in Chapters 1 through 7 and
AC Circuits in Chapters 8 through 15. NEW FEATURES AND IMPROVEMENTS
Engineering Notation: Chapter 1 includes an expanded coverage of engineering
notation and the use of the calculator (TI86) in scientific and engineering
notation.
Electrical Safety: Chapter 2 introduces electrical safety. It is supplemented by
a feature called Safety Point found throughout portions of the text. Safety
Points are identified by a special logo and design treatment.
Troubleshooting: An expanded coverage of troubleshooting begins in Section 38
with an introduction to troubleshooting. A systematic approach called the APM
(analysis, planning, and measurement) method is introduced and used in many of
the troubleshooting sections and examples. A new logo identifies troubleshooting
features.
Circuit Simulation Tutorials: A website tutorial associated with most chapters
can be downloaded for student use. These tutorials introduce students to
elements of Electronics Workbench¢â, as needed, on a chapterbychapter basis.
These tutorials may be found at prenhall/floyd.
Circuit Simulation Problems: A new set of problems at the end of most chapters
reference circuits simulated with both Electronics Workbench and CircuitMaker 
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