This amazing book about basic electrical and electronics engineering was written by Tony R. Kuphaldt and it was released under the Design Science License . These terms and conditions allow for free copying, distribution, and/or modification of this document by the general public. After that this book has been updated by numerous contributors.

Master Index**Chapter 1: Basic AC Theory**

1.1 What is Alternating Current (AC)?

1.2 AC Waveforms

1.3 Measurements of AC Magnitude

1.4 Simple AC Circuit Calculations

1.5 AC phase

1.6 Principles of Radio**Chapter 2: Complex Numbers**

2.1 Introduction to Complex Numbers

2.2 Vectors and AC Waveforms

2.3 Simple Vector Addition

2.4 Complex Vector Addition

2.5 Polar Form and Rectangular Form Notation for Complex Numbers

2.6 Complex Number Arithmetic

2.7 More on AC “polarity”

2.8 Some Examples with AC Circuits

Chapter 3: Reactance and Impedance — Inductive

3.1 AC Resistor Circuits (Inductive)

3.2 AC Inductor Circuits

3.3 Series Resistor-Inductor Circuits

3.4 Parallel Resistor-Inductor Circuits

3.5 Inductor Quirks

3.6 What Is the Skin Effect?

Chapter 4: Reactance And Impedance — Capacitive

4.1 AC Resistor Circuits (Capacitive)

4.2 AC Capacitor Circuits

4.3 Series Resistor-Capacitor Circuits

4.4 Parallel Resistor-Capacitor Circuits

4.5 Capacitor Quirks**Chapter 5: Reactance And Impedance — R, L, And C**

5.1 Review of R, X, and Z

5.2 Series R, L, and C

5.3 Parallel R, L, and C

5.4 Series-parallel R, L, and C

5.5 Susceptance and Admittance

5.6 R, L and C Summary

Chapter 6: Resonance

6.1 An Electric Pendulum

6.2 Simple Parallel (Tank Circuit) Resonance

6.3 Simple Series Resonance

6.4 Applications of Resonance

6.5 Resonance in Series-Parallel Circuits

6.6 Q Factor and Bandwidth of a Resonant Circuit

Chapter 7: Mixed-Frequency AC Signals

7.1 Introduction to Mixed-Frequency AC Signals

7.2 Square Wave Signals

7.3 Other Waveshapes

7.4 More on Spectrum Analysis

7.5 Circuit Effects

Chapter 8: Filters

8.1 What is a Filter?

8.2 Low-pass Filters

8.3 High-pass Filters

8.4 Band-pass Filters

8.5 Band-stop Filters

8.6 Resonant Filters

8.7 Summary of Filters

Chapter 9: Transformers

9.1 Mutual Inductance and Basic Operation

9.2 Step-up and Step-down Transformers

9.3 Electrical Isolation

9.4 Phasing

9.5 Winding Configurations

9.6 Voltage Regulation

9.7 Special Transformers and Applications

9.8 Practical Considerations – Transformers

Chapter 10: Polyphase AC Circuits

10.1 Single-phase Power Systems

10.2 Three-phase Power Systems

10.3 Phase Rotation

10.4 Polyphase Motor Design

10.5 Three-phase Y and Delta Configurations

10.6 Three-phase Transformer Circuits

10.7 Harmonics in Polyphase Power Systems

10.8 Harmonic Phase Sequences

Chapter 11: Power Factor

11.1 Power in Resistive and Reactive AC circuits

11.2 True, Reactive, and Apparent Power

11.3 Calculating Power Factor

11.4 Practical Power Factor Correction

Chapter 12: AC Metering Circuits

12.1 AC Voltmeters and Ammeters

12.2 Frequency and Phase Measurement

12.3 Power Measurement

12.4 Power Quality Measurement

12.5 AC Bridge Circuits

12.6 AC Instrumentation Transducers

Chapter 13: AC Motors

13.1 Introduction to AC Motors

13.2 Synchronous Motors

13.3 Synchronous Condenser

13.4 Reluctance Motor

13.5 Stepper Motors

13.6 Brushless DC Motor

13.7 Tesla Polyphase Induction Motors

13.8 Wound Rotor Induction Motors

13.9 Single-phase Induction Motors

13.10 Other Specialized Motors

13.11 Selsyn (Synchro) Motors

13.12 AC Commutator Motors

Chapter 14: Transmission Lines

14.1 A 50-Ohm Cable?

14.2 Circuits and the Speed of Light

14.3 Characteristic Impedance

14.4 Finite-length Transmission Lines

14.5 “Long’’ and “Short’’ Transmission Lines

14.6 Standing Waves and Resonance

14.7 Impedance Transformation

14.8 Waveguides

Appendix: CONTRIBUTOR LIST