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"Provides physics-based descriptions and models of discrete inductors and transformers as well as integrated magnetic devices"--
List of contents
Preface xvii
About the Author xix
List of Symbols xxi
1 Fundamentals of Magnetic Devices 1
1.1 Introduction 1
1.2 Fields 2
1.3 Magnetic Relationships 2
1.4 Magnetic Circuits 6
1.5 Magnetic Laws 9
1.6 Eddy Currents 29
1.7 Core Saturation 32
1.8 Inductance 40
1.9 Air Gap in Magnetic Core 51
1.10 Fringing Flux 54
1.11 Inductance of Strip Transmission Line 62
1.12 Inductance of Coaxial Cable 62
1.13 Inductance of Two-Wire Transmission Line 63
1.14 Magnetic Energy and Magnetic Energy Density 64
1.15 Self-Resonant Frequency 69
1.16 Quality Factor of Inductors 69
1.17 Classification of Power Losses in Magnetic Components 69
1.18 Noninductive Coils 71
1.19 Summary 71
1.20 References 74
1.21 Review Questions 76
1.22 Problems 78
2 Magnetic Cores 81
2.1 Introduction 81
2.2 Properties of Magnetic Materials 81
2.3 Magnetic Dipoles 83
2.4 Magnetic Domains 89
2.5 Curie Temperature 90
2.6 Magnetic Susceptibility and Permeability 91
2.7 Linear, Isotropic, and Homogeneous Magnetic Materials 93
2.8 Magnetic Materials 93
2.9 Hysteresis 96
2.10 Low-Frequency Core Permeability 98
2.11 Core Geometries 99
2.12 Ferromagnetic Core Materials 103
2.13 Superconductors 108
2.14 Hysteresis Loss 109
2.15 Eddy-Current Core Loss 113
2.16 Steinmetz Empirical Equation for Total Core Loss 129
2.17 Core Losses for Nonsinusoidal Inductor Current 135
2.18 Complex Permeability of Magnetic Materials 136
2.19 Cooling of Magnetic Cores 151
2.20 Summary 152
2.21 References 157
2.22 Review Questions 160
2.23 Problems 161
3 Skin Effect 163
3.1 Introduction 163
3.2 Resistivity of Conductors 164
3.3 Skin Depth 166
3.4 AC-to-DC Winding Resistance Ratio 173
3.5 Skin Effect in Long Single Round Conductor 173
3.6 Current Density in Single Round Conductor 175
3.7 Magnetic Field Intensity for Round Wire 193
3.8 Other Methods of Determining the Round Wire Inductance 195
3.9 Power Loss Density in Round Conductor 200
3.10 Skin Effect in Single Rectangular Plate 204
3.11 Skin Effect in Rectangular Foil Conductor Placed Over Ideal Core 215
3.12 Summary 218
3.13 Appendix 220
3.14 References 222
3.15 Review Questions 223
3.16 Problems 224
4 Proximity Effect 226
4.1 Introduction 226
4.2 Orthogonality of Skin and Proximity Effects 227
4.3 Proximity Effect in Two Parallel Round Conductors 227
4.4 Proximity Effect in Coaxial Cable 228
4.5 Proximity and Skin Effects in Two Parallel Plates 230
4.6 Antiproximity and Skin Effects in Two Parallel Plates 244
4.7 Proximity Effect in Open-Circuit Conductor 249
4.8 Proximity Effect in Multiple-Layer Inductor 250
4.9 Self-Proximity Effect in Rectangular Conductors 256
4.10 Summary 259
4.11 Appendix 260
4.12 References 261
4.13 Review Questions 263
4.14 Problems 263
5 Winding Resistance at High Frequencies 265
5.1 Introduction 265
5.2 Eddy Currents 265
5.3 Magnetic Field Intensity in Multilayer Foil Inductors 266
5.4 Current Density in Multilayer Foil
Report
"Loaded with essential formulas and design methods, this book will give the designer of high-frequency magnetic components not only a better design but will reinforce an understanding of the high-frequency magnetic component design." ( IEEE Electrical Engineering magazine , 1 March 2015)
