This book is a textbook for the construction of Shanghai\'s applied undergraduate majors. Circuit Principles is an important professional basic course for electrical majors. This book introduces the basic concepts, basic laws and analysis methods of circuits. The book is divided into 8 chapters, including basic circuit concepts and laws, linear resistance circuit analysis, circuit theorem, phasor method, sinusoidal steady-state circuit analysis, mutual inductance circuit, three-phase AC circuit and time domain analysis of dynamic circuits. Through the study of this book, students can acquire the basic knowledge of DC steady-state circuits, AC single-phase and three-phase steady-state circuits, transient circuits, and electromagnetic coupling circuit analysis, that is, by solving the voltage, current and power in the circuit, they can understand the characteristics of the circuit. At the same time, students can use the knowledge introduced in the textbook to design actual circuits and determine component parameters under given circuit technical indicators to achieve signal transmission, processing and control. Chapter 1 Basic Concepts and Laws of Circuits 1.1 Circuits and Circuit Models 1.2 Voltage and Current and Their Reference Directions 1.3 Electric Power and Energy 1.4 Passive Two-Terminal Components 1.5 Independent Sources and Controlled Sources 1.6 Kirchhoff\'s Laws Exercises Chapter 2 Analysis of Linear Resistor Circuits 2.1 Equivalent Transformation of Resistance 2.2 Equivalent Transformation of Power Source 2.3 Mesh Current Analysis Method 2.4 Node Voltage Method Exercises Chapter 3 Circuit Theorems 3.1 Superposition Theorem 3.2 Substitution Theorem 3.3 Thevenin\'s Theorem and Norton\'s Theorem 3.4 Power Transfer Theorem 3.5 Tellegen\'s Theorem Exercises Chapter 4 Phasor Method 4.1 Basic Concepts of Sinusoidal Quantities 4.2 Basic Concepts of Phasor Method 4.3 Phasor Model of Circuit 4.4 Phasor Diagram Exercises Chapter 5 Analysis of Sinusoidal Steady-State Circuits 5.1 Impedance and Admittance 5.2 Phasor Method for Solving Sinusoidal Steady-State Response in Circuits 5.3 Chapter 6 Mutual Inductance Circuits 6.1 Mutual Inductance 6.2 Calculation of Mutual Inductance Circuits 6.3 Transformer Principle 6.4 Ideal Transformer Exercises Chapter 7 Three-Phase AC Circuits 7.1 Three-Phase Power 7.2 Analysis of Three-Phase Circuits 7.3 Three-Phase Power Exercises Chapter 8 Time Domain Analysis of Dynamic Circuits 8.1 Switching Rules and Their Applications 8.2 Transient Response of RC Circuits 8.3 Transient Response of RL Circuits 8.4 Three-Element Method for Transient Analysis of First-Order Linear Circuits 8.5 Unit Step Response and Unit Impulse Response Exercises References
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