The "Fundamentals of Electric Circuits" course is one of the important theoretical foundations of electrotechnical, electronic, and information science and technology. The teaching of this course follows the principle from simple to complex, aiming to enable students to understand and master the basic knowledge and analysis methods related to circuits. It consists of eight chapters. Chapter 1 mainly teaches the basic laws of circuits, laying the foundation for the learning of subsequent chapters. Chapter 2 is about the analysis of linear resistive circuits. It leads to the teaching focus with specific circuit analysis problems, including common methods and theorems used in circuit analysis. Chapter 3 is the analysis of dynamic circuits. Through a comparative analysis of dynamic circuits and linear resistive circuits, it summarizes the characteristics, laws, and analysis methods of dynamic circuits. Chapter 4 is the analysis of sinusoidal steady-state circuits, which is the basis for studying circuits with complex-waveform excitations. Chapter 5 is about the frequency response and resonance phenomena of circuits, focusing on learning the transformation laws and characteristics of circuit responses under different frequency excitations. Chapter 6 is about two-port circuits, which is a derivative of the black box method and also the basis for studying multi-terminal circuits. Chapter 7 is about nonlinear circuits, mainly introducing the basic knowledge of nonlinear circuits. Chapter 8 is about practical circuit design. Combining the content learned in the course, it introduces several common practical circuits.
