电路理论Chapter_1.ppt

SJTU SJTU Preface Place of Electrical Circuits in Modern Technology Chapter 1 Fundamental Knowledge Circuit and circuit model Actual electrical component: a battery or a light bulb Circuit Variables Circuit Variables Circuit Variables Reference polarities for power using passive sign convention Circuit Elements Voltage and Current Sources Resistors A diamond is used to represent a dependent source. Both the dependent current source and the dependent voltage source may be controlled by either a voltage or a current elsewhere in the circuit. So The algebraic sum of power in a circuit, at any instant of time, must be zero. Grasp command Introduction The design of the circuits has 2 main objectives: 1)? To gather, store, process, transport, and present information. 2)? To distribute and convert energy between various forms. The study of circuits provides a foundation for areas of electrical engineering such as: Communication system Computer system Control system Electronics Electromagnetic Power systems Signal processing Motivation for doing this course About the course Circuit Theory Circuit Analysis Circuit Synthesis Circuits (given) Excitation (given) Response (unknown) Circuit Analysis What we emphasize on, Since it provides the foundation for understanding the interaction of signal solution. Circuits (unknown) Excitation (given) Response (given) Circuit synthesis (design) In contrast to analysis, a design problem may have no solution or several solutions, Resistance circuits analysis Dynamic circuits analysis Sinusoidal steady state The course includes 3 parts: Reference Books 1)Fundamentals of Electric Circuits Charles K Alexander, Matthew N O Sadiku 清华大学出版社 2)The Analysis and Design of Linear Circuits Roland E.Thomas, Albert J.Rosa—2nd ed 3) Electrical Engineering Principles and Applications Allan R.Hambley ---2nd ed 4) 电路分析基础 李瀚荪 第三版 5) 电路 邱关源 第四版 6) Electric Circuits Joseph Edminister, Mahmood Nahvi -----3rd ed