本書為配合北京大學信息科學技術學院本科生主幹基礎課、北京市精品課"電路分析原理"課堂教學而編寫,是北京市高校"優質本科教材課件"。可作為高等院校電子類基礎課"電路分析""電路原理""電路基礎"的教材,亦可供相關領域科技人員自學或參考。為使讀者在學習和選擇參考書時減少困惑,本書力圖體現如下特點:理論和知識體系完整,內容闡述簡明生動、更容易理解和掌握。理實交融,例題、思考題、研討題和習題豐富並富有啟發,拓展題取材於科研一線,習題三星分層並附參考答案,方便自學自測。配合雙語教學,章節綱要、名詞術語、例題習題均採用中英雙語,便於留學生使用。This book is written for the undergraduate course "Principles of Circuit Analysis" of the School of EECS in Peking University. It is the "high-quality undergraduate textbook" for colleges and universities in Beijing. The book can be used as the teaching material of electronic-basic courses such as "Circuit Analysis" or "Fundamentals of Electric Circuits". It can also be used for self-study or reference by researchers in related fields.The book includes the following characteristics. First, the theory and knowledge system are complete and easier to understand. Second, the book combines theory with practice. There are many examples, topics, problems, and exercises for discussion and practice. The extended topics are based o