The book is designed for use as a textbook for a first course in circuit analysis or as a supplement to standard texts and can be used by electrical engineering students as well as other engineering and technology students. Emphasis is placed on the basic laws, theorems, and problem-solving techniques which are common to most courses. The book begins with fundamental definitions, circuit elements including dependent sources, circuit laws and theorems, and analysis techniques such as node voltage and mesh current methods. These theorems and methods are initially applied to DC-resistive circuits and then extended to RLC circuits by the use of impedance and complex frequency. Chapter 3, where the concept of complex frequency is introduced, phasor analysis, sinusoidal steady state, power, power factor, and its correction.. Series resonance, quality Factor, Q, power, bandwidth, and selectivity of a series resonant circuit, coupled circuits and transformers are thoroughly covered in Chapter 4. The characteristics of three-phase circuits, the analysis of balanced loads and unbalanced Loads, the calculation and measurement of power in three-phase circuits are mainly introduced in the last chapter. It can be used as a primary text or supplementary text. It is also ideal for self-study and provides the technical staffs and university teachers with references.

随着科学技术的迅猛发展，高素质科技人才的需求愈加迫切。教育部要求有条件的学校开展英语授课或双语教学，并引进了一大批国外优秀的原版教材，对我国高素质科技人才的培养发挥了重要作用。但由于国内外的教学内容及课时要求不同，国外原版教材难以完全满足国内教学的要求。 双语教学在当今教育国际化、提倡科技原始创新的高科技时代有其新的特点和更高的标准与要求。开展双语教学的关键之一是选用合适的原版教材。教材应该是体现先进教学体系、教学内容和教学方法的有机知识载体，也是推进和优化双语教学、培养掌握现代科技知识、能进行国际科技交流与合作、具有强烈创新意识和能力的高素质人才的重要保证。一部能综合反映现代电路理论及其相关科学技术发展的优秀外语教材，能激发学生的学习兴趣，提高教学质量。 为了提高电气工程类专业本科生的培养质量和国际竞争力，近年来沈阳农业大学信息与电气工程学院在本科生中进行了“电路理论”课程的双语教学实践，针对双语教学的中心环节进行了大量的教学研究工作，对编写适合我国国情的英文版电路教材进行了有益的探索与实践。本书作者受教育部的派遣,曾于2008年在美国加利福尼亚州立大学圣地亚哥分校进行电路与系统双语教学研究。本书广泛吸收了近年来国内外出版的《电路》教材中先进、科学和实用的内容，精心、科学、有机地进行内容整合，同时结合多年的电路理论的教学经验编著了这本适合于我国国情的电气工程类课程外语教材--《电路基础》. 本书强调“电路理论”课程的基本知识、基本理论、基本技能（解题技巧和方法）的介绍。同时在编写上注重人文文化，每章开头均介绍对本学科做出重要贡献的科学家的生平与相关事迹，以拓宽学生的...