本书包括电路的基本概念与基本定律、电路的等效变换、电路的基本分析方法、电路的基本定理、正弦稳态电路的分析、耦合电感和理想变压器、三相电路、非正弦周期电流电路、动态电路的时域分析、双口网络和非线性电阻电路共 11章内容。本书根据教育部电子电气类基础课程教学指导委员会于 2004年修订的电路分析基础教学基本要求，结合电气类课程教学改革形势和应用型本科院校具体情况编写。本书基本概念讲解清楚，从培养学生的应用能力出发，注重加强基本理论与实践应用、知识传授与能力培养的有机结合。本书昀大的特点是所有的知识点都配有教学视频、电子课件，每一节配有在线测试，每一章配有综合测试。本书还配有各章的小结视频和各章的测试题讲解视频。通过扫描二维码就可以观看视频、完成在线测试并实时查看测试结果以及参与交流讨论等。本书可作为本科院校和高职院校电气与电子信息类各专业及其他相近专业的教材，也可用于翻转课堂教学或供相关科技人员参考。

本书是浙江省普通高校“十三五”新形态教材建设项目的研究成果，与浙江省精品在线开放课程《电路分析基础》相配套。它以纸质教材为基础，将多种类型的数字化教学资源（微课、课件、题库、在线测试等）通过二维码技术与文本紧密关联，支持学生通过移动终端随时随地进行学习。本书既突出了有关知识点的叙述，又兼顾了课程内容的完整性和系统性，在不增加纸质教材的篇幅和成本的同时，大大丰富和提升了教材的内涵。因此，本书不仅适用于传统方法教学，同时还适用于 MOOC教学需求。 本教材是为普通本科院校和高职院校电子信息类、电气自动化类、通信类、控制类等专业及其他相关专业的本科学生编写，根据应用型院校学生的知识基础和认知规律组织内容。在内容选材上立足于“加强基础、学以致用、突出重点、联系实际”的原则，在文字叙述上力求做到思路清晰、语言通俗易懂，方便学生自学和教师授课。 为满足“应用型人才”的培养需求，本书在编写过程中注重结合工程实践，在每一章的昀后都增加一节介绍电路理论的应用实例，将电路理论和实践应用有机结合起来，帮助学生建立起研究实际电路问题的思维模式和兴趣，培养学生的工程意识。本书所配例题具有典型性并能适当兼顾工程实际，还配有一定数量、难易适当的习题，并在书中给出了大部分习题的参考答案，以供读者选用。书中正文、例题、习题密切结合，便于读者自学，以适应启发性教学方法的需要。 本书内容丰富，资源充足。所有的知识点都配有微课视频、电子课件，每一节配有在线测试，每一章配有综合测试及讨论答疑区。本书还提供各章的小结视频和各章的测试题讲解视频。本书共有视频 107个，单元测试 52个，章节综合测试 11个（题量超过 500题）。扫描二维码就可以观看视频、完成在线测试并实时查看测试成绩以及参与线上交流讨论等。因此，该书不仅有助于培养学生的自主学习能力，同时特别适合开展翻转课堂、混合式教学等新型教学模式。 本书在编写过程中，参考了许多教材，这些资料均在参考文献中列出，在此对这些教材的作者表示衷心的感谢。课程组教师潘兰芳老师也对本书提出许多宝贵意见，在此表示感谢。 由于编者水平和能力有限，书中难免有不足或错误之处，敬读者不吝赐教，批评指正。 编者 2017年 6月

第 1章电路的基本概念与基本定律·························································· 1 1.1电路的组成与电路模型 ············································································ 1 1.1.1 电路的组成及其作用 ········································································· 1 1.1.2 电路模型 ························································································ 2 1.2电路的基本物理量 ·················································································· 3 1.2.1 电流 ······························································································ 3 1.2.2 电压和电位 ····················································································· 5 1.2.3 功率 ······························································································ 7 1.3基尔霍夫定律 ························································································ 8 1.3.1 基尔霍夫电流定律 ············································································ 9 1.3.2 基尔霍夫电压定律 ··········································································· 10 1.4无源元件 ····························································································· 12 1.4.1 电阻元件 ······················································································· 12 1.4.2 电容元件 ······················································································· 14 1.4.3 电感元件 ······················································································· 16 1.5有源元件 ····························································································· 18 1.5.1 独立电源 ······················································································· 18 1.5.2 受控电源 ······················································································· 20 1.6应用实例 ····························································································· 23 1.6.1 电吹风机 ······················································································· 23 1.6.2 汽车油箱油量检测电路 ····································································· 25 本章小结 ··································································································· 26 习题 1 ······································································································· 28 第 2章电路的等效变换 ······································································32 2.1二端网络等效的概念 ·············································································· 32 2.2电阻的等效变换 ···················································································· 33 2.2.1 电阻的串并联等效变换 ····································································· 33 2.2.2 电阻的 Y-△等效变换 ······································································· 35 2.3电源的等效变换 ···················································································· 37 2.3.1实际电源的两种模型及其等效变换 ······················································ 37 2.3.2 理想电源的串并联等效 ····································································· 39 2.4电路的等效分析 ···················································································· 41 2.5无源二端网络的等效电阻 ········································································ 42 2.6应用实例 ····························································································· 43 2.6.1直流电表的设计 ·············································································· 43 2.6.2 惠斯通电桥电路 ·············································································· 45 本章小结 ··································································································· 46 习题 2 ······································································································· 48 第 3章电路的基本分析方法·································································52 3.1支路电流法 ·························································································· 52 3.1.1 两类约束和电路方程 ········································································ 52 3.1.2 支路电流方程的列写 ········································································ 53 3.1.3 含受控源的支路电流方程 ·································································· 54 3.2网孔电流法与回路电流法 ········································································ 55 3.2.1 网孔电流方程的标准形式 ·································································· 55 3.2.2 含电流源的网孔电流方程 ·································································· 56 3.2.3 含受控源的网孔电流方程 ·································································· 57 3.2.4 回路电流法 ···················································································· 58 3.3节点电压法 ·························································································· 58 3.3.1 节点电压方程的标准形式 ·································································· 58 3.3.2 含纯理想电压源支路的节点电压方程 ··················································· 61 3.3.3 含受控源的节点电压方程 ·································································· 63 3.4应用实例 ····························································································· 64 本章小结 ··································································································· 66 习题 3 ······································································································· 66 第 4章电路的基本定理 ······································································70 4.1叠加定理 ····························································································· 70 4.1.1 叠加定理的基本内容 ········································································ 70 4.1.2 应用叠加定理的注意事项 ·································································· 71 4.1.3 线性电路的齐次性与可加性 ······························································· 72 4.2替代定理 ····························································································· 74 4.3等效电源定理 ······················································································· 75 4.3.1 戴维南定理 ···················································································· 75 4.3.2 诺顿定理 ······················································································· 79 4.4昀大功率传输定理 ················································································· 81 4.5特勒根定理和互易定理 ··········································································· 83 4.5.1 特勒根定理 ···················································································· 83 4.5.2 互易定理 ······················································································· 86 4.6应用实例 ——数/模转换器 ······································································· 89 本章小结 ··································································································· 91 习题 4 ······································································································· 92 第 5章正弦稳态电路的分析·································································96 5.1正弦量的基本概念 ················································································· 96 5.1.1 频率与周期 ···················································································· 97 5.1.2 振幅与有效值 ················································································· 97 5.1.3 初相位 ·························································································· 98 5.2正弦量的相量表示法 ············································································ 100 5.2.1 复数及其运算 ··············································································· 100 5.2.2 相量的概念 ·················································································· 102 5.2.3 相量图 ························································································ 103 5.2.4 相量的运算性质 ············································································ 104 5.3两类约束的相量形式 ············································································ 105 5.3.1 基尔霍夫定律的相量形式 ································································ 105 5.3.2 电路元件伏安关系的相量形式 ·························································· 106 5.4无源单口网络的阻抗 ············································································ 110 5.4.1 阻抗的概念 ·················································································· 110 5.4.2 阻抗的串联和并联 ········································································· 112 5.4.3 电路的相量模型 ············································································ 114 5.5正弦稳态电路的相量法分析 ··································································· 115 5.5.1 简单交流电路的分析 ······································································ 115 5.5.2 复杂交流电路的分析 ······································································ 119 5.6正弦交流电路的功率 ············································································ 121 5.6.1 瞬时功率 ····················································································· 121 5.6.2 平均功率和功率因数 ······································································ 122 5.6.3 无功功率 ····················································································· 123 5.6.4 视在功率 ····················································································· 124 5.6.5 复功率 ························································································ 127 5.6.6 电路功率因数的提高 ······································································ 128 5.6.7 正弦交流电路中的最大功率传输 ······················································· 130 5.7电路的频率响应 ·················································································· 132 5.7.1 网络函数和频率特性 ······································································ 132 5.7.2 RC低通滤波电路 ·········································································· 133 5.7.3 RC高通滤波电路 ·········································································· 134 5.8谐振电路 ··························································································· 135 5.8.1 串联谐振 ····················································································· 135 5.8.2 并联谐振 ····················································································· 138 5.9应用实例 ··························································································· 140 5.9.1 日光灯电路 ·················································································· 140 5.9.2 收音机调谐电路 ············································································ 141 5.9.3 按键式电话机 ··············································································· 142 5.9.4 交叉网络 ····················································································· 143 本章小结 ································································································· 144 习题 5 ····································································································· 147 第 6章耦合电感和理想变压器 ·····························································151 6.1耦合电感 ··························································································· 151 6.1.1 互感 ··························································································· 151 6.1.2 耦合电感的伏安关系 ······································································ 152 6.1.3 耦合电感的同名端 ········································································· 153 6.1.4 耦合电感的等效电路模型 ································································ 155 6.2含耦合电感的正弦稳态电路的分析 ·························································· 156 6.2.1 直接列写方程法 ············································································ 156 6.2.2 去耦等效分析法 ············································································ 157 6.3空心变压器························································································ 162 6.4理想变压器 ························································································ 164 6.4.1 理想变压器的基本性质 ··································································· 164 6.4.2 含理想变压器的电路分析 ································································ 166 6.5应用实例 ··························································································· 167 6.5.1 变压器用做隔离装置 ······································································ 167 6.5.2 变压器用做阻抗匹配器 ··································································· 168 本章小结 ································································································· 169 习题 6 ····································································································· 170 第 7章三相电路·············································································174 7.1三相电源 ··························································································· 174 7.1.1 三相电源的产生 ············································································ 174 7.1.2 三相电源的连接 ············································································ 175 7.2对称三相电路 ····················································································· 177 7.2.1 负载 Y形连接 ··············································································· 177 7.2.2 负载△形连接 ··············································································· 179 7.3不对称三相电路·················································································· 181 7.3.1 负载 Y形连接 ··············································································· 181 7.3.2 负载△形连接 ··············································································· 183 7.4三相电路的功率 ·················································································· 184 7.4.1 平均功率 ····················································································· 184 7.4.2 无功功率 ····················································································· 184 7.4.3 视在功率 ····················································································· 185 7.4.4 瞬时功率 ····················································································· 185 7.4.5 三相功率的测量 ············································································ 186 7.5应用实例 ··························································································· 187 7.5.1 相序测定电路 ··············································································· 187 7.5.2 家庭电路 ····················································································· 188 7.5.3 三相电路实例分析 ········································································· 189 本章小结 ································································································· 190 习题 7 ····································································································· 192 第 8章非正弦周期电流电路································································194 8.1非正弦周期信号及其傅里叶级数展开 ······················································· 194 8.1.1 非正弦周期信号 ············································································ 194 8.1.2 非正弦周期信号的傅里叶级数展开 ···················································· 195 8.2非正弦周期信号的有效值和平均功率 ······················································· 196 8.2.1 非正弦周期信号的有效值 ································································ 196 8.2.2 非正弦周期电流电路的平均功率 ······················································· 197 8.3非正弦周期电流电路的分析 ··································································· 199 8.4应用实例 ··························································································· 201 本章小结 ································································································· 203 习题 8 ····································································································· 204 第 9章动态电路的时域分析································································206 9.1动态电路的暂态过程及换路定则 ····························································· 206 9.1.1 动态电路的基本概念 ······································································ 206 9.1.2 换路定则与电路初始值的确定 ·························································· 207 9.2一阶电路的零输入响应 ········································································· 209 9.2.1 一阶 RC电路的零输入响应 ····························································· 209 9.2.2 一阶 RL电路的零输入响应 ······························································ 211 9.3一阶电路的零状态响应 ········································································· 213 9.3.1 一阶 RC电路的零状态响应 ····························································· 213 9.3.2 一阶 RL电路的零状态响应 ······························································ 215 9.4一阶电路的全响应和三要素法 ································································ 217 9.4.1 一阶电路的全响应 ········································································· 217 9.4.2 一阶电路的三要素法 ······································································ 218 9.5阶跃函数和阶跃响应 ············································································ 222 9.5.1 阶跃函数 ····················································································· 222 9.5.2 阶跃响应 ····················································································· 223 9.6冲激函数和冲激响应 ············································································ 225 9.6.1 冲激函数 ····················································································· 225 9.6.2 冲激响应 ····················································································· 226 9.7二阶电路的零输入响应 ········································································· 229 9.7.1 二阶电路方程的建立 ······································································ 230 9.7.2 二阶电路零输入响应的形式 ····························································· 230 9.8应用实例 ··························································································· 236 9.8.1 冰箱延时保护电路 ········································································· 236 9.8.2 积分电路和微分电路 ······································································ 236 9.8.3 方波发生电路 ··············································································· 237 9.8.4 闪光灯电路 ·················································································· 238 本章小结 ································································································· 240 习题 9 ····································································································· 242 第 10章双口网络 ···········································································245 10.1双口网络的基本概念 ·········································································· 245 10.2双口网络的参数方程 ·········································································· 246 10.2.1 阻抗方程与 Z参数 ······································································· 246 10.2.2 导纳方程与 Y参数 ······································································· 249 10.2.3 传输方程与 T参数 ······································································· 251 10.2.4 混合方程与 H参数 ······································································· 252 10.3含双口网络的电路分析 ······································································· 256 10.3.1 含双口网络的电路 ······································································· 256 10.3.2 双口网络的连接 ·········································································· 257 10.4线性双口网络的等效电路 ···································································· 261 10.4.1 互易双口网络的等效电路 ······························································ 261 10.4.2 非互易双口网络的等效电路 ··························································· 263 10.5应用实例 ························································································· 264 10.5.1 放大电路等效模型 ······································································· 264 10.5.2 阻抗匹配电路 ············································································· 265 本章小结 ································································································· 266 习题 10 ··································································································· 268 第 11章非线性电阻电路····································································272 11.1非线性电阻 ······················································································ 272 11.1.1 非线性电阻概述 ·········································································· 272 11.1.2 非线性电阻的静态电阻和动态电阻 ·················································· 273 11.1.3 非线性电阻的串联和并联 ······························································ 274 11.2非线性电阻电路的分析 ······································································· 275 11.2.1 解析法 ······················································································· 275 11.2.2 图解法 ······················································································· 276 11.2.3 分段线性化法 ············································································· 277 11.2.4 小信号分析法 ············································································· 279 11.3应用实例 ························································································· 282 11.3.1 限幅电路 ···················································································· 282 11.3.2 整流电路 ···················································································· 283 本章小结 ································································································· 283 习题 11 ··································································································· 284 习题答案

卢飒，女，副教授，就职于中国计量学院现代科技学院，教授电子、应用电子技术、电子实验等课程，具有丰富的教学经验。

http://www.hxedu.com.cn/hxedu/fg/book/bookinfo.html?code=G0316620