不含独立源的入端电阻求解方法探讨  

Study of the input resistance in the circuit without independent source

作　　者：王韦刚[1] 涂真珍 WANG Wei-gang;TU Zhen-zhen(College of Electronic and Optical Engineer,Nanjing University of Posts and Telecommunications,Nanjing,Jiangsu 210023,China;College of Material Engineer,Nanjing University of Posts and Telecommunications,Nanjing,Jiangsu 210023,China)

机构地区：[1]南京邮电大学电子与光学工程学院,江苏南京210023 [2]南京邮电大学材料科学与工程学院,江苏南京210023

出　　处：《大学物理》2018年第4期11-15,共5页College Physics

基　　金：南京邮电大学校科研项目(NY215164);南京邮电大学教改项目(JGO3316JX68);江苏高校品牌专业建设工程项目(TAPP)资助

摘　　要：只含有电阻或受控源,不含独立源的一端口网络,想要求解其内部的等效电阻,分为纯电阻电路和含受控源电路两类情况.对于纯电阻电路,本文提出了"打点找路"法求解;对于含受控源电路,可分别用外接激励法和内接激励法求解.外接激励法有经典的"加压求流"法和"加流求压"法;对于内接激励法,提出了"开路短路"法这一新方法.The one port network which only contains resistors or controlled sources,not including independent source,can be divided into pure resistors circuit and controlled sources circuits.As to pure resistors circuit,we propose a method of“searching roads by marking points”.As to the circuit with controlled sources,it can be resolved by the external excitation method and internal excitation method.External excitation method includes the traditional method of“calculating current by inputting voltage”and“calculating voltage by inputting current”.As to internal excitation method,we also propose a new method named“open-short”.

关 键 词：打点找路法 外接激励法 内接激励法 

分 类 号：O441.1[理学—电磁学]