含运算放大器电路的图解分析  

Graphic Analysis on Circuits with Operational Amplifiers

作　　者：田社平[1] 陈洪亮[1] 

机构地区：[1]上海交通大学电子信息与电气工程学院,上海200240

出　　处：《电气电子教学学报》2012年第1期90-92,104,共4页Journal of Electrical and Electronic Education

基　　金：上海交大-上海辛克联合研发中心资助项目(001)

摘　　要：运算放大器在工作时具有两种状态:线性状态和非线性状态,分别对应其输入—输出特性的线性区和正、负饱和区。本文采用图解分析法讨论了含运算放大器电路的解及其解的特性,指出含运算放大器电路如采用负反馈接法,则其解唯一且稳定;如采用正反馈接法,则其稳定工作状态必为非线性状态。对教学中加入含运算放大器电路接法的教学内容,本文给出一些教学建议。Operational amplifiers （OAs） have two operating states： linear state and nonlinear state which corre- sponds the linear region, positive and negative regions of the characteristics of OAs. Graphic analytic method is applied on solution and its characteristic of circuits with OAso It concludes that the solution of circuits with OAs is unique if the configuration of negative feedback is adopted and the operating state of circuits with OAs is bound to nonlinear region if the Configuration of positive feedback is adopted. Some suggestions on teaching of con- nection of circuits with OAs are given

关 键 词：运算放大器 反馈 工作状态 图解分析法 

分 类 号：TM13[电气工程—电工理论与新技术]