一种单管放大电路失真分析及实验  

Distortion Analysis and Experimental Design of a Single Transistor Amplifi er Circuit

作　　者：刘恒[1] 冉莉 孙冬娇[1] 刘建成[1] Liu Heng;Ranli;Sun Dongjiao;Liu Jiancheng(College of Electronic&Information Engineering,Nanjing University of Information&Technology,Nanjing,210044,China)

机构地区：[1]南京信息工程大学电子与信息工程学院,江苏南京210044

出　　处：《中国现代教育装备》2021年第7期23-26,共4页China Modern Educational Equipment

基　　金：江苏省高等教育教改立项研究课题《新工科背景下电子信息专业多元协同育人模式的探索与实践》(编号:2019JSJG261);江苏高校品牌专业建设工程二期项目(电子信息工程)。

摘　　要：针对教学中学生常对单管放大电路输入信号幅值与静态工作点对输出波形失真的问题,利用电路分析理论,近似估算了单管共射极放大电路静态工作点对应的参数值,并利用微变信号等效法分析了放大电路的交流特性。利用Multisim软件仿真和硬件实验测试,实验设计让学生更好掌握单管放大电路相关知识。Aiming at the infl uence of input voltage and static operation point on output waveform distortion of single transistor amplifi er circuit,the parameters corresponding to the static operation point of single transistor common emitter amplifi er circuit are approximately estimated by theoretical analysis,and the phase difference of input and output waveform corresponding to cut-off and saturation distortion is analyzed by drawing method and micro-variation signal equivalent method.The analysis is verifi ed by Multisim software simulation and hardware experiment.Different types of distortion are related to the dynamic voltage confi guration of single tube.

关 键 词：放大电路 失真 静态工作点 仿真 

分 类 号：TN710-4[电子电信—电路与系统] G642.423[文化科学—高等教育学]