文档介绍：课程模拟电子技术论文院系:物电学院专业:自动化班级: 1211 自动化学生姓名:秦宏涛学号: 2012118054 任课老师:罗倩倩 2015 年 10月 9日 Negative F eedback A mplifying C ircuit of Analog Electronic Technology Qin Hongtao Hubei University of Arts and Science,,441053 1106955858@ Abstract:this paper introduces the basic conception of negative feedback amplifying circuit,talking about the negative feedback ’s type,function and importance. Key words:negative feedback amplifying circuit ,amplification factor,effect of circuit . 1 Introduction In 1934,the first article on negative feedback technology to improve the importance of the paper was published ,with the wide application of nagative feedback technology,the performance of the amplifying circuit is greatly improved ,so negative feedback is very important in electronic technology ,almost all of the amplifying circuits are used for negative feedback. For the diversity of the function of negative feedback amplifier,we should know the function of different kinds of negative feedback 2 Methods and Materials Definition of negative feedback The so-called feedback is part or all of the output of the amplifier echo to the amplifer input circuit ,through work,and participate in the input cortrol of the amplifier with input signal,to improve the performance of the amplifier. When the input signal is superimposed with the feedback signal,the signal is actually added to the basic amp