摘要
大多数电子线路教材没有讨论负反馈环内-外电路串/并联型式对推导负反馈放大电路输入电阻的影响,导致学生在学习中出现了输入电阻分析不完全正确的问题。本文针对上述问题,给出了反馈放大电路的环内和环外电路的划分,并针对环内-外不同的串/并联型式,用理论方法分析比较得出负反馈放大电路输入电阻正确的计算方法。
In most textbooks of Electronic Circuit,its not describe the division of the inner-loop and the outer-loop of an negative feedback amplifier circuit,and students may potentially not get entirely correet results in the input resistance analysis. To solve the problem,this paper divides these connecting modes of inner-loop and outer-loop into four types,and then presents theoretical analysis and comparisons for the consistent computing methods about the input resistance of negative feedback amplifier circuit.
出处
《电气电子教学学报》
2016年第2期60-62,95,共4页
Journal of Electrical and Electronic Education
关键词
放大电路
反馈环
输入电阻
amplifier circuit
feedback loop
input resistance
