也谈负反馈的讲授方法——对“对负反馈讲法问题的探讨”一文的商榷

Also talk about the instruction method of negative feedback circuits (-Discuss with the Paper “Deliberation over the Instruction Problem of Negative Feedback”)

本文对《电气电子教学学报》第 2 0卷第 3期中的“对负反馈讲法问题的探讨”一文中的某些不妥之处提出异议 ,阐明了对于不同的教育对象 ,负反馈的讲法宜采用不同方法 ,强调结合集成运算放大器的线性应用电路讲解负反馈 ,同时指出了集成运算放大器的“虚短路”概念与深度负反馈的本质关系。

This article raises an objection against some not proper viewpoints in the paper “Deliberation over the Instruction Problem of Negative Feedback”in Journal of Electrical and Electronic Education,Vol.20,No.3.It clarifies that the different instruction method should be considered for different student and stresses on using the linear application circuits of integrated operational amplifier to analyze negative feedback.It also points out the internal relations between the concept of “virtual short circuit”of integrated operational amplifier and the deep negative feedback.