浅议放大电路反馈类型的判别

A Brief Comment on Judging the Types of Amplification Circuit

在电子技术中,放大电路的应用十分广泛,特别是含负反馈的放大电路,不仅可以拓宽放大信号的通频带,而且能提高输出的稳定度,改善电路的工作性能。笔者结合多年的教学经验,从三极管的特性入手,分析了反馈极性和类型的判别,并提供了一些简捷快速的判别方法,以便对电路的性能有更好的了解,更易于学生对放大电路的掌握。

In the electronic technology, amplification circuit is widely used, especially amplification circuit with negative feedback. Amplification circuit with negative feedback can not only broaden cut-off frequency of the amplification signals, but also stabilize circuit amplification times and improve the circuit working property. The article is connected with the experience of many years teaching of the author. The article begins with the property of triode, to analyze the judgments of feedback polarity and types as well as provides some simple and quick methods so that people can understand the circuit property better and easily master amplification circuit.