叠加原理在电子线路分析中的应用探析

Application of Superposition Principle in Analyzing Electronic Circuits

叠加原理是线性电路常用的分析方法之一,是电路理论教学中的重要内容。通常,这部分的教学重点在线性电路以及含有受控源线性电路的分析,不涉及包含三极管的近似线性电路的分析,导致学生在后续电子线路课程中质疑或误用该原理。本文以基本放大电路、集成运算放大电路和多谐振荡器电路为例,就叠加原理的应用方法与范围进行分析,总结出叠加原理在近似线性电路的适用范围。文章对叠加原理内容的教学有一定的指导作用。

Superposition Principle is one of analysis methods of linear circuit, which is an essential part of teaching electric circuit theory. Generally, the teaching of this part is mainly focused on analysis of the linear circuit and the circuit containing signal controlled source, while the analysis of the approximate linear circuit containing triode is ignored. Influenced by this teaching method, students often dispute the analysis method of superposition principle and apply the superposition principle incorrectly when analyzing approximate linear circuits. Taking amplifying circuit, integrated operational amplifier and multi-vibrator as examples, this paper has analyzed the application methods and application scenarios of superposition principle, and has drawn some conclusion of the application range of superposition principle. This paper can serve as a significant guide in the teaching of superposition principle.