从电子滤波器看元件的非理想性质

Non-ideal Properties of Components from Electronic Filter

“电子技术基础”是实践性很强的课程,初学者往往不能理解电路的精髓。本文以电子滤波器为例,指出实际电路和理想电路的差异,元器件的非理想、非线性等因素对于电路性能指标的影响。对电子滤波器原理进行了分析,也进行了计算机仿真和实验验证,电子滤波器的滤波效果只有在一定条件下才能成立。本文对学生理解电子元件的参数特性有一定的参考价值。

The course of Electronic Technology Foundation is a very practical,and beginners often cannot understand the essence of the circuit.In this paper,an electronic filter is taken as an example to point out the difference between the actual circuit and the ideal circuit,and the influence of non-ideal and nonlinear factors on the circuit performance index.The principle of the electronic filter is analyzed,and the computer simulation and experimental verification are also carried out.The filtering effect of the electronic filter can only be established under certain conditions.This paper has certain reference for students to understand the parameter characteristics of electronic components.