有关放大线路的分析方法

Analysis Methods About Amplifier Circuit

放大线路是非线性电路。因为构成其电路的电子元件是非线性元件。要用他对信号进行不失真地放大 ,必须设置适当的工作点 ,使电子器件工作在近似线性区域 ,这就决定了放大器的分析包括直流分析和交流分析。而非线性器件对直流信号和交流信号所呈现的性能不同 ,这就是放大器分析与一般线性电路分析的不同之处 ,当对放大器进行小信号分析时 ,其电路模型又是线性的。

The amplifier circuit is nonlinear circuit. Because its device consists of nonlinear device.It must be set up suitable quiescent point in order to works in linear region. This decides that the analysis of amplifier includes direct current analysis and alternating current analysis.But nonlinear device has different property to direct current signal and alternating current signal.This is different analysis method of the amplifier analysis and linear circuit. When the amplifier is analized in small signal,its circuit model is linear.But it is important for amplifier circuit to analized its nonlinear property.