放大电路是一种常用的模拟电子电路,放大电路的分析是模拟电子技术中非常重要的内容,也是比较难理解、难讲述的内容。本文主要介绍了如何利用Protel99SE的平台对放大电路进行仿真,并根据仿真结果判断元件参数的变化范围,选择合适的元件设计放大电路。 Amplifier circuit is a commonly used analog electronic circuits, amplifier circuit analysis is a very important part of analog electronic technology, but also more difficult to understand, difficult to tell the content. This article mainly introduces how to use the platform of Protel99SE to simulate the amplifying circuit. According to the simulation result, we can judge the range of the parameters of the components and select the appropriate components to design the amplifying circuit.