程控滤波器实验模块设计

A Design of the Test Model for Program Controlled Filters

电路中通常使用各种滤波器滤除杂波,提取目的信号,最基本的有源滤波器由放大器和RC电路组成。为了简单的表现出有源滤波器的连接组成,同时方便的对其参数进行调节对比,文章提出一种使用数字电位器的有源低通滤波器实验方案,帮助学生深入了解滤波器构成并能方便调节滤波器参数从而观察实验结果。

In order to get the necessary signals , we usually use filters to remove other waves .The most essential active filters are com-prised of amplifiers and RC circuits , In order to present the composite of active filters , conveniently adjust and compare their parame-ters, the paper proposes a test scheme of action low -pass filter with digital potentiometer , to help students to understand the composite of filters and their adjustment .