| 程控放大滤波器的设计 |
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| 引用本文： | 黄茂三.程控放大滤波器的设计[J].漳州师院学报,2008(3):47-50. |
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| 作者姓名： | 黄茂三 |
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| 作者单位： | [1]漳州市电子信息产业办公室,福建漳州363000 |
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| 摘 要： | 提出采用数字电位器调节反馈电阻的方法,可以方便实现数十种,甚至数百种不同的放大倍数的程控放大器;采用数字电位器调节电阻配合继电器切换不同的电容,可以使巴特沃思滤波器的截止频率可受程序控制,截止频率种类多达数百种,且电路简单.
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| 关 键 词： | 程控 放大器 滤波器 数字电位器 |
The Design of Amplifier and Filter by Controlling of Program |
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| HUANG Mao-san.The Design of Amplifier and Filter by Controlling of Program[J].Journal of ZhangZhou Teachers College(Philosophy & Social Sciences),2008(3):47-50. |
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| Authors: | HUANG Mao-san |
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| Institution: | HUANG Mao-san (The Office of Electronic Information in Zhangzhou, Zhangzhou, Fujian 363000, China) |
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| Abstract: | In this paper, we will introduce the design of amplifier by controlling of program. The amplifier＇s magnification ratio can be regulated by program. The amplifier＇s magnification ratio has several hundreds. The amplifier＇s feedback resistance is digital potentiometer. We will also introduce Butterworth wave filter base on digital potentiometer. The filter＇s cut-off frequency can be regulated by program. The filter＇s cut-off frequency has several hundreds by regulating resistance and capacity. The filter＇s circuit is simple. |
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| Keywords: | controlling of program amplifier wave filter digital potentiometer |
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