Design of Variable Gain Amplifier Circuit Based on Newton Rings Stress

被引：0

作者：

Guo, Changli ^{[1
]}

Wang, Shouquan ^{[2
]}

Chai, Yu ^{[3
]}

Guo, Zhaoxia ^{[1
]}

机构：

[1] Xian Univ Sci & Technoligy, Coll Sci, Xian, Peoples R China

[2] Xian Univ Sci & Technoligy, Coll Sci, Linyi, Peoples R China

[3] Xian Univ Sci & Technoligy, Elect Engn & Automat, Xian, Peoples R China

来源：

PROCEEDINGS OF THE INTERNATIONAL CONFERENCE ON CHEMICAL, MATERIAL AND FOOD ENGINEERING | 2015年 / 22卷

关键词：

gain variable; Amplifier circuit; instrumentation; newton rings; INA128;

D O I：

暂无

中图分类号：

TP [自动化技术、计算机技术];

学科分类号：

0812 ;

摘要：

On the purpose of measuring Newton rings deformation stress and the intelligentialize of the newton rings apparatus, a Variable Gain Amplifier circuit which is based on a low power, general purpose instrumentation amplifiers INAl28 offering excellent accuracy was designed to amplify the low frequency and voltage signal from the Pressure sensor. The principle of circuit and the information of chips used were introduced detailedly. Intermediately, problem which appeared in the program of the design had been figured out. Finally, test the performance of the circuit and analyze the experimental data with MATLAB, results were as follws, when the gain is equal to 33.97dB(Magnified 50 times),the bandwidth is up to 599kHz; when the gain is equal to 40dB(Magnified 100 times),the bandwidth is up to 250kHz; when the gain is equal to 53.98dB(Magnified 500 times),the bandwidth is up to 39kHz.

引用

页码：834 / 837

页数：4

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