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《Crustal Deformation and Earthquake》 2001-02
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PROGRAMING FEEDBACK AMPLIFYING CIRCUIT OF FEEBLE SIGNAL

Wang Desheng and Ni Huanming (Institute of Seismology,CSB, Wuhan 430071)  
In general, it is difficult fixed gain magnifier to achieve the vast scale and high precision of feeble signal at the same lime. This paper introduces a special amplifying circuit which can vary the gain from 2 0 to 2 3 in allusion to AD526 chip, throwing out of the traditional method. This circuit can change the gain in a wink and obtain high precision with vast scale. This circuit can play important role in signal processing before A/D.
【Fund】: 中国地震局“九·五项目”(95 -0 4 -0 1 -0 1 -1 3 )部分成果
【CateGory Index】: TN72
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【Citations】
Chinese Journal Full-text Database 1 Hits
1 ;The Floating-point Amplifier with 2~0~2~8 Gains[J];CONTROL & AUTOMATION;2000-01
【Co-references】
Chinese Journal Full-text Database 2 Hits
1 ZHAO Bin, KUANG Lihong ( College of Information Technology, Heilongjiang August First Agriculture University; College of Engineering, Heilongjiang August First Agriculture University, 158308, Mishan, Heilongjiang, China);Application of SPGA AD526 in strain measurement[J];Journal of Heilongjiang Institute of Science;2003-03
2 Wen\ Yuzhuang (Dept.of Physics,Chongqing Education Institute,Chongqing 400067);Methods for acquiring signals out of the conductanco-linearised sensor[J];Journalof Southwest China Normal University(Natural Science);2000-02
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