Excitation Frequency Effect of Differential Capacitance Transducer for Equivalence Principle Test
ZHOU Ze-Bing, DONG Ying-Jie, TIAN Yu-Long, QIN Dan, LUO Jun
Department of Physics, Huazhong University of Science and Technology, Wuhan 430074
Excitation Frequency Effect of Differential Capacitance Transducer for Equivalence Principle Test
ZHOU Ze-Bing;DONG Ying-Jie;TIAN Yu-Long;QIN Dan;LUO Jun
Department of Physics, Huazhong University of Science and Technology, Wuhan 430074
关键词 ：
04.80.Cc ,
07.07.Df
Abstract ：We discuss effects of the excitation frequency in an ac bridge differential capacitance transducer for the equivalence-principle test on the frequency-dependent characteristics of a practical operational amplifier, the thermal noise limitation, and stray-immune. Basic requirements of choosing the excitation frequency of the ac bridge capacitance transducer are given based on the three effects, which are significant for designing a capacitance transducer and choosing proper electric elements.
Key words ：
04.80.Cc
07.07.Df
出版日期: 2004-07-01
:
04.80.Cc
(Experimental tests of gravitational theories)
07.07.Df
(Sensors (chemical, optical, electrical, movement, gas, etc.); remote sensing)
引用本文:
ZHOU Ze-Bing;DONG Ying-Jie;TIAN Yu-Long;QIN Dan;LUO Jun. Excitation Frequency Effect of Differential Capacitance Transducer for Equivalence Principle Test[J]. 中国物理快报, 2004, 21(7): 1208-1211.
链接本文:
https://cpl.iphy.ac.cn/CN/
或
https://cpl.iphy.ac.cn/CN/Y2004/V21/I7/1208
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2004, Vol. 21 
