Absolute Measurement of Low-Voltage Capacitor Voltage Coefficient by Double Voltage Method
The voltage coefficient of low voltage capacitor is the most important fact that affects the accuracy degree of capacitance value of capacitor.Its value and feature must be measured out when it used in the high accuracy situation.This paper presents an absolute double voltage measure method that gets the absolute voltage coefficient curve from 0 V to 1000 V needs only 5-step measurement.And proposed the related compensate measures and methods against the possible problems in measure system.After compensation, the measure error is only related to the accuracy of current comparator bridge.In this paper the measurement uncertainty is about 1 x 10-6 when ignore the linear fitting error.
voltage coefficient double voltage method low-voltage precision capacitor voltage ratio
Li Wenfeng Li Dong Shao Haiming Li Yanqiang Zhang Huanghui
Department of Instrumentation Science and Opto-electronics Engineering,University of Beijing Information Science and Technology No.12 Qing He Xiao Ying Dong Lu,Haidian Dist,Beijing,China
国际会议
哈尔滨
英文
429-433
2013-08-16(万方平台首次上网日期,不代表论文的发表时间)