姜春阳,刘浩,周峰,殷小东,袁建平,李明.有源电容式分压器的研制[J].电测与仪表,2019,56(6):148-152. Jiang Chunyang,Liu Hao,Zhou Feng,Yin Xiaodong,Yuan Jianping,Li Ming.The development of an active capacitive voltage divider[J].Electrical Measurement & Instrumentation,2019,56(6):148-152.
有源电容式分压器的研制
The development of an active capacitive voltage divider
The traditional active capacitive voltage divider has some designing difficulties, such as high input impedance and equipotential shielding. Therefore, a new type of active capacitive voltage divider is designed in this paper, including standard capacitor and active low voltage capacitor in series. This paper focuses on the design of active low voltage capacitor. The dielectric loss control designing an resistance and capacitance network with the style of an “double T” and the design of the control of common mode signal suppression are the key to the this capacitive voltage divider. Moreover, the reasonable selection of electronic components helps the low voltage capacitor response smoothly to both high and low frequency. According to the actual test results, the error of the active capacitive voltage divider is better than 0.01% under the working frequency condition.
