Calibration of AC current from 10 µA to 1 mA AT 10 kHz

Yue Liu,Xiuzeng Zhang,Honggang Zhao,Lianying Zheng,Lin Deng

Precision Electromagnetic Measurements（2012）

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摘要

New AC current calibration equipment is developed, including high output impedance AC current sources, sampling resistors and AC voltage buffers, which is designed for calibrating AC current from 10μA to 1mA, at up to 10kHz. The output impedance of the AC current source is adequate enough to adapt to most of the resistance load. The AC current source is connected to the sampling resistor with a very short wire, and is connected to UUT with a very short wire as well. The calibration uncertainty can be estimated as 68ppm, k=2.

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关键词

calibration,electric current measurement,measurement uncertainty,resistors,wires (electric),ac current calibration equipment,ac voltage buffer,uut,calibration uncertainty,current 10 mua to 1 ma,frequency 10 khz,high output impedance ac current source,resistance load,sampling resistor,very short wire,ac current,load effect,output impedance,metrology,operational amplifiers,impedance,uncertainty

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