Title :
Calibration of AC current from 10 µA to 1 mA AT 10 kHz
Author :
Liu Yue ; Zhang Xiu-Zeng ; Zhao Hong-Gang ; Zheng Lian-Ying ; Deng Lin
Author_Institution :
Div. of Electr. & Magnetics Metrol., Nat. Inst. of Metrol., Beijing, China
Abstract :
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.
Keywords :
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; Calibration; Impedance; Metrology; Operational amplifiers; Resistors; Uncertainty; Voltage measurement; AC current; AC voltage buffer; load effect; output impedance; sampling resistor;
Conference_Titel :
Precision Electromagnetic Measurements (CPEM), 2012 Conference on
Conference_Location :
Washington, DC
Print_ISBN :
978-1-4673-0439-9
DOI :
10.1109/CPEM.2012.6250725
