Title :
Comparison of three accurate methods to measure AC voltage at low frequencies
Author :
Kampik, Marian ; Laiz, Héctor ; Klonz, Manfred
Author_Institution :
Silesian Tech. Univ., Gliwice, Poland
fDate :
4/1/2000 12:00:00 AM
Abstract :
Three methods for the determination of the RMS value of AC voltage at low frequencies are compared: the step calibration of a digitally synthesized source, the optimized sampling method, and the AC-DC voltage transfer with a multijunction thermal converter. The three methods agree within 1×10-6 with an uncertainty of 2.5×10-8 in the frequency range from 10 to 100 Hz
Keywords :
calibration; digital voltmeters; direct digital synthesis; measurement uncertainty; signal sampling; transfer standards; voltage measurement; 10 to 100 Hz; AC voltage measurement; AC-DC voltage transfer; RMS value; accurate methods; digitally synthesized source; harmonics; low frequencies; multijunction thermal converter; optimized sampling method; optimum standard; sampling voltmeter; step calibration; uncertainty budget; Analog-digital conversion; Calibration; Digital-to-frequency converters; Frequency conversion; Frequency synthesizers; Low voltage; Optimization methods; Sampling methods; Uncertainty; Voltage measurement;
Journal_Title :
Instrumentation and Measurement, IEEE Transactions on
