Title :
A 600-V AC voltage amplifier for power measurements
Author :
Waltrip, B. ; Laug, O. ; Nelson, T.
Author_Institution :
Nat. Inst. of Stand. & Technol., Gaithersburg, MD, USA
Abstract :
A voltage amplifier comprised of three, cascaded, -10:1 gain sections has been developed to extend the voltage range of primary electric power calibrations from 120 V to 600 V over the 50 Hz to 400 Hz frequency range. The gain and phase errors of each amplifier section are continuously measured and corrected in-situ using a permuting impedance measurement technique. The amplifier design approach, measurement principles, and initial performance results are presented.
Keywords :
amplifiers; calibration; electric impedance measurement; error correction; measurement errors; measurement standards; power measurement; voltage measurement; AC voltage amplifier design approach; frequency 50 Hz to 400 Hz; gain error measurement; permuting impedance measurement technique; phase error measurement; power measurement; primary electric power calibration; voltage 120 V to 600 V; Decision support systems; Hafnium; Calibration; error correction; feedback amplifier; measurement standards; measurement techniques; power measurement; voltage measurement;
Conference_Titel :
Precision Electromagnetic Measurements (CPEM 2014), 2014 Conference on
Conference_Location :
Rio de Janeiro
Print_ISBN :
978-1-4799-5205-2
DOI :
10.1109/CPEM.2014.6898268
