An improved current-comparator-based 1000-A transconductance amplifier for the in-situ calibration of transformer loss measuring systems

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DOIResolve DOI: http://doi.org/10.1109/61.252614
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TypeArticle
Proceedings titleIEEE Transactions on Power Delivery
Conference1992 IEEE Power Engineering Society Summer Meeting, July 12-16, 1992, Seattle, Washington, USA
ISSN0885-8977
Volume8
IssueJuly 3
Pages861865; # of pages: 5
AbstractA current comparator technique and an error feedforward control strategy are applied to the design of a high current transconductance amplifier to obtain a highly stable and accurate output current. The transconductance amplifier features a current output range of 1000 A with a compliance voltage of 3 V. It has the ability to provide a highly accurate current to a circuit that is operated at high voltage. This high-current transconductance amplifier is used in a system for the in-situ calibration of transformer loss measuring systems. The output current has accuracies of better than +or-10 ppm (parts-per-million) in both magnitude and phase.
Publication date
LanguageEnglish
AffiliationNRC Institute for National Measurement Standards; National Research Council Canada
Peer reviewedYes
NRC number1558
NPARC number5764518
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Record identifierdb486502-4ba7-4497-9fed-7784806f41fb
Record created2009-03-29
Record modified2016-05-09
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