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TitleQuantum Hall cryogenic current comparator resistance bridge
Publication TypeConference Paper
Year of Publication2000
AuthorsJones, K., and Early M.D.
Conference NameCPEM Digest (Conference on Precision Electromagnetic Measurements)
Date Published2000
KeywordsBridge circuits, Calibration, Comparator circuits, Cryogenic current comparators (CCC), Cryogenic equipment, Electric resistance measurement, Magnets, Quantum Hall effect (QHE), Quantum theory, Semiconducting gallium arsenide, Servomechanisms
AbstractA cryogenic current comparator (CCC) bridge for measuring quantum Hall resistance standards is described. The necessity for a full build-up calibration of the CCC is demonstrated and a model of the servo system for controlling the bridge is given.

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