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9. Uncertainty Evaluation in a Two-Terminal Cryogenic Current Comparator.

Author

Bierzychudek, M. E. and Elmquist, R. E.

Subjects
*CRYOELECTRONICS, *COMPARATOR circuits, *LOW temperature engineering, *ELECTRIC resistors, *QUANTUM Hall effect, *QUANTUM theory, *SPECTRUM analysis, *SUPERCONDUCTIVITY, *INTEGRATED circuits
Abstract

We present an uncertainty evaluation of a new cryogenic current comparator (CCC) bridge that is designed to compare two-terminal 1 and 10 MΩ standard resistors with the quantized Hall resistance (QHR) and scale from these decade values to other decade values between 10 kΩ and 1 GΩ Use of the bridge over a wide range of resistance values results in a spectrum of dominant contributions to the uncertainty budget, and this analysis helps determine the optimum parameters of the measurements. Our theoretical analysis is compared with experimental data. [ABSTRACT FROM AUTHOR]

Published
2009
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