TRACEABILITY CHAIN OF THE CAPACITANCE UNIT TO QUANTUM HALL EFFECT AT INMETRO - FOUR-TERMINAL COAXIAL BRIDGE

Renata Barros e Vasconcellos, Luiz Macoto Ogino

Abstract

This paper describes the development of a four-terminal coaxial bridge, part of the traceability chain of the capacitance unit to the quantum Hall effect, in construction at Inmetro. This bridge will also be used to calibrate AC resistance and high-value capacitance standards. Here we describe the final construction stages and preliminary measurements of the four-terminal coaxial bridge. We also describe the bridge main transformers, grounding scheme, and AC resistance standards.

Keywords

electrical metrology, coaxial current bridges, impedance measurements

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IMEKO-WC-2009-TC4-097.pdf

DOI

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IMEKO TC

TC4 - Measurement of Electrical Quantities

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