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Impedance Bridge Ratio Transformer Calibration by Reference-Step Conductance Build-Up

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1 Author(s)
Corney, A.C. ; Meas. Stand. Lab., New Zealand Ind. Res. Ltd., Lower Hutt

A reference-step conductance build-up method suitable for automation has been developed for calibrating the ratio dial transformer of a wide-range impedance bridge. The uncertainties over the range 40 Hz to 20 kHz are estimated not to exceed 0.2 muV/V referred to the divider input voltage. At 100 kHz, the uncertainties do not exceed 2muA7V

Published in:

Precision Electromagnetic Measurements Digest, 2004 Conference on

Date of Conference:

June 2004