DocumentCode
3447616
Title
Impedance Bridge Ratio Transformer Calibration by Reference-Step Conductance Build-Up
Author
Corney, A.C.
Author_Institution
Meas. Stand. Lab., New Zealand Ind. Res. Ltd., Lower Hutt
fYear
2004
fDate
38139
Firstpage
380
Lastpage
381
Abstract
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
Keywords
calibration; electric admittance measurement; estimation theory; measurement uncertainty; transformers; 40 to 20000 Hz; impedance bridge; ratio dial transformer; ratio transformer calibration; reference step conductance build up; uncertainties; Admittance; Bridge circuits; Calibration; Frequency conversion; Impedance; Measurement standards; Power transformer insulation; Resistors; Switches; Voltage;
fLanguage
English
Publisher
ieee
Conference_Titel
Precision Electromagnetic Measurements Digest, 2004 Conference on
Conference_Location
London
Print_ISBN
0-7803-8494-6
Electronic_ISBN
0-7803-8494-6
Type
conf
DOI
10.1109/CPEM.2004.305624
Filename
4097279
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