Maintaining a Local Reference Scale for Electrical Impedance by Means of a Digital Impedance Bridge
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00177016%3A_____%2F21%3AN0000024" target="_blank" >RIV/00177016:_____/21:N0000024 - isvavai.cz</a>
Result on the web
<a href="https://ncsli.org/store/viewproduct.aspx?id=19681629" target="_blank" >https://ncsli.org/store/viewproduct.aspx?id=19681629</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.51843/measure.13.4.7" target="_blank" >10.51843/measure.13.4.7</a>
Alternative languages
Result language
angličtina
Original language name
Maintaining a Local Reference Scale for Electrical Impedance by Means of a Digital Impedance Bridge
Original language description
Electrical impedance is one of the most commonly measured electrical quantities and there is a wi...de variety of impedance meters commercially available. Electrical calibration laboratories usually use sets of artifact impedance standards to calibrate these meters. The traceability chain for electrical impedance is described with a particular emphasis on the use of impedance bridges to calibrate the impedance standards themselves. Up to now, coaxial transformer ratio bridges have been used for this purpose, but these have a number of practical disadvantages. It is shown that digital impedance bridges, which use digital techniques to provide the accurate voltage ratios for bridge balancing, offer a viable alternative to transformer ratio bridges. The principles of operation of source-based and sampling-based impedance bridges are described. The joint research project VersICaL: A versatile electrical impedance calibration laboratory based on digital impedance bridges (2018-2021) has shown that digital impedance bridges provide, even for a laboratory with limited resources and expertise, a practical means of calibrating impedance standards at the parts per million level of accuracy. A source-based digital impedance bridge, designed and constructed within the project, is described and some measurement results presented.
Czech name
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Czech description
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Classification
Type
J<sub>ost</sub> - Miscellaneous article in a specialist periodical
CEP classification
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OECD FORD branch
20201 - Electrical and electronic engineering
Result continuities
Project
<a href="/en/project/8B18014" target="_blank" >8B18014: A versatile electrical impedance calibration laboratory based on digital impedance bridges</a><br>
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)
Others
Publication year
2021
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Name of the periodical
NCSLI Measure: The Journal of Measurement Science
ISSN
1931-5775
e-ISSN
2381-0580
Volume of the periodical
13
Issue of the periodical within the volume
4
Country of publishing house
US - UNITED STATES
Number of pages
17
Pages from-to
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UT code for WoS article
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EID of the result in the Scopus database
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