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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

  • Czech description

Classification

  • Type

    J<sub>ost</sub> - Miscellaneous article in a specialist periodical

  • CEP classification

  • 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

  • UT code for WoS article

  • EID of the result in the Scopus database