Název: | Measurement of low AC currents by the standard current probe equipped with lock-in amplifier |
Autoři: | Švarný, Jiří |
Citace zdrojového dokumentu: | ŠVARNÝ, J. Measurement of low AC currents by the standard current probe equipped with lock-in amplifier. In Proceedings of the 2022 International Conference on Diagnostics in Electrical Engineering (Diagnostika) : CDEE 2022. Pilsen: University of West Bohemia in Pilsen, 2022. s. nestránkováno. ISBN: 978-1-66548-082-6 |
Datum vydání: | 2022 |
Nakladatel: | University of West Bohemia in Pilsen |
Typ dokumentu: | konferenční příspěvek ConferenceObject |
URI: | 2-s2.0-85141363698 http://hdl.handle.net/11025/50537 |
ISBN: | 978-1-66548-082-6 |
Klíčová slova v dalším jazyce: | current probe;lock-in amplifier;dynamic range;current measurement;noise suppression |
Abstrakt v dalším jazyce: | Most of standard current probes are intended for the measurement of medium or higher currents. Usually, due to limited dynamic range, characteristic sensitivity and inner noise of the probe, it is hardly possible to measure currents lower than 100 mA. The paper deals with the possibility to extend the dynamic range of the current probe by an additional external lock-in amplifier. The paper describes the principle of the lock-in amplifier in general and design of the laboratory fixture of lock-in amplifier based on AD630 circuit as well. The designed amplifier was used to condition the output of the Agilentll46A current probe. The experiment is described in detail. The results show that thanks to the lockin amplifier the currents even lower than 1 mA can be easily detected. |
Práva: | © IEEE |
Vyskytuje se v kolekcích: | OBD |
Soubory připojené k záznamu:
Soubor | Velikost | Formát | |
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Svarny_Measurement.pdf | 613,94 kB | Adobe PDF | Zobrazit/otevřít |
Použijte tento identifikátor k citaci nebo jako odkaz na tento záznam:
http://hdl.handle.net/11025/50537
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