Primary measurement method for the characterisation of impedance standard in the mΩ range

Autor: Benyamin H Rusanto, Steffen Seitz, Torsten Funck, Marco Heinrich

Publikováno v: Measurement Science and Technology. 33:085016

Impedance standards having impedance values in the low mΩ range, with non-zero reactances, and operable with alternating current-currents of a few Amps and up to a few kHz are needed for appropriate impedance meter calibration. These challenging ope

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::77be36035ea9ad1ac610039a848ff181
https://doi.org/10.1088/1361-6501/ac6a45

A new AC–DC transfer device for high voltages and high frequencies using electrooptic modulation

Autor: A. Müller, Torsten Funck, Thomas Spiegel

Publikováno v: 2020 Conference on Precision Electromagnetic Measurements (CPEM).

AC–DC transfer is performed almost exclusively using thermal converters. At voltages above a few volts, series resistors are used to extend the permissible voltage, which leads to significant power being drained from the source. By contrast, sensin

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::e51abc4e3c38e496533af6b3137a64e1
https://doi.org/10.1109/cpem49742.2020.9191688

AC–DC Disk Resistors Made of Surface Mount Components

Autor: Thomas Spiegel, Torsten Funck

Publikováno v: IEEE Transactions on Instrumentation and Measurement. 66:1454-1458

Disk resistors are widely used in micropotentiometers up to frequencies in the radio frequency range. They offer very small AC–DC differences but the permissible power dissipation is quite small. Also, the resistance value is poorly defined due to

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::dae1ea6e8e8b062195767bdf6568d86f
https://doi.org/10.1109/tim.2016.2634658

Bilateral international inductance comparison using traveling standards in thermoregulated enclosures

Autor: Torsten Funck, A. Satrapinski, Esa-Pekka Suomalainen, Axel Kolling, Harald Bothe

Publikováno v: Funck, T, Bothe, H, Kölling, A, Satrapinski, A & Suomalainen, E-P 2017, ' Bilateral international inductance comparison using traveling standards in thermoregulated enclosures ', IEEE Transactions on Instrumentation and Measurement, vol. 66, no. 6, 7801843, pp. 1511-1515 . https://doi.org/10.1109/TIM.2016.2634720
Funck, T, Bothe, H, Kolling, A, Satrapinski, A & Suomalainen, E-P 2016, Bilateral international inductance comparison using traveling standards in thermoregulated enclosures . in 2016 Conference on Precision Electromagnetic Measurements (CPEM 2016) ., 7540510, IEEE Institute of Electrical and Electronic Engineers, Conference on Precision Electromagnetic Measurements, CPEM 2016, Ottawa, Canada, 10/07/16 . https://doi.org/10.1109/CPEM.2016.7540510

Standards with toroidal windings are traditionally used for international comparisons of inductance. The achieved uncertainties of the comparisons are dominated by the rather high temperature coefficient of the traveling standards. Hence, thermoregul

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https://doi.org/10.1109/CPEM.2016.7540510

AC-DC current transfer standards suitable for use below 1 mA and up to 1 MHz

Autor: Torsten Funck, Thomas Spiegel

Publikováno v: 2016 Conference on Precision Electromagnetic Measurements (CPEM 2016).

Traceability for AC currents below 1 mA is needed to calibrate calibrators and multimeters at frequencies up to at least 100 kHz. Since the sensitivity of thermal convertors is not sufficient, only transfer standards using amplifiers are suitable. A

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::bf45738f21ce0baf6ac8dc43d057b331
https://doi.org/10.1109/cpem.2016.7540759