Zobrazeno 1 - 10
of 34
pro vyhledávání: '"Karl-Erik Rydler"'
Autor:
Michal Grzenik, Torsten Lippert, Bruno Trinchera, Marian Kampik, Valter Tarasso, Karl-Erik Rydler
Publikováno v:
IEEE Transactions on Instrumentation and Measurement. 70:1-8
This article presents results of a comparison of a traveling ac voltage standard, which was a fused-silica planar multijunction thin-film thermal converter (PMJTC) developed at the National Institute of Standards and Technology (NIST). The ac–dc vo
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::85b9724571fe581b13082a2d42a443ea
https://doi.org/10.1109/tim.2020.3007296
https://doi.org/10.1109/tim.2020.3007296
Autor:
Tobias Bergsten, Karl-Erik Rydler
Publikováno v:
IEEE Transactions on Instrumentation and Measurement. 68:2041-2046
This paper presents a simplified method for realizing absolute phase and ac resistance for current shunts using only impedance ratio measurements. The method is based on three geometrically identical current shunts with different resistances, but wit
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::1ae8ccd17de85b53c5eb781ec3fd00db
https://doi.org/10.1109/tim.2018.2882927
https://doi.org/10.1109/tim.2018.2882927
Publikováno v:
2018 Conference on Precision Electromagnetic Measurements (CPEM 2018).
This paper describes a method for realisation of inductance and quality factor to high frequencies by determining the frequency response of gain-and phase-error of an inductance meter using two coils made of a single copper wire. As a starting point
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::7378411ac20658f914f718317f3cdda0
https://doi.org/10.1109/cpem.2018.8500813
https://doi.org/10.1109/cpem.2018.8500813
Publikováno v:
2018 Conference on Precision Electromagnetic Measurements (CPEM 2018).
The paper presents results of a trilateral comparison of a travelling AC voltage standard, which was a fused-silica NIST planar multijunction thin-film thermal converter. The AC-DC voltage transfer difference of the standard was measured at 2 V and s
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::ad8a33dc59520e3dc301a16b5f2b961f
https://doi.org/10.1109/cpem.2018.8501130
https://doi.org/10.1109/cpem.2018.8501130
Publikováno v:
IEEE Transactions on Instrumentation and Measurement. 64:1559-1563
We present the design and electrical characteristics of an active low-pass filter. It will be used in a reference waveform source based on a programmable Josephson voltage standard with multilevel delta–sigma modulation to generate accurate and spe
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::94c73b96a45cde0b58b2d78e7b55418f
https://doi.org/10.1109/tim.2015.2418454
https://doi.org/10.1109/tim.2015.2418454
Autor:
Karl-Erik Rydler, Jiri Streit, Ove Gunnarsson, Laurie Christian, M.D. Early, Bengt-Olof Andersson, Martin Šíra
Publikováno v:
IEEE Transactions on Instrumentation and Measurement. 62:1600-1607
We report on the performance of a simple method, known as the reference step method, to build up the dc voltage scale of a source. The key advantages of this method are that it relies on equipment that is readily available in most high-level laborato
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::fd28f4fc90407a56fc3f2d9b56943e2b
https://doi.org/10.1109/tim.2012.2230734
https://doi.org/10.1109/tim.2012.2230734
Publikováno v:
2016 Conference on Precision Electromagnetic Measurements (CPEM 2016).
We describe a low frequency Josephson impedance bridge and the measurement methods. The bridge is useable below 400 Hz and is based on two programmable Josephson voltage standards. Measurements of 1:1, 1:2 and 1:10 capacitance ratio have been perform
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::e15048b2496d8878e280e33de524d896
https://doi.org/10.1109/cpem.2016.7540509
https://doi.org/10.1109/cpem.2016.7540509
Publikováno v:
2016 Conference on Precision Electromagnetic Measurements (CPEM 2016).
The Digital Sampling Wattmeter of SP has been upgraded. New resistive shunts and dividers are built, with lower temperature coefficient and less power dependence. The aperture time of the samplers are increased. The calibration methods are also upgra
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::dd1f22c044ee0db616915924523a4466
https://doi.org/10.1109/cpem.2016.7540707
https://doi.org/10.1109/cpem.2016.7540707
Publikováno v:
IEEE Transactions on Instrumentation and Measurement. 60:2341-2346
We present a new source for currents in the picoampere range based on the charging of a capacitor at a constant rate. The voltage ramp is generated using Delta-Sigma modulation and low-pass filtering. This method ensures the linearity of the voltage
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::454d8c808d040acf7a5b847686b9f6c7
https://doi.org/10.1109/tim.2011.2117250
https://doi.org/10.1109/tim.2011.2117250
Publikováno v:
IEEE Transactions on Instrumentation and Measurement. 60:2399-2403
This paper describes high-accuracy low-frequency ac voltage measurements using a programmable Josephson voltage standard based on a binary Josephson array. AC voltage synthesis is performed by switching between quantized Josephson voltages. The accur
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::40808a14692f67b1d6adad7ab5e48c94
https://doi.org/10.1109/tim.2010.2101190
https://doi.org/10.1109/tim.2010.2101190