| Title | Investigation of ac voltage measurement requirements for an oscillatory dynamic mode version of the watt balance |
| Publication Type | Conference Paper |
| Year of Publication | 2010 |
| Authors | Christian, L.A., Stewart T.J., and Sutton C.M. |
| Conference Name | CPEM Digest (Conference on Precision Electromagnetic Measurements) |
| Date Published | 2010 |
| Keywords | Ac voltage, Design issues, Dynamic modes, Electromagnetism, New forms, Oscillatory dynamics, Planck constants, Programmable Josephson voltage standard, Standard uncertainty, Voltage measurement, Watt balance |
| Abstract | Recently a new form of the watt balance apparatus for measuring the Planck constant has been proposed that employs an oscillatory rather than a constant coil velocity during the dynamic mode of the experiment. The resulting ac voltage of frequency around 1 Hz and amplitude around 1 V would need to be measured to a relative standard uncertainty of better than 1 × 10 -8. A quantum voltmeter employing a programmable Josephson voltage standard and a sampling voltmeter with preamplifier is proposed to achieve this. This paper discusses some of the design issues involved with such a measurement. © 2010 IEEE. |
| URL | http://www.scopus.com/inward/record.url?eid=2-s2.0-77956623238&partnerID=40&md5=0f1384403d80053b5a7cd1013efcb3d6 |
| DOI | 10.1109/CPEM.2010.5544781 |
