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|Author(s):||Samuel P. Benz; Charles J. Burroughs; Paul D. Dresselhaus; Thomas E. Lipe; Joseph R. Kinard Jr.;|
|Title:||100 mV ac-dc Transfer Standard measurements with a Pulse-driven AC Josephson Voltage Standard|
|Published:||July 14, 2006|
|Abstract:||In order to improve the low-voltage calibration service at NIST we have constructed an ac Josephson voltage standard system with a maximum rms output voltage of 100 mV. Using this system we synthesized sinewaves of various audio frequencies and measured ac-dc differences on the 220 mV range of a commercial thermal transfer standard. By modifying the output resistance of the low-pass-filtered transmission-line we were able to extend our measurements frequency from a few kilohertz up to 100 kHz. Our data stand within the uncertainty budget of ac-dc difference calibrations made of this transfer standard using conventional techniques. At the conference we will present additional results using new Josephson circuits capable of reaching 200 mV.|
|Conference:||Conference on Precision Electromagnetic Measurements|
|Proceedings:||Conference on Precision Electromagnetic Measurements Digest|
|Pages:||pp. 678 - 679|
|Dates:||July 9-14, 2006|
|Keywords:||Digital-analog conversion,Josephson arrays,Quantization,Signal synthesis,Standards,Superconductor-normal-superconductor devices,Voltage standards|
|Research Areas:||Quantum Electrical Measurements|
|PDF version:||Click here to retrieve PDF version of paper (460KB)|