DocumentCode :
1490566
Title :
Evaluation of Low-Frequency Characteristic of a Thermal Converter Using Programmable Josephson Voltage Standard
Author :
Sasaki, Hitoshi ; Yamamori, Hirotake ; Yamada, Takahiro ; Fujiki, Hiroyuki ; Shoji, Akira ; Budovsky, Ilya ; Shimizume, Koji
Author_Institution :
Nat. Inst. of Adv. Ind. Sci. & Technol., Tsukuba, Japan
Volume :
59
Issue :
11
fYear :
2010
Firstpage :
2930
Lastpage :
2935
Abstract :
We are developing a programmable Josephson voltage standard (PJVS) system based on a compact cryocooler. The system is capable of generating two arbitrary waveforms by use of a dual-output PJVS (DO-PJVS) device. Owing to this dual-output feature of the PJVS system, the low-frequency characteristic in the ac-dc transfer difference of a thermal converter has been investigated using the 90° addition method. The evaluation of the low-frequency characteristic of a thermal converter is of great importance for connecting conventional ac-dc transfer standards and new Josephson-based ac voltage standards. To fulfill this purpose, a dual-heater thermal voltage converter (DH-TVC) with improved low-frequency performance has been developed. The low-frequency ac-dc transfer difference of the DH-TVC was evaluated to be smaller than 1 μV/V at frequencies of as low as 1 Hz.
Keywords :
measurement standards; voltage measurement; ac-dc transfer difference; compact cryocooler; dual-heater thermal voltage converter; low-frequency characteristic; programmable Josephson voltage standard; Analog-digital conversion; Australia; Electrical equipment industry; Frequency conversion; Isolation technology; Joining processes; Metrology; Resistance heating; Standards development; Voltage; Ac-dc transfer; Josephson array; thermal converter; voltage standard;
fLanguage :
English
Journal_Title :
Instrumentation and Measurement, IEEE Transactions on
Publisher :
ieee
ISSN :
0018-9456
Type :
jour
DOI :
10.1109/TIM.2010.2047126
Filename :
5464362
Link To Document :
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