Syogo Kiryu

  • Citations Per Year
Learn More
The National Metrology Institute of Japan has developed a resistive voltage divider (RVD), which is constructed from a series array of quantized Hall resistance (QHR) bars named “QHR voltage divider (QHR-VD).” In principle, the QHR-VD doesn't need time-consuming bootstrap self-calibration and isn't affected by measurement conditions such as(More)
At the National Metrology Institute of Japan, we are currently developing a transformer bridge circuit that can precisely compare the “i = 2” plateau resistance of an ac quantized Hall resistance with a 100-kO resistance. In this report, we propose a practical transformer voltage ratio of 7.75:1, which is the most important parameter for(More)
At the National Metrology Institute of Japan, we are developing a transformer bridge circuit that can precisely compare the i = 2 plateau resistance in an ac quantized Hall resistance with a 100-kQ resistance. In this paper, we propose a practical transformer voltage ratio of 7.75:1, which is the most important parameter for developing a transformer bridge(More)
The National Metrology Institute of Japan has developed a resistive voltage divider (RVD), which is constructed from a series array of quantized Hall resistance (QHR) bars named “QHR voltage divider” fabricated on one chip. In principle, the QHR voltage divider does not need time-consuming bootstrap self-calibration and is not affected by(More)
A cryogenic current comparator (CCC) is an instrument of great importance in electrical metrology, which provides a ratio of two currents with ultimate accuracy based on superconductivity. It is used for dc resistance calibration in many national metrology institutes. Conventional CCCs consist of multi-turn coils of wire windings, a multi-layered shield of(More)
  • 1