Cryogenic current comparator designed for current dependence measurement of 1 /spl Omega/ resistor up to 1 A and for superconducting current measurement

Author

Nakanishi, M. ; Kinoshita, J.

Author_Institution

NMIJ, Nat. Inst. of Adv. Ind. Sci. & Technol., Ibaraki, Japan

fYear

2002

fDate

16-21 June 2002

Firstpage

334

Lastpage

335

Abstract

We developed a cryogenic current comparator, to which currents of up to 1 A can be supplied. It was designed to be used for a resistance ratio bridge to measure current dependence of a 1 /spl Omega/ resistor from 50 mA to 1 A by comparing it to a 100 /spl Omega/ resistor with small power coefficiency. It was also designed to be inserted in a superconducting coil to measure superconducting current.

Keywords

SQUIDs; bridge circuits; current comparators; electric current measurement; resistors; superconducting coils; 1 ohm; 100 ohm; 50 mA to 1 A; SQUID; cryogenic current comparators; precision current measurement; resistance ratio bridge; resistor current dependence measurement; resistor power coefficiency; superconducting coil inserted comparator; superconducting current measurement; Bridge circuits; Cryogenics; Current measurement; Electrical resistance measurement; Equations; Resistors; SQUIDs; Superconducting coils; Virtual manufacturing; Voltage measurement;

fLanguage

English

Publisher

ieee

Conference_Titel

Precision Electromagnetic Measurements, 2002. Conference Digest 2002 Conference on

Conference_Location

Ottawa, Ontario, Canada

Print_ISBN

0-7803-7242-5

Type

conf

DOI

10.1109/CPEM.2002.1034858

Filename

1034858