Title :
Self-balancing resistance ratio bridge using a cryogenic current comparator
Author :
Kinoshita, Joji ; Inagaki, Katsuy A. ; Yamanouchi, Chikako ; Yoshihiro, Kazuo ; Kawaji, Shinji ; Nagashima, Naoki ; Kikuchi, Nobuyasu ; Wakabayashi, Jun-Ichi
Author_Institution :
Electrotech. Lab., Ibaraki, Japan
fDate :
4/1/1989 12:00:00 AM
Abstract :
A cryogenic current comparator resistance bridge, developed to measure the resistance ratios of 1, 10, 100, and 6453.2 Ω against 1 Ω, is described. It is shown that the precision of the 1-Ω comparison is better than 0.01 p.p.m. This is attained by using an improved feedback system in the secondary current source
Keywords :
bridge circuits; comparators (circuits); electric resistance measurement; low-temperature techniques; 1 ohm; 10 ohm; 100 ohm; 6453.2 ohm; cryogenic current comparator; feedback; resistance bridge; resistance ratios; self balancing bridge; Bridge circuits; Cryogenics; Current measurement; Electrical resistance measurement; Feedback; Laboratories; NIST; Personal communication networks; Q measurement; Resistors;
Journal_Title :
Instrumentation and Measurement, IEEE Transactions on
