Title :
Current dependence measurement of resistance using a cryogenic constant current source with linear output
Author :
Nakanishi, M. ; Kinoshita, J. ; Murayama, Y. ; Endo, T.
Author_Institution :
Electrotech. Lab., Ibaraki, Japan
Abstract :
We developed a cryogenic constant current source with linear output by using a cryogenic current comparator. When changing the current supplied to a resistor, nonlinear change of its voltage drop corresponds to current dependence of its resistance. We used a Josephson potentiometer with high linearity to measure the voltage drop.
Keywords :
Josephson effect; calibration; constant current sources; electric potential; electric resistance measurement; low-temperature techniques; potentiometers; voltage measurement; Josephson potentiometer; cryogenic constant current source; cryogenic current comparator; current dependence; current dependence measurement; linear output; linearity; nonlinear change; voltage drop; Circuits; Cryogenics; Current measurement; Electrical resistance measurement; Laboratories; Linearity; Potentiometers; Resistors; SQUIDs; Voltage;
Conference_Titel :
Precision Electromagnetic Measurements Digest, 2000 Conference on
Conference_Location :
Sydney, NSW, Australia
Print_ISBN :
0-7803-5744-2
DOI :
10.1109/CPEM.2000.850997
