Title :
Construction of CCC resistance ratio bridge
Author :
Zhi Hu ; Jensen, D.H. ; Holtoug, J.U.
Author_Institution :
Inst. of Fundamental Metrol., Lyngby, Denmark
fDate :
June 27 1994-July 1 1994
Abstract :
The paper introduces the cryogenic current comparator (CCC) resistance ratio bridge being built at DFM, which is designed to relate the value of quantized Hall resistance R/sub H/(i) to room temperature resistance standards. The CCC is an overlapping tube type with copper wire. A double constant current source is used to supply for the CCC resistance ratio bridge.<>
Keywords :
bridge circuits; bridge instruments; comparators (circuits); constant current sources; electric resistance measurement; low-temperature techniques; measurement standards; quantum Hall effect; Cu; copper wire; cryogenic current comparator; double constant current source; overlapping tube type; quantized Hall resistance; resistance ratio bridge; room temperature resistance standards; Bridge circuits; Copper; Cryogenics; Electrical resistance measurement; Insulation life; Metrology; Power transformer insulation; Resistors; SQUIDs; Wire;
Conference_Titel :
Precision Electromagnetic Measurements, 1994. Digest., 1994 Conference on
Conference_Location :
Boulder, CO, USA
Print_ISBN :
0-7803-1984-2
DOI :
10.1109/CPEM.1994.333255
