The Cryo Current Comparator as a Calculable DC Ratio Standard

IEEE Transactions on Instrumentation and Measurement

Volumn 28, Issue 3, 1979, Pages 205-211

  Groamann, Klaus ^a   Hahlbohm, H D ^a   Hechtfischer, Dieter ^a  

^a PHYSIKALISCH TECHNISCHE BUNDESANSTALT   (Germany)

Author keywords

[No Author keywords available]

Indexed keywords

CRYOGENICS; MATHEMATICAL TECHNIQUES - ERROR ANALYSIS; STANDARDS;

ELECTRIC MEASUREMENTS;

EID: 0018518429     PISSN: 00189456     EISSN: 15579662     Source Type: Journal    
DOI: 10.1109/TIM.1979.4314806     Document Type: Article

References (13)

1. I. K. Harvey, “A precise low temperature dc ratio transformer,” Rev. Sci. Instrum., vol. 43, pp. 1626–1629, 1972.
2. K. Grohmann, H.-D. Hahlbohm, H. Lubbig, and H. Ramin, “Strom-komparator mit supraleitendem Schirm,” PTB Jahresbericht, p. 204, 1972.
3. “Construction principles and properties of ironless dc and ac current comparators with superconducting shields,” PTB-Mitt., vol. 83, pp. 313–318, 1973.
4. “Ironless cryogenic current comparators for ac and dc applications,” IEEE Trans. Instrum. Meas., vol. IM-23, pp. 261-263, 1974.
5. R. F. Dziuba and D. B. Sullivan, “Cryogenic direct current comparators and their application,” IEEE Trans. Magn., vol. MAG-11, pp. 716 719, 1975.
6. I. K. Harvey, “Cryogenic ac Josephson effect EMF standard using a superconducting current comparator,” Metrologia, vol. 12, pp. 47 54, 1976.
7. S. N. Erne and H. Luther, “High precision dc current source,” IEEE Trans. Instrum. Meas., vol. IM-24, p. 345, 1975.
8. N. L. Kusters, “The precise measurement of current ratios,” IEEE Trans. Instrum. Meas., vol. IM-13, p. 197, 1964.
9. N. L. Kusters and M. MacMartin, “A direct current comparator bridge for high resistance measurements,” IEEE Trans. Instrum. Meas., vol. IM-22, p. 332, 1973.
10. H. D. Hahlbohm und H. Luther, “Nullpunktempfindlichkeit von Prazisions-Gleichstromkomparatoren,” PTB-Mitt. vol. 79, p. 156, 1969.
11. K. Grohmann, H.-D. Hahlbohm, D. Hechtfischer, and H. Lübbig, “Field attenuation as the underlying principle of cryo current comparators, Part I,” Cryogenics, vol. 16, pp. 423-429, 1976; Part II, pp. 601-605, 1976.
12. See, e.g., E. Durant, Electrostatique et Magnetostatique. France: Masson et Cie., Paris, 1953. p. 355.
13. K. Forger, “Ein Meßprinzip hoher Genauigkeit für Untersuchungen an Stromwandlern,” dissertation, Technische Hochschule, Braunschweig, 1953.