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Electrical Switch Contact Resistance at 4.2°K

  • J. L. Zar
Conference paper
Part of the Advances in Cryogenic Engineering book series (ACRE, volume 13)

Abstract

In the use or the testing of superconducting coils, the experimenter often provides a switch of extremely low resistance to short-circuit the coil and operate it in a persistent mode. In small coils, this type of switch is constructed of a superconductor which can be switched between the superconducting and normal resistance state, For large coils, such a switch, using a superconductor in its normal resistance state, results in a large amount of energy loss during the charging of the. coil. This can be shown in a rather general way.

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References

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    A. R. Kantrowitz and Z. J. J. Stekly, Appl. Phys. Lett., 6:56 (1965)CrossRefGoogle Scholar
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    F. Llewellyn-Jones, The Physics of Electrical Contacts, The Clarendon Press, Oxford (1957).Google Scholar
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    F. Seitz, The Modern Theory of Solids, McGraw-Hill Book Co., New York (1940).Google Scholar
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    J. J. Stekly, A. M. Hatch, J. L. Zar, W. N. Latham, C. Borchert, A. El Bindari, R. E. Bernert, and T. A. de Winter, in: Liquid Helium Technology, Bull. Intern. Inst. Refrigeration, Annexe 1966–5, p. 491.Google Scholar

Copyright information

© Springer Science+Business Media New York 1995

Authors and Affiliations

  • J. L. Zar
    • 1
  1. 1.Avco Everett Research LaboratoryEverettUSA

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