The Cryobridge, an Automatic AC Potentiometer for Resistance Thermometry at Low Power Dissipation

  • P. C. F. Wolfendale
Conference paper
Part of the Advances in Cryogenic Engineering book series (ACRE, volume 18)


The need for an automatic ac potentiometer arose from the necessity of using automatic double bridges for platinum resistance thermometry (PRT). With such an instrument, accuracies of resistance ratio measurement of four parts in 107 are possible provided the potential leads are of low resistance [1].


Thermal Noise Output Impedance Supply Frequency United Kingdom Introduction Leighton Buzzard 


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  1. 1.
    I. J. J. Hill and A. P. Miller, Proc. IEE (Great Britain), 110: 453 (1963).Google Scholar
  2. 2.
    C. A. Swenson, Iowa State University, Ames Iowa, private communication (1970).Google Scholar
  3. 3.
    R. D. Cutkosky, Trans. IEEE, 13: 243 (1964).Google Scholar
  4. 4.
    R. D. Cutkosky, J. Res. NBS, 74C: 15 (1970).Google Scholar
  5. 5.
    A. M. Thompson, Proc. IEE (Great Britain), 118: 1662 (1971).Google Scholar
  6. 6.
    C. H. Miller, Proc. IEE (Great Britain), 109: 299 (1962).Google Scholar
  7. 7.
    I. M. Templeton and B. K. C. MacDonald, Proc. Phys. Soc. (London), B66: 680 (1953).CrossRefGoogle Scholar
  8. 8.
    D. A. Bell, Electrical Noise, D. Van Nostrand, New York (1960), pp. 211–226.Google Scholar

Copyright information

© Springer Science+Business Media New York 1973

Authors and Affiliations

  • P. C. F. Wolfendale
    • 1
  1. 1.Automatic Systems Laboratories Ltd.Leighton Buzzard, BedsUK

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