The Direct Current Transformer

  • J. B. McFerran
Part of the Advances in Cryogenic Engineering book series (ACRE, volume 6)


Among numerous problems of cryogenic engineering there is the one of electrical conduction from an external room temperature source into a low temperature environment. For currents over a few amperes the problem is one of providing electrical conductors of suitable current carrying capacity without introducing excessive thermal conduction. In working at temperatures of liquid helium, the thermal losses quickly result in substantial boil-off, To conduct currents of several hundred amperes would appear totally impractical.


Critical Field Critical Magnetic Field Secondary Current Leakage Flux Secondary Circuit 
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Copyright information

© Springer Science+Business Media New York 1961

Authors and Affiliations

  • J. B. McFerran
    • 1
  1. 1.General Electric CompanySchenectadyUSA

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