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US 4,135,127 AGranted
Direct current transformer
OwnerJames C. Administrator of the National Aeronautics and Space Administration, with respect to an invention of Fletcher, Shyam M. Khanna +1inventors
InventorsJames C. Administrator of the National Aeronautics and Space Administration, with respect to an invention of Fletcher, Shyam M. Khanna, Eugene W. Urban
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Abstract
A direct current transformer in which the primary consists of an elongated strip of superconductive material, across the ends of which is applied a direct current potential. Parallel and closely spaced to the primary is positioned a transformer secondary consisting of a thin strip of magnetoresistive material.
Claims2
A direct current transformer comprising:
- a primary electrical conductor having a pair of opposite ends comprising transformer input terminals;
- a source of D.C. signal, I.sub.P, connected across said terminals, whereby a direct magnetic field is provided;
- the material of said primary electrical conductor and level of said D.C. signal I.sub.P being such that said primary electrical conductor is superconductive in the presence of said signal I.sub.P, and that said signal I.sub.P rises at least to the critical level for said superconductive material, whereby moving vortices are created in said primary electrical conductor;
- a secondary electrical conductor of a magneto-resistive material, said secondary conductor being positioned closely adjacent to, but electrically insulated from, said first conductor, and having a pair of unbiased end terminals;
- and
- environmental means for applying a low temperature to said primary and secondary electrical conductors, said temperature being no higher than the superconducting transition of said primary electrical conductor;
- whereby D.C. potential V.sub.S appears across said terminals of said secondary conductor responsive to the application of said signal I.sub.P across said terminals of said primary electrical conductor.
4 more elements
Dependencies are inferred from the claim text.