Claims
- 1. 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.
- 2. A direct current transformer as set forth in claim 1 further comprising bias means for applying a second magnetic field to said primary and secondary conductors, whereby together the applied magnetic fields produce a magnetic field which penetrates said primary and secondary conductors, and said magnetic fields do not exceed a value which would render said primary non-superconductive.
ORIGIN OF THE INVENTION
The invention described herein was made in the performance of work under a NASA contract and is subject to the provisions of Section 305 of the National Aeronautics and Space Act of 1958, Public Law 85-568 (72 stat. 435;42 USC 2457).
US Referenced Citations (5)
Foreign Referenced Citations (1)
Number |
Date |
Country |
6613761 |
Apr 1967 |
NLX |