Triggerable superconductive switching means, and apparatus compr

Details Triggerable superconductive switching means, and apparatus compr Triggerable superconductive switching means, and apparatus compr

1987-07-17

1988-06-28

Wong, Peter S.

Electric power conversion systems

Current conversion

Cryogenic

307245, 307306, 331107S, H02M 700, H03B 1500

Patent

active

047543841

ABSTRACT:
Disclosed is a novel switching device. In its currently preferred embodiment the device comprises a conductive path that comprises a superconductive section, with the remainder of the path being non-superconductive, means for applying a voltage across the path such that a current flows, and means for changing the current in the path from a first value to a second value, where one of the two values is below, and the other is above, a critical current associated with the superconductive section of the path. Depending on the choice of applied voltage and path parameters changing the current from the first to the second state results in switching of the current, either oscillating between two levels of current, or to a steady value. Exemplarily, the current is changed by changing the applied voltage or by changing the resistance of the non-superconductive portion of the conductive path. The device can be used as, for instance, a microwave oscillator or a (binary) photodetector.

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patent: 4370568 (1983-01-01), Lumley
patent: 4373138 (1983-02-01), Fulton et al.
patent: 4468635 (1984-08-01), Lukens et al.

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