Electric current chopper
AssigneeAgence Nationale de Valorisation de la Recherche (ANVAR)
InventorsJacques Chaussy, Jean-Louis Bret, Adrien Berton, Jacques Odin
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Abstract
Apparatus for electrically chopping a direct current signal by controlling the superconductivity state of resistance elements contained within a cryostat. The resistance elements are in a bridge arrangement and the control is provided by laser diodes also contained within the cryostat.
Claims10
An electric current chopper for use with a cryostat, comprising resistance means having at least one superconductivity resistance component adapted to be maintained in the cryostat slightly below its superconductivity threshold and a controlled electroluminescent diode placed inside the cryostat for periodically emitting a light beam for heating the resistance component above its threshold.
Dependencies are inferred from the claim text.