PROTECTION OF ELECTRONIC DEVICES

A printed circuit board 20 includes a layer 34 of quantum tunnelling composite that lowers its resistance in response to high energy electromagnetic radiation, connecting circuit elements 22 - 28 together through vias 32 to prevent damage from released charge. When high energy electromagnetic radiat...

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Bibliographic Details
Main Author TURTON, BRIAN, CHARLES, HARGRAVE
Format Patent
LanguageEnglish
French
German
Published 15.02.2012
Subjects
CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS
ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
ELECTRICITY
MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
MEASUREMENT OF NUCLEAR OR X-RADIATION
MEASURING
PHYSICS
PRINTED CIRCUITS
TESTING
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Summary:A printed circuit board 20 includes a layer 34 of quantum tunnelling composite that lowers its resistance in response to high energy electromagnetic radiation, connecting circuit elements 22 - 28 together through vias 32 to prevent damage from released charge. When high energy electromagnetic radiation is not present, the quantum tunnelling composite has high resistance and allows the circuit to operate as usual. The quantum tunnelling composite acts, in the presence of radiation, to short-circuit elements on the PCB before capacitive discharge damages them. A loudspeaker (not shown) may be included to provide vibrations to the quantum tunnelling composite to return it to its insulating state after the radiation exposure has finished, avoiding the tendency for the composite to become latched in the conducting state. The printed circuit board may be used to protect against high energy gamma ray pulses produced by a nuclear explosion.
Bibliography:Application Number: EP20080806263