Resonant circuit for electronic anti-theft element

Details Resonant circuit for electronic anti-theft element Resonant circuit for electronic anti-theft element

G - Physics

08

B

G08B 13/24 (2006.01)

Patent

CA 2262585

This invention concerns a resonant circuit (6) for the electronic element. The task of the invention is to propose a resonant circuit (6) which can be reliably deactivated. This task is achieved by using a resonant circuit (6) consisting of two spiral printed circuits (2, 3) and one dielectric layer (4), wherein both spiral printed circuits (2, 3) are wrapped in opposing directions and arranged on both sides of the dielectric layer (4) so that they at least partly overlap. At least one selected area (8) is provided in which a conductive path arises between the two spiral printed circuits (2, 3) whenever a sufficiently high energy is applied by means of an external alternating field.

L'invention concerne un circuit à résonance (6) pour l'élément électronique. L'invention a pour objet de créer un circuit à résonance (6) pouvant être désactivé de manière fiable. A cet effet, le circuit à résonance (6) comporte deux circuits imprimés en spirale (2, 3) et une couche diélectrique (4), ces deux circuits imprimés en spirale (2, 3) étant bobinés dans des sens opposés et disposés des deux côtés de la couche diélectrique (4) de sorte qu'ils se chevauchent au moins partiellement. Au moins une région choisie (8) est prévue, dans laquelle un chemin conducteur est créé entre les deux circuits imprimés en spirale (2, 3) dès qu'une énergie suffisamment élevée est appliquée au moyen d'un champ alternatif externe.

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