Apparatus for deactivating magnetomechanical eas markers...

Details Apparatus for deactivating magnetomechanical eas markers... Apparatus for deactivating magnetomechanical eas markers...

G - Physics

08

B

G08B 13/24 (2006.01)

Patent

CA 2280843

A coil array for an EAS marker deactivation device is formed of three co-planar "pancake" coils (L1, L2, L3) energized by an a.c. drive signal (22) and arranged to provide significant alternating magnetic fields in each of two orthogonal, horizontal directions. The coil geometry and arrangement are selected to provide smooth field distribution to minimize the possibility of harm to video and audio tapes and other magnetic medium products,

Le groupe de bobines d'un appareil de desactivation des marquages d'un système électronique de surveillance d'articles est constitué de trois bobines en galettes coplanaires (L1, L2, L3) alimentées par un signal de commande c.a. (22) et disposées de manière à créer des champs magnétiques alternatifs importants dans deux directions orthogonales horizontales. La géométrie et la disposition des bobines sont choisies pour assurer une répartition régulière des champs de manière à réduire les risques de dommages aux bandes vidéo et audio et autres supports magnétiques.

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