Low resistance electrical interface for current limiting...

H - Electricity – 01 – C

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H01C 7/02 (2006.01) H01C 1/14 (2006.01) H01C 17/28 (2006.01)

Patent

CA 2225212

A novel current limiting PTC polymer device comprising a conductive polymer composition with electrodes attached thereto characterized by having a low contact resistance and a method of producing the same. The invention provides for the selective treatment of portions of the surface of the conductive polymer composition by at least one of plasma/corona etching and plasma sputtering/plasma spray to create a site for attachment of the electrodes resulting in a low contact resistance. The electrical devices of the invention are particularly useful in circuit protection applications.

Dispositif de limitation de courant à polymère CTP à base d'une composition de polymère conducteur et pourvu d'électrodes, caractérisé par sa faible résistance de contact, et méthode pour sa fabrication. L'invention repose sur un traitement sélectif de portions de la surface de la composition polymère par gravure au plasma/effet couronne ou gravure par projection plasma pour créer un point d'attache des électrodes caractérisé par une faible résistance de contact. Le dispositif visé par la présente est d'une grande utilité dans les applications de protection des circuits.

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