EP 0500367 A2 19920826 - Coil arrangement and static measuring device.
Title (en)
Coil arrangement and static measuring device.
Title (de)
Spulenanordnung und statische Messvorrichtung.
Title (fr)
Agencement de bobines et dispositif de mesure statique.
Publication
Application
Priority
ZA 911248 A 19910220
Abstract (en)
The invention relates to an inductive coil arrangement (18) for measuring the physical characteristics of a token (26). The coil arrangement (18) comprises a plurality of inductors (12,14,16), each inductor being formed out of at least two superposed planar spiral tracks (28,46,52,58,61,61A,62,70) separated by an insulating layer (72A,74A,76A,78A,80A,82A,84A,86A) of a multi-layer electrical device (72,74,76,78,80,82,84,86), such as a plurality of printed circuit boards which are laminated together. Conductive paths (92) extend axially between the tracks. The invention extends to a method of manufacturing the inductive coil arrangement, as well as a to token validation device (10) incorporating the inductive coil arrangement. <IMAGE>
IPC 1-7
IPC 8 full level
G07D 5/08 (2006.01); H01F 27/28 (2006.01)
CPC (source: EP)
G07D 5/08 (2013.01); H01F 27/2804 (2013.01); H01F 2027/2809 (2013.01)
Designated contracting state (EPC)
AT BE CH DK ES FR GB LI
DOCDB simple family (publication)
DOCDB simple family (application)
EP 92301401 A 19920220