Ultra-flat magnetic device for electronic circuits

H - Electricity – 01 – F

Patent

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Details

H01F 30/06 (2006.01) H01F 27/28 (2006.01)

Patent

CA 2210544

The low-profile magnetic device comprises at least one winding formed by a plurality of conductive metal laminations (9) of substantially annular layout, superposed and electrically insulated from each other and with respect to the ferromagnetic core and furnished with appendages (9X) for external connection. The laminations are accommodated in a well (7A) produced in an electrically insulating container (7) inserted into the said ferromagnetic core (1A, 1B) and a sheet of insulating material (11) is disposed between adjacent laminations. Each of the said laminations (9) is furnished, along at least one of its edges, with a plurality of protuberances (9A, 9B, 9C) disposed in such a way that on mutually superposing identical laminations rotated by 180° one with respect to another about a mid-line (M-M) lying in the plane of the lamination, the protuberances of one lamination (9) are angularly offset with respect to the protuberances of the adjacent laminations.

Le dispositif magnétique très mince comprend au moins un bobinage formé à partir de nombreuses tôles magnétiques conductrices (9), dont la disposition est, en grande partie, annulaire, qui sont superposées et électro-isolées les unes des autres et par rapport au noyau ferromagnétique. Ces tôles sont munies d'appendices (9X) en vue d'une connexion extérieure. Elles sont mises dans un puits (7A) produit dans un contenant électro-isolant (7) inséré dans le noyau ferromagnétique (1A, 1B), et une feuille de matériel isolant (11) est placée entre les tôles magnétiques adjacentes. Chacune des tôles (9) est pourvue, le long d'au moins un de ses côtés, de nombreuses protubérances (9A, 9B, 9C) disposées de façon à ce que, lorsque des tôles identiques sont superposées et pivotées à 180 degrés les unes des autres autour d'une ligne moyenne (M-M) se trouvant sur le plan de la tôle magnétique, les protubérances d'une tôle magnétique (9) sont placées à un angle par rapport aux protubérances des tôles magnétiques adjacentes.

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