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Machine translation
1. (WO1981001218) AN INDUCTANCE COIL HAVING A CORE OF MAGNETIC MATERIAL
Latest bibliographic data on file with the International Bureau   

Pub. No.:    WO/1981/001218    International Application No.:    PCT/SE1980/000256
Publication Date: 30.04.1981 International Filing Date: 23.10.1980
IPC:
H01F 27/25 (2006.01), H01F 3/14 (2006.01), H01F 41/02 (2006.01)
Applicants:
Inventors:
Priority Data:
7908898 26.10.1979 SE
Title (EN) AN INDUCTANCE COIL HAVING A CORE OF MAGNETIC MATERIAL
(FR) BOBINE D"INDUCTANCE A NOYAU DE MATERIAU MAGNETIQUE
Abstract: front page image
(EN)An inductance coil having a core in the form of a closed loop, particularly of circular cylindrical shape, said core comprising a plurality of mutually superimposed layers of a continuous strip (1, 1", 11) of magnetic material. To obtain air-gap properties with respect to the core said core is provided with perforations or slots (3, 3", 13) extending radially through the core, said perforations or slots in each layer being limited axially by at least one unbroken part (4, 4") Which holds the layer together. Preferably the unbroken parts (4, 4") in each layer have an area such that said parts become saturated at the operation conditions under which the inductance coil is intended to work, whereas said parts also obtain air-gap properties.
(FR)Bobine d"inductance a noyau en forme de boucles fermees, particulierement de forme cylindrique circulaire, ce noyau se composant d"une pluralite de couches mutuellement superposees d"une bande continue (1, 1", 11) d"un materiau magnetique. Pour obtenir les proprietes d"entrefer par rapport au noyau celui-ci possede des perforations ou des fentes (3, 3", 13) s"etendant radialement au travers du noyau, ces perforations ou fentes dans chaque couche etant limitees axialement par au moins une partie non interrompue (4, 4") qui tient les couches assemblees. De preference les parties non interrompues (4, 4") dans chaque couche possedent une surface telle que ces parties deviennent saturees dans les conditions de fonctionnement ou la bobine d"inductance est supposee travailler, conditions dans lesquelles lesdites parties ont aussi des proprietes d"entrefer.
Designated States:
Publication Language: English (EN)
Filing Language: English (EN)