Topic
Magnetic core
About: Magnetic core is a research topic. Over the lifetime, 30011 publications have been published within this topic receiving 155247 citations.
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TL;DR: In this article, a new type of integrated magnetic recording head has been developed, which is made completely from thin films by vacuum deposition through a mask and can be used for writing and reading.
Abstract: A new type of integrated magnetic recording head has been developed. The head is made completely from thin films by vacuum deposition through a mask. This technology enables us to make many heads in one vacuum cycle. A special study has been carried out on the geometrical forms and on the anisotropic magnetic material. The demagnetizing fields require that we make magnetostatic coupling layers for each magnetic leg of the head. Also, the results indicate that the heads can be used for writing and reading.
71 citations
Patent•
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21 Aug 2000
TL;DR: In this paper, the antenna coil 14 has a magnetic core member 14a which is formed of a magnetic material in a flat plate shape and a coil main body 14b which is wound spirally around the magnetic core members 14a on an axis extending in the plane of the magnet core member.
Abstract: PROBLEM TO BE SOLVED: To prevent an antenna coil from coming into contact with a things around it during the conveyance of an article by forming the antenna coil extremely thin. SOLUTION: An IC chip 13 fitted to the article 11 with different information unique to the article 11 stored in it and the antenna coil 14 fitted to the article 11 is electrically connected to the IC chip 13. The antenna coil 14 has a magnetic core member 14a which is formed of a magnetic material in a flat plate shape and a coil main body 14b which is wound spirally around the magnetic core member 14a on an axis extending in the plane of the magnetic core member 14a. The magnetic core member 14a is formed of a composite material of magnetic powder and plastic or a laminated material of amorphous foil and the IC chip 13 is adhered to the top surface of the magnetic core member 14a.
71 citations
TL;DR: In this paper, the Gruneisen parameter, γ, and the thermal conductivity, κc, of the core were examined at outer core conditions, using primarily experimental data and one theoretical evaluation of γ.
71 citations
Patent•
24 Apr 2000
TL;DR: In this paper, a method, apparatus, and article of manufacture for a multi-layer transformer (132) includes a plurality of layers (168-174) having a magnetic core area (114) disposed on each of the layers forming a magnet core of the transformer, having a primary winding (126, 128) disposed at least one of layers, and a secondary winding (178, 180).
Abstract: A method, apparatus, and article of manufacture for a multi-layer transformer (132) includes a plurality of layers (168-174) having a magnetic core area (114) disposed on each of the layers forming a magnetic core of the transformer having a primary winding (126, 128) disposed on at least one of the layers, and a secondary winding (178, 180) disposed on at least one of the layers A plurality of interconnecting vias (130) connect the primary winding between the layers, and a second plurality of interconnecting vias (130) connect the secondary winding between the layers The interconnecting vias are disposed proximate a center of the magnetic core of the transformer, thus, reducing the overall volume, size, weight, and cost of a transformer while meeting regulatory isolation safety requirements
70 citations
18 Jun 2000
TL;DR: In this paper, the two-dimensional calculation of the winding losses occurring in magnetic devices like chokes and transformers used in switch mode power supplies is presented, based on the field distribution in the winding area including the fringing fields of arbitrarily positioned air gaps.
Abstract: In this report, the two-dimensional calculation of the winding losses occurring in magnetic devices like chokes and transformers used in switch mode power supplies is presented. Based on the field distribution in the winding area including the fringing fields of the arbitrarily positioned air gaps, the skin and proximity losses in each turn are analytically calculated.
70 citations