Panasonic Intellectual Property Management Co., Ltd.

The Doshisha

Junichi Kotani

Nobuya Matsutani

Toshiyuki Asahi

Osamu Moriya

Tomohiro Koganei

Hisayoshi Kato

Masaki Kato

Hidenori Uematsu

Ken Hirota

Hiroshi Tomita

Takayuki Hiruma

Kanako Sugimura

Shigeyuki Inagaki

Hironori Nagasaki

A magnetic component is configured to be used with a coil wound about a center axis along an axis direction. A first magnetic member is configured such that magnetic flux generated by the coil passes therethrough, extends in the axis direction to have first and second ends, and has a portion overlapping with the coil viewed perpendicular to the axis direction. A second magnetic member is disposed on an opposite side to the coil with respect to the first end of the first magnetic member, in the axis direction. A third magnetic member is disposed on an opposite side to the coil with respect to the second magnetic member, in the axis direction. The third magnetic member is larger in magnetic anisotropy than each of the first magnetic member and the second magnetic member, and has an easy direction of magnetization oriented perpendicular to the axis direction.

Magnetic component and electric device

A leakage transformer includes a core and a printed wiring board. The core includes a first magnetic leg and a second magnetic leg. The second magnetic leg is spaced from the first magnetic leg. The printed wiring board includes an insulating portion and conductor wiring. The conductor wiring includes a first coil and a second coil. The first coil is formed of a first winding and is wound around only the first magnetic leg, not around the second magnetic leg. The second coil is formed of a second winding and includes a first part and a second part. The first part is wound around only the first magnetic leg, not around the second magnetic leg. The second part is wound around both the first and second magnetic legs.

Leakage transformer

A reactor includes a core and first and second coils wound around the core about first and second center axes extended in a first direction, respectively. The core includes first and second core legs disposed inside the first and second coils, respectively. The first and second coils are arranged in a second direction perpendicular to the first direction. The first coil includes a first wound-wire part wound around the first core leg and two first terminal parts extended from both end portions of the first wound-wire part, respectively. The second coil includes a second wound-wire part wound around the second core leg and two second terminal parts extended from both end portions of the second wiring wire part, respectively. The second coil has the same shape and the same dimension as the first coil.

Reactor

A reactor includes a first and second winding, a coupling core portion, and a first and second core portion. The coupling core portion forms a coupling magnetic path, through which a magnetic flux generated by the first winding when the first winding is energized and a magnetic flux generated by the second winding when the second winding is energized pass, which magnetically couples the first winding and the second winding together. The first core portion forms a first magnetic path, through which the magnetic flux generated by the first winding when the first winding is energized passes and is aligned with a first plane. The second core portion forms a second magnetic path, through which the magnetic flux generated by the second winding when the second winding is energized passes and is aligned with a second plane. The coupling plane intersects at right angles with the first and second plane.

Reactor, core member, and power supply circuit

A reactor includes a plurality of windings, a coupling core, and an inductor core. A coupling core configured to form a coupling closed magnetic circuit that magnetically couples the plurality of windings, the plurality of windings being wound around the coupling core; and. An inductor core, which includes a main part, a first projection part projecting from one end of the main part, and a second projection part projecting from another end of the main part, and each of the first projection part and the second projection part is magnetically connected to the coupling core. The inductor core forms an inductor closed magnetic circuit together with a part of the coupling core around which one winding of the plurality of windings is wound.

Reactor and power supply circuit

Provided are a ferrite material, a composite magnetic body, a coil component, and a power supply device, having high magnetic permeability. Ferrite is ferromagnetic and is expressed by a chemical formula MnSiFeO, where 0&#x3c;x&#x3c;1, y&#x3e;0, z&#x3e;0, x+y+z=3, and &#x3b4;&#x2264;0.5.

Ferrite material, composite magnetic body, coil component, and power supply device

A production method for a magnetic material, which is expressed by a chemical structure formula Fe(AlMn)O, where 0&#x3c;x&#x3c;1, and exhibits ferromagnetism, includes: preparing a mixed aqueous solution by dissolving, in distilled water, Fe nitrate, Al nitrate, and an oxide including Mn, the Fe nitrate, the Al nitrate, and the oxide being parent materials; preparing a metal-citric acid complex by mixing citric acid and ethylene glycol with the mixed aqueous solution; obtaining a precursor by boiling the metal-citric acid complex to a gel and drying the gel; and obtaining the magnetic material by sintering the precursor.

Magnetic material and production method therefor

A reactor includes a coil body, an exterior case, and a filler. The coil body includes a core and a coil wound around the core. The exterior case includes a metal structure and a resin frame. The metal structure has a bottom surface and a side wall provided to stand upright from the bottom surface. The bottom surface and the side wall of the metal structure are unitarily formed with each other. The frame is disposed at an opposite side to the bottom surface of the metal structure. The exterior case houses the core and the coil. The filler is filled between the exterior case and the coil body.

A composite magnetic material includes first particles made of soft magnetic metal and second particles provided between first particles. Each of the second particles includes a first solid phase and a second solid phase. The composite magnetic material exhibits high magnetic characteristics.

Composite magnetic material, coil component using same, and composite magnetic material manufacturing method

A composite magnetic material includes a plurality of soft-magnetic metal powders, a first oxide that covers a surface of each of the plurality of soft-magnetic metal powders, and a second oxide that covers a surface of the first oxide and is interposed among the plurality of soft-magnetic metal powders each coated with the first oxide. The first oxide has a first recess in a surface, and the second oxide is provided in the first recess. With this configuration, peeling between the first oxide and the second oxide can be prevented, so that the composite magnetic material having high mechanical strength can be provided.

Composite magnetic material, coil component using same, and power supply device

The voice recognition device according to the present disclosure includes a communication interface that communicates with an external device, a first microphone that collects sound to produce audio data, and a controller that analyzes the audio data produced by the first microphone, determines contents of a designation corresponding to an analysis result, and then controls its own device based on a determination result, and yet controls its own device to urge a user to use the external device when the contents of the designation corresponding to the analysis result cannot be determined.

Growing community of inventors

Hyogo, Japan

Junichi Kotani