摘要:
A magnetic lens for focusing a beam of charged particles traveling along an optical axis includes an axial bore disposed around said optical axis; magnetic field generating means; and magnetic yoke, to guide and concentrate said magnetic field toward said optical axis so as to form a focusing region, wherein Said yoke has a composite structure, comprising an outer primary portion and an inner secondary portion; Said secondary portion is mounted as a monolithic insert within said primary portion so as to be disposed around said focusing region; Said secondary portion comprises a waist region surrounding said bore and acting as a magnetic constriction, configured such that said magnetic field undergoes saturation in said waist region, thereby causing magnetic flux to exit the waist region and form a focusing field in said focusing region.
摘要:
A coil component that includes a drum-shaped core with an upper flange and a lower flange, a winding wound around the core, and an exterior resin between the upper flange and lower flange of the core. The exterior resin includes an inorganic filler at 91 to 95 mass % with respect to the exterior resin, and a resin that has more than one glass transition temperature and has a phase-separated structure. A flange spacing distance between the upper flange and the lower flange is 1.0 mm or less.
摘要:
A choke coil includes a core that is formed to have a ring shape and a winding member that is provided with an electrically conductive wire wound around the core. A housing member, interposed between the core and the winding member, is formed of a material having non-magnetic and non-conductive properties, has a ring shape corresponding to the core, and covers the core. The housing member is formed in such a manner that a separation distance along a radial direction between an outer surface of the housing member and an outer surface of the core becomes uniform over a circumferential direction.
摘要:
Either a reactor or a transformer includes two facing yoke cores, and a plurality of magnetic leg cores around which coils are wound and gap adjustment means are disposed. The two facing yoke cores are connected with the plurality of magnetic leg cores, and are provided with isotropic magnetic bodies on at least one of the connection parts. The isotropic magnetic bodies are formed from an isotropic magnetic material. A power conversion apparatus includes either the reactor or the transformer.
摘要:
This disclosure provides a magnetic material-containing resin to be used for coating and forming cores. A magnetite-containing resin of the present invention includes a magnetite having a residual magnetic flux density of less than 15 Am2/kg and a coercive force of less than 12 kA/m. A coil is provided that has a structure in which by coating a winding with the magnetite-containing resin, a magnetite-containing resin layer is formed.
摘要:
A device for controlling a magnetic flux in an electromagnetic system, wherein the system includes magnetically connected magnetic cores, between which a volume is arranged. The volume includes a controllable magnetic flux region and the magnetic flux region includes a magnetic material having a relative permeability that may be varied by influencing the temperature of the material. The magnetic material includes a magnetic material, the Curie point of which lies within the temperature operating range of the device and exhibits paramagnetic properties within the temperature range. Also a method of controlling a magnetic flux.
摘要:
An inexpensive shielded-type inductor is disclosed to include a first powder compact member, a coil embedded in the first powder compact member with the bottom side of the coil body thereof kept in flush with the bottom side of the first powder compact member and two metal terminals thereof extending from the two opposite ends of the coil body to the outside of the first powder compact member, and a second powder compact member bonded to the bottom side of the first powder compact member to determine the inductance value of the inductor subject to the thickness of the second powder compact member and to protect the inductor against external environmental factors.
摘要:
An electronic component having a coil includes a laminated body formed by laminating a plurality of magnetic body layers. The coil is formed by connecting coil electrodes in the laminated body. Nonmagnetic body layers are disposed on the laminated body to have a gap with the coil when seen in a plan view from a coil axis direction of the coil. The embodiment of an electronic component has a stair-like direct-current superposition characteristic.
摘要:
In a three phase transformer core, amorphous metal strips are wound into rings that are combined into frames and assembled to define cores with leg cross sections that have more than 4 sides to facilitate winding transformer windings onto the legs using winding tubes. The amorphous metal layers are secured relative to one another and the core made more rigid using resin, silicon steel layers included in the amorphous metal core, or by using strapping or tying devices.
摘要:
A device comprises a first magnetically conductive structure, a second magnetically conductive structure, and a circuit coupled the first and second magnetically conductive structures. The circuit senses information pertaining to a permeability of the first magnetically conductive structure relative to a permeability of the second magnetically conductive structure. The device may be used for various flux sensing and control applications, such as in current sensors.