A gatedriver circuit for controlling a power electronic switch. The circuit provides a galvanic separation and is magnetically immune. The gatedriver circuit comprises a transformer arranged with two separate cores of magnetically conductive material each forming a closed loop. A first electrical conductor has windings around a part of both cores, and a second electrical conductor also has windings around part of both cores. The two cores are positioned close to each other to allow mutual magnetic interaction. The windings of the first and second electrical conductors around the first core have the same winding direction, and the windings of the first and second electrical conductors around the second core have opposite winding direction of the windings of the first and second electrical conductors around the first core, so as to counteract electric influence induced by a common magnetic field through the closed loops of the first and second cores. Hereby, such gatedriver circuit is suitable for controlling power switches in environments with strong magnetic fields, e.g. inside a high power wind turbine.

There are provided a coil component and a method of manufacturing the same. The coil component includes: a body portion including a magnetic material; a coil portion disposed in the body portion; and an electrode portion disposed on the body portion, wherein the coil portion includes a support member having groove portions formed in at least one surface thereof and a coil conductor layer filling the groove portions and protruding onto the at least one surface of the support member, the groove portions having planar spiral shapes.

There are provided a coil component and a method of manufacturing the same. The coil component includes: a body portion including a magnetic material; a coil portion disposed in the body portion; and an electrode portion disposed on the body portion, wherein the coil portion includes a support member having groove portions formed in at least one surface thereof and a coil conductor layer filling the groove portions and protruding onto the at least one surface of the support member, the groove portions having planar spiral shapes.

The invention comprises a method for manufacturing an inductor, comprising the steps of: casting a cast winding comprising an inner cavity; inserting a first inductor core subsection into the inner cavity; inserting a second inductor core subsection into the inner cavity; and mechanically coupling the first inductor core subsection to the second inductor core subsection to form an inductor core wound by the cast windings. The method of manufacturing optionally includes the steps of: forming at least a portion of the cast winding into an arced helical shape; forming the first inductor core subsection and the second inductor core subsection into elements of a torpid shaped inductor core; deforming the cast winding to physically allow the step of inserting the first inductor core subsection into the inner cavity; and/or deforming at least a portion of the cast winding into an arced helical coil shape after the step of inserting.

There is provided a solenoid device in which a fixed wall and a supporting wall having a protruding portion are provided in a flange portion of a bobbin, in which a surge absorption device is held in a space between the supporting wall and the fixed wall, and in which the protruding portion presses the surge absorption device; furthermore, a starter having the solenoid device is provided.

A resin producing method is a method of producing a resin with which an insulating structure formed on an outer peripheral portion of a conductor is impregnated, the method including: a filler mixing step of mixing a nanofiller at a ratio of 15 wt % or more with an epoxy resin to form a mixture; a shear mixing step of causing the mixture to be subjected to shear mixing; a diluent mixing step of mixing a reactive diluent that reduces a viscosity of the epoxy resin, with the mixture after the shear mixing step; and a curing agent mixing step of mixing an acid anhydride curing agent with the mixture after the diluent mixing step.

An apparatus and method for physical vapor deposition includes a magnetron having a plurality of electromagnets disposed between a base and a magnetic conductive plate. The magnetron includes a plurality of individually controlled electromagnets between a base and an electromagnetic plate. The magnetron controls the polarity and strength of current supplied to the respective electromagnets to generate magnetic fields that confine electrons to areas near a target material within the deposition chamber.

A reactor including: a coil including a pair of winding portions that are arranged side by side; a magnetic core including inner core portions that are provided inside the winding portions, and an outer core portion that is exposed to the outside from the winding portions; and a casing that houses a combined member that includes the coil and the magnetic core combined with each other. The casing includes: a bottom plate on which the combined member is placed; and a side wall that stands on the bottom plate, and the side wall is provided with a cutout for the core, through which at least a portion of the outer core portion is exposed to the outside of the casing.

A reactor has a coil and a loop-shaped magnetic core disposed extending inside and outside the coil. The coil has two winding portions that are disposed laterally side-by-side, and the magnetic core has two inner core portions that are disposed inside the winding portions, and two outer core portions that are disposed outside the winding portions and connect end portions of the two inner core portions. The reactor includes an inner resin portion obtained by filling a space between inner peripheral faces of the winding portions and the inner core portions, end face intervening members disposed between end faces of the winding portions and the outer core portions, and spacer pieces that are integrated with the end face intervening members and are disposed extending between an entirety of mutually opposing inward faces of the two winding portions.

A coil electronic component includes a body including an insulator; a coil portion embedded in the body; aggregates dispersed in the insulator, where the aggregates each comprise a plurality of magnetic particles, coating layers formed on surfaces of the aggregates using an insulating material, and external electrodes connected to the coil portion.