A coil component includes a body and a coil conductor embedded in the body. The body includes a magnetic layer and a non-magnetic layer. The magnetic layer is formed of a composite material including a metal particle and a resin material, and the non-magnetic layer is arranged to block between at least one of top and bottom surfaces of the body and the coil conductor.

An internal combustion engine ignition coil includes: a center core; a primary coil provided on an outer side of the center core; a secondary coil provided on an outer side of the primary coil; and a side core provided on an outer side of the primary coil and the secondary coil and formed by stacked electromagnetic steel sheets, the side core having one contact portion in contact with one end surface of the center core and another contact portion in contact with another end surface of the center core with a magnet therebetween. The side core is composed of a plurality of side core portions fitted to each other to be movable relative to each other in a longitudinal direction of the center core.

There is provided a static induction electric apparatus capable of improving smoothnesses of magnetic flux distributions inside iron cores. A stationary induction electric apparatus including wound iron cores and a winding, wherein each of the wound iron cores is a laminated body of magnetic materials that are lap-joined and at least provided with a step lap joint portion on an inner peripheral side of the wound iron core, and gap distances between ends of the step lap joint potion are gradually shortened toward an outer peripheral side of the wound iron core. Although a configuration of the stationary induction electric apparatus is simple, the stationary induction electric apparatus having improved smoothnesses of magnetic flux distributions inside the iron cores can be provided.

A transformer includes a primary winding, a secondary winding, a first core, and a second core. The primary winding and the secondary winding are inserted into the first core and the second core, and the first core and the second core are disposed to face each other. The first core includes one first core portion, and the second core includes a plurality of second core portions. The first core is a lower core, and the second core is an upper core. The first core and the second core are disposed to face each other with a gap interposed between the first core and the second core. The first core and the second core include a heat-resistant elastic body in the gap, and are disposed to face each other. Each of the second core portions is disposed with a heat-resistant elastic body interposed between the second core portions.

A coil component includes a body and a coil conductor embedded in the body. The body includes a magnetic layer and a non-magnetic layer. The magnetic layer is formed of a composite material including a metal particle and a resin material, and the non-magnetic layer is arranged not to extend through a winding portion of the coil conductor or not to entirely extend through the body.

A magnetic component for an electronic circuit includes first and second bobbins having respective core-receiving passageways. Each bobbin includes multiple slots with a winding insert in each slot. The winding inserts function as windings as well as guides for winding a coil of wire around the respective bobbins. The first and second bobbins are positioned on respective first and second legs of a magnetic core. The coils of wire are wound on the two bobbins in opposite directions such that the magnetic fluxes provided by the coils are in phase. The winding inserts have connection prongs that can be positioned in opposite direction such that the winding inserts of the first bobbin are connectable to a first printed circuit board and the winding inserts of the second bobbin are connectable to a second printed circuit board.

A coil component in which occurrence of plating elongation is further suppressed and an inductance value is higher. A coil component includes an element body including metal magnetic particles, a coil conductor inside the element body, and a plurality of external electrodes on a surface of the element body. The element body has a substantially rectangular parallelepiped shape including upper and lower surfaces substantially orthogonal to a winding axis of the coil conductor, first and second side surfaces facing each other, and third and fourth side surfaces facing each other. An average particle diameter of each of metal magnetic particles constituting the upper surface, metal magnetic particles constituting the lower surface, metal magnetic particles constituting the first side surface, and metal magnetic particles constituting the second side surface is smaller than an average particle diameter of metal magnetic particles existing inside a winding portion of the coil conductor.

A high voltage (HV) apparatus insulated with an insulating gel includes at least two electrically conductive elements, such as a head transformer cover, a head housing base, a core casing, a primary conductor, bottom external housing, a bottom support flange, and/or a core. At least one of the electrically conductive elements has a coating made of solid insulating material separating the surface of the conductive element from the insulating gel and adapted for limiting electron emission from the conductive elements into the insulating gel.

A deposition method includes depositing an adhesive layer on a workpiece to be processed and depositing a magnetic/isolated unit, where the magnetic/isolation unit includes at least one pair of a magnetic film layer and an isolation layer that are alternately disposed. The deposition method of the magnetic thin film laminated structure, the magnetic thin film laminated structure and the micro-inductive device provided by the disclosure can increase a total thickness of the magnetic thin film laminated structure, thereby broadening the application frequency range of the inductive device fabricated thereby.

A drum-type magnetic body includes: a pair of flange parts that are facing each other; and a shaft part connecting the pair of flange parts, wherein an outer periphery of a cross section of the shaft part in a direction orthogonal to an axis of the shaft part has an oval shape constituted by a pair of parallel straight parts and a pair of arc parts connecting end parts of the pair of parallel straight parts, and the flange parts each have an outer principal face running orthogonal to the axis of the shaft part, and the pair of parallel straight parts are running in parallel with a longitudinal direction of the principal face of the flange part.