Abstract: A coil component including a core, first metal terminals, second metal terminals and a wire. The first metal terminals and second metal terminals have mounting portions provided above the mounting surface and aligned above the mounting surface. One of the mounting portions of the first metal terminals has a first end surface facing one of the mounting portions of the second metal terminals and a second end surface other than the first end surface, and the first end surface has a chopped trace where surface roughness is higher than surface roughness of the second end surface.

Abstract: A magnetic core for a transformer, which includes a closed ring with a thick part and a thin part. The thin part is magnetically saturated before the thick part when excited by the same increasing magnetic fields. The thin part only operates briefly at or near first quadrant saturation point or a third quadrant saturation point and, for the rest of the time, it operates in a state between the first quadrant saturation point and the third quadrant saturation point. The present invention overcomes the drawbacks of the conventional magnetic core for a self-excitation push-pull type converter, and significantly improves the efficiency of the converter when it is under a light load, and further improves its efficiency while under a rated load. As the number of turns of the coil on the magnetic saturation transformer is reduced, the working frequency of the converter is improved while still keeping the loss low.

Abstract: A conductor assembly and method for constructing an assembly of the type which, when conducting current, generates a magnetic field or which, in the presence of a changing magnetic field, induces a voltage. In one embodiment the method provides a first insulative layer tubular in shape and including a surface along which a conductor segment may be positioned. A channel formed in the surface of the insulative layer defines a first conductor path and includes a surface of first contour in cross section along a first plane transverse to the conductor path. A segment of conductor having a surface of second contour in cross section is positioned at least partly in the channel and extends along the conductor path. Along the first plane, contact between the conductor surface of second contour and the channel surface of first contour includes at least two separate regions of contact.

Abstract: Embodiments of a variable inductor and a communication device are generally described herein. The variable inductor may comprise a signal wire and a control wire to receive a direct current (DC) control current. The variable inductor may further comprise a magnetic material integrated with the signal wire and the control wire. When a DC control current applied to the control wires takes a first current value, an inductance between an input node and an output node on the signal wire may take a first inductance value. When the DC control current takes a second current value, the inductance between the input node and the output node may take a second inductance value.

Abstract: A variable coupled inductor includes a first core, two conducting wires, a second core and a magnetic structure. The first core includes two first protruding portions, a second protruding portion and two grooves, wherein the second protruding portion is located between the two first protruding portions and each of the grooves is located between one of the first protruding portions and the second protruding portion. Each of the conducting wires is disposed in one of the grooves. The second core is disposed on the first core. A first gap is formed between each of the first protruding portions and the second core and a second gap is formed between the second protruding portion and the second core. The magnetic structure is disposed between the second protruding portion and the second core and distributed symmetrically with respect to a centerline of the second protruding portion.

Abstract: Inductive elements comprising anisotropic media and biasing coils for magnetically biasing thereof and methods of manufacture and operation for use in applications such as microelectronics. Application of an electrical current through the bias coils generates a magnetic field that biases the magnetic material such that a desirable orientation of anisotropy is achieved throughout the magnetic core and enables modulation of the inductive response of the device. Electrical conductors coupled to interconnects are magnetically coupled to magnetic core layers to produce self and/or mutual inductors.

Abstract: The invention relates to a step switch, comprising a pre-selector and a fine selector. The invention is characterized in that the step switch has a connection (36) between the pre-selector and the fine selector (18), at least one coupling switch (38) being arranged in said connection. A pre-selector can be switched in a largely gas-free manner by means of said switchable connection with the aid of the fine selector.

Abstract: A power inductor includes a substrate having a through hole in a central portion thereof; a first internal coil pattern and a second internal coil pattern each having a spiral shape and provided on opposite surfaces of the substrate outwardly of the through hole; a magnetic body enclosing the substrate on which the first internal coil pattern and the second internal coil pattern are provided, end portions of the first internal coil pattern and the second internal coil pattern being exposed to opposite end surfaces thereof; a first external electrode and a second external electrode provided on the opposite end surfaces of the magnetic body to be connected to the end portions of the first internal coil pattern and the second internal coil pattern, respectively; and an anti-plating layer covering the magnetic body between the first external electrode and the second external electrode.

Abstract: Provided is a coil mounting structure for a device that comprises a primary coil to be supplied with an alternating current, and a secondary coil arranged facing the primary coil and configured to supply an electric power to a load provided in a housing by using an induced voltage generated by an electromagnetic field produced by the primary coil. The coil mounting structure comprises at least one mounting part provided in a region of the housing, the region facing the primary coil, and the at least one mounting part is configured to hold the secondary coil to the housing. The at least one mounting part comprises at least one gap area configured to interrupt a circuit generated by the at least one mounting part.

Abstract: An inductive touch sensor comprises an inductors disposed in or on a deformable substrate. When a force is applied to the deformable substrate the physical shape of the inductor will change and thereby change its inductance value. The change in the inductance value can be detected and used to indicate actuation of an associated touch key of the inductive touch sensor. A plurality of inductive touch sensors may be used to form a touch panel.

Abstract: A coil component includes a magnetic body including first and second coil patterns respectively disposed on first surfaces of two substrates spaced apart from each other and having cores and third and fourth coil patterns respectively disposed on second surfaces of the two substrates; and first to fourth external electrodes disposed on outer peripheral surfaces of the magnetic body and connected to the first to fourth coil patterns, respectively. A gap member is disposed between the two substrates while being located in at least one of upper and lower regions of the magnetic body in a thickness direction.

Abstract: A coil electronic component includes a magnetic body having an internal coil part embedded therein, in which the internal coil part includes an insulating substrate, a first insulator, a coil conductor, and a second insulator. The first insulator is disposed on at least one of first and second main surfaces of the insulating substrate and has a groove formed therein. The coil conductor is formed inside the groove. The second insulator encloses the insulating substrate, the first insulator, and the coil conductor. The first insulator may be formed to a thickness larger than (and no more than 40 ?m thicker than) a thickness of the coil conductor on the insulating substrate. The first insulator may be formed to a width of 3 ?m to 50 ?m. Further, the second insulator may extend to a thickness 1 ?m to 20 ?m larger than that of the first insulator on the insulating substrate.

Abstract: A yoke clamp bracket for a transformer core. The yoke clamp bracket may comprise a body portion having a plurality of center holes near each end, a plurality of slots for coil barriers, a plurality of slots for wiring, and attachment points for side brackets and vertical supports. The yoke clamp bracket may be mounted to a transformer core by connectors extending through the plurality of center holes. The yoke clamp bracket may be constructed from a lightweight material with low density such that it displaces a larger quantity of tank oil and reduces the weight of a distribution transformer.

Abstract: A coil device includes a core (20) having a columnar shaft (22), a first winding part (42) and a second winding part (46) that are wound around the shaft, and a terminal part (52) connected with ends of the first winding part and ends of the second winding part. A partition portion (30) provided on an outer peripheral surface (22a) of the shaft of the core protrudes from the outer peripheral surface toward the outer diameter direction and divides a part of the first winding part and a part of the second winding part.

Abstract: A resin-mold core includes right and left leg portions, and a yoke portion interconnecting those. The resin-mold core includes a magnetic core, and a mold component having the magnetic core embedded therein by molding. Openings where the magnetic core in the mold component is exposed are formed in multiple faces of the mold component that are upper, lower, front, rear, and right and left faces. A part of the yoke portion of the resin-mold core corresponding to a location where terminals are drawn to the exterior of the core from coils attached to the outer circumferences of the leg portions of the core has no opening formed in the multiple faces of the mold component. Positioning members to coaxially align the leg portions of the opposing resin-mold core are formed in abutting faces of the leg portions of the resin-mold core.

Abstract: A coil component includes a magnetic substrate, an insulating layer provided on the magnetic substrate and having conductive coils formed in the insulating layer, and a reinforcing layer provided on the insulating layer and having a coefficient of thermal expansion lower than a coefficient of thermal expansion of the insulating layer. High attenuation characteristics and mountability of a coil component may be improved and the deviation of the coefficient of thermal expansion between the components may be alleviated.

Abstract: A laminated coil component has an element body formed by laminating a plurality of ceramic layers, and a coil conductor disposed inside the element body. The coil conductor has coil pattern portions disposed on the plurality of the ceramic layers and including line portions and land portions disposed at ends of the line portions, and pattern connecting portions connecting the land portion to each other between the coil pattern portions arranged adjacently in a laminating direction of the ceramic layers. The land portions overlap with the line portions located on the opposite side of the pattern connecting portions in the laminating direction when viewed in the laminating direction such that the centers of the land portions do not overlap with the line portions located on the opposite side of the pattern connecting portions in the laminating direction when viewed in the laminating direction.

Abstract: A coil component includes: a pillar part, quadrangular planar parts formed at both ends of the pillar part, a coil formed by winding an insulating sheath conductor around the pillar part, electrode terminals that are electrically connected to both ends of the coil, and an outer sheath covering the coil at least partially; wherein the pillar part and quadrangular planar parts are made of ferrite material; the outer sheath contains metal magnetic grains and resin material; and based on a section obtained by cutting through the center of the pillar part vertically to the long-axis direction of the pillar part, the cross-section area of the pillar part is greater than the cross-section area of the outer sheath.

Abstract: An inductor is disclosed, the inductor comprising: a T-shaped magnetic core, being made of a material comprising an annealed soft magnetic metal material and having a base and a pillar integrally formed with the base, wherein the volume of the base is V1 and the volume of the pillar is V2; a coil wound on the pillar; and a magnetic body encapsulating the pillar, the coil and a portion of the base, wherein the ratio of V1 to V2 (V1/V2) is configured in a pre-determined range so as to reduce the total core loss of the inductor with the equivalent permeability of the inductor being between 28.511 and 52.949.

Abstract: An RF transformer is provided. The RF transformer includes a ferrite core and a winding coil structure formed around the ferrite core. The winding coil structure is in electrical contact with a center portion of the ferrite core. The winding coil structure is essentially electrically and physically spaced from external portions of the ferrite core.