A transformer is configured to include a pair of cores and that each have an inner leg, wherein a primary winding that is wound around a bobbin having a hollow into which the inner legs of the cores and are inserted, and a secondary winding that has a hollow into which the inner legs of the cores and are inserted and that is constituted of a conductor formed by die-cutting a metal plate into a ring, are dispersedly arranged over the inner legs of the cores and. The bobbin has bobbin support portions that come into contact with a surface of a printed circuit board on which the transformer is implemented.

A transformer is configured to include a pair of cores that each have an inner leg, wherein a primary winding that is wound around a bobbin having a hollow into which the inner legs of the cores are inserted and that is hermetically sealed with resin material, and a secondary winding that has a hollow into which the inner legs of the cores are inserted and that is constituted of a conductor formed by die-cutting a metal plate into a ring are dispersedly arranged over the inner legs of the cores.

A server power transformer structure includes: a first iron core, a first projection being configured thereon; an axle body, in combination with the first projection, and configured with four copper foils and first spools, each copper foil, first spool being respectively put around the axle body, at least one first, second, third, fourth connection portion being extended from bottoms of the respective copper foils, and the first spool being sandwiched between each two adjacent copper foils; a second iron core, a second projection being configured thereon, a second spool being put around the second projection, and the second projection being in combination with the axle body; and a solder bar, having a combination portion, first and second through holes, the combination portion being in electric connection with a main board, the connection portions being inserted in and bonded with the respective through holes.

A combined transformer/inductor device includes a core having a central core leg and an outer core leg spaced apart from the central core leg, an inner bobbin disposed around the central core leg, an outer bobbin disposed around the inner bobbin and the central core leg and having an upper portion having a first oblong portion disposed around the outer core leg, a lower portion having a second oblong portion disposed around the outer core leg, and a central portion disposed around the inner bobbin and the central core leg, a first winding wound around the inner bobbin, and a second winding wound around the outer bobbin, the second winding having a first portion wound around the first oblong portion, a second portion wound around the central portion, and a third portion wound around the second oblong portion.

The present invention relates to a lens driving apparatus, comprising: a cover member which comprises an upper plate and a side plate extending downwardly from the upper plate; a housing which is located in an inner space formed by the upper plate and the side plate; a base which is positioned below the housing; a first driving unit which is positioned in the housing; a second driving unit which is located in the base and has an electromagnetic interaction with the first driving unit; and a side support member which elastically supports the housing with respect to the base, wherein the cover member comprises a first round portion formed to be rounded in at least a part of portion at which the upper plate and the side plate meet, and the housing comprises a second round portion which is formed in a part of the housing corresponding to the first round portion and has a curvature radius which is smaller than or equal to a curvature radius of the first round portion.

Electrical current transducer including a magnetic core comprising a magnetic circuit gap, a magnetic field detector comprising a sensing portion positioned in the magnetic circuit gap, an insulating support body comprising a coil support portion and a coil terminal connection portion, and a secondary coil formed from a wire wound around the coil support portion. The coil support portion has a generally U-shaped cross-sectional profile comprising a base wall, a radially inner wall extending from the base wall and a radially outer wall extending from the base wall, the radially inner and outer walls having a height configured such that open end edges thereof extend slightly beyond an axial thickness of the magnetic core including any manufacturing tolerances such that the open end edges are folded inwards around corners of the magnetic core by the coil wound around the magnetic core housing.

A magnetic assembly includes a bobbin and first and second cores. Each core has a main body. At least one of the cores has first and second outer legs and a center leg extending from the main body. The bobbin includes a first channel on a first end flange and a second channel on a second end flange. Each channel includes a plurality of crushable ribs that extend into the channel. The first and second cores are inserted into the respective first and second channels to engage and crush the crushable ribs. The crushed ribs frictionally engage the main bodies of the two cores to retain the two cores in a fixed relationship with the bobbin without requiring tape or glue. In one embodiment, both cores are E-cores. In another embodiment, one core is an extended E-core and the other core is an I-core.

A coil device including a bobbin, a first wire having a first coil part wound around the bobbin, a second wire having a second coil part wound around the bobbin, and cores and installed to the bobbin. Main inner leg sections and of the cores and are arranged at the inside of the first coil part and the second coil part. First sub-inner leg sections and of the cores and are arranged at the inside of the first coil part and an outside of the second coil part. Second sub-inner leg sections and of the cores and are arranged at the inside of the second coil part and at an outside of the first coil part.

A magnetic assembly includes a single bobbin structure that supports a first coil and a second coil. A first E-core has a center leg positioned within the first coil. A second E-core has a center leg positioned within the second coil. An I-core is positioned between the first E-core and the second E-core. The I-core completes a first set of magnetic paths between the center leg and outer legs of the first E-core and also completes a second set of magnetic paths between the center leg and outer legs of the second E-core. The two E-cores and the I-core are stacked in a vertical E-I-E configuration with respect to a common set of pin rails. In one embodiment, the first coil and the first E-core are configured as a transformer; and the second coil and the second E-core are configured as an inductor.

A reactor including an assembly in which a coil, a magnetic core, and a holding member are combined, wherein the holding member includes: an outer surface facing a side on which the outer core portion of the magnetic core is disposed; a recessed core accommodating portion into which a part of the outer core portion is fitted; and a first holding portion facing a first outer circumferential surface of the outer core portion, the first holding portion includes: a plate-shaped piece extending from the outer surface to the first outer circumferential surface; and a pressing portion that presses the first outer circumferential surface, the plate shaped piece has a first surface flush with an inner wall surface of the core accommodating portion, and the pressing portion protrudes toward the first outer circumferential surface relative to the first surface.