A method is provided for manufacturing a transformer. The method includes preparing a core, a first coil portion that covers at least part of the core, and a second coil portion that covers a periphery of the first coil portion perpendicular to a central axis of winding of the first coil portion. The first and second coil portions each include a bobbin and a coil wound therearound. The coil of the first or second coil portion is an edgewise coil. The method also includes: screwing the bobbin and coil of the first coil portion with each other, and screwing the bobbin and coil of the second coil portion with each other; and attaching the second coil portion to the outside of the first coil portion perpendicular to the central axis of winding of the first coil portion, and attaching the core to sandwich the first and second coil portions in an axial direction of the first coil portion.

A high temperature superconductor (HTS) cable comprising at least one coil form comprising a helical channel formed on an exterior surface of the coil form and the helical channel extending at least partially along an axial length of the coil form and a plurality of high temperature superconductor (HTS) tape layers positioned within the helical channel of the coil form. A method for operating a winding machine to produce a high temperature superconductor (HTS) cable comprising a plurality of coil forms comprising a helical channel formed on an exterior surface of the coil form.

A high temperature superconductor (HTS) cable comprising at least one coil form comprising a helical channel formed on an exterior surface of the coil form and the helical channel extending at least partially along an axial length of the coil form and a plurality of high temperature superconductor (HTS) tape layers positioned within the helical channel of the coil form. A method for operating a winding machine to produce a high temperature superconductor (HTS) cable comprising a plurality of coil forms comprising a helical channel formed on an exterior surface of the coil form.

A manufacturing method of a coil component comprising the steps of: preparing a coil assembly body in which a coil is attached on a magnetic core and a mold body which is formed with a cavity portion in the inside thereof and which includes at least one opening portion, putting a viscous admixture including magnetic powders and thermosetting resin and the coil assembly body in the cavity portion, pushing the put-in viscous admixture in the mold body, and thermally-curing the pushed-in viscous admixture and forming a magnetic exterior body which covers the coil assembly body.

A manufacturing method of a coil component comprising the steps of: preparing a coil assembly body in which a coil is attached on a magnetic core and a mold body which is formed with a cavity portion in the inside thereof and which includes at least one opening portion, putting a viscous admixture including magnetic powders and thermosetting resin and the coil assembly body in the cavity portion, pushing the put-in viscous admixture in the mold body, and thermally-curing the pushed-in viscous admixture and forming a magnetic exterior body which covers the coil assembly body.

A current transformer assembly for harvesting power from a primary conductor, such as a power line, for operating electronics, where the assembly is secured to the conductor while the conductor is connected. The assembly includes a current transformer having a transformer structure with a central opening that accepts the primary conductor and a spindle member for accepting a current transformer magnetic tape operating as the core of the current transformer. The assembly also includes a tape carrier secured to the structure on which the transformer tape is wound, and a winding device operable to unwind the transformer tape from the tape carrier and wind the tape onto the spindle member.

A coil component includes a magnetic section containing a resin material and a filler component containing a magnetic metal, a coil conductor embedded in the magnetic section, and outer plating electrodes electrically connected to the coil conductor. At least one end portion of the magnetic section has a concave indentation. The surface of the indentation is overlaid with a hydrophobic insulating film. The surface of the magnetic section except for the indentation and extended end surfaces of the coil conductor are overlaid with an insulating protective film. The magnetic section, the coil conductor, and the protective film form a component body. The outer electrodes are placed on both end portions of the component body that exclude the indentation.

A coil component includes a magnetic section containing a resin material and a filler component containing a magnetic metal, a coil conductor embedded in the magnetic section, and outer plating electrodes electrically connected to the coil conductor. At least one end portion of the magnetic section has a concave indentation. The surface of the indentation is overlaid with a hydrophobic insulating film. The surface of the magnetic section except for the indentation and extended end surfaces of the coil conductor are overlaid with an insulating protective film. The magnetic section, the coil conductor, and the protective film form a component body. The outer electrodes are placed on both end portions of the component body that exclude the indentation.

An art includes a core part 10 provided with central leg parts 13A, 13B and right and left leg parts 11A, 11B, 12A, 12B arranged on both sides of the central leg parts 13A, 13B; a coil part 20 formed by winding a conducting wire around a circumference of the central leg parts 13A, 13B; and a heat transfer sheet 30 for dissipating heat in the coil part 20 to outside, in which the coil part 20 is configured in such a manner that a rectangular wire is wound around the circumference of the central leg parts by edgewise winding and a circumference of the coil part 20 wound therearound is abutted on the heat transfer sheet 30.

An art includes a core part 10 provided with central leg parts 13A, 13B and right and left leg parts 11A, 11B, 12A, 12B arranged on both sides of the central leg parts 13A, 13B; a coil part 20 formed by winding a conducting wire around a circumference of the central leg parts 13A, 13B; and a heat transfer sheet 30 for dissipating heat in the coil part 20 to outside, in which the coil part 20 is configured in such a manner that a rectangular wire is wound around the circumference of the central leg parts by edgewise winding and a circumference of the coil part 20 wound therearound is abutted on the heat transfer sheet 30.