A coil forming apparatus includes: a coil winding jig that winds the belt-shaped coil, the coil winding jig including a plurality of comb-shaped grooves on an outer periphery thereof; a coil conveying mechanism that pivotally conveys the belt-shaped coil along at least a portion of the outer periphery of the coil winding jig; and guide members guide the belt-shaped coil in an arc shape while being in contact with the side ends. The guide members guide the belt-shaped coil so as to be in an arc shape having a diameter smaller than an outer diameter of the coil winding jig in a second half portion of the belt-shaped coil upon pivot conveying, and allow the plurality of straight portions to be inserted into a respective one of the plurality of comb-shaped grooves of the coil winding jig.

A semiconductor package substrate with embedded passive devices and methods of forming the same is provided. Embedded passive devices include inductors and inductor modules and methods of forming the same are provided. Embedded inductors may be formed by deposition of magnetic core material, trenching of one or more channels, and placement of conductive wires to form an module embeddable in the semiconductor package substrate core. Provided are methods and apparatus for formation of embeddable pot-core, toroidal, and helical inductors.

A semiconductor package substrate with embedded passive devices and methods of forming the same is provided. Embedded passive devices include inductors and inductor modules and methods of forming the same are provided. Embedded inductors may be formed by deposition of magnetic core material, trenching of one or more channels, and placement of conductive wires to form an module embeddable in the semiconductor package substrate core. Provided are methods and apparatus for formation of embeddable pot-core, toroidal, and helical inductors.

An apparatus and method for winding electrical coils (electromagnets) is described. A self-propelled and self-referencing winding vehicle uses features on a winding bobbin to guide the direction and/or orientation of the vehicle, while laying electrical conductor material (e.g., high-temperature superconducting (HTS) tapes) as it traverses the bobbin. The vehicle may wind electrical coils with complex shapes. In some embodiments, the self-propelled, self-referencing (SPSR) vehicle may perform other magnet fabrication and assembly procedures.

This invention entails the use of fractal shapes as cores for electromagnets, and a concurrent shape of a fractal for the windings which surround it. The novelty of this invention lies not only with the shaping, but the advantage of such shaping, which includes producing a smaller form factor electromagnet for the same desired magnetic field strength, when compared to a conventional electromagnet. It will be appreciated that a range of devices including electromagnets, based on such fractal shaping, are additionally novel and include but are not limited to solenoid switches, relays, and other devices in which the fractal electromagnets are used to make a change in state of some device.

Structures and methods for reducing physical space of two or three inductors while maintaining low magnetic coupling between the inductors are presented. According to one aspect, the inductors share their volume spaces and have (substantially) orthogonal far field magnetic vectors. According to another aspect, the inductors are fabricated on planar layers of a stacked structure that includes conductive and non-conductive layers. According to an additional aspect, a coil structure of one of the inductors passes through a volume space of another inductor. According to another aspect, coil structures of two of the inductors are interlaced. According to another aspect, relative placement of two coil structures of two inductors is based on a number of windings of one of the two coil structures above and below the other coil structure. According to another aspect, a shape of a coil structure of one inductor follows a near field magnetic vector of another inductor.

Structures and methods for reducing physical space of two or three inductors while maintaining low magnetic coupling between the inductors are presented. According to one aspect, the inductors share their volume spaces and have (substantially) orthogonal far field magnetic vectors. According to another aspect, the inductors are fabricated on planar layers of a stacked structure that includes conductive and non-conductive layers. According to an additional aspect, a coil structure of one of the inductors passes through a volume space of another inductor. According to another aspect, coil structures of two of the inductors are interlaced. According to another aspect, relative placement of two coil structures of two inductors is based on a number of windings of one of the two coil structures above and below the other coil structure. According to another aspect, a shape of a coil structure of one inductor follows a near field magnetic vector of another inductor.

A coil-forming apparatus for forming a bare coil wire into a U-shape, the apparatus comprising: one bare coil-wire holding unit that winds and holds a bare coil wire; a take-up drum that includes one or a plurality of housing units that house the bare coil wire supplied from the one bare coil wire holding unit at a circumference; a cutting member that cuts the bare coil wire housed in housing units and wound around the take-up drum, at a portion of the circumference of the take-up drum; a drawing member for drawing the bare coil wire outward in a radial direction of the take-up drum after being cut by the cutting member, from a position separated from the cutting member; and a forming unit that forms the bare coil wire drawn by the drawing member into a U-shape.

A method of fabricating an electromagnet includes obtaining a first flexible PCB that includes one or more first conductive coiled traces and obtaining a second flexible PCB that includes one or more second conductive coiled traces. The first flexible PCB is bent into a shape having at least one curve or corner. With the first flexible PCB having been bent into the shape, the second flexible PCB is then bent into the shape: the second flexible PCB is positioned adjacent to the first flexible PCB to conform with the first flexible PCB.

A winding coil component includes a drum-shaped core including a winding core having a substantially n-sided prism shape having n side surfaces positioned around a central axis. The n side surfaces include a first side surface facing a mounting substrate and wire wound around the winding core portion and forming a multilayer portion in layers including a superposition beginning portion located in a region other than a region above an n-th side surface to which the n side surfaces are arranged in order from the first side surface in a winding direction in which a lowest layer of the multilayer portion winds toward the superposition beginning portion.