A coil component includes a columnar winding core and flanges at ends of the winding core in positive and negative X directions and which protrude outward in a Z direction orthogonal to the X direction. A first wire is wound around the winding core. A metal terminal attached to the flange includes a reception portion extending away from the winding core in a length direction. A direction in which a dimension of the reception portion is the smallest in directions orthogonal to the length direction is a thickness direction, and a width direction is orthogonal to the length and thickness directions. The reception portion and the first wire are connected by a melted portion whose maximum dimension in the width direction is larger than a maximum dimension of the reception portion in the width direction and is at a portion away from the reception portion in the thickness direction.

A coil component includes a winding core section. A first flange section and a second flange section are disposed on a first end and a second end of the winding core section in the axial direction, respectively. A second terminal electrode is disposed on the first flange section on a second end side in a first direction perpendicular to the axial direction. A fourth terminal electrode is disposed on the second flange section on a second end side in the first direction. When in a portion of the second wire wound around the winding core section, a single round nearest an end connected to the fourth terminal electrode is defined as the Nth turn, at least two turns of the wire closer to the second flange section than the Nth turn of the second wire in the axial direction are present.

An inductor at least includes an iron-core, a first coil and a second coil. A first coil terminal of the first coil is fixed at a first terminal and a second coil terminal of the second coil is fixed at a second terminal. The first coil and the second coil are wound around the iron-core using a symmetric winding manner, the symmetric winding manner at least includes a first winding manner, a second winding manner and a third winding manner. A third coil terminal of the first coil is fixed at a third terminal and a fourth coil terminal of the second coil is fixed at a fourth terminal. The second winding manner and the third winding manner are manners of a turn of either the first coil or the second coil crossing over a turn of either the second coil or the first coil.

A taping reel with a plurality of coil components packed in the tape reel, comprising a tape including a plurality of pockets arranged along a longitudinal direction and each having one of the coil components stored therein, and a reel around which the tape is wound. The coil components each include a core including a winding core part, and a coil wound around the winding core part and including a plurality of wires. The coil includes a twisted wire portion in which the plurality of wires is twisted together. The plurality of coil components includes first coil components having the twisting direction of the twisted wire portion opposite to the twisting direction of the twisted wire portion of other coil components.

A method of manufacturing an arrangement for transferring energy from a primary unit conductor arrangement by a magnetic or an electromagnetic field to a secondary unit conductor arrangement in which the field induces an electric voltage, wherein the method comprises the steps: arranging a conductor arrangement selected from the primary unit conductor arrangement and the secondary unit conductor arrangement in a first layer of the arrangement and providing a second layer, so that the second layer is located on a back side of the first layer opposite to a front side of the first layer on which the magnetic or electromagnetic field is transferred or received during operation, wherein the second layer is made of a constituent material, comprising magnetic and/or magnetizable particles dispersed within the constituent material and wherein the magnetic or magnetizable particles are moved with respect to their positions and/or orientations within the constituent material before the constituent material is hard and the movement is caused by a magnetic field.

A method of manufacturing an arrangement for transferring energy from a primary unit conductor arrangement by a magnetic or an electromagnetic field to a secondary unit conductor arrangement in which the field induces an electric voltage, wherein the method comprises the steps: arranging a conductor arrangement selected from the primary unit conductor arrangement and the secondary unit conductor arrangement in a first layer of the arrangement and providing a second layer, so that the second layer is located on a back side of the first layer opposite to a front side of the first layer on which the magnetic or electromagnetic field is transferred or received during operation, wherein the second layer is made of a constituent material, comprising magnetic and/or magnetizable particles dispersed within the constituent material and wherein the magnetic or magnetizable particles are moved with respect to their positions and/or orientations within the constituent material before the constituent material is hard and the movement is caused by a magnetic field.

Devices and methods for generating and applying stimulated acupuncture needles to one or more acupuncture points on a body of an individual suffering from one or more ailments using magnetic fields. The acupuncture device is configured for generating magnetic fields to stimulate acupuncture without using human manual manipulation. The acupuncture device may comprise a control unit and one or more acupuncture needle stimulation units. Each one or more acupuncture needle stimulation unit is functionally connected to the control unit by a cable or lead. The control unit may include a variable frequency generator configured to deliver various power levels, direct voltages, or a combination of various power levels and direct voltages to the acupuncture needle stimulation units, alone or in combination with other stimuli. Special magnetic coil configurations may be used to boost coil efficiently and reduce the required energy to generate comparable magnetic fields.

In a coil component, a first wire has a part that extends in a spiral shape along a peripheral surface of a winding core part with a central axis being the axis of rotation. A second wire has a part that extends in a spiral shape outside the peripheral surface of the winding core in a radial direction centered on the central axis with the central axis being the axis of rotation. The second wire includes an outer part and an inner part. The inner part extends continuously along the peripheral surface of the winding core part in a spiral shape through a range greater than 360 degrees. The outer part extends in a spiral shape outside the inner part in a radial direction centered on the central axis. The inner part is located between the L-th turn and the (L+1)-th turn of the first wire.

The transformer device includes a magnetic core having a coil section with a first flange and a second flange at two ends of the coil section. The first and second flanges respectively have a number of inner and outer electrodes. The electrodes are of equal dimensions. The outer electrodes are positioned relatively closer to the coil section than the inner electrodes. A number of windings are wound either clockwise or counterclockwise around the coil section. Each winding has its first end connected to an electrode on the first flange, and its second end connected an electrode on the second flange. Two center taps are provided, each having an end connected to an electrode on the first flange and another end connected to an electrode on the second flange. Through the above arrangement, signal paths along the windings are almost identical, thereby enhancing the balance of impedance matching.

A winding core part includes a two-layer winding region, consisting of a first layer in which a first wire is wound around the winding core part and a second layer in which a second wire is wound around the first layer, and a non-contact winding region in which the first and second wires are wound without contacting each other. The non-contact winding region located is between the first flange part and the two-layer winding region, and the two-layer winding region includes switching parts that are for switching the axial direction positional relationship between turns of the first and second wires in the two-layer winding region and are parts in which the first and second wires cross each other. In the non-contact winding region, the first wire has a longer wire length than the second wire. The first wire has a longer coil length than the second wire through both regions.