A method of producing a motor core includes preparing a soft magnetic plate containing a transition metal element, preparing a modifying member containing an alloy having a melting point lower than a melting point of the soft magnetic plate, bringing the modifying member into contact with a part of a plate surface of the soft magnetic plate, causing the modifying member to diffuse and penetrate into the soft magnetic plate from a contact surface between the soft magnetic plate and the modifying member and forming a hard magnetic phase-containing part in a part of the soft magnetic plate, and laminating a plurality of soft magnetic plates on each other after the modifying member is brought into contact with the part of the plate surface of the soft magnetic plate.

A coil component includes a first core having a leg portion, a second core joined to the first core with the leg portion therebetween, and a magnet disposed between the leg portion and the second core. Movement of the magnet in a first direction intersecting a direction in which the first core and the second core face each other is at least restricted by an uneven structure provided on a junction surface between the magnet and at least one of the first core and the second core.

Embodiments disclosed herein include electronic packages and methods of assembling such packages. In an embodiment, an electronic package comprises a core. In an embodiment the core comprises glass. In an embodiment, buildup layers are over the core, and a plug is embedded in the buildup layers. In an embodiment, the plug comprises a magnetic material. In an embodiment, an inductor wraps around the plug.

A novel transformer circuit employing multi-axis windings around a large magnetic billet receives and amplifies the energy from a flux of energetic waves emanating from the sun and other celestial bodies and entities throughout the environment. A clean source of solar energy can be harvested with an energy density that is at least 50 times greater than photon-based collectors.

A transformer includes a magnetic core, a first coupling terminal, a second coupling terminal, a first winding, and one or multiple second windings. The magnetic core includes two opposed base parts, and five leg parts including first to fifth leg parts disposed within opposed surfaces of the base parts and magnetically coupling the base parts. The second and third leg parts are disposed with the first leg part interposed therebetween in a first direction. The fourth and fifth leg parts are disposed with the first leg part interposed therebetween in a second direction. The first winding is, in a direction from the first coupling terminal to the second coupling terminal, wound around the first to third leg parts in a first winding direction, and around the fourth and fifth leg parts in a second winding direction. The second winding/windings is/are wound around the leg parts except the first leg part.

Provided are an attractor for PMA wireless charging type wireless power reception module and a manufacturing method thereof, and a wireless power reception module having the same. The attractor for PMA wireless charging type wireless power reception module according to an embodiment of the present invention comprises: a wireless power reception module; and a thin magnetic piece formed of a magnetic material having a saturation magnetic flux density of 0.5 tesla or more such that a change in the voltage value of a hall sensor of a certain value or more can be detected in both an aligned state when a wireless power transmission module is aligned and a non-aligned state when the wireless power reception module is not in line with the wireless power transmission module within a non-alignment region having a certain area including the aligned state.

The present invention provides an acoustic device including a frame, a vibration system and a magnetic circuit system. The vibration system includes a diaphragm, a voice coil, a voice coil holder connecting the diaphragm and the voice coil, and a support assembly connecting the frame and the voice coil holder. The voice coil holder comprises a first fixing portion extending toward a direction of the voice coil, a second fixing portion extending toward to the support assembly, and a first connecting portion connecting the first fixing portion and the second fixing portion. The first fixing portion is mounted to the voice coil, and the second fixing portion is mounted to the support assembly. The first connecting portion provides with a reinforcing rib protruding and extending from the first fixing portion.

A reluctance transducer includes a soft ferromagnetic yoke and a soft ferromagnetic core element, which is movable relative to the yoke. Two permanent magnets bear the core element. The permanent magnets are arranged relative to each other and to the yoke so that the reluctance transducer has a good linear relationship between displacement and force. The reluctance transducer can be applied as stiffness compensating element. The reluctance transducer can include an electrical winding to allow its application as a magnetic bearing, an actuator or as a displacement, velocity or acceleration sensor with improved intrinsic linearity.

The magnetic component comprises: a magnetic core comprising an E-shaped lower part, an E-shaped upper part and an I-shaped central part closing both the lower part and the upper part such that the lower part and the central part define two lower magnetic circuits and the upper part and the central part define two upper magnetic circuits; a first coil and a second coil wound around a central branch of the lower part to be coupled to one another; a third coil wound around a central branch of the upper part, the third coil being connected in series with the second coil. The central part has a reluctance lower than both that of the lower part along each lower magnetic circuit and that of the upper part along each upper magnetic circuit.

Presented herein are methods and apparatus for biasing magnetic circuits to reduce audible noise from a switching power supply. A magnetic component (e.g., a magnet) is constructed and provided to a core (e.g., a ferromagnetic core) to offset (i.e., bias) an applied magnetomotive force. By selecting and/or manufacturing the magnetic component based on a circuit operating condition, the offset may be tailored to advantageously shift a frequency of mechanical deformation outside the audible noise range. In a switching power supply with fixed peak current, the offset to the applied magnetomotive force may be determined, at least in part, by the fixed peak.