An inductor according to an embodiment of the present invention comprises: a first magnetic body having a toroidal shape, and including a ferrite; and a second magnetic body disposed on an outer circumferential surface or an inner circumferential surface of the first magnetic body, wherein the second magnetic body includes: resin material and a plurality of layers of metal ribbons wound along the circumferential direction of the first magnetic body, wherein the resin material comprises a first resin material disposed to cover an outer surface of the plurality of layers of metal ribbons, and a second resin material disposed in at least a part of a plurality of layers of interlayer spaces.

A magnetic core assembly includes a first core having at least one gap and at least one second core provided within the at least one gap of the first core. The first core and the at least one second core are made of different materials. The at least one second core occupies a space no larger than the at least one gap of the first core.

An inductor includes a wire including a conducting line, and an insulating film disposed on an entire circumferential surface of the conducting line, and a magnetic layer embedding the wire. The magnetic layer contains a magnetic particle. The magnetic layer includes a first layer in contact with the circumferential surface of the wire, a second layer in contact with the surface of the first layer, . . . and the n-th layer (n is a positive number of 3 or more) in contact with the surface of the (n−1)th layer. In the two layers adjacent to each other in the magnetic layer, the relative magnetic permeability of the layer closer to the wire is lower than the relative magnetic permeability of the layer farther from the wire.

An inductor includes a wire including a conducting line, and an insulating film disposed on an entire circumferential surface of the conducting line, and a magnetic layer embedding the wire. The magnetic layer contains a magnetic particle. The magnetic layer includes a first layer in contact with a first surface of an outer peripheral surface of the wire, and a second layer in contact with a second surface of the outer peripheral surface of the wire and the surface of the first layer. The relative magnetic permeability of the first layer is higher than the relative magnetic permeability of the second layer.

A planar magnetic structure includes a closed loop structure having a plurality of core segments divided into at least two sets. A coil is formed about one or more core segments. A first antiferromagnetic layer is formed on a first set of core segments, and a second antiferromagnetic layer is formed on a second set of core segments. The first and second antiferromagnetic layers include different blocking temperatures and have an easy axis pinning a magnetic moment in two different directions, wherein when current flows through the coil, the magnetic moments rotate to form a closed magnetic loop in the closed loop structure.

A chip electronic component includes a magnetic body including first magnetic metal particles, internal coil portions embedded within the magnetic body, and insulation resistance layers disposed on upper and lower surfaces of the magnetic body and including second magnetic metal particles having an oxide coating.

According to one configuration, an inductor device comprises core material and at least a first electrically conductive path. The core material is fabricated from magnetically permeable material. The first electrically conductive path extends axially through the core material from a proximal end of the inductor device to a distal end of the inductor device. The core material is operable to confine first magnetic flux generated from first current flowing through the first electrically conductive path. The inductor device further includes a gap in the core material. The gap (gas or solid material) has a different magnetic permeability than the core material. Inclusion of the gap in the core material provides a way to tune an inductance of the inductor device and increase a magnetic saturation level of the inductor device. The core material includes any number of electrically conductive paths and corresponding gaps.

According to certain embodiments, an electronic device comprises: a display configured to perform a scanning operation in a scanning operation frequency range; a battery; a wireless charging antenna configured to induce a current when proximate to wireless charging signal in a frequency range adjacent to the scanning operation frequency range, and wherein the induced current charges the battery; a first flexible printed circuit board disposed between the wireless charging antenna and the battery and connected to the display; a second flexible printed circuit board disposed in parallel with the first flexible printed circuit board; and at least one shielding sheet disposed between the wireless charging antenna and the first printed circuit board

An inductor component comprising a spiral wiring wound on a plane; a first magnetic layer and a second magnetic layer located at positions sandwiching the spiral wiring from both sides in a normal direction relative to the plane on which the spiral wiring is wound; a vertical wiring extending from the spiral wiring in the normal direction to pass through the first magnetic layer; and an external terminal disposed on a surface of the first magnetic layer to connect an end surface of the vertical wiring. The first magnetic layer has magnetic permeability lower than that of the second magnetic layer.

An inductive transducer apparatus for testing metallic objects using Pulsed Eddy Current topology. The Apparatus includes a transmitter coil, a receiver coil, and a hybrid core. The hybrid core has a high saturation point which allows the transducer to generate a strong initial magnetic field that may further induce strong eddy currents on the surface of the target capable of penetrating deep into metallic objects under inspection. The hybrid core also has a high permeability which enhances the transducer's sensitivity and allows to maintain high signal-to-noise-ratio and of the received signal associated with Eddy Current magnetic field decaying, thus enhancing the system's performance in environments where reliable quantitative analysis of flaws located deep underneath the surface of metal objects is required. A linearity compensation method may be applied to further enhance the performance of the system.