The present disclosure relates to a spin wave switch and a filter based on a magnonic crystal. According to one embodiment, a magnonic crystal device may include a ferromagnetic layer and an antiferromagnetic planar periodic structure set on the ferromagnetic layer. The magnonic crystal device of the present disclosure may be used as a spin wave switch to effectively regulate and control the transmission coefficient of the spin wave, or may be used as a spin wave filter to filter the spin wave of a specific frequency.

The invention relates to an electrical filter element (1) for filtering alternating voltage interference. The electrical filter element (1) comprises two dielectric circuit board substrates (11, 12) having a magnetic core (13) arranged between the circuit board substrates. The magnetic core (13) has a material-free inner region (13a), in which electrical connection elements (21-24) are provided between the two dielectric circuit board substrates (11, 12). Furthermore, electrical connection elements (31, 32) can also be provided between the two dielectric circuit board substrates (11, 12) in an outer region of the magnetic core (13).

An LC composite component includes a magnetic substrate with magnetism, a magnetic layer with magnetism, inductors, capacitors, and core parts with magnetism. The magnetic substrate includes a first surface and a second surface on a side opposite to the first surface. The magnetic layer is disposed to face the first surface of the magnetic substrate. The inductors and the capacitors are disposed between the first surface of the magnetic substrate and the magnetic layer. The core parts are disposed between the first surface of the magnetic substrate and the magnetic layer and connected to the magnetic layer. The thickness of the core part is 1.0 or more times the thickness of the magnetic layer, the thickness of the magnetic substrate is 1.0 or more times the thickness of the magnetic layer.

A noise filter includes a plurality of stages of LC filters composed of a plurality of inductors and a plurality of capacitors. Each inductor has a bus bar, and a core member made from a magnetic body and having a tubular shape surrounding the bus bar. A power conversion device includes a power conversion main circuit, and the noise filter. The plurality of inductors are composed of: a specific bus bar, which is a first bus bar having a plate shape on a positive side and connecting an external power supply and the power conversion main circuit, or a second bus bar having a plate shape on a negative side and connecting the external power supply and the power conversion main circuit; and a plurality of core members surrounding the specific bus bar. The plurality of capacitors are provided between the first bus bar and the second bus bar.

A switching component configured to switch an electrical signal, the switching component includes a substrate bearing several elementary components each ensuring the switching of the electrical signal, a baseplate onto which the substrate is fixed, the baseplate being configured to discharge heat emitted in the switchings of the switching component, two electrical conductors each connected to one of the elementary components and respectively ensuring the input and the output of the elementary component concerned for the signal (I.sub.C) to be switched, a magnetic core produced in a ferromagnetic material, the magnetic core surrounding the elementary component concerned without surrounding others of the elementary components and being disposed in the component in such a way that a displacement current between the surrounded elementary component and the baseplate induces a magnetic induction in the magnetic core, and in such a way that the path followed by a conduction current of the electrical signal switched by the component does not form a turn around the magnetic core.

Provided is a power converter in which a magnetic core of a noise filter can be prevented from magnetic saturation and the noise filter can be downsized. A noise filter 140 provided in a power converter includes: a magnetic core 1 formed with a single through-hole 1A and forming a closed magnetic circuit; first wiring 11 having one end 81 connected to a power conversion circuit and the other end drawn out from the second opening 3, and running through the through-hole 1A from one first opening 2 to the other second opening 3; second wiring 21 having one end connected to the other end of the first wiring 11 and the other end 82 drawn out from the first opening 2 as a filter output end, and running through the through-hole 1A from the second opening 3 to the first opening 2; a first capacitor 41 provided between the ground and a connecting portion 31 of the first wiring 11 and the second wiring 21; and the second capacitor 51 provided between the other end 82 of the second wiring 21 and the ground.

A multilayer electronic component includes: a body including one or more ceramic layers or magnetic layers; an inductor part including coil portions disposed in the body to be perpendicular to a lower surface of the body; a plurality of internal electrodes disposed in the body to be perpendicular to the lower surface of the body; and an input terminal, an output terminal, and a ground terminal disposed on the lower surface of the body, wherein the body includes a capacitor part comprising at least one among the plurality of internal electrodes and at least one among the coil portions with at least one of the ceramic layers or magnetic layers interposed therebetween.

An electronic component includes a first outer electrode, a second outer electrode, a third outer electrode, and a fourth outer electrode which are provided to correspond to four corners of a second main surface; a fifth outer electrode which is provided on the second main surface; a multilayer body; a first inductor which includes a first end portion and a second end portion; and a first surface mounted electronic component which is mounted on the multilayer body and which includes a sixth outer electrode and a seventh outer electrode. The first end portion is electrically connected to the first outer electrode. The second end portion is electrically connected to the second outer electrode and the sixth outer electrode. The seventh outer electrode is electrically connected to the fifth outer electrode.

Electronic parts for improving an isolation distance are provided. The electronic part includes: at least one plate; and first and second terminals each connected to the plate, wherein the electronic part is mounted in a PCB through the first and second terminals and a creepage distance between the first terminal and the second terminal is greater than a clearance distance between the first terminal and the second terminal.

A power supply converter and a method for manufacturing the same are provided. The power supply converter includes an inductance component and a power component, wherein the inductance component includes: a first magnetic substrate, provided with a first via, the first magnetic substrate including a first surface and a second surface, and a first pin being provided on the first surface; a second magnetic substrate, provided with a second via, and having a second surface provided with a second pin; an inductance coil, provided between the first surface and the second surface and having a first end and a second end formed at the vias and connected to the first and second pin, respectively; and a filling part, at least partly filling the vias, wherein the power component and the inductance component are stacked, are in contact and are coupled to each other.