An electromagnetic wave shielding filter is configured in a magnetic field transmission scheme, not in a low pass filter or band pass filter scheme, and thus allows a desired signal to pass, while maintaining unintended electromagnetic waves shielded.

The present embodiment relates to an electromagnetic wave shielding filter for high-frequency communication, having a structure in which an elliptical ferrite magnetic core is formed inside the filter, a primary coil and a secondary coil are installed at both ends of the magnetic core, and then a shielding and penetration unit is formed of a shielding material on the elliptical magnetic field core, so that a signal from the primary coil is transmitted in the form of a magnetic field to the secondary coil, and the other unintended common-mode components are eliminated.

An electronic device is disclosed. The electronic device discloses a plurality of wireless charging antennas, a plurality of shielding partition layers, at least some of the plurality of shielding partition layers disposed between the plurality of wireless charging antennas, a plurality of external device-receiving grooves formed through spaces defined between pairs of the shielding partition layers, and a processor electrically coupled to the plurality of wireless charging antennas. The processor is configured to: determine whether at least one external device is inserted into at least one of the plurality of external device-receiving grooves, and when the at least one external device is inserted into the at least one of the plurality of external device-receiving grooves, wirelessly transmit power through at least one wireless charging antenna corresponding to the at least one of the plurality of external device-receiving grooves into which the at least one external device is inserted.

An induction charging device for an electrically operated motor vehicle may include at least one charging assembly. The at least one charging assembly may include a charging coil, a ferrite assembly, a metal shielding plate, and a temperature-control assembly through which a fluid is flowable. The charging coil may be inductively couplable to a primary coil such that a motor vehicle battery is inductively chargeable. The ferrite assembly may include a plurality of rotatable ferrite plates arranged next to one another. When in a closed position, a respective ferrite plate may be arranged parallel to the charging coil and may shield the metal shielding plate from the charging coil. When in an open position, the respective ferrite plate may be arranged at an angle relative to the charging coil and may partially shield the metal shielding plate from the charging coil.

A choke is used to carry out high-voltage tests. The choke includes: a housing; a coil arranged in an interior of the housing; at least one electrically conductive component arranged between the coil and the housing; and a flux guide configured to guide a magnetic flux that is configured to be generated by the coil. The flux guide includes a ferromagnetic material; and is arranged between the coil and the at least one electrically conductive component in such a way that the magnetic flux that is configured to be generated by the coil is guided past the electrically conductive component.

The present disclosure relates to transformers. Various embodiments of the teachings herein may include a coating of an insulation body of a dry transformer. For example, the electrical winding may include multiple windings of a winding conductor wound to form a coil. The coil has been embedded into a solid insulation body. In some embodiments, a coating of an electrically conductive material, comprising a resin matrix and microscale filler, has been applied to at least one surface of the insulation body.

Neutron shielding. The neutron shielding comprises a plurality of absorption layers (201, 203), and at least one moderating layer (202). The plurality of absorption layers each comprise tungsten boride or tungsten carbide. The at least one moderating layer comprises a metal hydride. Each moderating layer is between at least two absorption layers.

A high voltage direct current energy transmission (HVDCT) air-core inductor includes at least one concentric winding layer having electric terminals are formed at its ends, and includes an electrostatic shield that has a layer of electrostatically dissipative material having a surface resistance ranging from 109 to 1014 ohm/square, wherein at least one end of the layer is provided with a collector electrode that extends essentially along the circumference of the end of the layer and that is to be connected to one of the terminals, and where the layer is designed as a spray coating on an outer surface of an exterior winding layer.

A power amplifier module includes a first substrate and a second substrate, at least part of the second substrate being disposed in a region overlapping the first substrate. The second substrate includes a first amplifier circuit and a second amplifier circuit. The first substrate includes a first transformer including a primary winding having a first end and a second end and a secondary winding having a first end and a second end; a second transformer including a primary winding having a first end and a second end and a secondary winding having a first end and a second end; and multiple first conductors disposed in a row between the first transformer and the second transformer, each of the multiple first conductors extending from the wiring layer on a first main surface to the wiring layer on a second main surface of the substrate.

A wireless electrical energy transmission system is provided. The system comprises a wireless transmission base configured to wirelessly transmit electrical energy or data via near field magnetic coupling to a receiving antenna configured within an electronic device. The wireless electrical energy transmission system is configured with at least one transmitting antenna and a transmitting electrical circuit positioned within the transmission base. The transmission base is configured so that at least one electronic device can be wirelessly electrically charged or powered by positioning the at least one device external and adjacent to the transmission base.

The present disclosure provides a power module and a solid-state transformer system. The power module includes: a circuit module, having a voltage level; and a cabin, configured to wrap the circuit module by bending or splicing, where the cabin has a shielding structure, the shielding structure including: a first conductor layer, located at a side close to the circuit module and equipotentially connected to the circuit module; a second conductor layer, arranged apart from the first conductor layer and located at a side away from the circuit module; and a solid insulating layer, provided between the first conductor layer and the second conductor layer for electrically isolating the first conductor layer and the second conductor layer. The power module provided by the present disclosure has good insulation performance and is easy to assemble.