Abstract: A planar transformer may include a primary printed circuit board (PCB) having at least a hole in which a first core and a second core are inserted and including a coil pattern, a secondary PCB having at least a hole in which the first core and the second core are inserted and including a coil pattern, and a heat dissipation plate disposed between the primary PCB and the secondary PCB and including at least a hole in which the first core and the second core are inserted.

Abstract: A car having: two front wheels; two rear wheels; a bottom wall, which delimits a lower surface, which faces a road surface and, in use, is brushed by an air flow flowing under the car; an internal combustion engine; and an exhaust system, which is coupled to the internal combustion engine and is provided with an exhaust duct, which originates from the internal combustion engine and has an end chamber, which ends with an outlet opening, through which exhaust gases are released into the atmosphere. The end chamber of the exhaust duct has at least one movable partition, which can be moved to different positions so as to change the width of the outlet opening. The movable partition delimits a lower surface of the end chamber, which faces the road surface and, in use, is brushed by the air flow flowing under the car.

Abstract: Systems and methods for superconducting magnets are disclosed, such systems and methods comprising a primary coil and short-circuited secondary coil. The secondary coil can be made from a stack of superconducting tapes having longitudinal cuts forming closed superconductor loops without splices. The primary coil is used to pump the current into the secondary coil where it circulates continuously generating a permanent magnetic field.

Abstract: A multi-coil inductor includes a plurality of stacked inductor units. Each of the inductor units comprises: a magnetic core in which a magnetic path is formed; and a plurality of coils which are wound around the magnetic core to form at least one winding pair. Wherein a part of the magnetic path between the adjacent inductor units is shared. In the present invention, the leakage inductance is controlled and the may be magnetic saturation of magnetic core avoided by adjusting series and parallel connections among the coils.

Abstract: An inductor includes a first magnetic body having a toroidal shape and having a ferrite; and a second magnetic body configured to be different from the first magnetic body and including a metal ribbon, wherein the second magnetic body includes an outer magnetic body disposed on an outer circumferential surface of the first magnetic body and an inner magnetic body disposed on an inner circumferential surface of the first magnetic body, and each of the outer magnetic body and inner magnetic body is wound in a plurality of layers in a circumferential direction of the first magnetic body.

Abstract: An energy storage system can include a battery, a power converter comprising a first plurality of switching devices coupled to the battery and a second plurality of switching devices coupled between the first plurality of switching devices and an AC power system, and control circuitry that determines whether the AC power system is a single/split phase system or a three phase system and operates the first and second pluralities of switching devices accordingly. The control circuitry can include a microcontroller and a plurality of voltage sensors each configured to monitor a magnitude and a phase of a voltage to allow the control circuitry to determine whether the AC power system is a single/split phase system or a three phase system and whether the AC power system is connected with a line to line or line to neutral fault condition.

Abstract: A contactor includes: at least one moveable contact mounted on a contact carrier; at least one stationary contact mounted on a housing; an electromagnet arranged to cause the contact carrier to move relative to the housing between a first position and a second position, and thus to cause the at least one moveable contact to travel from a contacts open position to a contacts closed position with respect to the at least one stationary contact; a sensor coupled to one of the contact carrier and the housing and arranged to detect an intermediate position, in between the first position and the second position, at which the housing and the contact carrier are located at a given moment in time as the contact carrier moves relative to the housing between the first position and the second position; and a controller connected to receive the signals from the sensor.

Abstract: A method for producing an alveolar soundproofing structure in which a portion of a membrane of a diaphragm including an acoustic outlet is inserted into a hole of a perforated membrane which covers a cell of the alveolar structure, and the diaphragm is pressed into the cell with the perforated membrane becoming deformed and is fixed at that location. It also relates to the alveolar structure. Such a method enables different types of diaphragms to be inserted into different configurations of cells and enables the diaphragm to be fixed therein, in accordance with the sound frequencies to be processed.

Abstract: A planar winding transformer includes a magnetic core set and a multilayer circuit board. The magnetic core set includes two magnetic cores and two magnetic columns. The two magnetic cores are parallel to each other. The multilayer circuit board is disposed between two magnetic cores, and two magnetic columns penetrate through the multilayer circuit board. The multilayer circuit board includes two low voltage winding layers and one high voltage winding layer. Two low voltage winding layers are connected to each other in parallel, and the high voltage winding layer is disposed between two low voltage winding layers. When the high voltage winding layer receives a polarity current, at least one of the low voltage winding layers generates a corresponding induced current. Two magnetic cores and two magnetic columns form a closed path for magnetic flux.

Abstract: A transducer of the preferred embodiment including a transducer and a plurality of adjacent, tapered cantilevered beams. Each of the beams define a beam base, a beam tip, and a beam body disposed between the beam base and the beam tip. The beams are arranged such that each of the beam tips extends toward a common area. Each beam is joined to the substrate along the beam base and is free from the substrate along the beam body. A preferred method of manufacturing a transducer can include: depositing alternating layers of piezoelectric and electrode onto the substrate in block, processing the deposited layers to define cantilever geometry in block, depositing metal traces in block, and releasing the cantilevered beams from the substrate in block.

Abstract: A layer system especially for forming SAW devices thereon is proposed comprising a monocrystalline sapphire substrate having a first surface and a crystalline piezoelectric layer comprising MN, deposited onto the first surface, and having a second surface. As a first surface a crystallographic R-plane of sapphire is used enabling an orientation of c-axis of the piezoelectric layer parallel to the first and second surfaces.

Abstract: In an inductor component, an inductor wire is in an element body and extends on a virtual flat plane passing inside the element body. A wire main body of the inductor wire has an oblong rectangular shape elongated in a length direction in the top view, and thus, a wire width perpendicular to the extending direction is constant. From each edge of the wire main body in a width direction, protrusions having an oblong rectangular shape in the top view protrude and extend, from a center of the wire main body in the extending direction of the wire main body, in a direction perpendicular to the extending direction, on both sides in the width direction of the wire main body, with the extending direction sandwiched between the protrusions. An area ratio of a protrusion area of the protrusions to an area of the wire main body is within 7.2%.

Abstract: A common-mode choke coil includes a multilayer body, and first and second coils incorporated in the multilayer body. The multilayer body is a cuboid shape including plural stacked non-conductor layers. The first coil includes a first coil conductor. The second coil includes a second coil conductor. With the common-mode choke coil, in a frequency region greater than or equal to 0.1 GHz and less than or equal to 100 GHz (i.e., from 0.1 GHz to 100 GHz), the Sdd21 transmission characteristic is less than or equal to ?3 dB at or above 30 GHz, and in a frequency region greater than or equal to 10 GHz and less than or equal to 60 GHz (i.e., from 10 GHz to 60 GHz), the Scc21 transmission characteristic is minimum at or above 20 GHz, and the Scc21 transmission characteristic has a minimum value of less than or equal to ?20 dB.

Abstract: A magnetic base body in one embodiment of the invention includes first metal magnetic particles having a first average particle size, and second metal magnetic particles having a second average particle size smaller than the first average particle size. In the embodiment, a first insulating layer having a first thickness is provided on surfaces of the first metal magnetic particles, and a second insulating layer having a second thickness smaller than the first thickness is provided on surfaces of the second metal magnetic particles.

Abstract: A reactor including a coil and a magnetic core, the magnetic core including a first inner core portion, a second inner core portion, a first outer core portion, and a second outer core portion. The reactor includes an inner resin portion and an outer resin portion, and the first outer core portion includes a first inner face that faces the coil, a first outer face on the opposite side to the first inner face, and an outward protruding portion protruding from the first outer face. When viewed from the first outer face side, the outer circumferential contour line of the outward protruding portion is located inside the outer circumferential contour line of the first outer face, and the end face of the outward protruding portion is exposed from the outer resin portion and is flush with the surface of the outer resin portion.

Abstract: An inductive device may be provided, including a first winding layer, a second winding layer arranged over the first winding layer and connected to the first winding layer to form a plurality of turns around a first axis, and a magnetic core arranged vertically between the first winding layer and the second winding layer. The magnetic core may include a portion entirely over the first winding layer and entirely under the second winding layer, where this portion may include a magnetic segment and a non-magnetic segment arranged laterally adjacent to each other along the first axis.

Abstract: A piezoelectric ceramic containing no lead as a constituent element is provided. Coefficient of variation C.V. of grain size of grains contained in the piezoelectric ceramic is 35% or less, and an image quality (IQ) image obtained by analyzing a cross section of the piezoelectric ceramic by an electron backscatter diffraction (EBSD) method shows that at least one of the grains has a grain size of 3 ?m to 5 ?m and an area ratio of a domain in said at least one of the grains is 85% or more.

Abstract: A coil component includes a body; first and second coil portions spaced apart from each other in the body; first and second external electrodes disposed on the body to be spaced apart from each other and connected to both ends of the first coil portion; and first and second ground electrodes spaced apart from each other on the body and connected to both ends of the second coil portion.

Abstract: A relay coil assembly includes a bobbin having flanges on two ends, an enameled wire wound around bobbin, a coil pin mounted to the flange and having an insertion portion, an enameled wire fixing portion and a signal wire fixing portion, and a signal wire. The signal wire fixing portion is provided with a first engagement recess with an opening facing downward, in which the signal wire is engaged. An inverted hook is provided at one of two recess sidewalls of the first engagement recess, and a slope section is provided at one of the two recess sidewalls of the first engagement recess. The opening gradually enlarges from inside to outside along the slope section, which is capable of squeezing the signal wire into the first engagement recess and the inverted hook is capable of preventing the signal wire from coming out.

Abstract: A recreational vehicle and an air conditioner therefor are provided. The air conditioner includes an indoor cover defining an indoor portion and an outdoor portion with an outdoor heat exchanger and an outdoor fan disposed in the outdoor portion and an indoor heat exchanger and an indoor fan disposed in the indoor portion. The air conditioner also includes an indoor panel defining an air inlet and an air outlet. An acoustic insert includes a solid top wall and at least one permeable side wall. The acoustic insert is positioned between the indoor panel and the indoor fan, whereby the acoustic insert dampens sound transmitted through the indoor panel.