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61results about How to "Shorten wiring distance" patented technology

Electroplating solution, method for manufacturing multilayer printed circuit board using the same solution, and multilayer printed circuit board

The objective of present invention is to provide an electroplating solution capable of forming the upper face of a via-hole and the upper face of a conductor circuit in the same layer in approximately the same plane at the time of manufacturing a multilayer printed circuit board. The electroplating solution of the present invention is characterized by containing 50 to 300 g / L of copper sulfate, 30 to 200 g / L of sulfuric acid, 25 to 90 mg / L of chlorine ion, and 1 to 1000 mg / L of an additive comprising at least a levelling agent and a brightener.
Owner:IBIDEN CO LTD

Inverter device and drive unit using the same

The invention provides an inverter device and a drive unit using the same. In two systems of three-phase alternating-current inverter devices that drive a motor, power elements on power supply sides of bridge circuits are mounted on unit bases to constitute upper arm units. Power elements on ground sides of the bridge circuits are mounted on unit bases to constitute lower arm units. The upper arm units and the lower arm units are arranged separately on upper surfaces and outside surfaces of heat dissipation blocks of a heat sink. Heats generated by the power elements do not interfere with each other and are emitted to the heat sink, whereby heat dissipation performance of the power elements constituting the bridge circuits is improved.
Owner:DENSO CORP

Variable frequency air conditioner circuit board and variable frequency air conditioner

The invention provides a variable frequency air conditioner circuit board and a variable frequency air conditioner. A PCB of the variable frequency air conditioner circuit board is provided with a bridge rectifier, filter capacitors, a first IPM, an MCU, a first block terminal, a second IPM and a second block terminal connected with the second IPM module. The first IPM and the second IPM are arranged close to the two side edges of the PCB correspondingly. The MCU is arranged between the first IPM and the second IPM. Furthermore, the second IPM and the first block terminal are arranged close tothe same side edge of the PCB. The first block terminal is arranged close to the connecting side edge of the two side edges. The second block terminal is arranged between the first block terminal andthe second IPM. Devices on the circuit board can be made compact in layout while the circuit board is driven by a DC motor adopting two driving modes, and the wiring distance is short. Accordingly, the area of the PCB of the whole circuit board is reduced, and the cost of the circuit board is reduced.
Owner:GD MIDEA AIR-CONDITIONING EQUIP CO LTD

Flexible gathering topology, suitable for DC distribution network, of photovoltaic system and control method of topology

The invention discloses a flexible gathering topology, suitable for a DC distribution network, of a photovoltaic system and a control method of the topology. The flexible gathering topology comprisesphotovoltaic power generation fields, each photovoltaic power generation field comprises photovoltaic arrays, output of each photovoltaic array is connected with the input end of one H bridge module,the output ends of all H bridge modules in one photovoltaic power generation field are connected in series to an AC bus, the AC bus is connected to a bridge arm middle point of a modularized cascadedmulti-level converter (MMC), the output end of the MMC is connected to the DC distribution network, and the output ends of all photovoltaic power generation fields are connected in parallel. The large-scale or ultra-large-scale photovoltaic power generation field structure is analyzed and optimized from the aspect of the whole structure of the photovoltaic power generation field system and aimed at the developing trend towards DC of the distribution network, so that the total operation efficacy of the photovoltaic system is improved.
Owner:XI AN JIAOTONG UNIV

Inductor module, silicon tuner module and semiconductor device

Disclosed herein is an inductor module including a substrate functioning as a printed wiring board or an interposer; an IC mounting part formed on a surface of the substrate; an inductor which is formed in the substrate at such a position as to overlap with the IC mounting part on a plan-view basis and which is connected to an IC mounted on the IC mounting part; and a magnetic body including a magnetic material selected from among a NiZn ferrite, a NiZnCu ferrite and a Ba ferrite, the magnetic body being disposed intermediately between the IC mounting part and the inductor.
Owner:SONY CORP

High-isolation triple-coaxial leaky coaxial cable

ActiveCN106340703AImprove isolationEffectively isolate electromagnetic interferenceWaveguidesLeaky-waveguide antennasInsulation layerElectrical conductor
The invention provides a high-isolation triple-coaxial leaky coaxial cable. The isolating performance of the cable is excellent and the original main radiation signal is enhanced, so that the same-row wiring distance between leaky cables can be shortened substantially; and thus leaky cables can be distributed in a limited space area, so that the area meets the signal coverage requirement. The provided leaky coaxial cable comprises an inner conductor, an inner insulation layer, an inner-layer outer conductor, an outer insulation layer and a sheath successively from the center to the outer ring surface and is characterized in that a gap notch is formed in the inner-layer outer conductor and the gap radian alpha formed by the gap notch is 0 to 0.5 pi, wherein the gap radian alpha decreases with increasing of an optimal operating frequency; and an outer-layer outer conductor is arranged at an outer ring position corresponding to the gap notch, wherein the outer-layer outer conductor is a piece of arc metal. The corresponding center axes of the outer-layer outer conductor, the inner-layer outer conductor, and the inner conductor are overlapped. The outer-layer outer conductor is arranged at the outer side of the inner-layer outer conductor; and the arc radian beta of the outer-layer outer conductor is larger than the gap radian alpha.
Owner:JIANGSU HENGXIN TECH CO LTD

Detecting apparatus and device manufacturing method

A detecting apparatus for detecting a fine geometry on a surface of a sample, wherein an irradiation beam is irradiated against the sample placed in a different environment different from an atmosphere and a secondary radiation emanated from the sample is detected by a sensor, and wherein the sensor is disposed at an inside of the different environment, a processing device to process detection signals from the sensor is disposed at an outside of the different environment, and a transmission means transmits detection signals from the sensor to the processing device.
Owner:KIOXIA CORP
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