摘要:
A semiconductor device that can suppress variation of GND potential of a control board and prevent malfunction of IC without restricting a mounting direction of the IC of the control board is provided. In a power module 10 as a semiconductor device in which an insulating board 31 having a power switching element 24 and a control board 22 having IC 50 for controlling the power switching element 24 are vertically provided in a case body 19, GND pins 61 are provided at both the sides of the IC 50, a GND pattern. 51 to which the GND pins 61 of the IC 50 are connected is provided in the control board 22, and a GND loop breaking slit 70 as a. breaking portion for breaking a GND loop formed by electrical connection of the IC 50, the GND pins 61 at both the sides of the IC 50 and the GND pattern 51 is provided to the GND pattern 51.
摘要:
A plate member for a housing has a wood part including a plurality of wood plates that are stacked, and a resin part adhered on the wood part and including a plurality of resin sheets that are stacked. Each of the plurality of resin sheets includes a plurality of pores.
摘要:
A proximity type antenna includes an antenna pattern for wirelessly communicating with an external communication device by magnetic coupling and a conductive plate arranged near the antenna pattern. The conductive plate has an aperture and a slit extending from the aperture to an end of the conductive plate and at least part of the aperture is arranged at a position of overlapping either the antenna pattern or the region surrounded by the inner periphery of the antenna pattern.
摘要:
A wire winding device which uses a large-sized supply bobbin, which has a large capacity and a large diameter, to highly precisely suppress a variation in tension which variation occurs when a coil is formed by winding a wire material at high speed with the wire material aligned with a winding frame. Rotation (the number of rotation, and timing) of the supply bobbin relative to rotation of the coil is controlled based on the difference between the amount of take-up of the wire material taken up on the winding frame side and the amount of pay-out of the wire material paid out from the supply bobbin, and the control is performed such that the amount of the take-up and the amount of the pay-out agree with each other every moment. This can highly precisely suppress a variation in tension even if there are large differences between inertia of and the diameters of the coil and the supply bobbin.
摘要:
A hemispherical Luneberg dielectric lens including a hemispherical center layer having a hemispherical outer surface, and a plurality of hemispherical dome-shaped layers each having concentric hemispherical inner and outer surfaces, the outer surfaces of the center layer and dome-shaped layers having different diameters and the inner surfaces of said dome-shaped layers having different diameters. The center layer and dome-shaped layers are successively concentrically fitted into one another and integrated into a hemispherical shape. The center layer is a foam molding of ceramic-containing thermoplastic resin expanded beads, while each of said dome-shaped layers is a foam molding of thermoplastic resin expanded beads containing 0 to 80% by weight of a ceramic. The ceramic content per unit volume of the center and dome-shaped layers decreases from the center layer to the outermost dome-shaped layer, and the standard deviation of the apparent density of each of the center and dome-shaped layers is 0.07 g/cm3 or lower.
摘要翻译:一种半球形Luneberg介质透镜,包括具有半球形外表面的半球形中心层和多个具有同心半球形内表面和外表面的半球形圆顶形层,中心层和圆顶形层的外表面具有不同的直径和 所述圆顶形的层的内表面具有不同的直径。 中心层和圆顶形的层被相继地同心地装配在一起并整合为半球形。 中心层是含有陶瓷的热塑性树脂发泡珠的发泡成型体,而每个所述圆顶形层是含有0至80重量%陶瓷的热塑性树脂发泡珠的发泡成型体。 中心层和圆顶形层的单位体积的陶瓷含量从中心层到最外面的圆顶状层减少,中心圆顶形层的表观密度的标准偏差为0.07g / cm 3 或更低。
摘要:
A disk array device comprises: a hard disk drive module including a disk for recording information thereon and having one side that has a length substantially equal to the diameter of the disk; a battery module; an operation module; a fan module having at least one cooling fan; a controller module having a controller; a power supply module provided for supplying power to the modules; a circuit board to which the above-mentioned modules are connected via electrical connectors; and a substantially box-shaped chassis in which the modules and the circuit board are housed. A front surface and a rear surface of the chassis are opened in a rectangular shape. A length of one side of the opened front surface of the chassis is substantially the same length as the one side of the hard disk drive module.
摘要:
A micro-electro-mechanical systems element array device in which plural micro-electro-mechanical systems elements each having a movable portion are arranged in an array, said movable portion being to be displaced by a physical force which is generated by applying an electric signal to a conductive portion, and each of said micro-electro-mechanical systems elements drives and displaces said movable portion of said micro-electro-mechanical systems element on the basis of a displacement data for said micro-electro-mechanical systems element, wherein said device comprises: an electric signal generating unit as defined herein; a switching unit as defined herein; and a selecting unit as defined herein.
摘要:
A hemispherical Luneberg dielectric lens including a hemispherical center layer having a hemispherical outer surface, and a plurality of hemispherical dome-shaped layers each having concentric hemispherical inner and outer surfaces, the outer surfaces of the center layer and dome-shaped layers having different diameters and the inner surfaces of said dome-shaped layers having different diameters. The center layer and dome-shaped layers are successively concentrically fitted into one another and integrated into a hemispherical shape. The center layer is a foam molding of ceramic-containing thermoplastic resin expanded beads, while each of said dome-shaped layers is a foam molding of thermoplastic resin expanded beads containing 0 to 80% by weight of a ceramic. The ceramic content per unit volume of the center and dome-shaped layers decreases from the center layer to the outermost dome-shaped layer, and the standard deviation of the apparent density of each of the center and dome-shaped layers is 0.07 g/cm3 or lower
摘要翻译:一种半球形Luneberg介质透镜,包括具有半球形外表面的半球形中心层和多个具有同心半球形内表面和外表面的半球形圆顶形层,中心层和圆顶形层的外表面具有不同的直径和 所述圆顶形的层的内表面具有不同的直径。 中心层和圆顶形的层被相继地同心地装配在一起并整合为半球形。 中心层是含有陶瓷的热塑性树脂发泡珠的发泡成型体,而每个所述圆顶形层是含有0至80重量%陶瓷的热塑性树脂发泡珠的发泡成型体。 中心层和圆顶形层的单位体积的陶瓷含量从中心层到最外面的圆顶状层减少,中心圆顶形层的表观密度的标准偏差为0.07g / cm 3 或更低
摘要:
A transition time is a time from a state where a movable portion has been rotationally displaced in the first direction and stopped to a state where driving portions apply the physical action forces to the movable portion to rotationally displace the movable portion in the second direction, which is different from the first direction, and the movable portion reaches a final displacement position. An elastic force value of the elastic supporting portion and the transition time have such a relationship that when the elastic force value of the elastic supporting portion is equal to a certain value, the transition time takes a local maximum value. The elastic force value of the elastic supporting portion is equal to or less than the certain value at which the transition time takes the local maximum value.