摘要:
A process for producing a circuit module including, carried out in this order, preparing a ceramic carrier substrate having ceramic substrate pads for mounting electronic parts, forming solder paste layers on the ceramic substrate pads, forming precoated solder layers by heating the ceramic carrier substrate having the solder paste layers on the ceramic substrate pads to melt the solder paste layers, and then cooling for solidifying the solder, preliminarily fixing stepped lid having protrusions adjacent to a cavity and dents adjacent to the cavity with the protrusions intervening therebetween to the precoated solder layers of the ceramic carrier substrate and joining the stepped lid to the ceramic carrier substrate with solder by placing the ceramic carrier substrate having the stepped lid preliminarily fixed to the precoated solder layers in a reflow furnace.
摘要:
A circuit module containing a ceramic carrier substrate to carry electronic parts, ceramic substrate pads provided on a surface of the ceramic carrier substrate, and a lid having a cavity and a bottom surface joined to the ceramic substrate pads with solder, the lid being a stepped lid having protrusions adjacent to the cavity, and dents adjacent to the cavity with the protrusions intervening therebetween, the protrusions being in contact with the ceramic carrier substrate with a prescribed distance to the ceramic substrate pads, and the dents being joined to the ceramic substrate pads with solder.
摘要:
A circuit module containing a ceramic carrier substrate to carry electronic parts, ceramic substrate pads provided on a surface of the ceramic carrier substrate, and a lid having a cavity and a bottom surface joined to the ceramic substrate pads with solder, the lid being a stepped lid having protrusions adjacent to the cavity, and dents adjacent to the cavity with the protrusions intervening therebetween, the protrusions being in contact with the ceramic carrier substrate with a prescribed distance to the ceramic substrate pads, and the dents being joined to the ceramic substrate pads with solder.
摘要:
A circuit module containing a ceramic carrier substrate to carry electronic parts, ceramic substrate pads provided on a surface of the ceramic carrier substrate, and a lid having a cavity and a bottom surface joined to the ceramic substrate pads with solder, the lid being a stepped lid having protrusions adjacent to the cavity, and dents adjacent to the cavity with the protrusions intervening therebetween, the protrusions being in contact with the ceramic carrier substrate with a prescribed distance to the ceramic substrate pads, and the dents being joined to the ceramic substrate pads with solder.
摘要:
An electronic component package includes a circuit board which has a mounting surface that does not show wettability for fluxless solder and on which a semiconductor element is mounted, a soldering pattern that shows wettability for the fluxless solder and is formed to surround an area on which the semiconductor element is mounted, a lid that has a shape such that a cavity is formed between the lid and the circuit board, a bonding surface to the soldering pattern is formed in a ring shape, and does not show wettability for the fluxless solder, a solder bonded part that is formed by heating a solder precoat formed of the fluxless solder on a bonding surface of the lid, and a ventilation hole that is formed by providing a bonding surface of the lid exposed in a discontinuous part of the solder precoat after the solder bonded part is formed.
摘要:
An electronic component package includes a circuit board which has a mounting surface that does not show wettability for fluxless solder and on which a semiconductor element is mounted, a soldering pattern that shows wettability for the fluxless solder and is formed to surround an area on which the semiconductor element is mounted, a lid that has a shape such that a cavity is formed between the lid and the circuit board, a bonding surface to the soldering pattern is formed in a ring shape, and does not show wettability for the fluxless solder, a solder bonded part that is formed by heating a solder precoat formed of the fluxless solder on a bonding surface of the lid, and a ventilation hole that is formed by providing a bonding surface of the lid exposed in a discontinuous part of the solder precoat after the solder bonded part is formed.
摘要:
A method for controlling a displacement in the thickness direction of the contraction-type gel actuator having an effect of contraction in the thickness direction by applying a voltage between an anode and a cathode between which a gel which includes a dielectric polymeric material is interposed, which includes performing feedback control of an applied voltage, with a sampled value of a displacement when the applied voltage acts on the contraction-type gel actuator, according to the following equation (1): E=kp(xd−x)+Ed (1) In the equation, xd represents a target displacement of the contraction-type gel actuator; Ed represents an applied voltage with respect to the target displacement xd obtained by the linear approximation of the applied voltage and the displacement from a measured result of the displacement in accordance with the applied voltage of the contraction-type gel actuator; and kp represents a proportional gain.
摘要翻译:通过在阳极和阴极之间施加电压来控制具有厚度方向收缩效果的收缩型凝胶致动器的厚度方向上的位移的方法,在该阳极和阴极之间插入包含电介质聚合物材料的凝胶, 根据以下等式(1),当所施加的电压作用在收缩型凝胶致动器时,执行施加的电压的反馈控制与位移的采样值:E = kp(xd-x)+ Ed )在等式中,xd表示收缩型凝胶致动器的目标位移; Ed表示相对于根据施加电压的线性近似获得的目标位移xd的施加电压和根据收缩型凝胶致动器的施加电压的位移的测量结果的位移; kp表示比例增益。
摘要:
An image forming apparatus includes a power supply unit supplying power to a plurality of components, the power supply unit including a first power mode and a second power mode, the second power mode supplying less power than the first power mode, a control unit controlling which power mode the power supply unit uses, an authentication unit performing a user authentication when power is supplied from the power supply unit in the second power mode and an authentication request received in the second power mode, and a sending unit sending a request signal requesting the control unit to shift the power supply unit to the first power mode when the authentication unit succeeds in the user authentication, wherein the control unit controls the power supply unit to shift from the second power mode to the first power mode upon receipt of the request signal.
摘要:
There is provided a catalyst for hydrotreating a hydrocarbon oil, which comprises an inorganic oxide support containing a certain amount of phosphorus oxide having provided thereon: at least one selected from metals in the Group 6 of the periodic table, at least one selected from metals in the Group 8 of the periodic table, and carbon, and which has a certain specific surface area, pore volume, and mean pore diameter, a process for producing the same, and a method for hydrotreating a hydrocarbon oil using the same.Thereby, the catalyst can be produced in a simple and convenient manner and sulfur compounds in the hydrocarbon oil can be exceedingly highly desulfurized and simultaneously nitrogen compounds can be diminished without necessitating severe operating conditions.
摘要:
A file is transferred directly between a parent magnetic-disk device and a child magnetic-disk device. In one embodiment, a parent magnetic-disk device has a host-mode execution program, whereas a child magnetic-disk device is capable operating in a device mode as is the case with an ordinary magnetic-disk device. The parent magnetic-disk device has an operating-mode-setting unit including a special-purpose jumper block. An MPU employed in the parent magnetic-disk device executes the host-mode execution program to put the parent magnetic-disk device in a host mode. At an activation time, the MPU refers to the logic of the special jumper block to start an operation in the host mode. The MPU controls the parent magnetic-disk device to directly transfer a file to the child magnetic-disk device. Thus, the file can be transferred between the parent and child magnetic-disk devices without intervention by a host computer.