摘要:
In a semiconductor chip module, a transmission optical waveguide device to be mounted in the proximity of the side face of a semiconductor chip on a circuit board includes an input optical waveguide to which light from an external light source is inputted, an output optical waveguide provided at a position displaced in a vertical direction to the surface of the circuit board in a mounted state on the circuit with respect to the input optical waveguide for outputting an optical signal to a different device, an optical path changeover structure for guiding light guided through the input optical waveguide to the output optical waveguide, and an optical modulator provided on the input optical waveguide or the output optical waveguide for modulating light from the external light source based on an electric signal from the semiconductor chip.
摘要:
A power supply controller including a MOSFET between a power source and a load, a ground terminal, a gate driving circuit structured to control a gate potential of the MOSFET to turn on power and control the gate potential of the MOSFET to turn off power based on a ground terminal potential, and a turn-off circuit structured to switch the MOSFET into a turn-off state regardless of control by the gate driving circuit when the ground terminal potential is at a higher value than a source potential of the MOSFET.
摘要:
A method and device for safety protection of a secondary battery capable of preventing smoking and ignition thereof. A lithium cell 1 as a chargeable and dischargeable secondary battery, a protection circuit 11 for shutting down charging power Pc at the time of overcurrent, overvoltage, etc., and an electric power restriction circuit 20 for limiting the charging power Pc input to the lithium cell 1 are incorporated into a battery pack 10. A battery charger 12, equipped with a stabilized electric source 13 and a charging circuit 14, inputting the charging power Pc to the lithium cell 1, is connected to a previous stage of the battery pack 10. The electric power restriction circuit 20 limits the charging power Pc within a boundary value Pmax of a safety operation region for safely using the lithium cell 1, thereby permitting the lithium cell 1 to operate safely under any conditions.
摘要:
A paper cutter capable of cutting a paper with a width of a margin of the paper adjusted arbitrarily, wherein a fixed blade is provided at an end of a paper mounting base, a guide rail is disposed on a rear face side of the fixed blade, a slider is disposed slidably on the guide rail, a rotary blade holder having a rotary circular blade and an arm are attached to a mobile member, the arm disposed striding over the fixed blade, a paper pressing plate pressing portion for pressing a paper pressing plate disposed such that it is capable of approaching/leaving the fixed blade is attached to the arm, and a scale for adjusting the width of the margin to be formed on a periphery of a cutting object paper is formed in the paper pressing plate in parallel to a cutting line.
摘要:
A ceramics particle produced by a flame fusion method, wherein the ceramics particle contains MgO and SiO2 as main components, and has a MgO/SiO2 weight ratio of from 0.1 to 10, and an average particle size of from 0.001 to 1.5 mm; a spherical molding sand produced by a flame fusion method, wherein the spherical molding sand contains MgO and SiO2 as main components, and has a MgO/SiO2 weight ratio of from 0.1 to 10, and an average particle size of from 0.001 to 1.5 mm; a spherical molding sand, wherein the spherical molding sand comprises MgO and SiO2 as main components, and has a MgO/SiO2 weight ratio of from 0.1 to 10, an average particle size of from 0.001 to 1.5 mm, and a spherical degree of 0.95 or more; a process for producing the above spherical molding sand; a casting mold containing the spherical molding sand as defined above; and a casting produced by casting with the mold as defined above.
摘要:
A prescribed number of bars are arranged in a percussion instrument such as a xylophone and marimba, wherein each bar is formed by a base layer, a fiber reinforced plastic layer, and a surface layer that are combined together using an epoxy adhesive therebetween. Both the base layer and surface layer is made of the prescribed hardwood material such as rosewood, hard birch, padauk, and Chinese quince, while the fiber reinforced plastic layer is formed by laminating one or more fiber reinforced plastic sheets, each of which is formed by impregnating and hardening thermosetting epoxy resin with fibers. All fibers can be aligned in a single direction slanted to the longitudinal direction of the bar. Alternatively, fibers are woven in two directions rectangularly crossing each other in a cloth form. Thus, it is possible to improve bars in striking durability as well as in sound quality and design.
摘要:
The binder composition for the production of molds of the present invention comprises a binder obtained by polycondensation of polycondensable components comprising as major components furfuryl alcohol, urea, and an aldehyde. In the binder contained in the binder composition for the production of molds, the difference �A-B! between the weight % of charged furfuryl alcohol (A) based on the weight of the binder and the weight % of unreacted furfuryl alcohol (B) based on the weight of the binder is 5.0 to 60.0. When the binder composition for the production of molds of the present invention is used, the curing of the binder is further accelerated without deteriorating the working atmosphere.
摘要:
A new nitro compound of the formula: ##STR1## wherein R.sup.1 and R.sup.2 are each lower alkyl or lower alkoxy(lower)-alkyl, or ##STR2## is cyclized to form ##STR3## X is --O--, --S-- or --NH--, m is an integer 0 or 1, and R.sup.3 is carbamoyl, lower alkylcarbamoyl, lower alkanoyl, di-lower alkylaminosulfonyl, lower alkylsulfonyl, oxamoyl or a group of the formula: --(Y).sub.n --R.sup.4 wherein Y is --CO--, --SO.sub.2 --, --COCH.sub.2 -- or ##STR4## n is an integer of 0 or 1, and R.sup.4 is heterocyclic group which is optionally substituted with one or more substituents selected from lower alkyl, lower alkoxy, phenyl, carbamoyl, halogen, amino, lower alkylthio, hydroxy, lower alkylsulfonylamino and carbamoylmethyl, and pharmaceutically acceptable salt thereof, which are useful as vasodilators.
摘要:
A hologram of a virtual object or an object which actually exists is formed and a solid image is displayed. 3-dimensional information of the object to be displayed is divided into regions in the depth direction. Depth images are formed as 2-dimensional images where are seen from a plurality of points which are obtained by finely dividing the hologram forming surface for every region. A phase distribution at the hologram forming surface is calculated from the depth images and displayed on a liquid crystal display or the like as an electronic hologram. A reference light is irradiated onto the display and is converted into an optical wave front, thereby displaying a solid image. When forming a hologram recording medium, a zone image corresponding to each of the finely divided exposure regions of a dry plate is exposed multiple times.
摘要:
A spatial light modulating apparatus to display a steroscopic image constructed by a light source section, a mirror section, and a light deflecting section. The device structures are two-dimensionally arranged on a substrate surface. The light source sections are 2-dimensionally arranged on the apparatus substrate at a predetermined period interval (P) and modulate a light intensity by an external signal, thereby displaying an image. The reflecting surfaces of the mirror sections are periodically arranged in correspondence to the light source sections. The mirror sections change the direction of each of the reflecting surfaces by an external signal, thereby angle modulating the incident light. Further, the light deflecting sections are arranged in the upper portion in the light emitting direction from the plurality of light source sections and allow the lights emitted from the light source sections to enter the corresponding mirror sections.