摘要:
A light-emitting diode includes: a semiconductor substrate; and a layered structure, made of an AlGaInP type compound semiconductor material and provided on the semiconductor substrate. The layered structure includes: a light-emitting structure composed of a pair of cladding layers and an active layer for emitting light provided between the pair of cladding layers; and a current diffusion layer which is lattice-mismatched with the light-emitting structure. A lattice mismatch Δa/a of the current diffusion layer with respect to the light-emitting structure defined by the following expression is −1% or smaller: Δa/a=(ad−ae)/ae where ad is a lattice constant of the current diffusion layer, and ae is a lattice constant of the light-emitting structure.
摘要翻译:发光二极管包括:半导体衬底; 以及由AlGaInP型化合物半导体材料制成并设置在半导体基板上的分层结构。 层状结构包括:由一对包覆层和用于发射设置在该对包覆层之间的光的有源层构成的发光结构; 以及与发光结构晶格失配的电流扩散层。 相对于由下式表示的发光结构的电流扩散层的晶格失配Deltaa / a为-1%以下:<?in-line-formula description =“In-line Formulas”end =“lead “?”>Δa/ a =(a-d e e e))<<<<---------“ 线公式“end =”tail“?>其中a是电流扩散层的晶格常数,并且λ是发光结构的晶格常数 。
摘要:
To provide a self-diagnosing apparatus for a refrigerator which self-diagnoses an operation condition and advises a user of an appropriate improvement action if there is an abnormal. First, a detector such as an internal temperature sensor detects a plurality of condition-indicative quantities with respect to the refrigerator, and the condition-indicative quantities are stored in a memory part for a predetermined period. A diagnostic device such as a diagnosis calculation value judging part compares the condition-indicative quantities or a diagnosis calculation value which is calculated based on the condition-indicative quantities with a predetermined threshold value, and judges whether the operation condition of the refrigerator is normal or abnormal based on a result of the comparison. At this stage, if the condition-indicative quantities covering the predetermined past period which are stored in the memory are used as the condition-indicative quantities for the diagnosis, it is possible to accurately diagnose without influence of a condition-indicative quantity which suddenly appears. When it is judged that there is an abnormal condition as a result of the diagnosis, an improvement action which is preliminary determined for the abnormal condition is selected. The selected action is displayed visually or as a sound by an outputting device such as a sound emitter. Where a re-diagnosis is executed after a predetermined time since the abovementioned diagnosis and the outputting device output the improvement action based on a result of the re-diagnosis, it is possible to diagnose with an enhanced reliability.
摘要:
Turbostratic boron nitride (t-BN) powder having excellent sinterability. A mixture of boric acid anhydride and urea is charged in a reaction vessel together with alkali-borate, heated step by step in the vessel in an nonoxidizing gas atmosphere of one atmospheric pressure or above, and kept at a temperature from 850° C. to 950° C. to yield an intermediate product formal substantially of an amorphous boron nitride powder (first reaction step). Then the intermediate product is heated and kept at a temperature from 1200° C. to 1400° C. to crystallize crystalline t-BN, and the product is purified by washing with water and aqueous solution to obtain pure crystalline t-BN powder.
摘要:
An electric apparatus such as an inverter includes a cooler unit including a cooler, and a semiconductor component and an electrical component disposed on two opposite sides of the cooler respectively, and a housing for supporting the cooler unit. The cooler unit is pivotally supported on the housing so as to be taken into and out of the housing. The cooler unit is caused to pivot so as to be taken out of the housing when the semiconductor component is to be replaced.
摘要:
A coating protective film which comprises a substrate, which is made of a colored polyolefin film and has a maximum per cent transmission of ultraviolet within a wavelength range of 190 to 370 nm of not more than 10%, and a pressure sensitive adhesive layer, which is made of a pressure sensitive adhesive containing as the main component at least one of polyisobutylene, butyl rubber and polybutene, satisfies the requirements for weatherability of protective pressure sensitive adhesive film which is temporarily attached to finished automobiles for the purposes of protection of automotive coating during transfer and storage, and is also so excellent in peelability as not to pollute the coating on the automobiles.
摘要:
A method for manufacturing hydrogen storage alloy particles comprises steps of obtaining a melt of the hydrogen storage alloy and pulverizing the hydrogen storage alloy by water atomizing process, whereby the melt is pulverized by contacting or colliding with high-speed jetting thereto to be dispersed in the form of solidified fine particles. By employing an aqueous solution of hypophosphorous acid or an alkali aqueous solution in place of water during the water atomizing process, or by etching the oxide films once formed on the surface of the hydrogen storage alloy particles with an aqueous solution of a strong acid, the thickness of the oxide film can be made thinner, and thus a high discharge capacity of a battery configured with a negative electrode comprising the alloy particles can be realized.
摘要:
The sealed lead acid battery comprises a positive and/or negative electrode made of an active material added with porous polymer particles having an average pore diameter of 0.05 to 10 .mu.m and a particle size of 0.1 to 0.8 mm. The additive amount of the porous polymer particles ranges from 0.2 to 3 wt. %. The active material may be incorporated with porous particles of 0.3 to 5 wt. % previously impregnated therein with sulfric acid. The resultant sealed lead acid battery has a high energy density and is superior in a high efficient discharge characteristic, a cycle life characteristic and a low temperature characteristic.
摘要:
In a traction control device in which an initial control torque of an engine is determined in accordance with an acceleration of the vehicle, when an excessive slipping of driven wheels is detected, a time taken for proceeding of the excessive slipping of the driven wheels from a large slip state to a small slip state is counted by a timer. If such time is smaller than a reference time and a gear ratio of the vehicle is of a first gear shift to provide a low vehicle speed, it is decided that the vehicle is traveling on an upward sloping road, and a lower limit value for defining the initial control torque of the engine determined in an initial control torque calculating means is corrected into an increased value in an initial torque correcting means. This prevents the initial control torque of the engine from being excessively reduced at the start of a traction control. By this construction, it is possible to prevent an initial control torque from being excessively reduced due to a misjudgment of a friction coefficient of a surface of an upward or downward sloping road to insure an acceleratability of a vehicle.
摘要:
A high-frequency choke circuit comprises a dielectric layer covered with grounding conductors, a lead line of high-impedance and at least one capacitance land formed within the dielectric layer, and at least one through-hole connecting the lead line and the capacitance land. The capacitance lands are disposed closer to the grounding conductors, resulting in large capacitances with small areas. The capacitance lands are formed on a layer distant from the layer on which the lead line is formed. Therefore, unnecessary electromagnetic coupling with other circuits formed on the same layer as the lead line can be reduced. The grounding conductors cover both surfaces of the dielectric layers that incorporate the capacitance lands and the lead line to thereby shield the circuit formed in the dielectric layers electromagnetically from outside.
摘要:
A hyper-resolution optical device which can focus a beam of light to a diameter less than the diffraction limit. The optical device has an optical system disposed on a transmissive substrate. One component in the optical system is a hyper-resolution optical component which passes or reflects light and which has a central portion which does not pass or reflect light, respectively. The hyper-resolution optical component can be integrated with the transmissive substrate. Such optical devices are particularly suitable for optical pick-up devices, laser printers, sensors.