摘要:
A film easily soluble in cold water includes a water-soluble copolymer composed of 2 to 40 mol % of an allyl ester moiety, 97.5 to 50 mol % of a vinyl ester moiety and 0.5 to 10 mol % of at least one member selected from the group consisting of unsaturated monocarboxylic acid, unsaturated dicarboxylic acid and anhydrides thereof, and the copolymer has a degree of saponification of not less than 65 mol %. The film is easily soluble in cold water and such solubility in cold water is not lowered even if the film comes into contact with either alkaline or acidic materials and it can suitably used as wrapping material for packages which are directly thrown into water together with packed materials. The copolymer may be used of such an allyl ester, vinyl ester and further one of unsaturated carboxylic acids.
摘要:
A high strength Cu-Ni-Sn alloy, comprising 3-25% Ni, 3-9% Sn, 0.05-1.5% Mn, balance Cu, is heated to a temperature of 800.degree. C. or above in a single-phase region. This heat treatment is followed by quenching and subsequent heating at a temperature range of 600.degree.-770.degree. C. in a two-phase region, followed by quenching and a finishing process with a ratio of 0-60%. Thereafter, the processed alloy is subjected to a final heat-treatment at a temperature of 350.degree.-500.degree. C.
摘要:
A copper-based alloy for use in electrical and electronic devices, particularly as a material used for forming lead frames of semiconductor devices, which is less expensive than phosphor bronze while providing a mechanical strength and durability to repeated bending comparable with those of phosphor bronze, and also a relatively high conductivity. The inventive alloy is a copper-based alloy containing 1.2 to 2.5 wt % tin, 0.01 to 0.15 wt % phosphorous, 0.1 to 0.6 wt % nickel, 0.05 to 1 wt % zinc, and the remainder being copper and minute amounts of unavoidable impurities.
摘要:
A thermal printing head for printing alphanumeric characters on a thermally-responsive medium, the head being faced with a pattern of heat generating "dot" elements electrically insulated from one another and having conductive leads, with means for connecting the leads selectively to a source of electric current. The heat generating elements are formed of a film of boron phosphide. Preferably the leads are also formed of boron phosphide, integral with the elements, but "doped" to secure a high degree of conductivity. The printing head is formed by applying a boron phosphide compound on a substrate, covering the same with a passivation film, removing the passivation film to expose a background area of the compound film defining a central "island" of unexposed area, doping the exposed background area to increase the conductivity thereof, removing the passivation film from the island, and forming grooves in the compound film dividing the island into separate heat generating elements, with the grooves extended into the background area to form pairs of integral conductive leads for the elements.
摘要:
In a coordinate detection apparatus, a resistance-film is formed on a substrate made of an insulating material. A common electrode applies a voltage to the resistance-film, the common electrode extending along a plurality of a resistance-film removal areas formed by removing portions of the resistance-film. A voltage application part applies the voltage to the common electrode. The voltage is applied from the voltage application part to the resistance-film through the common electrode to generate a potential distribution in the resistance-film. A coordinate position of a contact position at which the resistance-film is contacted is detected by detecting a potential of the resistance-film at the contact position.
摘要:
Disclosed is a laminated inductor that has good direct current superimposition characteristics, does not cause a variation in temperature characteristics, suppresses the occurrence of delamination, and can be stably manufactured. Also disclosed are a method for manufacturing the laminated inductor and a laminated choke coil. A laminated inductor (10) for use as a choke coil in a power supply circuit includes a rectangular parallelepiped-shaped laminated chip (1) and at least one pair of external electrodes (8) that are provided at the end of the laminated chip (1) and are conductively connected to the end of a coil. The laminated chip (1) includes a plurality of magnetic material layers (3) formed of an Ni—Zn—Cu ferrite, a plurality of conductive layers (2), which are laminated through the magnetic material layers (3) to constitute a coil, and at least one nonmagnetic layer (4) formed of a Ti—Ni—Cu—Mn—Zr—Ag-base dielectric material and formed in contact with a plurality of the magnetic material layers (3).
摘要:
A gas insulated circuit breaker system has: a container that encapsulates insulating gas; a main contact in the container that opens/closes the main circuit; a resistor contact in the container, connected in parallel to the main contact, to be opened after elapse of a predetermined time after the main contact is opened and to be closed at a predetermined time before the main contact is closed; a resistor in the container, serially connected to the resistor contact and connected in parallel to the main contact together with the resistor contact; a temperature sensor that measures temperature of surrounding of the resistor; and a temperature estimation section that estimates a temperature of the resistor based on a timing of opening/closing operation of the main contact, a current flowing through the main circuit and the measured temperature.
摘要:
When generating a temporary ROM code file and a design information file, a host server generates a dedicated ROM compiler and an intermediate file associated with the dedicated ROM compiler. In a workstation, the dedicated ROM compiler is executed, whereby the contents of a design information file are changed to the contents corresponding to a correct ROM code. The dedicated ROM compiler is specifically designed to be capable of changing only a particular design parameter and the design information file associated with the temporary ROM code file.
摘要:
A multi layer inductor using an Ni—Zn—Cu ferrite, which has an improved temperature characteristic and is free from structural defects, is provided, and a method for manufacturing the multi layer inductor is also provided. The multi layer inductor is characterized by including a laminate 1 having a rectangular parallelepiped shape, which is provided with a plurality of magnetic layers 3,3 composed of an Ni—Zn—Cu ferrite, a plurality of conductor layers 2,2 forming a coil upon being laminated via the magnetic layers and at least one non-magnetic layer 4 formed so as to come into contact with the plurality of magnetic layers 3,3 and composed of a Ti—Ni—Cu—Mn—Zr-based dielectric substance; and at least a pair of external electrodes 7,7 provided on the ends of the laminate 1 and conductively connected to the ends of the coil.