Abstract: A current-limiting device is a current-limiting device that uses a superconductor to perform a current-limiting operation, the current-limiting device including: a superconducting current-limiting element including the superconductor; a capacitor; a reactor; and a bypass switch. The series capacitor is connected in series to the superconducting current-limiting element. The current-limiting reactor is further connected in series to a series circuit including the superconducting current-limiting element and the series capacitor. The thyristor switch is connected in parallel to the series circuit.

Abstract: A device is equipped with an electrical connector in the form of a receptacle that is subject to liquid intrusion. The device detects the insertion of a mating connector and optionally detects the presence of liquid in the receptacle by applying a low power, pulsed sense signal to a terminal pin of the receptacle while the terminal pin is decoupled from a circuit part to which the terminal pin is normally coupled and concurrently sensing a voltage coupled from the terminal pin and comparing the voltage to at least a predetermined lower voltage bound and optionally a predetermined upper voltage bound and based on the results of those comparison deduces the presence of a mating connector or optionally the presence of liquid in the receptacle.

Abstract: A current-limiting and power-flow control device according to the present invention includes a superconducting current-limiting element including a superconductor, a series capacitor, and a parallel circuit. The series capacitor is connected in series with the superconducting current-limiting element. The parallel circuit includes a reactor connected in parallel with a series circuit including the superconducting current-limiting element and the series capacitor. Accordingly, overcurrent at the time of occurrence of a fault causes transition of the superconductor of the superconducting current-limiting element to the normal conducting state, and thus causes autonomous current-limiting operation of the superconducting current-limiting element. Thus, application of an excessive load across the terminals of the series capacitor due to the aforementioned fault can surely be prevented.

Abstract: A device is equipped with an electrical connector in the form of a receptacle that is subject to liquid intrusion. The device detects the insertion of a mating connector and optionally detects the presence of liquid in the receptacle by applying a low power, pulsed sense signal to a terminal pin of the receptacle while the terminal pin is decoupled from a circuit part to which the terminal pin is normally coupled and concurrently sensing a voltage coupled from the terminal pin and comparing the voltage to at least a predetermined lower voltage bound and optionally a predetermined upper voltage bound and based on the results of those comparison deduces the presence of a mating connector or optionally the presence of liquid in the receptacle.

Abstract: A current-limiting and power-flow control device according to the present invention includes a superconducting current-limiting element including a superconductor, a series capacitor, and a parallel circuit. The series capacitor is connected in series with the superconducting current-limiting element. The parallel circuit includes a reactor connected in parallel with a series circuit including the superconducting current-limiting element and the series capacitor. Accordingly, overcurrent at the time of occurrence of a fault causes transition of the superconductor of the superconducting current-limiting element to the normal conducting state, and thus causes autonomous current-limiting operation of the superconducting current-limiting element. Thus, application of an excessive load across the terminals of the series capacitor due to the aforementioned fault can surely be prevented.

Abstract: A current-limiting device is a current-limiting device that uses a superconductor to perform a current-limiting operation, the current-limiting device including: a superconducting current-limiting element including the superconductor; a capacitor; a reactor; and a bypass switch. The series capacitor is connected in series to the superconducting current-limiting element. The current-limiting reactor is further connected in series to a series circuit including the superconducting current-limiting element and the series capacitor. The thyristor switch is connected in parallel to the series circuit.

Abstract: A portable electronic device including a battery, a direct current (DC) power source, a first device that consumes a first amount of power during operation, a second device that consumes a second amount of power during operation, the second amount of power being more than the first amount of power, a first switch provided in a charging path between the DC power source and the battery, a second switch provided in a path for supplying power from the battery to the second device, and a charging control circuit that controls charging the battery by connecting the first switch when external power is supplied via the DC power source, and control the second switch to be connected and the first switch to be disconnected when the second device is operated during the charging.

Abstract: A portable electronic device including a battery, a direct current (DC) power source, a first device that consumes a first amount of power during operation, a second device that consumes a second amount of power during operation, the second amount of power being more than the first amount of power, a first switch provided in a charging path between the DC power source and the battery, a second switch provided in a path for supplying power from the battery to the second device, and a charging control circuit that controls charging the battery by connecting the first switch when external power is supplied via the DC power source, and control the second switch to be connected and the first switch to be disconnected when the second device is operated during the charging.

Abstract: An exhaust-gas purifying apparatus includes a mantle, a support, and a catalytic layer. The support is disposed in the mantle, and is formed as at least one shape selected from the group consisting of cylinder shapes and corrugated shapes. The catalytic layer is loaded on at least one of the surfaces of the support. Moreover, the support includes at least two support elements disposed in the axial direction of the mantle, and the two support elements neighboring in the axial direction of the mantle are disposed out of phase with each other in the peripheral direction of the mantle. The exhaust-gas purifying apparatus shows not only an enhanced exhaust-gas purifying ability but also high misfire resistance.

Abstract: An exhaust-gas purifying apparatus includes an outer cylinder, a plurality of cylinder-shaped supports, and a catalytic layer. The cylinder-shaped supports are disposed in the outer cylinder, and have an outer peripheral surface and an inner peripheral surface. At least two of the neighboring cylinder-shaped supports contact with each other with the outer peripheral surfaces. The catalytic layer is loaded on at least one of the outer peripheral surface and inner peripheral surface of the cylinder-shaped supports. At least one of the cylinder-shaped supports has a ring-shaped cross-section with a cut-off, and is disposed in the outer cylinder in such an elastically deformed state that it expands in the centrifugal direction. Thus, the exhaust-gas purifying apparatus not only shows a high exhaust-gas purifying ability, but also is good in terms of the assemblage easiness. Moreover, the exhaust-gas purifying apparatus exhibits improved misfire resistance.

Abstract: An exhaust-gas purifying apparatus includes an outer cylinder, a plurality of cylinder-shaped supports, and a catalytic layer. The cylinder-shaped supports are disposed in the outer cylinder, and have an outer peripheral surface and an inner peripheral surface. At least two of the neighboring cylinder-shaped supports contact with each other with the outer peripheral surfaces. The catalytic layer is loaded on at least one of the outer peripheral surface and inner peripheral surface of the cylinder-shaped supports. At least one of the cylinder-shaped supports has a ring-shaped cross-section with a cut-off, and is disposed in the outer cylinder in such an elastically deformed state that it expands in the centrifugal direction. Thus, the exhaust-gas purifying apparatus not only shows a high exhaust-gas purifying ability, but also is good in terms of the assemblage easiness. Moreover, the exhaust-gas purifying apparatus exhibits improved misfire resistance.

Abstract: An exhaust-gas purifying apparatus includes a mantle, a support, and a catalytic layer. The support is disposed in the mantle, and is formed as at least one shape selected from the group consisting of cylinder shapes and corrugated shapes. The catalytic layer is loaded on at least one of the surfaces of the support. Moreover, the support includes at least two support elements disposed in the axial direction of the mantle, and the two support elements neighboring in the axial direction of the mantle are disposed out of phase with each other in the peripheral direction of the mantle. The exhaust-gas purifying apparatus shows not only an enhanced exhaust-gas purifying ability but also high misfire resistance.

Abstract: In a magnetic recording medium comprising on a non-magnetic substrate a magnetic layer obtained by dispersing ferromagnetic powder in an electron beam-curable resin followed by electron beam curing or a backcoat layer obtained by curing an electron beam-curable resin with electron beams, a combination of an electron beam-curable vinyl chloride resin having a sulfur-containing polar group and an electron beam-curable urethane resin having a phosphorus-containing polar group is used as the electron beam-curable resin. This results in improvements in dispersibility, surface smoothness, and electromagnetic characteristics, as well as a lowering of error rate in high density digital recording. Storage property is good.

Abstract: A magnetic layer of a magnetic recording medium comprising a magnetic powder dispersed in a binder resin contains a powder of Ti-containing Al.sub.2 O.sub.3. The magnetic recording medium may alterenatively incorporate the Ti-containing Al.sub.2 O.sub.3 powder in the back coating or in both the magnetic layer and the back coating. A superior running stability and a superior durability are attained.

Abstract: A magnetic recording medium whose magnetic layer formed on a base comprises a magnetic powder and a binder which contains a tertiary amine and uses 1,4-cyclohexanedimethanol as a chain extender. The magnetic powder is preferably of CrO.sub.2. The medium is made by mixing and dispersing the magnetic powder in a binder which consists of a reaction product of (A) a polyester which is a reaction product of a diol selected from among ethylene glycol, propylene glycol, 1,3-butanediol, 1,4-butanediol, 1,5-pentadiol, and 1,6-hexanediol, and adipic acid, (B) a chain extender consisting of 1,4-cyclohexanedimethanol, (C) an aliphatic or aromatic diisocyanate in an amount substantially equal to the combined molar amount of the polyester and the chain extender, and (D) a tertiary amine, and applying the resulting magnetic coating material to a base.

Abstract: A magnetic recording medium comprising a plastic base and a magnetic layer formed thereon by applying a dispersion of a ferromagnetic powder in a resin binder, the magnetic layer containing the ferromagnetic powder which has a BET specific surface area of at least 35 m.sup.2 /g and .alpha.-Al2O3 particles having a particle size not exceeding one half the mean particle diameter of the ferromagnetic powder and less than 0.1 .mu.m in diameter, the .alpha.-Al2O3 particles being added in an amount greater than 5% but less than 15% by weight on the basis of the weight of the ferromagnetic powder. The magnetic powder is a metallic magnetic powder containing iron as the major constituent. The .alpha.-Al2O3 particles are cube-shaped.

Abstract: In a magnetic recording medium wherein a magnetic coating composition comprising a binder and a magnetic powder is applied to the surface of a substrate, the dispersion of magnetic powder in binder is improved for enhanced physical and electromagnetic properties by using a vinyl chloride/hydroxyl group-containing vinyl monomer/polar group-containing monomer copolymer or a vinyl chloride/vinyl acetate/hydroxyl group-containing vinyl monomer/polar group-containing monomer copolymer having not been subjected to saponification, the polar group-containing monomer preferably containing an epoxy group as an additional polar group. Electromagnetic properties are further improved with a metal magnetic powder having a BET value of up to 60 m.sup.2 /g and a pH value of at least 7.

Abstract: A magnetic recording medium comprising a substrate and magnetic recording double-layers formed on the substrate, wherein the magnetic material of the magnetic recording under-layer is composed essentially of an alloy or metal magnetic powder having a specific surface area of at most 30 m.sup.2 /g as measured by BET method, and the magnetic material of the magnetic recording top-layer is composed essentially of an iron oxide or Co-adsorbed iron oxide powder having a specific surface area of at least 25 m.sup.2 /g as measured by BET method.