Abstract: A motor vehicle has a motor, an inverter, a first power storage device, with a large-capacity characteristic, a second power storage device, with a high-power characteristic, a power converter and a circuit. The power converter has a voltage step down function during power driving. In the circuit, the power converter is connected to the first power storage device and the second power storage device. Thus, the first power storage device and the second power storage device are parallel to each other. During the power driving of the motor, the power converter steps down an output voltage of the first power storage device to supply energy from the first power storage device and the second power storage device to the inverter.

Abstract: A motor vehicle has a motor performing power driving and regeneration. The motor includes an inverter, a first power storage device suppling energy to the motor, a power converter and a circuit. The converter has a voltage step down function during the power driving and a voltage step up function during the regeneration. The power converter, with the voltage step down function during the power driving, is connected in the circuit to the first power storage device. During the power driving of the motor, the power converter steps down an output voltage of the first power storage device to supply the energy from the first power storage device to the inverter. During the regeneration in the motor, the power converter steps up a DC voltage of the inverter to recover regenerated energy into the first power storage device.

Abstract: A motor vehicle has a motor performing power driving and regeneration. The motor has an inverter, a first power storage device with a large-capacity characteristic, a second power storage device with a high-power characteristic, a power converter and a circuit. The power converter has a voltage step down function during the power driving and a voltage step up function during the regeneration. In the circuit, the power converter, with the voltage step down function during the power driving, is connected to the first power storage device and the second power storage device is connected in series between a reactor of the power converter and the inverter. During the power driving of the motor, an output voltage of the first power storage device is stepped down to supply energy from the first power storage device and the second power storage device to the inverter.

Abstract: [Problem] To provide a single-direction insulative DC-DC power converter using a single-direction switch circuit capable of realizing soft switching even with a simple circuit configuration and a method for controlling the DC-DC power converter. [Solution] A power converter comprising a primary circuit and a secondary circuit connected via a high-frequency transformer, wherein a circuit having a switching element is provided to the primary circuit, the secondary circuit has, connected in parallel, a DC capacitor and a diode rectifying circuit including four diodes U+, U?, V+, and V? each having a resonance capacitor Cr connected in parallel, and a resonance circuit formed by the resonance capacitor Cr and a leakage inductance L of a the high-frequency transformer is formed in the secondary circuit.

Abstract: A motor vehicle has a motor performing power driving and regeneration. The motor includes an inverter, a first power storage device suppling energy to the motor, a power converter and a circuit. The converter has a voltage step down function during the power driving and a voltage step up function during the regeneration. The power converter, with the voltage step down function during the power driving, is connected in the circuit to the first power storage device. During the power driving of the motor, the power converter steps down an output voltage of the first power storage device to supply the energy from the first power storage device to the inverter. During the regeneration in the motor, the power converter steps up a DC voltage of the inverter to recover regenerated energy into the first power storage device.

Abstract: A motor vehicle has a motor performing power driving and regeneration. The motor has an inverter, a first power storage device with a large-capacity characteristic, a second power storage device with a high-power characteristic, a power converter and a circuit. The power converter has a voltage step down function during the power driving and a voltage step up function during the regeneration. In the circuit, the power converter, with the voltage step down function during the power driving, is connected to the first power storage device and the second power storage device is connected in series between a reactor of the power converter and the inverter. During the power driving of the motor, an output voltage of the first power storage device is stepped down to supply energy from the first power storage device and the second power storage device to the inverter.

Abstract: A motor vehicle has a motor, an inverter, a first power storage device, with a large-capacity characteristic, a second power storage device, with a high-power characteristic, a power converter and a circuit. The power converter has a voltage step down function during power driving. In the circuit, the power converter is connected to the first power storage device and the second power storage device. Thus, the first power storage device and the second power storage device are parallel to each other. During the power driving of the motor, the power converter steps down an output voltage of the first power storage device to supply energy from the first power storage device and the second power storage device to the inverter.

Abstract: A motor performing power driving and regeneration has an inverter, a mechanical brake, a power storage device supplying energy to the motor, an accelerator operator controlling the motor to adjust a drive torque of a driving wheel, a mechanical brake operator controlling the mechanical brake to adjust a braking torque, a regenerative brake operator adjusting a braking torque of the driving wheel and recovering the energy into the power storage device, and a detector detecting a rotation speed of the motor. When the rotation speed of the motor is equal to or higher than a predetermined value, a predetermined braking torque, based on an operation amount of the regenerative brake operator, is generated by regenerative braking.

Abstract: To provide a mouth guard composition which hardly generates plastic deformation and which is high in fluidity during the formation after heating and softening and superior in fitness, and which even after repeated use of a mouth guard prepared therefrom, is free from sticking with respect to its surface and does not cause an offensive smell. The mouth guard composition is constituted of 39˜98% by weight of a styrene block copolymer; 1˜60% by weight of at least one thermoplastic resin selected from the group consisting of an alicyclic saturated hydrocarbon-based resin, a terpene resin, and an aliphatic petroleum resin; and 1˜40% by weight of at least one wax selected from the group consisting of a mineral wax, a synthetic wax, a vegetable-based wax, and an animal-based wax.

Abstract: To provide a mouth guard-preparing sheet from which a mouth guard to be used for preventing teeth and their surrounding tissues from a trauma occurred mainly in sports and having a uniform thickness between the right and left sides thereof can be prepared, without causing a problem in the thickness of an anterior teeth portion becoming thin in the preparation of a custom-made mouth guard by heat-sucking. The mouth guard-preparing sheet is made of a thermoplastic resin having a plane shape substantially coincident with a shape of a fixed frame of a heat-sucking type mouth preparation device and provided with a mouth guard portion from a site to be contacted with a labial surface side of a gingiva of an anterior teeth portion to a molar portion side and an elongation tab portion in an exterior direction of a mouth guard portion, wherein said mouth guard portion has a thickness of 1.5˜10 mm; said elongation tab portion has a thickness of 0.1˜0.

Abstract: To provide a root canal filling material remover that can remove a root canal filling material such as a gutta-percha point which is liable to remain in a root apex portion, or a sealer for root canal filling which is liable to enter into a dental pulp of a root canal wall and remain therein, after being removed during the re-treatment of a root canal, in a simple operation, without need of an excessive root canal enlargement operation as has been seen before, the root canal filling material remover contains at least one member selected from limonene, eucalyptus oil, chloroform and xylene, and a surfactant. Further, a polishing material may be added to the root canal filling remover.

Abstract: To provide a root canal filling material, which is high in strength, is hardly bent, is easy for root canal filling operation, is properly deformed during press contact, is high in adhesion and superior in sealing properties between root canal filling material each other or between a root canal filling material and a root canal wall, and is provided with proper radiopacity, the root canal filling material is constructed of (A) 1 to 50% by weight of one or two or more thermoplastic resins selected from trans-polyisoprene, polyethylene, polypropylene, and a copolymer of polyethylene and polypropylene; (B) 0.1 to 20% by weight of a styrene block copolymer; (C) 0.1 to 10% by weight of a paraffin wax; and (D) 30 to 95% by weight of one or two or more inorganic fillers selected from zinc oxide, barium sulfate, zirconium oxide, and titanium oxide.

Abstract: To provide a mouth guard composition which hardly generates plastic deformation and which is high in fluidity during the formation after heating and softening and superior in fitness, and which even after repeated use of a mouth guard prepared therefrom, is free from sticking with respect to its surface and does not cause an offensive smell. The mouth guard composition is constituted of 39˜98% by weight of a styrene block copolymer; 1˜60% by weight of at least one thermoplastic resin selected from the group consisting of an alicyclic saturated hydrocarbon-based resin, a terpene resin, and an aliphatic petroleum resin; and 1˜40% by weight of at least one wax selected from the group consisting of a mineral wax, a synthetic wax, a vegetable-based wax, and an animal-based wax.

Abstract: To provide a mouth guard-preparing sheet from which a mouth guard to be used for preventing teeth and their surrounding tissues from a trauma occurred mainly in sports and having a uniform thickness between the right and left sides thereof can be prepared, without causing a problem in the thickness of an anterior teeth portion becoming thin in the preparation of a custom-made mouth guard by heat-sucking. The mouth guard-preparing sheet is made of a thermoplastic resin having a plane shape substantially coincident with a shape of a fixed frame of a heat-sucking type mouth preparation device and provided with a mouth guard portion from a site to be contacted with a labial surface side of a gingiva of an anterior teeth portion to a molar portion side and an elongation tab portion in an exterior direction of a mouth guard portion, wherein said mouth guard portion has a thickness of 1.5˜10 mm; said elongation tab portion has a thickness of 0.1˜0.

Abstract: To provide a root canal filling material remover that can remove a root canal filling material such as a gutta-percha point which is liable to remain in a root apex portion, or a sealer for root canal filling which is liable to enter into a dental pulp of a root canal wall and remain therein, after being removed during the re-treatment of a root canal, in a simple operation, without need of an excessive root canal enlargement operation as has been seen before, the root canal filling material remover contains at least one member selected from limonene, eucalyptus oil, chloroform and xylene, and a surfactant. Further, a polishing material may be added to the root canal filling remover.

Abstract: To provide a root canal filling material, which is high in strength, is hardly bent, is easy for root canal filling operation, is properly deformed during press contact, is high in adhesion and superior in sealing properties between root canal filling material each other or between a root canal filling material and a root canal wall, and is provided with proper radiopacity, the root canal filling material is constructed of (A) 1 to 50% by weight of one or two or more thermoplastic resins selected from trans-polyisoprene, polyethylene, polypropylene, and a copolymer of polyethylene and polypropylene; (B) 0.1 to 20% by weight of a styrene block copolymer; (C) 0.1 to 10% by weight of a paraffin wax; and (D) 30 to 95% by weight of one or two or more inorganic fillers selected from zinc oxide, barium sulfate, zirconium oxide, and titanium oxide.

Abstract: Switching elements in an inverter main circuit are responsive to switching control signals. Phase voltages are applied to a polyphase load via the switching elements. Basic voltage command values are generated for phases of the polyphase load respectively. The basic voltage command values are converted into final voltage command values respectively. During a time interval for which at least two of the basic voltage command values are approximately equal to each other, the final voltage command values corresponding to the two of the basic voltage command values are equal to one of a maximum and a minimum. A carrier wave is subjected to pulse-width modulation responsive to the final voltage command values to produce the switching control signals. The produced switching control signals are outputted to the switching elements in the inverter main circuit.

Abstract: Switching elements in an inverter main circuit are responsive to switching control signals. Phase voltages are applied to a polyphase load via the switching elements. Basic voltage command values are generated for phases of the polyphase load respectively. The basic voltage command values are converted into final voltage command values respectively. During a time interval for which at least two of the basic voltage command values are approximately equal to each other, the final voltage command values corresponding to the two of the basic voltage command values are equal to one of a maximum and a minimum. A carrier wave is subjected to pulse-width modulation responsive to the final voltage command values to produce the switching control signals. The produced switching control signals are outputted to the switching elements in the inverter main circuit.

Abstract: A switching power source having a digital control system is provided. The switching power source includes a switching circuit 40 for switching an input power, an output circuit 50 for converting the switching output into a DC output, and a digital control 70. The digital control 70 is adapted to receive an output voltage analog signal AS1 and an output current analog signal AS2, and to convert the signals AS1 and AS2 into digital signals. It further functions to calculate, based on the digital signals, a command value for determining at least one of the switching frequency and the on or off time of the main switch 42. The operation of the main switch 42 is controlled in accordance with the command value. Information on power source input voltage or load terminal voltage is obtained through an assumption based on the signals AS1 and AS2.

Abstract: A switching power source having a digital control system is provided. The switching power source includes a switching circuit 40 for switching an input power, an output circuit 50 for converting the switching output into a DC output, and a digital control 70. The digital control 70 is adapted to receive an output voltage analog signal AS1 and an output current analog signal AS2, and to convert the signals AS1 and AS2 into digital signals. It further functions to calculate, based on the digital signals, a command value for determining at least one of the switching frequency and the on or off time of the main switch 42. The operation of the main switch 42 is controlled in accordance with the command value. Information on power source input voltage or load terminal voltage is obtained through an assumption based on the signals AS1 and AS2.