Abstract: A semiconductor device of an embodiment includes a semiconductor layer, a first insulating film provided on the semiconductor layer, a first electrode film provided on the first insulating film, a second electrode film provided on the first electrode film, and a first field plate electrode provided on the second electrode film. A lower end of the first field plate electrode is located on a second surface of the first electrode film, the second surface being in contact with the second electrode film, rather than a first surface of the first electrode film, the first surface being in contact with the first insulating film.

Abstract: A semiconductor device includes a nitride semiconductor element, a first diode, and a second diode; the nitride semiconductor element includes a conductive mounting bed, a semiconductor substrate formed on the mounting bed, a first nitride semiconductor layer, a second nitride semiconductor layer, a first major electrode, a second major electrode, a first gate electrode, and a second gate electrode; the first diode includes a first anode electrode electrically connected to the mounting bed, and a first cathode electrode electrically connected to the first major electrode; and the second diode includes a second anode electrode electrically connected to the mounting bed, and a second cathode electrode electrically connected to the second major electrode.

Abstract: A semiconductor device includes a first transistor, a first drive circuit including a second transistor, and a second drive circuit including a third transistor. The second transistor and the third transistor are connected in series; and a connection node of the second and third transistors is connected to a gate electrode of the first transistor. The first transistor, the second transistor, and the third transistor are normally-off MOS HEMTs formed in a first substrate that includes GaN. The first drive circuit charges a parasitic capacitance of the first transistor. The second drive circuit discharges the parasitic capacitance of the first transistor.

Abstract: A wind instrument includes a tube body; a tone hole tube that has an inner open end formed extending from the outer periphery of the tube body and opening to the inside of the tube body, and an outer open end opening to the outside of the tube body; and a finger pressing plate that, in the radial direction of the tone hole tube, extends from the outer open end of the tone hole tube to the outside of the tone hole tube.

Abstract: A wind instrument includes a tube body; a tone hole tube that has an inner open end formed extending from the outer periphery of the tube body and opening to the inside of the tube body, and an outer open end opening to the outside of the tube body; and a finger pressing plate that, in the radial direction of the tone hole tube, extends from the outer open end of the tone hole tube to the outside of the tone hole tube.

Abstract: An electrically powered vehicle is connected to an external power supply through a charge plug. A relay is interposed in an electrical path extending to a power storage device from a power feed node electrically connected to the external power supply through the charge plug. A control device operates with electric power from an auxiliary machinery power supply provided separately from the power storage device and controls opening and closing of the relay in correspondence with a period during which the power storage device is charged. None of electric power consuming components mounted on the electrically powered vehicle is connected to the power feed node. Therefore, even during a period in which the electrically powered vehicle is connected to the external power supply, all electric power consuming components can electrically be disconnected from the external power supply by turning off the relay.

Abstract: A load backup device includes an abnormality detection part which detects an abnormal operation of a processing part, and a backup driving part which drives a load based on an output from the abnormality detection part when the abnormality detection part detects the abnormal operation of the processing part.

Abstract: An electrically powered vehicle is connected to an external power supply through a charge plug. A relay is interposed in an electrical path extending to a power storage device from a power feed node electrically connected to the external power supply through the charge plug. A control device operates with electric power from an auxiliary machinery power supply provided separately from the power storage device and controls opening and closing of the relay in correspondence with a period during which the power storage device is charged. None of electric power consuming components mounted on the electrically powered vehicle is connected to the power feed node. Therefore, even during a period in which the electrically powered vehicle is connected to the external power supply, all electric power consuming components can electrically be disconnected from the external power supply by turning off the relay.

Abstract: In a serial communication system in which data is transmitted from a first unit to a second unit in synchronization with a clock signal, the mode of communication between the first and second units is switched between a first communication mode in which data is transmitted from the second unit to the first unit in synchronization with the clock signal, and a second communication mode in which a signal asynchronous to the clock signal is transmitted from the first unit to the second unit.

Abstract: A load backup device includes an abnormality detection part which detects an abnormal operation of a processing part, and a backup driving part which drives a load based on an output from the abnormality detection part when the abnormality detection part detects the abnormal operation of the processing part.

Abstract: In a serial communication system in which data is transmitted from a first unit to a second unit in synchronization with a clock signal, the mode of communication between the first and second units is switched between a first communication mode in which data is transmitted from the second unit to the first unit in synchronization with the clock signal, and a second communication mode in which a signal asynchronous to the clock signal is transmitted from the first unit to the second unit.

Abstract: A telecommunication system includes a plurality of information transmission lines of various length, through which information signals are transmitted, active filters coupled to the information transmission lines, and a switching network coupled with the lines through the active filters, for establishing various connections between the lines in response to subscriber connection requirements. The active filters are of the type whose gain can be controlled and the gain is controlled in response to the length of the line over which the signals are transmitted, whereby the transmission loss of the line is compensated.