摘要:
A core is divided by alternately arranging plural magnetic material portions and plural non-magnetic material portions in a circumferential direction of the core through which a primary conductor penetrates. A conductor is wound around the core under conditions in which each core cross section of the core intersects the magnetic material portion and the non-magnetic material portion, each core cross section including a cut end surface of each conductor of a secondary winding wound around the core, and a ratio of a magnetic material portion cross-sectional area of the magnetic material portion to a non-magnetic material portion cross-sectional area of the non-magnetic material portion at the core cross section is kept constant at each core cross section.
摘要:
A core is divided by alternately arranging plural magnetic material portions and plural non-magnetic material portions in a circumferential direction of the core through which a primary conductor penetrates. A conductor is wound around the core under conditions in which each core cross section of the core intersects the magnetic material portion and the non-magnetic material portion, each core cross section including a cut end surface of each conductor of a secondary winding wound around the core, and a ratio of a magnetic material portion cross-sectional area of the magnetic material portion to a non-magnetic material portion cross-sectional area of the non-magnetic material portion at the core cross section is kept constant at each core cross section.
摘要:
A battery control unit (400) controls charge and discharge of battery cells (100) on the basis of temperatures measured by a temperature measurement unit (320) and voltages measured by the voltage and current measurement unit (340). In addition, the battery control unit (400) specifies a lowest temperature cell having the lowest temperature and a highest temperature cell having the highest temperature on the basis of the temperatures measured by the temperature measurement unit (320), when a current is greater than 0. In addition, the battery control unit (400) performs balance control for equalizing voltages of all the battery cells (100), on the basis of the voltages measured by the voltage and current measurement unit (340), when a first temperature condition in which a temperature difference ΔT between the highest temperature cell and the lowest temperature cell is equal to or greater than a reference value T1 is not satisfied. On the other hand, when the temperature difference ΔT satisfies the first temperature condition, the battery control unit (400) does not perform the balance control.
摘要:
A gas-insulated electric device, by which a cross-sectional area of a central conductor can be reduced. The gas-insulated electric device includes an insulation tube that ranges to portions facing to ground potential portions for a central conductor and to upper-lower portions along the grounding potential portions, and is coaxially arranged along the central conductor in a state where a gap intervenes between the central conductor and the insulation tube; a conductive layer that is formed on an inner surface of an insulation tube and is electrically connected to the central conductor; and a ground layer that is formed on an inner surface or an outer surface of the insulation tube and is grounded; in which heat generated from the central conductor is radiated by convecting the insulation gas through the gap between the central conductor and insulation tube.
摘要:
A test enable signal Data_En is output from a data generator 11 in a tester 10 to a device under a test (DUT) 20. In the DUT 20, a first logic circuit 21 converts a signal pattern with an ordinary transfer rate, which has been stored on a register 28, into a high-transfer-rate signal pattern SpeedData_Tx with a high rate. And a transmitter 22 transmits the high-transfer-rate signal. During a test, the high-transfer-rate signal transmitted is received by, a receiver 23 with a switch 24 turned ON. Then, the high-transfer-rate signal received is output to a second logic circuit 26, which converts the high-transfer-rate signal into a low-transfer-rate signal Data_Rx with an ordinary rate. Finally, the low-transfer-rate signal is output to the tester 10 and compared to an expected value thereof by a comparator 12. In this manner, a semiconductor device operating at a high speed can be tested using a tester operating at a lower speed.
摘要:
A voltage control circuit for implementing, e.g., the CPS function in which a high-accuracy comparison is performed between a high external voltage and a reference voltage. A diode-connected transistor converts the external voltage to a voltage lower than the external voltage in conjunction with an external voltage dropping resistor. A comparator compares the converted voltage with a specified comparison voltage. The size of the transistor is determined such that the ratio of an increment of the converted voltage to an increment of the external voltage is sufficiently high in a comparison region in which the external voltage is close to the reference voltage. A clamping circuit clamps the converted voltage with a specified limit voltage such that the converted voltage does not exceed the withstand voltage of the circuit.
摘要:
A camera system including a camera body and a camera accessory attachable to the camera body, such as an interchangeable back lid, an interchangeable lens, a flash device and so on, is disclosed. In the system, a plurality of circuits provided in the plurality of camera accessories are controlled by a microcomputer provided in the camera body. Data is transmitted between the microcomputer and the circuits using a serial data bus and synchronizing clock line connected therebetween. The circuit to receive the data sent from the microcomputer, or the circuit which should send the data to the microcomputer are selected by the microcomputer through chip select lines provided between the microcomputer and each circuit.
摘要:
A seal means for use in the Stirling engine or the like, the seal means comprising: a cylinder including a piston reciprocating therein, and a buffer chamber located in one of the spaces produced at the both sides of the piston; a tank for storing the working fluid in the buffer chamber when the engine is at rest, the tank being located outside the cylinder; a means for introducing the working fluid in the tank into the buffer chamber under pressure when the engine is started; a crank shaft driven by means of the piston through a piston rod; a crankcase for accommodating the crank shaft; a plurality of packings for preventing the working fluid in the buffer chamber from entering the crankcase by flowing along the outer surface of the moving piston rod, the packings being arranged in contact with the outer surface of the piston rod; and a means for returning the working fluid leaked in the packings from the buffer chamber through the moving piston rod to the buffer chamber.
摘要:
A reproducer for reproducing a binary digital data signal from a signal received at a receiver side. A pulse train is detected from the received signal at a pulse detector. Each pulse in the pulse train sets a first D-type flip-flop, which is, in turn, cleared by a clear pulse produced by a second D-type flip-flop in response to a clock pulse just after the first D-type flip-flop is set. The output of the first D-type flip-flop is applied to a data input terminal of a third D-type flip-flop and is taken into the third D-type flip-flop by the same clock pulse. The clock pulse repetition frequency is synchronous with the binary digital data signal. Thus, the reproduced binary digital data signal is obtained on an output of the third D-type flip-flop.
摘要:
A circuit for obtaining a clock pulse synchronized to a data signal received at a receiving side, which has a plurality of clock pulses having a repetition frequency equal to that of a clock in a transmission side but being different from one another in phase. On reception of the first data bit of the received data signal, the timing of the first data bit is detected at a detection circuit in reference to the plurality of clock pulses. According to the detected timing, a selector circuit selects one of the plurality of clock pulses with a predetermined constant phase difference from the received data signal.The detection circuit comprises D-type flip-flops, and the selector circuit comprises AND gates.