摘要:
There are included an electric light emission continuous control unit and a power absorbing unit, and the electric light emission continuous control unit is provided with one or a plurality of large power elements to be used as a control impedance, and the large power element is continuously controlled to light a flash lamp to a determined light emission quantity. The power absorbing unit is provided with one or a plurality of power absorbing elements, and an operation of the power absorbing element is selected in a switching unit, and thereby power consumption of the large power element is controlled within a determined range.
摘要:
[Object] A pseudo solar light generation apparatus using a switching system, capable of increasing electric power, measuring accurate I-V characteristic of a high-efficiency solar cell, and lengthening a time for maintaining an arc discharge of a lamp is provided.[Organization] Electric power is supplied from a charging power supply 12 connected to a commercial power supply 11 to an electric double layer capacitor and power control circuit 20 by a charge control of a control circuit 70, and a charge is performed. After the charge of the electric double layer capacitor and power control circuit 20 is finished, the control circuit 70 controls a switching type boosting power supply circuit 30 to store a predetermined voltage in a load smoothing capacitor 38, and lighting of a flash lamp 50 is performed.
摘要:
[Object] To provide a solar cell output characteristic evaluation apparatus and a method thereof capable of accurately measuring an open-circuit voltage Voc by applying a forward bias current with a minimum power consumption without requiring a bipolar power supply discharging a large current causing a cost increase.[Organization] A solar cell output characteristic evaluation apparatus measuring output characteristic of a solar cell, including: a solar cell; a voltmeter measuring a voltage of the solar cell; an ammeter measuring a current value flowing in the solar cell; a variable resistor part connected to the solar cell; a forward bias circuit connected to the solar cell; and a reverse bias circuit connected to the solar cell is provided.
摘要:
A controller of a DC brushless motor comprises a microcomputer. The microcomputer receives signals from three hall elements being disposed in association with the DC brushless motor and for detecting the rotating position of a rotor magnet of the DC brushless motor. On the basis of the position detecting signals, the data of the rotating number of the rotor magnet may be evaluated. When the number of the rotation thus evaluated is below the predetermined rotating number, the microcomputer stops the power supply to the DC brushless motor from a switching power source. In order to evaluate such data of rotating number, an internal interruption is started at every predetermined period in the microcomputer. The microcomputer determines at every internal interruption whether or not a counter which is reset at each rotation of the rotor magnet has overflowed, and the data of rotating number is evaluated on the basis of repetition times of the internal interruptions and periods required for such overflow.
摘要:
A split stator armature winding comprises a circumferentially split stator core having slots formed therein, a plurality of armature coils mounted in a single layer in the slots without bridging the splitting interface of the split stator, and a dummy coil of a closed circuit, the dummy coil being disposed so as to bridge the splitting interface of the split stator and to extend in the vicinity of the back portion of the coil ends of the armature coils close to the splitting interface of the split stator.
摘要:
An apparatus for scanning an original comprises an original table for receiving an original, the table having protrusions on its underside corresponding to a home position (HP), a starting position (SP), and a forward going position (FP), respectively, whereby microswitches are located for sensing the protrusions as the original table moves back and forth, for producing digital signals indicative of the original table being at one of the aforesaid positions at a given time.
摘要:
An electric fan comprises a rotary shaft supported on a mounting base plate. The rotary shaft is extended through a cylindrical stator and on a tip of the rotary shaft, the bottom of a cup-shaped rotor yoke as well as an impeller are secured. The stator is enclosed in the rotor yoke, on whose inner wall an anisotropic rotor magnet magnetized in the reverse polarity alternately in its circumferential direction is secured. The stator and the rotor form a DC brushless motor, whereby the impeller is rotated through the rotation of the rotor and the rotary shaft. In the proximity of the rotor magnet, there is provided a hall integrated circuit (IC), through which a rotating position of the rotor may be detected. On the basis of the rotating position signal from the hall IC, a microcomputer controls the current flowing period in such a manner that the current flowing through the stator coil will partly overlap between each phase. A separate microcomputer adjusts the voltage applied to the DC brushless motor and controls the wind velocity.
摘要:
An image forming apparatus includes a photosensitive member on which an electrostatic latent image is formed. The electrostatic latent image is developed by toner and the toner image thus developed is transferred on a copying paper. A stopper is provided in the path of the copying paper to a transferring station. A first paper path for manually feeding paper, and a second paper path is provided for automatically feeding paper. The first and second paths join each other at an upstream side of the stopper. Downstream of the junction of the two paths is formed a common path in which the stopper is disposed. In the common path at the upstream side of the stopper, there is arranged a sensor for sensing the presence of copying paper. In an automatic feeding mode, when a signal is not given from the sensor within a predetermined period of time after a paper feed roller is operated, the occurrence of a jam will be detected. In a manual feeding mode, when an output signal is provided from the sensor indicating that paper is present in the common path, a command for the copy start will be given.
摘要:
The present invention relates to an armature winding of a split stator having a slotted core divided by at least two circumferentially-spaced split lines to facilitate the disassembly and assembly of the split stator. The armature winding comprises armature coils in the slots of the stator core connected to provide poles and arranged to provide a plurality of armature coils divided at the split lines. Connecting and disconnecting means are provided to connect and disconnect the armature coils when the split stator is assembled and disassembled, respectively.