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    • 4. 发明授权
    • Drive circuit for ultrasonic motor
    • 超声波电机驱动电路
    • US06265809B1
    • 2001-07-24
    • US09390323
    • 1999-09-07
    • Hiroaki FujiiRyuji YanoHitoshi FujitaKenji Kitazawa
    • Hiroaki FujiiRyuji YanoHitoshi FujitaKenji Kitazawa
    • H02N200
    • H02N2/147H02N2/142H02N2/163
    • A drive circuit for an ultrasonic motor includes a DC power source, a transformer for applying to the ultrasonic motor two phase high frequency voltage alternating currents having a predetermined phase difference for driving the ultrasonic motor, a switching device interposed between the DC power source and the transformer for allowing a direct current from the direct DC power source to flow to the transformer at a predetermined timing, and a CPU connected to the switching device for controlling the switching device at the predetermined timing. Thus, the alternating current having an optimum frequency can be reliably and easily obtained. The drive circuit may include a vibration attenuating device operated when the ultrasonic motor is stopped. As a result, vibration of a stator of the ultrasonic motor is gradually reduced.
    • 一种用于超声波电动机的驱动电路,包括直流电源,用于向超声波电机施加的变压器,具有用于驱动超声波电动机的预定相位差的两相高频电压交流电;插入在直流电源和 用于允许来自直流DC电源的直流电流在预定定时流到变压器的变压器,以及连接到开关装置的CPU,用于在预定定时控制开关装置。 因此,可以可靠且容易地获得具有最佳频率的交流电。 驱动电路可以包括当超声波马达停止时操作的振动衰减装置。 结果,超声波马达的定子的振动逐渐减小。
    • 8. 发明授权
    • Cassette type magnetic bubble memory device
    • 盒式磁记忆装置
    • US4498152A
    • 1985-02-05
    • US482154
    • 1983-04-05
    • Toshio FutamiShoji YoshimotoRyuji Yano
    • Toshio FutamiShoji YoshimotoRyuji Yano
    • G11C11/14G11C19/08H05K5/02
    • H05K5/026G11C19/085
    • In a cassette type magnetic bubble memory device comprising: a magnetic bubble memory device mounted to a base plate and having a magnetic bubble memory element, a pair of coils for generation of a rotating field for driving the element, and a pair of permanent magnet plates and yoke plates for applying a bias field to the element; and an electric signal connector section provided on one end of the base plate and adapted to be connected to a loader, an electrically conductive metal frame is provided which surrounds at least the connector section, and a resin sealing medium is provided which seals at least the magnetic bubble memory device continuously to the inner walls of said frame.
    • 一种盒式磁性气泡存储装置,包括:安装在基板上并具有磁性气泡存储元件的磁性气泡存储装置,用于产生用于驱动该元件的旋转场的一对线圈,以及一对永磁体板 以及用于向元件施加偏置场的轭板; 以及电信号连接器部,其设置在所述基板的一端并且适于连接到装载器,设置有至少围绕所述连接器部的导电金属框架,并且设置树脂密封介质,所述树脂密封介质至少密封 磁性气泡存储装置连续地连接到所述框架的内壁。