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169 条记录 (耗时 0.032 秒)

    Highly purified acetonitrile and process for purifying crude acetonitrile
    52.
    发明授权
    Highly purified acetonitrile and process for purifying crude acetonitrile 失效
    高纯度乙腈和粗制乙腈纯化方法

    公开(公告)号：US5629443A

    公开(公告)日：1997-05-13

    申请号：US371180

    申请日：1995-01-11

    申请人： Shigeo Nakamura ,  Shigeru Kurihara ,  Minoru Saitoh ,  Hideo Midorikawa

    发明人： Shigeo Nakamura ,  Shigeru Kurihara ,  Minoru Saitoh ,  Hideo Midorikawa

    IPC分类号： C07C253/34

    CPC分类号： C07C253/34

    摘要： A process for purifying crude acetonitrile comprising: (1) a step of contacting crude acetonitrile with nascent oxygen, (2) a step of contacting the acetonitrile from step (1) with a solid base, and (3) a step of removing low-boiling compounds and high-boiling compounds from the acetonitrile from step (2), wherein the step (3) may be effected after the step (1) and before the step (2).

    摘要翻译： 一种净化粗乙腈的方法，包括：（1）使粗乙腈与新生氧接触的步骤，（2）使步骤（1）的乙腈与固体碱接触的步骤，和（3） 沸腾化合物和来自步骤（2）的乙腈的高沸点化合物，其中步骤（3）可以在步骤（1）之后和步骤（2）之前进行。

    Switching power supply and adapter for switching power supply
    53.
    发明授权
    Switching power supply and adapter for switching power supply 失效
    切换电源和适配器切换电源

    公开(公告)号：US5170070A

    公开(公告)日：1992-12-08

    申请号：US651369

    申请日：1991-04-11

    申请人： Masayuki Hattori ,  Shigeo Nakamura ,  Akihiro Sakurai

    发明人： Masayuki Hattori ,  Shigeo Nakamura ,  Akihiro Sakurai

    IPC分类号： H02H7/12 ,  H02J9/06 ,  H02M3/28

    CPC分类号： H02M3/28 ,  H02J9/062 ,  Y10T307/50 ,  Y10T307/615

    摘要： A switching power supply which detects a power failure within a short period and maintains the DC output voltage (V.sub.O) for a long time. The switching power supply comprises a first voltage control means which controls a switching means (2) by means of a pulse width modulation means (9) which responds to a first voltage comparator means (8) which compares the DC output voltage (V.sub.O) and a reference voltage (V.sub.R); a second voltage control means having a pulse width modulation means working voltage range expansion means (12) which responds to a second voltage comparator means (11) which compares the DC output voltage (V.sub.O) and a second reference voltage (V.sub.RR); wherein further provision is made of a second switching means (16) for connecting a precharged second capacitor (15) in parallel to the first capacitor (1), in response to the second signal successively outputted by the second voltage comparator means (11) in a short period.

    Switching regulator
    54.
    发明授权
    Switching regulator 失效
    开关稳压器

    公开(公告)号：US4942508A

    公开(公告)日：1990-07-17

    申请号：US363515

    申请日：1989-05-30

    申请人： Shigeo Nakamura

    发明人： Shigeo Nakamura

    IPC分类号： H02M3/28 ,  H02M3/338

    CPC分类号： H02M3/28 ,  H02M3/3385

    摘要： A switching regulator for controlling an output voltage by a pulse width of a switching element such as a transistor and the like at a primary side of the switching regulator. The switching regulator is provided with a feedback element which converts an output voltage at a secondary side into a feedback current, and controls an amount of charge of a capacitor (C3) to control a time for which the transistor (Q1) is kept on at the primary side and an amount of charge of a speed-up capacitor (C2) at the primary side. When a small load is imposed, an excessive increase in the output voltage can be prevented by controlling an amount of charge on the capacitor (3) to control the keeping-on-time and an amount of charge of the speed-up capacitor (C2) at the primary side. This also shortens the time for which the transistor (Q1) at the primary side is kept on.

    Disk drive housing structure
    55.
    发明授权
    Disk drive housing structure 失效
    磁盘驱动器外壳结构

    公开(公告)号：US4894735A

    公开(公告)日：1990-01-16

    申请号：US206270

    申请日：1988-06-13

    申请人： Mikio Takahashi ,  Yoshihiro Moribe ,  Hideo Maekawa ,  Takaaki Abo ,  Yasuo Yamamoto ,  Shigeo Nakamura ,  Osamu Beppu

    发明人： Mikio Takahashi ,  Yoshihiro Moribe ,  Hideo Maekawa ,  Takaaki Abo ,  Yasuo Yamamoto ,  Shigeo Nakamura ,  Osamu Beppu

    IPC分类号： G11B25/04 ,  G11B33/14

    CPC分类号： G11B33/14 ,  G11B25/043

    摘要： A disk drive housing structure has a rotating disk for recording information and a transducer adapted to write and read information on and from the disk. The structure further includes a positioning system having at least an arm to which the transducer is fixed and which is adapted to selectively position the transducer along the radial direction of the disk transducer by turning the arm. The structure also includes a member on which the disk, transducer and positioning system are mounted, wherein the mounting member includes a first housing which supports thereon both ends of a rotary shaft of the recording medium and both ends of a rotary shaft of the positioning system, and which has a first aperture part. The first housing further includes a second aperture part through which the disk and the rotary shaft supporting the disk are inserted and to which a supporting member for the rotary shaft of the recording medium is fixed.

    Ringing converter
    56.
    发明授权
    Ringing converter 失效
    振铃转换器

    公开(公告)号：US4467406A

    公开(公告)日：1984-08-21

    申请号：US313613

    申请日：1981-10-21

    申请人： Masayuki Hattori ,  Shigeo Nakamura

    发明人： Masayuki Hattori ,  Shigeo Nakamura

    IPC分类号： H02M3/338 ,  H02P13/20

    CPC分类号： H02M3/338

    摘要： A ringing converter of the type having an output voltage stabilizing circuit connected on the primary side of a transformer. The converter is further provided with a circuit for detecting the primary current, which is proportional to the load current on the secondary side of the transformer. This enables detection of a change in the output voltage due to fluctuation in the load current on the secondary side, as detected by the detecting circuit. A signal indicative of the detected change is fed back to an oscillator circuit in order to stabilize the output voltage.

    摘要翻译： 一种具有连接在变压器初级侧的输出稳压电路的振铃转换器。 转换器还设有用于检测初级电流的电路，其与变压器次级侧上的负载电流成比例。 由检测电路检测到，能够检测由于次级侧的负载电流的波动引起的输出电压的变化。 指示检测到的变化的信号被反馈到振荡器电路，以便稳定输出电压。

    Stabilizing power supply apparatus
    57.
    发明授权
    Stabilizing power supply apparatus 失效
    稳定供电装置

    公开(公告)号：US4460955A

    公开(公告)日：1984-07-17

    申请号：US452139

    申请日：1982-12-22

    申请人： Masayuki Hattori ,  Shigeo Nakamura

    发明人： Masayuki Hattori ,  Shigeo Nakamura

    IPC分类号： G05F1/32 ,  G05F1/38 ,  G05F1/44 ,  H02P13/24

    CPC分类号： G05F1/38 ,  G05F1/44

    摘要： A stabilizing power supply apparatus including, as a switching element, a magnetic amplifier supplied with a rectangular wave voltage produced by an inverter and controlled by a reset current. An error sensing circuit senses a difference between the output voltage of the magnetic amplifier and a reference voltage to produce an error signal corresponding to the sensed difference. An amplifier circuit amplifies the error signal into the reset current for the magnetic amplifier. The amplifier circuit includes a NPN-type transistor for amplifying the control current into the reset current and first and second diodes. The first diode has an anode terminal connected to a negative power supply line and a cathode terminal connected to the collector of the transistor in order that charge will not accumulate on the transistor base. The second diode has an anode terminal connected to the emitter of the transistor and a cathode terminal connected to the magnetic amplifier. The reset current is applied to the magnetic amplifier through the second diode to hold the output voltage of the apparatus constant by regulating the on/off timing of the magnetic amplifier in accordance with the difference between the magnitude of the output voltage and the magnitude of the reference voltage.

    摘要翻译： 一种稳定电源装置，包括作为开关元件的提供有由逆变器产生的矩形波电压的磁放大器，并由复位电流控制。 误差检测电路检测磁放大器的输出电压和参考电压之间的差异，以产生对应于所检测差值的误差信号。 放大器电路将误差信号放大到磁放大器的复位电流。 放大器电路包括用于将控制电流放大到复位电流的NPN型晶体管以及第一和第二二极管。 第一二极管具有连接到负电源线的阳极端子和连接到晶体管的集电极的阴极端子，以使电荷不会积聚在晶体管基极上。 第二二极管具有连接到晶体管的发射极的阳极端子和连接到磁放大器的阴极端子。 通过第二二极管将复位电流施加到磁放大器，以通过根据输出电压的幅度和输出电压的大小之间的差来调节磁放大器的接通/断开定时来保持设备的输出电压恒定 参考电压。

    Power source device for bubble memory unit
    58.
    发明授权
    Power source device for bubble memory unit 失效
    气泡存储单元电源装置

    公开(公告)号：US4451902A

    公开(公告)日：1984-05-29

    申请号：US282268

    申请日：1981-07-10

    申请人： Ryoji Imazeki ,  Masayuki Hattori ,  Shigeo Nakamura

    发明人： Ryoji Imazeki ,  Masayuki Hattori ,  Shigeo Nakamura

    IPC分类号： G11C11/14 ,  G06F1/26 ,  G06F1/28 ,  G06F1/30 ,  G06F12/16 ,  G11C19/08 ,  H02M3/335

    CPC分类号： H02M3/33507 ,  G11C19/085

    摘要： In a power source device for a bubble memory unit consisting of a bubble memory part and a control part, a controlling supply voltage to be applied to both the bubble memory part and the control part is produced by a power source circuit based on a pulse width modulation system. The power source circuit is provided with a circuit which can expand the signal pulse width in excess of its upper-limit value during the ordinary voltage control. When the controlling supply voltage has become lower than a predetermined value, the pulse width is expanded so that the refresh operation may be perfectly executed when the power source device for the bubble memory unit is turned off.

    摘要翻译： 在由气泡存储部分和控制部分构成的气泡存储器单元的电源装置中，通过基于脉冲宽度的电源电路产生要施加到气泡存储部分和控制部分的控制电源电压 调制系统。 电源电路设置有在普通电压控制期间可以使信号脉冲宽度超过其上限值的电路。 当控制电源电压已经变得低于预定值时，脉冲宽度被扩大，使得当用于气泡存储单元的电源装置关闭时可以完美地执行刷新操作。