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    Meter for accurately measuring integrated electric power
    3.
    发明授权
    Meter for accurately measuring integrated electric power 失效
    用于精确测量集成电力的仪表

    公开(公告)号：US4992725A

    公开(公告)日：1991-02-12

    申请号：US454510

    申请日：1989-12-21

    申请人： Masatoshi Komatsu ,  Shigeo Fushimi ,  Shigenori Wada ,  Hidetake Nakamura ,  Tadashi Kobayashi ,  Toshio Takagi

    发明人： Masatoshi Komatsu ,  Shigeo Fushimi ,  Shigenori Wada ,  Hidetake Nakamura ,  Tadashi Kobayashi ,  Toshio Takagi

    IPC分类号： G01R21/133

    CPC分类号： G01R21/1331

    摘要： In a watt-hour meter in which first and second input signals representing an analog electric current and an analog voltage of an alternating current are converted into first and second digital signals, a first adder produces a sum signal which represents a sum of the first input signal and an additional analog signal of a frequency different from that of the first input signal and which is substituted for the first input signal. The meter may further comprise a second adder which adds another additional analog signal to the second input signal. Alternatively, the meter comprises low-pass filters and oversample-and-convert circuits to produce the first and the second input digital signals. As a further alternative, the meter comprises a first inverter for inverting a selected one of the first and the second input signals into a first inverted signal. In this event, a first selector alternatingly selects one of the first inverted signal and the selected one of the first and the second input signals and the other of the first inverted signal and the selected one of the first and the second input signals at a predetermined time interval as a first selected signal. A second inverter for inverting a product signal representing a product of the first and the second digital signals into a second inverted signal. Ganged with the first selector, a second selector alternatingly selects one of the second inverted signal and the product signal at the predetermined time interval as a second selected signal so that the second inverted signal is selected when the first selector selects the first inverted signal.

    摘要翻译： 在表示模拟电流的第一和第二输入信号和交流电的模拟电压被转换为第一和第二数字信号的瓦特计中，第一加法器产生和信号，该和信号表示第一输入 信号和与第一输入信号不同的频率的附加模拟信号，并且代替第一输入信号。 仪表还可以包括第二加法器，其将另外的附加模拟信号添加到第二输入信号。 或者，仪表包括低通滤波器和过采样和转换电路以产生第一和第二输入数字信号。 作为另一替代方案，仪表包括第一反相器，用于将第一和第二输入信号中的所选择的一个反转为第一反相信号。 在这种情况下，第一选择器以预定的方式交替地选择第一和第二输入信号中的第一反相信号和第一反相信号中的另一个和第一和第二输入信号中的选择的一个， 时间间隔作为第一选择信号。 第二逆变器，用于将表示第一和第二数字信号的乘积的乘积信号反相为第二反相信号。 与第一选择器组合，第二选择器以预定时间间隔交替地选择第二反相信号和乘积信号中的一个作为第二选择信号，使得当第一选择器选择第一反相信号时选择第二反相信号。

    Switching power source circuitry having a current bypass circuit
    5.
    发明授权
    Switching power source circuitry having a current bypass circuit 失效
    具有电流旁路电路的开关电源电路

    公开(公告)号：US5706187A

    公开(公告)日：1998-01-06

    申请号：US545329

    申请日：1995-10-19

    申请人： Hidetake Nakamura

    发明人： Hidetake Nakamura

    IPC分类号： H02H9/04 ,  G05F1/613 ,  H02H7/12 ,  H02M3/28 ,  H02H7/122

    CPC分类号： H02H7/1213

    摘要： Power source circuitry is disclosed and has a DC power source and a switching circuit positioned at the primary side, a diode and a coil positioned at the secondary side and serially connected to a load, and a capacitor connected in parallel to the load. A current bypass circuit is connected in parallel to the load, and operates when a voltage applied to the load momentarily increases. When a current flowing through a load sharply decreases, the current bypass circuit conducts an abnormal current to be input to the load to the negative side. This suppresses the momentary increase in the voltage applied to the load. In a normal condition, no potential differences occur between the base and the emitter of a transistor, so that the transistor remains in an OFF state and prevents a current from flowing through the bypass circuit.

    摘要翻译： 公开了电源电路，并且具有位于初级侧的DC电源和开关电路，位于次级侧的二极管和线圈并串联连接到负载，以及与负载并联连接的电容器。 电流旁路电路与负载并联连接，并且当施加到负载的电压瞬间增加时工作。 当流过负载的电流急剧下降时，电流旁路电路导通异常电流，输入到负极侧的负载。 这抑制了施加到负载上的电压的瞬时增加。 在正常情况下，在晶体管的基极和发射极之间不产生电位差，使得晶体管保持截止状态并防止电流流过旁路电路。

    Rectifier circuit device and DC/Dc converter provided with the circuit device
    7.
    发明授权
    Rectifier circuit device and DC/Dc converter provided with the circuit device 失效
    整流电路器件和DC / Dc转换器配有电路器件

    公开(公告)号：US6141233A

    公开(公告)日：2000-10-31

    申请号：US382639

    申请日：1999-08-25

    申请人： Hidetake Nakamura

    发明人： Hidetake Nakamura

    IPC分类号： H01L21/8234 ,  H01L27/06 ,  H02M3/28 ,  H02M3/335 ,  H02M7/21 ,  H02M7/217

    CPC分类号： H02M7/217 ,  H02M3/33592 ,  Y02B70/1475

    摘要： A rectifier circuit device wherein a FET element for rectification and a diode for reflux are provided inside of one package. In this rectifier circuit device, there are provided a first external connection terminal connected to a drain of the FET element, a second external connection terminal connected to a source of the FET element and an anode of the diode inside of the package, and a third external connection terminal connected to a gate of the FET element and a cathode of the diode inside of the package. The FET element and the diode are integrated on the same chip.

    摘要翻译： 一种整流电路装置，其中在一个封装内部设置用于整流的FET元件和用于回流的二极管。 在该整流电路装置中，设置有与FET元件的漏极连接的第一外部连接端子，与FET元件的源极连接的第二外部连接端子和封装内的二极管的阳极， 连接到FET元件的栅极的外部连接端子和封装内部的二极管的阴极。 FET元件和二极管集成在同一芯片上。

    Meter for accurately measuring integrated electric power
    8.
    发明授权
    Meter for accurately measuring integrated electric power 失效
    用于精确测量集成电力的仪表

    公开(公告)号：US5311117A

    公开(公告)日：1994-05-10

    申请号：US817792

    申请日：1992-01-06

    申请人： Masatoshi Komatsu ,  Shigeo Fushimi ,  Shigenori Wada ,  Hidetake Nakamura ,  Tadashi Kobayashi ,  Toshio Takagi

    发明人： Masatoshi Komatsu ,  Shigeo Fushimi ,  Shigenori Wada ,  Hidetake Nakamura ,  Tadashi Kobayashi ,  Toshio Takagi

    IPC分类号： G01R21/133 ,  G01R21/06

    CPC分类号： G01R21/1331

    摘要： In a watt-hour meter in which first and second input signals representing an analog electric current and an analog voltage of an alternating current are converted into first and second digital signals, a first adder produces a sum signal which represents a sum of the first input signal and an additional analog signal of a frequency different from that of the first input signal and which is substituted for the first input signal. The meter may further comprise a second adder which adds another additional analog signal to the second input signal. Alternatively, the meter comprises low-pass filters and oversample-and-convert circuits to produce the first and the second input digital signals.

    摘要翻译： 在表示模拟电流的第一和第二输入信号和交流电的模拟电压被转换为第一和第二数字信号的瓦特计中，第一加法器产生和信号，该和信号表示第一输入 信号和与第一输入信号不同的频率的附加模拟信号，并且代替第一输入信号。 仪表还可以包括第二加法器，其将另外的附加模拟信号添加到第二输入信号。 或者，仪表包括低通滤波器和过采样和转换电路以产生第一和第二输入数字信号。

    Power MOSFET
    9.
    发明授权
    Power MOSFET 失效
    功率MOSFET

    公开(公告)号：US5801572A

    公开(公告)日：1998-09-01

    申请号：US604891

    申请日：1996-02-22

    申请人： Hidetake Nakamura

    发明人： Hidetake Nakamura

    IPC分类号： H01L29/78 ,  H03K17/12 ,  H03K17/687

    CPC分类号： H03K17/122

    摘要： A power MOSFET includes common source and drain terminals and a selection circuit. The sources and drains of a plurality of insulated gate field-effect transistors are respectively connected in parallel to the common source and drain terminals. The selection circuit selectively connects the gates of the insulated gate field-effect transistors to a gate terminal common to a source.

    摘要翻译： 功率MOSFET包括公共源极和漏极端子以及选择电路。 多个绝缘栅场效应晶体管的源极和漏极分别与公共源极和漏极端子并联连接。 选择电路将绝缘栅极场效应晶体管的栅极选择性地连接到源极共用的栅极端子。

    Rectifier for DC/DC converter
    10.
    发明授权
    Rectifier for DC/DC converter 失效
    整流器用于DC / DC转换器

    公开(公告)号：US5343383A

    公开(公告)日：1994-08-30

    申请号：US26695

    申请日：1993-03-05

    申请人： Yohsuke Shinada ,  Hidetake Nakamura

    发明人： Yohsuke Shinada ,  Hidetake Nakamura

    IPC分类号： H02M3/28 ,  H02M3/335 ,  H02M7/217

    CPC分类号： H02M3/33592 ,  Y02B70/1475

    摘要： A rectifier for a DC/DC converter includes first and second FETs, first and second capacitors, and first and second resistors. The first FET is connected in series with the secondary winding of a main transformer of the DC/DC converter. The second FET is connected in parallel with the series circuit constituted by the secondary winding of the main transformer and the first FET. The first and second capacitors are respectively connected between the gate of the first FET and the drain of the second FET and between the gate of the second FET and the drain of the first FET. The first and second resistors are respectively connected between the gate and source of the first FET and between the gate and source of the second FET.

    摘要翻译： 用于DC / DC转换器的整流器包括第一和第二FET，第一和第二电容器以及第一和第二电阻器。 第一个FET与DC / DC转换器的主变压器的次级绕组串联。 第二FET与由主变压器的次级绕组和第一FET构成的串联电路并联连接。 第一和第二电容器分别连接在第一FET的栅极和第二FET的漏极之间，以及第二FET的栅极和第一FET的漏极之间。 第一和第二电阻分别连接在第一FET的栅极和源极之间以及第二FET的栅极和源极之间。