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    • 33. 发明授权
    • Constant-voltage diode for over-voltage protection
    • 用于过电压保护的恒压二极管
    • US5430311A
    • 1995-07-04
    • US947518
    • 1992-09-21
    • Susumu MurakamiYukimasa SatouHiroshi Narita
    • Susumu MurakamiYukimasa SatouHiroshi Narita
    • H01L29/866H01L21/329H01L21/332H01L29/861H02H9/04H02M7/5387H03K17/16H03K17/73H01L29/74
    • H01L29/66106H01L29/66371H01L29/861
    • A constant-voltage diode has a first semiconductor region of a first conductivity type, an adjoining semiconductor region of a second conductivity type, a third semiconductor region of the second conductivity type adjoining the second semiconductor region, and a fourth semiconductor region of the first conductivity type partially surrounded by the second semiconductor region. At low reverse biases between a cathode electrode and an anode electrode, the behavior of the device is determined by the pn junction between the first and second semiconductor regions. As the reverse biasing increases, the depletion layers of that junction will reach the fourth semiconductor region, but the reverse bias at this time is insufficient to break down that junction. A further increase of reverse bias causes breakdown of the pn junction between the third and fourth semiconductor regions. This effect is achieved by suitable impurity concentrations in the semiconductor regions. A plurality of fourth semiconductor regions may be provided, and a bi-directional structure can be obtained by providing a polarity reversed structure with the first semiconductor region in common.
    • 恒压二极管具有第一导电类型的第一半导体区域,第二导电类型的相邻半导体区域,与第二半导体区域相邻的第二导电类型的第三半导体区域和第一导电类型的第四半导体区域 类型部分被第二半导体区域包围。 在阴极电极和阳极电极之间的低反向偏压下,器件的行为由第一和第二半导体区域之间的pn结确定。 当反向偏置增加时,该结的耗尽层将到达第四半导体区域,但此时的反向偏压不足以破坏该结。 反向偏压的进一步增加导致第三和第四半导体区域之间的pn结的击穿。 这种效应是通过在半导体区域中合适的杂质浓度来实现的。 可以提供多个第四半导体区域,并且通过与第一半导体区域共同设置极性反转结构,可以获得双向结构。
    • 35. 发明授权
    • Header apparatus
    • 标题装置
    • US4778395A
    • 1988-10-18
    • US111321
    • 1987-10-22
    • Hiroshi Narita
    • Hiroshi Narita
    • G06K17/00H01R13/629H05K1/00
    • H01R13/629
    • A header apparatus for a flat IC pack having at least one conductive terminal includes a header housing which includes an IC pack chamber, an opening communicating with the IC pack chamber, the IC pack being inserted into and extracted from the opening, and a pair of actuation means, each of which includes drive member having a first surface formed inside the IC pack chamber of the header housing and a first rack, operation member which includes a second rack positioned to face the first rack of the drive means and an operation portion formed outside the IC pack chamber, and a pinion engaged with the first and second racks, wherein the first surface of the drive member is moved in an insertion direction of the IC pack by inserting the IC pack into the IC pack chamber, and pushes the IC pack inserted into the IC pack chamber in a direction opposite to the insertion direction of the IC pack by moving the operation portion of the operation means in the insertion direction of the IC pack.
    • 一种用于具有至少一个导电端子的扁平IC封装的插头装置,包括:插座壳体,其包括IC封装室,与所述IC封装室连通的开口,所述IC封装件插入并从所述开口中拔出;以及一对 致动装置,每个致动装置包括具有形成在集管壳体的IC封装室内的第一表面的驱动构件和第一齿条,操作构件,其包括定位成面对驱动装置的第一齿条的第二齿条和形成的操作部分 IC封装室外部,以及与第一和第二机架接合的小齿轮,其中驱动构件的第一表面通过将IC封装插入IC封装室而沿IC封装的插入方向移动,并推动IC 通过沿IC封装的插入方向移动操作装置的操作部分,将IC封装室沿与IC封装的插入方向相反的方向插入到IC封装室中。
    • 38. 发明授权
    • Motor control apparatus with an improved thyristor chopper circuit
    • 电机控制装置,具有改进的晶闸管斩波电路
    • US4284934A
    • 1981-08-18
    • US10304
    • 1979-02-07
    • Hiroshi NaritaMichimasa HoriuchiMasahiko IbamotoHideaki Rokutan
    • Hiroshi NaritaMichimasa HoriuchiMasahiko IbamotoHideaki Rokutan
    • H02P7/29H02P5/16
    • H02P7/29Y10S388/902Y10S388/917Y10S388/92
    • A motor control apparatus to supply current from a D-C source to an electric motor has a thyristor chopper circuit, the duty factor of which is controlled depending on a current instruction signal. The thyristor chopper circuit is provided between the terminals of the D-C source in series with an electric motor, and has main and auxiliary thyristors. A series connection of a capacitor and a reactor, forming commutating elements, is connected across the auxiliary thyristor and oscillates to generate a pulse of current through a forward diode in order to turn off the main thyristor when the auxiliary thyristor is turned on. In addition, a saturable current transformer having first, second and third windings is provided. Through the first winding chopper current flows, and the second winding operates as the reactance of the commutating elements. The third winding is provided within the closed circuit formed when the chopper circuit is blocked, and causes current across the secondary winding to charge the capacitor of said chopper circuit.
    • 从D-C源向电动机供给电流的电动机控制装置具有晶闸管斩波电路,其占空因数根据电流指令信号而被控制。 晶闸管斩波电路设置在与电动机串联的D-C源的端子之间,并具有主晶闸管和辅助晶闸管。 电容器和电抗器的串联连接,形成换向元件,跨过辅助晶闸管连接并振荡,以产生通过正向二极管的电流脉冲,以便在辅助晶闸管导通时关断主晶闸管。 此外,提供具有第一,第二和第三绕组的饱和电流互感器。 通过第一绕组斩波电流流动,第二绕组作为换向元件的电抗运行。 第三绕组设置在当斩波电路被阻塞时形成的闭合电路中,并且使得跨过次级绕组的电流对所述斩波电路的电容器充电。
    • 39. 发明授权
    • Braking control system selectively operable in dynamic and regenerative
braking operation for electric car
    • 制动控制系统可选择性地在电动汽车的动态和再生制动操作中操作
    • US4216420A
    • 1980-08-05
    • US929956
    • 1978-08-01
    • Yoshiji JinboEiji KozuHiroshi Narita
    • Yoshiji JinboEiji KozuHiroshi Narita
    • H02P3/12B60L7/22H02P3/08H02P3/14
    • H02P3/08
    • A chopper and a series circuit of a dynamic braking resistor and a thyristor are connected in parallel with a d.c. motor which is operated as a generator during braking operation. A series circuit of a diode and an inductance element is connected in series with the d.c. motor. A condenser connected between the ground and the junction of the inductance element and the diode forms a filter circuit together with the inductance element. Current generated by the d.c. motor flows into a d.c. source through the diode and the inductance element during regenerative braking operation. An over-voltage detector fires the braking thyristor when the voltage across the condenser becomes greater than a predetermined limit value, as a result the dynamic braking operation is performed.A chopper controller varies the interval between an ON pulse to turn the chopper into ON state and an OFF pulse to turn the chopper into OFF state for adjusting ON time and OFF time of the chopper in response to the current through the d.c. motor. An operation changer provides a signal to an automatic phase shifter to extend the interval between the ON and OFF pulses to a predetermined period of time enough to quench the braking thyristor when the braking operation of said d.c. motor is changed from the dynamic braking operation to the regenerative braking operation.
    • 动态制动电阻和晶闸管的斩波器和串联电路与直流电源并联连接。 在制动时作为发电机运转的电动机。 二极管和电感元件的串联电路与直流电源串联连接。 发动机。 连接在地和电感元件与二极管的结之间的电容器与电感元件一起形成滤波电路。 目前由d.c. 电机流入直流。 在再生制动操作期间通过二极管和电感元件来源。 当电容器两端的电压变得大于预定极限值时,过电压检测器发出制动晶闸管,结果是执行动态制动操作。 斩波控制器改变导通脉冲之间的间隔,以将斩波器变为导通状态,并且断开脉冲以使斩波器变为断开状态,以响应于通过直流电流的电流来调节斩波器的接通时间和断开时间。 发动机。 操作变换器向自动移相器提供信号,以在ON和OFF脉冲之间的间隔延长到预定的时间段,足以在所述直流制动的制动操作时使制动晶闸管猝熄。 电动机从动态制动操作改变为再生制动操作。