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    • 12. 发明授权
    • Apparatus for controlling an ignition coil of an internal combustion
engine
    • 用于控制内燃机的点火线圈的装置
    • US4285322A
    • 1981-08-25
    • US53847
    • 1979-07-02
    • Toshikazu InaHisasi KawaiTakeshi Matsui
    • Toshikazu InaHisasi KawaiTakeshi Matsui
    • F02P3/04F02P3/045F02P3/055F02P9/00F02P11/02H03K17/082F02P3/02
    • H03K17/0826F02P11/02F02P3/0552F02P9/002
    • An apparatus for controlling an ignition coil of internal combustion engines including a power transistor connected to the primary winding of an ignition coil for controlling the energization and deenergization of the primary winding in response to a signal applied to the base of the power transistor. A feedback circuit, including a constant voltage diode, a capacitor and a resistor, is connected between the collector and base of the power transistor. When the power transistor becomes conductive from a nonconductive condition, a collector current of the power transistor flows through the capacitor and constant voltage diode due to the Miller integrator effect and the transition from nonconduction to conduction of the power transistor is made gradual thereby reducing a voltage generated in the secondary winding of the ignition coil.On the contrary, when the power transistor becomes nonconductive from the conductive condition, the constant voltage diode is rendered conductive due to a high voltage generated at the collector of the power transistor to allow a base current to flow and in turn to allow a collector current thereby preventing breakdown of the power transistor.
    • 一种用于控制内燃机的点火线圈的装置,包括连接到点火线圈的初级绕组的功率晶体管,用于响应于施加到功率晶体管的基极的信号来控制初级绕组的通电和断电。 包括恒压二极管,电容器和电阻的反馈电路连接在功率晶体管的集电极和基极之间。 当功率晶体管从非导通状态变为导通状态时,由于采用了米勒积分器效应,功率晶体管的集电极电流流过电容器和恒压二极管,并且从功率晶体管的非导通到导通的过渡逐渐变慢,从而降低了电压 在点火线圈的次级绕组中产生。 相反,当功率晶体管从导电状态变为非导通时,恒压二极管由于在功率晶体管的集电极处产生的高电压而导通,以允许基极电流流动,从而允许集电极电流 从而防止功率晶体管的击穿。
    • 20. 发明授权
    • Disc drive with rotational driving and optical pickup
    • 带旋转驱动和光学拾音器的光盘驱动器
    • US07843781B2
    • 2010-11-30
    • US12002583
    • 2007-12-18
    • Yuichiro IkemotoTatsumi ItoTakeshi MatsuiKoji Ashizaki
    • Yuichiro IkemotoTatsumi ItoTakeshi MatsuiKoji Ashizaki
    • G11B7/00
    • G11B7/0045G11B7/005G11B19/28G11B2007/0006
    • Disclosed is a disc drive apparatus. The disc drive apparatus includes a rotational driving unit rotating a disc-shaped recording medium having a plurality of addresses recorded on an information recording surface of the disc-shaped recording medium; an optical pickup recording and/or reproducing an information signal on the information recording surface of the disc-shaped recording medium rotated by the rotational driving unit; and a control unit controlling rotation of the disc-shaped recording medium via the rotational driving unit. In the disc drive apparatus, the control unit carries out a disc constant velocity rotating processing that sets a predetermined address out of the plurality of addresses as a constant velocity rotation address and continuously reproduces the constant velocity rotation address using the optical pickup.
    • 公开了一种盘驱动装置。 盘驱动装置包括旋转驱动单元,其旋转具有记录在盘形记录介质的信息记录表面上的多个地址的盘形记录介质; 在由旋转驱动单元旋转的盘状记录介质的信息记录表面上记录和/或再现信息信号的光学拾取器; 以及控制单元,其经由旋转驱动单元控制盘状记录介质的旋转。 在盘驱动装置中,控制单元执行盘定速旋转处理,其将多个地址中的预定地址设置为恒速旋转地址,并使用光学拾取器连续地再现等速旋转地址。