Disk reproducing apparatus
    82.
    发明申请
    Disk reproducing apparatus 有权
    磁盘重放装置

    公开(公告)号:US20070169140A1

    公开(公告)日:2007-07-19

    申请号:US11653318

    申请日:2007-01-16

    IPC分类号: G11B17/028

    CPC分类号: G11B17/0281

    摘要: A disk reproducing apparatus with improved quality is provided which has a clamper and a clamper plate. By providing the clamp plate with connection portions radially extending from a radially inner peripheral portion toward radially outer peripheral portion of the clamp plate, the axial displacement relative to a clamp holder can be increased as compared to that in the existing structure. Moreover, by disposing the clamper on the radially inner peripheral portion of the clamp plate so as to be elastically deformable, the spacing in clamping can be increased to a drive part.

    摘要翻译: 提供了一种具有改进质量的盘再现装置,其具有夹持器和夹持器板。 通过为夹板提供从夹紧板的径向内周部向径向外周部径向延伸的连接部分,与现有结构相比,可以增加相对于夹持器的轴向位移。 此外,通过将夹持器设置在夹持板的径向内周部上以便可弹性变形,可以将夹持间隔增加到驱动部。

    State detecting method and insulation resistance detector
    83.
    发明申请
    State detecting method and insulation resistance detector 有权
    状态检测方法和绝缘电阻检测器

    公开(公告)号:US20070132459A1

    公开(公告)日:2007-06-14

    申请号:US11633580

    申请日:2006-12-05

    IPC分类号: G01R31/02

    CPC分类号: G01R31/025 G01R27/18

    摘要: A control circuit 52 makes the pulse oscillation circuit 51 output pulse signals of frequency 2.5 Hz and 4.5 Hz. The control circuit 52 calculates a difference between outputs of a low pass filter 53 at 2.5 Hz and at 4.5 Hz. The control circuit 52 detects a state of the insulation resistance detector 50 based on the difference.

    摘要翻译: 控制电路52使脉冲振荡电路51输出2.5Hz,4.5Hz的脉冲信号。 控制电路52计算2.5Hz和4.5Hz的低通滤波器53的输出之间的差。 控制电路52基于该差异来检测绝缘电阻检测器50的状态。

    Drive circuit for brushless DC fan motor

    公开(公告)号:US07091681B2

    公开(公告)日:2006-08-15

    申请号:US10819223

    申请日:2004-04-07

    IPC分类号: H02P7/06

    CPC分类号: H02P6/08 H02P6/10

    摘要: A drive circuit for a brushless DC fan motor for rotating a rotor (permanent magnet) by a rotating magnetic field produced by turning on/off the flow of electric current to field coils by a signal to control terminals of switch elements in which switch sections are each connected in series with the field coils. When connecting capacitors for absorbing a current spike in parallel with the switch sections of the switch elements, resistors are each connected between the field coil and switch section, through which the capacitors are connected in parallel with the switch sections. A discharge current of the capacitors which absorbed a current spike when turning on the switch elements is passed via the resistors, thereby eliminating a current spike.

    Power regulated window
    85.
    发明授权
    Power regulated window 有权
    电力调节窗

    公开(公告)号:US07023161B2

    公开(公告)日:2006-04-04

    申请号:US11195787

    申请日:2005-08-03

    IPC分类号: G05D3/00

    摘要: The present invention is to provide a power regulated window having a window glass to be closed intentionally when some foreign body is pinched by the window glass for security reasons. When a close signal is output to a semiconductor switching element from window regulator switches, the window glass is closed. When some foreign body such as arm or fingers is pinched by the window glass, a load current of a motor becomes abnormal and the motor rotates reversely to open the window glass in order not to damage the foreign body. Besides this protective function, when the foreign body is pinched by the window glass and a prohibit signal to invalidate the reverse rotation is output, a reversing controller is stopped and the window glass is closed continuously by a bypass switching element.

    摘要翻译: 本发明的目的是提供一种具有窗玻璃的动力调节窗,当窗口玻璃出于安全考虑被夹住时,有意闭合的窗玻璃。 当窗口调节器开关向半导体开关元件输出关闭信号时,关闭窗玻璃。 当手指或手指等异物被窗玻璃夹住时,电机的负载电流变得异常,电机反向旋转以打开窗玻璃,以免损坏异物。 除了这种保护功能之外,当异物被窗玻璃挤压并输出禁止反转无效信号时,反转控制器停止,窗玻璃被旁路开关元件连续关闭。

    Power-window jamming preventing apparatus
    87.
    发明授权
    Power-window jamming preventing apparatus 有权
    电动车窗防堵装置

    公开(公告)号:US06940246B2

    公开(公告)日:2005-09-06

    申请号:US10933359

    申请日:2004-09-03

    摘要: A power-window jamming preventing apparatus, includes a current sensing circuit, which senses a motor current flowing through a motor; a current limiting circuit, which increases and decreases the motor current based on a current-limitation control signal outputted from the current sensing circuit when an amount of increase of the motor current exceeds a predetermined vale; and a jamming determining circuit, which determines a jamming of a foreign matter in the window glass, and a potential difference generating circuit, which monitors a power source voltage supplied to the current sensing circuit and the power window motor, and which clamps a third reference voltage so as to drop a constant voltage from the third reference when the power source is low such that a potential difference between the second reference voltage and the third reference voltage is kept greater than a predetermined voltage.

    摘要翻译: 一种电动窗口防止装置,包括感测电动机电流的电流检测电路; 电流限制电路,当电动机电流的增加量超过预定值时,基于从电流检测电路输出的电流限制控制信号增加和减少电动机电流; 以及干扰确定电路,其确定窗玻璃中的异物的卡住;以及电位差产生电路,其监测提供给电流感测电路和电动车窗电动机的电源电压,并且钳位第三参考 电压使得当电源为低时从第三参考电压降低恒定电压,使得第二参考电压和第三参考电压之间的电位差保持大于预定电压。

    Device for detecting failure of field effect transistor
    89.
    发明授权
    Device for detecting failure of field effect transistor 失效
    用于检测场效应晶体管故障的装置

    公开(公告)号:US06876531B2

    公开(公告)日:2005-04-05

    申请号:US10309106

    申请日:2002-12-04

    CPC分类号: H02H7/0844

    摘要: A device for detecting failure of a field effect transistor (FET) includes a first FET1 connected in series with a motor M between a power source terminal and ground, a motor control unit 11 for on/off controlling a voltage to be applied to said motor to set normal/reverse operation and stopping of said motor, a gate control unit for on/off controlling a gate voltage to be applied to said FET to control driving of said motor, a voltage applying means VB, R1 for applying a positive voltage at a prescribed voltage level to the current input terminal of the FET; a voltage detecting unit CMP1 for detecting the voltage level of the positive voltage thus applied when said gate voltage is off; and a failure detecting unit 14 for detecting short-circuiting failure of the FET on the basis of a change in the voltage level detected by said voltage detecting unit when said gate voltage is off while said motor stops. In this configuration, failure of the FET for controlling driving of the motor can be detected both when the motor stops and operates.

    摘要翻译: 用于检测场效应晶体管(FET)的故障的装置包括与电源端与地之间的电动机M串联连接的第一FET1,用于开/关控制施加到所述电动机的电压的电动机控制单元11 设定正常/反向操作和停止所述电动机;门控制单元,用于开/关控制施加到所述FET的栅极电压以控制所述电动机的驱动;电压施加装置VB,R1,用于施加正电压 对FET的电流输入端施加规定的电压电平; 电压检测单元CMP1,用于检测当所述栅极电压关闭时施加的正电压的电压电平; 以及故障检测单元14,用于当所述电机停止时,基于所述电压检测单元检测到的电压电平的变化来检测FET的短路故障。 在这种结构中,当马达停止并运行时,可以检测用于控制马达驱动的FET的故障。