Electrically actuable engine valve providing position output
    3.
    发明授权
    Electrically actuable engine valve providing position output 失效
    电动发动机阀门提供位置输出

    公开(公告)号:US06269784B1

    公开(公告)日:2001-08-07

    申请号:US09559870

    申请日:2000-04-26

    Abstract: A controller for electrically actuated engine valves operates in a switching mode to monitor back EMF during periods when the coil drive current is off. Back EMF is used to determine a position of the armature so as to control the armature current to provide for soft seating of the valve reducing valve wear.

    Abstract translation: 用于电动发动机气门的控制器在切换模式下工作,以在线圈驱动电流关闭期间监视反电动势。 反电动势用于确定电枢的位置,以便控制电枢电流,以提供阀门减压阀磨损的软阀座。

    System for controlling lighting in an illuminating indicating device
    4.
    发明授权
    System for controlling lighting in an illuminating indicating device 失效
    用于控制照明指示装置中的照明的系统

    公开(公告)号:US5896010A

    公开(公告)日:1999-04-20

    申请号:US885331

    申请日:1997-06-30

    CPC classification number: B60Q3/044 B60Q1/2603 B60Q3/048 B60K2350/2069

    Abstract: A system for providing one-step dimming of indicator lights in an illuminating indicating device while allowing adjustable control of the general illumination of the device. The system includes a first current drain (176) coupled to an indicator light source (32-42) for drawing a first current through the indicator light source. A second current drain (186), controlled by control circuitry (198), couples to the indicator light source (32-42) for selectively drawing additional current through the indicator light source (32-42). In a preferred embodiment, the first current drain (176) couples to the second current drain (186) to regulate the additional current draw by the second current drain (186). Preferably, the control circuitry (198) is responsive to an illumination signal to prevent the additional current draw during a low ambient light condition. For general illumination of the indicator device (10), an illumination light source (56-60) responsive to the illumination signal may also be included.

    Abstract translation: 一种用于在照明指示装置中对指示灯进行一步调光同时允许对装置的一般照明进行可调节控制的系统。 该系统包括耦合到指示器光源(32-42)的第一电流漏极(176),用于抽出通过指示器光源的第一电流。 由控制电路(198)控制的第二电流消耗(186)耦合到指示器光源(32-42),用于选择性地吸取额外的电流通过指示器光源(32-42)。 在优选实施例中,第一电流漏极(176)耦合到第二电流漏极(186),以调节由第二电流消耗(186)引起的附加电流消耗。 优选地,控制电路(198)响应于照明信号以防止在低环境光条件期间的额外电流消耗。 对于指示器装置(10)的一般照明,还可以包括响应于照明信号的照明光源(56-60)。

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