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    Apparatus and methods of operation of passive LED lighting equipment
    1.
    发明授权
    Apparatus and methods of operation of passive LED lighting equipment 有权

    公开(公告)号：US09717120B2

    公开(公告)日：2017-07-25

    申请号：US12582620

    申请日：2009-10-20

    Applicant: Ron Shu Yuen Hui ,  Wu Chen

    Inventor： Ron Shu Yuen Hui ,  Wu Chen

    IPC: H05B33/08

    CPC classification number: H05B33/0809 ,  Y02B20/342

    Abstract: This invention is concerned with the control and design of a LED lighting system that does not need electrolytic capacitors in the entire system and can generate light output with reduced luminous flux fluctuation. The proposal is particularly suitable, but not restricted to, off-line applications in which the lighting system is powered by the ac mains. By eliminating electrolytic capacitors which have a limited lifetime of typically 15000 hours, the proposed system can be developed with passive and robust electrical components such as inductor and diode circuits, and it features long lifetime, low maintenance cost, robustness against extreme temperature variations and good power factor. No extra electronic control board is needed for the proposed passive circuits, which can become dimmable systems if the ac input voltage can be adjusted by external means.

    APPARATUS AND METHODS OF OPERATION OF PASSIVE LED LIGHTING EQUIPMENT
    2.
    发明申请
    APPARATUS AND METHODS OF OPERATION OF PASSIVE LED LIGHTING EQUIPMENT 有权
    被动LED照明设备的操作方法及操作方法

    公开(公告)号：US20100270942A1

    公开(公告)日：2010-10-28

    申请号：US12582620

    申请日：2009-10-20

    Applicant: Ron Shu Yuen HUI ,  Wu Chen

    Inventor： Ron Shu Yuen HUI ,  Wu Chen

    IPC: H05B37/02

    CPC classification number: H05B33/0809 ,  Y02B20/342

    Abstract: This invention is concerned with the control and design of a LED lighting system that does not need electrolytic capacitors in the entire system and can generate light output with reduced luminous flux fluctuation. The proposal is particularly suitable, but not restricted to, off-line applications in which the lighting system is powered by the ac mains. By eliminating electrolytic capacitors which have a limited lifetime of typically 15000 hours, the proposed system can be developed with passive and robust electrical components such as inductor and diode circuits, and it features long lifetime, low maintenance cost, robustness against extreme temperature variations and good power factor. No extra electronic control board is needed for the proposed passive circuits, which can become dimmable systems if the ac input voltage can be adjusted by external means.

    Abstract translation: 本发明涉及在整个系统中不需要电解电容器的LED照明系统的控制和设计，并且可以产生具有降低的光通量波动的光输出。 该建议特别适用于但不限于照明系统由交流电源供电的离线应用。 通过消除寿命通常为15000小时的电解电容器，所提出的系统可以用无源和鲁棒的电气元件如电感器和二极管电路开发，具有寿命长，维护成本低，抗极端温度变化的鲁棒性和良好的性能 功率因数。 所提出的无源电路不需要额外的电子控制板，如果可以通过外部手段调整交流输入电压，则可以变成可调光系统。

    Bubble machine
    3.
    外观设计
    Bubble machine 有权

    公开(公告)号：USD947951S1

    公开(公告)日：2022-04-05

    申请号：US29772234

    申请日：2021-02-28

    Applicant: Wu Chen

    Designer： Wu Chen

    Driver for two or more parallel LED light strings
    4.
    发明授权
    Driver for two or more parallel LED light strings 有权
    两个或多个并联LED灯串的驱动程序

    公开(公告)号：US09313846B2

    公开(公告)日：2016-04-12

    申请号：US13883102

    申请日：2010-11-05

    Applicant: Wu Chen ,  Shu Yuen Ron Hui

    Inventor： Wu Chen ,  Shu Yuen Ron Hui

    IPC: H05B33/08

    CPC classification number: H05B33/083 ,  H05B33/0815 ,  H05B33/0827

    Abstract: An LED driver for a plurality of LED light strings has a common node and a plurality of driver output nodes for connection of a plurality of LED light strings. A master power circuit is provided and has a master output connected with the common node. A plurality of slave power circuits are provided which each have a slave output connected with a respective one of the driver output nodes.

    Abstract translation: 用于多个LED灯串的LED驱动器具有用于连接多个LED灯串的公共节点和多个驱动器输出节点。 提供主电源电路，并具有与公共节点连接的主输出。 提供了多个从属电源电路，每个从电源电路具有与驱动器输出节点中的相应一个连接的从输出。

    ELECTRICAL INSTRUMENT HAVING A PROTECTION CIRCUIT
    8.
    发明申请
    ELECTRICAL INSTRUMENT HAVING A PROTECTION CIRCUIT 有权
    具有保护电路的电气仪表

    公开(公告)号：US20110050299A1

    公开(公告)日：2011-03-03

    申请号：US12861883

    申请日：2010-08-24

    Applicant: Wei Dong ,  Wu Chen ,  Huanrong Song ,  Chuanyang Lu

    Inventor： Wei Dong ,  Wu Chen ,  Huanrong Song ,  Chuanyang Lu

    IPC: H03L7/00

    CPC classification number: H02H11/00

    Abstract: A protection circuit suitable for electrical instruments includes a software detecting circuit, a logic AND circuit, a driver and control circuit for engine operating power components, and a hardware detecting circuit connected with the logic AND circuit. Both the software detecting circuit and the hardware detecting circuit monitor the state of an operating switch and provide signals to the logic AND circuit. Only when the state of the switch changes from opened to closed and both detecting circuits determine that this state is correct will the driver and control circuit signal the engine to operate. Furthermore, by connecting two or more power components in serial at the same time, the engine will not work by accident and the machine will not be out of control when any one of the power components is damaged. A circuit using capacitors of suitable specification can also be provided to isolate the controlling pin of a power component in the form of an SCR to thereby avoid failure and damage of the entire system.

    Abstract translation: 适用于电气仪器的保护电路包括软件检测电路，逻辑与电路，用于发动机工作功率部件的驱动器和控制电路以及与逻辑与电路连接的硬件检测电路。 软件检测电路和硬件检测电路都监视操作开关的状态，并向逻辑与电路提供信号。 只有当开关状态从开启状态切换到闭合状态并且两个检测电路确定该状态是正确的时候，驱动器和控制电路将信号发动机运行。 此外，通过同时连接两个以上的电力部件，发动机不能意外工作，并且当任何一个功率部件损坏时，机器不会失控。 也可以提供使用适合规格的电容器的电路，以隔离SCR的形式的功率部件的控制引脚，从而避免整个系统的故障和损坏。

    Substrate for a chromatography column
    10.
    发明申请
    Substrate for a chromatography column 审中-公开
    基质用于色谱柱

    公开(公告)号：US20070090034A1

    公开(公告)日：2007-04-26

    申请号：US11254565

    申请日：2005-10-20

    Applicant: Robert Ricker ,  John Harland ,  Alan Broske ,  Wu Chen ,  Bernard Permar

    Inventor： Robert Ricker ,  John Harland ,  Alan Broske ,  Wu Chen ,  Bernard Permar

    IPC: B01D15/08

    CPC classification number: B01D15/22 ,  G01N30/603 ,  Y10T428/2982

    Abstract: A substrate for retaining a particulate packing medium within a chromatography column is disclosed. The substrate is formed from a polymer material and positionable to retain the packing medium within the column. The polymer has pores sized to retain the packing medium within the column but allow fluid, such as transport liquid or carrier gas to pass through. A method of forming the substrate within the column is also disclosed. The method includes placing a polymer precursor into the column and then polymerizing it to form the substrate.

    Abstract translation: 公开了一种用于将色谱柱内的颗粒填充介质保持的基材。 基材由聚合物材料形成并且可定位成将填料介质保持在柱内。 聚合物具有孔尺寸以将填料介质保持在塔内，但允许诸如运输液体或载气之类的流体通过。 还公开了在柱内形成衬底的方法。 该方法包括将聚合物前体放入柱中，然后将其聚合以形成基底。

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