利索-全球专利检索

  1. 登录
  2. 注册

搜索结果

6 条记录 (耗时 0.015 秒)

    LED retrofit driver circuit and method of operating the same
    1.
    发明授权
    LED retrofit driver circuit and method of operating the same 有权

    公开(公告)号：US10299331B2

    公开(公告)日：2019-05-21

    申请号：US14117047

    申请日：2012-05-14

    申请人： Robertus Leonardus Tousain ,  Redouane Eddeane ,  Dennis Johannes Antonius Claessens ,  Philip Louis Zulma Vael ,  Jack Jiang

    发明人： Robertus Leonardus Tousain ,  Redouane Eddeane ,  Dennis Johannes Antonius Claessens ,  Philip Louis Zulma Vael ,  Jack Jiang

    IPC分类号： H05B33/08 ,  F21K9/23 ,  H05B39/04

    摘要： A LED retrofit driver circuit (3) is provided, comprising at least an input (6) for receiving an operating voltage from a power supply (2), an output (8) for connection to one or more LED units (5), a power converter (7) connected with said input (6) and said output (8) and configured to provide a lamp current (50) at said output (8) during operation in at least a first and a second operating state. To provide a versatile circuit (3), allowing operation with a variety of power supplies and under various load conditions, in said first operating state, the power converter (7) is adapted to switch between a high current generating mode (40), in which the power converter (7) is configured to draw current pulses from said power supply (2) to provide a first average input current (33a), and an OFF mode (42) in which no current is drawn from said power supply (2). In said second operating state, said power converter (7) is adapted at least to operate in a low current generating mode (41), in which the power converter (7) is configured to draw a current from said power supply (2) to provide a second average input current (33b) which is lower than said first average input current (33a).

    CIRCUIT ARRANGEMENT FOR CONTROLLING A LED UNIT AND METHOD OF OPERATING THE SAME
    3.
    发明申请
    CIRCUIT ARRANGEMENT FOR CONTROLLING A LED UNIT AND METHOD OF OPERATING THE SAME 审中-公开
    用于控制LED单元的电路布置及其操作方法

    公开(公告)号：US20160044756A1

    公开(公告)日：2016-02-11

    申请号：US14241489

    申请日：2012-08-29

    申请人： Dennis Johannes Antonius CLAESSENS ,  Jascha VAN POMMEREN ,  Jan Wojciech OBREBSKI ,  Yi WANG ,  Philip Louis Zulma VAEL ,  Sait IZMIT

    发明人： Dennis Johannes Antonius CLAESSENS ,  Jascha VAN POMMEREN ,  Jan Wojciech OBREBSKI ,  Yi WANG ,  Philip Louis Zulma VAEL ,  Sait IZMIT

    IPC分类号： H05B33/08

    CPC分类号： H05B33/0845 ,  H05B33/0809 ,  H05B33/0842

    摘要： A circuit arrangement (3, 3′) for controlling the brightness of at least one LED unit (2) is provided, comprising an input (8) for receiving a phase-cut operating voltage from a power supply (4), a signal processor (14, 14′), connected with said input (8) and adapted to provide a dimming signal (12) for said at least one LED unit (2) from said operating voltage. To allow an efficient reduction of noise in the dimming signal (12) but simultaneously to allow an improved dimming of said LED unit (2), said signal processor (14, 14′) is being configured to operate at least in a noise suppression mode (30) and a dimming mode (31). A control device (15, 15′) is provided, connected with said signal processor (14, 14′) and configured to set the mode of said signal processor (14, 14′) in dependence of the variation in said operating voltage.

    摘要翻译： 提供了一种用于控制至少一个LED单元（2）的亮度的电路装置（3,3'），包括用于从电源（4）接收相位切断工作电压的输入端（8），信号处理器 （14,14'），与所述输入端（8）连接并且适于为所述至少一个LED单元（2）提供来自所述工作电压的调光信号（12）。 为了有效地降低调光信号（12）中的噪声，但同时允许所述LED单元（2）的改进的调光，所述信号处理器（14,14'）被配置为至少在噪声抑制模式 （30）和调光模式（31）。 提供一个与所述信号处理器（14,14'）连接的控制装置（15,15'），并配置成根据所述工作电压的变化来设置所述信号处理器（14,14'）的模式。