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    • 4. 发明申请
    • ILLUMINATION SYSTEM COMPRISING A PLURALITY OF LEDS
    • 包含多个LED的照明系统
    • WO2012069961A1
    • 2012-05-31
    • PCT/IB2011/055099
    • 2011-11-15
    • KONINKLIJKE PHILIPS ELECTRONICS N.V.SEMPEL, Adrianus
    • SEMPEL, Adrianus
    • H05B33/08
    • H05B33/0848H05B33/0827H05B33/0863
    • An illumination system (100)comprises: an LED system (120) comprising two or more LED groups (21, 22, 23, 24; 451, 452) and current distribution means (140), wherein each LED group includes one or more individual LEDs, the LED system (120) having two input terminals (121, 122); a single controllable driver (130) for providing working power to the LED system (120), the driver having two output terminals (131, 132) coupled to the two input terminals (121, 122) of the LED system (120), respectively; a control device (2) for controlling the driver (130); wherein the control device (2) is designed for controlling the driver output voltage (Vi); and wherein the current distribution means are responsive to the input voltage (Vi) at the input terminals of the LED system for drawing current from the driver and distributing the current among the different LED groups in dependence on the input voltage level.
    • 照明系统(100)包括:包括两个或更多个LED组(21,22,23,24; 451,452)和电流分配装置(140)的LED系统(120),其中每个LED组包括一个或多个个体 LED,具有两个输入端(121,122)的LED系统(120); 用于向LED系统(120)提供工作功率的单个可控驱动器(130),所述驱动器具有分别耦合到所述LED系统(120)的两个输入端子(121,122)的两个输出端子(131,132) ; 控制装置(2),用于控制驾驶员(130); 其中所述控制装置(2)被设计成用于控制所述驱动器输出电压(Vi); 并且其中所述电流分布装置响应于所述LED系统的输入端处的输入电压(Vi),用于从所述驱动器引出电流并根据所述输入电压电平分配所述不同LED组中的电​​流。
    • 8. 发明申请
    • LED CAPACITANCE DISCHARGE WITH LIMITED CURRENT
    • 带电流的LED电容放电
    • WO2003098974A1
    • 2003-11-27
    • PCT/IB2003/001554
    • 2003-04-22
    • KONINKLIJKE PHILIPS ELECTRONICS N.V.SEMPEL, Adrianus
    • SEMPEL, Adrianus
    • H05B33/08
    • G09G3/3216G09G3/3275G09G2310/0248G09G2310/0251G09G2320/0233G09G2330/025G09G2330/06H05B33/0896
    • This invention relates to a driver (10') for light emitting devices with an associated capacitance, comprising: - a first switch (S2') coupled to a first terminal (11a') of a light emitting device (11') included in a two dimensional array of light emitting devices, the first switch (S2') being coupled for allowing discharging of the associated capacitance (12') of the light emitting device (11') upon closing of the first switch (S2'); and- a current limiting circuit (31) coupled to the first switch (S2') and to a reference voltage for discharging the associated capacitance (12') with a limited current. Further, the current limiting circuit (31) comprises a first discharge circuit (50) and a second discharge circuit. As a result, the discharge current is controlled in an efficient manner during discharging of the associated capacitance (12').
    • 本发明涉及一种用于具有相关电容的发光器件的驱动器(10'),包括: - 耦合到包括在发光器件(11')中的发光器件(11')的第一端子(11a')的第一开关(S2') 发光装置的二维阵列,第一开关(S2')被耦合以允许在关闭第一开关(S2')时放电发光装置(11')的相关电容(12'); 以及耦合到第一开关(S2')的限流电路(31)和用于以有限电流放电相关电容(12')的参考电压。 此外,限流电路(31)包括第一放电电路(50)和第二放电电路。 结果,在相关联的电容(12')的放电期间,放电电流被有效地控制。