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    • 2. 发明申请
    • LED UNIT FOR COOPERATION WITH A MAINS DIMMER
    • LED单元与主要调光器合作
    • WO2011114261A1
    • 2011-09-22
    • PCT/IB2011/050995
    • 2011-03-10
    • KONINKLIJKE PHILIPS ELECTRONICS N.V.KAHLMAN, Henricus, Marius, Joseph, MariaVERVOORT, Michel
    • KAHLMAN, Henricus, Marius, Joseph, MariaVERVOORT, Michel
    • H05B33/08
    • H05B33/0815
    • An LED lamp unit (100) comprises: a unit input (101, 102) capable of receiving dimmed mains voltage (PCACV) from a supplying mains dimmer (1); a lamp driver (32) having input terminals (33, 34) coupled to the unit input to receive the dimmed mains voltage and capable of converting the received dimmed mains voltage to a dimmed LED current; at least one LED (31) coupled to output terminals (35, 36) of the lamp driver (32); and a bleeder circuit (200) coupled to the unit input for drawing a bleeder current (½) from the received mains voltage. The bleeder circuit (200) is an adaptive bleeder circuit comprising an intelligent control circuit (300), capable of determining a condition of the supplying mains dimmer. The control circuit (300) adaptively optimizes the bleeder current in relation to the condition of the supplying mains dimmer.
    • LED灯单元(100)包括:能够从供电电源调光器(1)接收暗电源电压(PCACV)的单元输入端(101,102); 具有耦合到所述单元输入端的输入端子(33,34)的灯驱动器(32),以接收所述调光的电源电压并且能够将所接收的调光的电源电压转换为变暗的LED电流; 耦合到所述灯驱动器(32)的输出端子(35,36)的至少一个LED(31); 以及耦合到所述单元输入的泄放电路(200),用于从所接收的电源电压中抽取泄放电流(1/2)。 泄放电路(200)是一种自适应泄放电路,包括智能控制电路(300),能够确定供电电源调光器的状态。 控制电路(300)相对于供电电源调光器的状况自适应地优化放电电流。
    • 3. 发明申请
    • LED LIGHT SOURCE
    • WO2012168844A3
    • 2012-12-13
    • PCT/IB2012/052790
    • 2012-06-04
    • KONINKLIJKE PHILIPS ELECTRONICS N.V.KAHLMAN, Henricus Marius Joseph MariaKURT, Ralph
    • KAHLMAN, Henricus Marius Joseph MariaKURT, Ralph
    • H05B33/08
    • A LED light source comprises -a full bridge rectifier equipped with a first input terminal and a second input terminal for coupling to output terminals of the phase cut dimmer, -a series arrangement comprising N LED loads, a first and second end of said series arrangement being coupled to a first output terminal and a second output terminal of the full bridge rectifier respectively, -control means for during a period of the rectified AC supply voltage subsequently making the LED loads comprised in the first series arrangement carry a current, one by one and in dependency of the momentary amplitude of the rectified AC supply voltage when the momentary amplitude increases and for subsequently making the LED loads stop carrying a current, one by one, and in dependency of the momentary amplitude of the rectified AC supply voltage when the momentary amplitude decreases, said control means controlling the current through the LED loads at zero when the output voltage of the phase cut dimmer equals zero and controlling the current through the LED loads at a value that is independent from the phase angle of the phase cut dimmer when the output voltage of the phase cut dimmer differs from zero Volt. In order to make the LED light source compatible with a phase cut dimmer, the LED light source is further equipped with -a switchable bleeder current source coupled between the first and second output terminal of the full bridge rectifier, -a latch coupled between the first and second output terminals of the full rectifier bridge and comprising a series arrangement of a resistor and a capacitor to prevent the current through the dimmer from crossing zero after a leading edge generated by the phase cut dimmer, in case the phase cut dimmer is a leading edge phase cut dimmer, -a unidirectional element arranged in series with the capacitor for preventing discharging of the capacitor via the LED loads or the adjustable bleeder current source, and -a clamp circuit coupled to the capacitor and comprising a current source for discharging the capacitor and providing a low ohmic path for the dimmer current when the dimmer is off.
    • 4. 发明申请
    • LED LIGHT SOURCE
    • LED光源
    • WO2012168844A2
    • 2012-12-13
    • PCT/IB2012052790
    • 2012-06-04
    • KONINKL PHILIPS ELECTRONICS NVKAHLMAN HENRICUS MARIUS JOSEPH MARIAKURT RALPH
    • KAHLMAN HENRICUS MARIUS JOSEPH MARIAKURT RALPH
    • H05B33/08
    • H05B33/0845H05B33/0812H05B33/0815H05B33/083H05B33/0842H05B33/0851H05B37/02Y02B20/347Y02B20/348
    • A LED light source comprises -a full bridge rectifier equipped with a first input terminal and a second input terminal for coupling to output terminals of the phase cut dimmer, -a series arrangement comprising N LED loads, a first and second end of said series arrangement being coupled to a first output terminal and a second output terminal of the full bridge rectifier respectively, -control means for during a period of the rectified AC supply voltage subsequently making the LED loads comprised in the first series arrangement carry a current, one by one and in dependency of the momentary amplitude of the rectified AC supply voltage when the momentary amplitude increases and for subsequently making the LED loads stop carrying a current, one by one, and in dependency of the momentary amplitude of the rectified AC supply voltage when the momentary amplitude decreases, said control means controlling the current through the LED loads at zero when the output voltage of the phase cut dimmer equals zero and controlling the current through the LED loads at a value that is independent from the phase angle of the phase cut dimmer when the output voltage of the phase cut dimmer differs from zero Volt. In order to make the LED light source compatible with a phase cut dimmer, the LED light source is further equipped with -a switchable bleeder current source coupled between the first and second output terminal of the full bridge rectifier, -a latch coupled between the first and second output terminals of the full rectifier bridge and comprising a series arrangement of a resistor and a capacitor to prevent the current through the dimmer from crossing zero after a leading edge generated by the phase cut dimmer, in case the phase cut dimmer is a leading edge phase cut dimmer, -a unidirectional element arranged in series with the capacitor for preventing discharging of the capacitor via the LED loads or the adjustable bleeder current source, and -a clamp circuit coupled to the capacitor and comprising a current source for discharging the capacitor and providing a low ohmic path for the dimmer current when the dimmer is off.
    • 一种LED光源,包括一个全桥整流器,它配备有一个第一输入端和一个耦合到相位调光器的输出端的第二输入端,一个包括N个LED负载的串联装置,所述串联装置的第一和第二端 分别耦合到全桥整流器的第一输出端子和第二输出端子, - 控制装置,用于在整流的AC电源电压的时段期间随后使包括在第一串联装置中的LED负载逐个携带电流 并且依赖于瞬时振幅增加时整流的AC电源电压的瞬时振幅,并且随后使LED负载一个接一个地停止承载电流,并且依赖于当瞬时的整流的AC电源电压的瞬时幅度 所述控制装置控制通过LED的电流负载为0时,相位切割调光器的输出电压e 当相位切割调光器的输出电压不同于零伏特时,通过LED负载控制电流,该值与相位切割调光器的相位角无关。 为了使LED光源与相位调光器兼容,LED光源还配备有耦合在全桥整流器的第一和第二输出端之间的可切换放电电流源, - 耦合在第一 和全整流器桥的第二输出端,并且包括电阻器和电容器的串联布置,以防止在由相位切割调光器产生的前沿之后通过调光器的电流过零,在相位切割调光器为前导的情况下 边缘相位调光器, - 与电容器串联布置的单向元件,用于防止经由LED负载或可调放电电流源对电容器放电,以及耦合到电容器的钳位电路,并且包括用于对电容器放电的电流源 并且当调光器关闭时为调光器电流提供低欧姆路径。
    • 8. 发明申请
    • LED LIGHT SOURCE
    • LED光源
    • WO2013027171A1
    • 2013-02-28
    • PCT/IB2012/054217
    • 2012-08-21
    • KONINKLIJKE PHILIPS ELECTRONICS N.V.KAHLMAN, Henricus Marius Joseph MariaKURT, RalphTAO, Haimin
    • KAHLMAN, Henricus Marius Joseph MariaKURT, RalphTAO, Haimin
    • H05B33/08
    • H05B33/0815H05B33/083
    • A LED light source comprises a first rectifier (DB1) having input terminals coupled to an AC voltage source and output terminals connected by a first series arrangement comprising N LED loads and further comprises circuitry(I1, I2, I3, CC) for making the LED loads one by one carry a current when the momentary value of the AC voltage increases and one by one stop carrying a current when the momentary value of the AC voltage decreases. The LED light source also comprises a second rectifier (DB2) having input terminals coupled to the AC voltage source via a reactive element and output terminals connected by a second series arrangement comprising M LED loads and further comprises circuitry (I4) for making the LED loads one by one carry a current when the momentary value of the AC voltage present at the input terminals of the second rectifier increases and one by one stop carrying a current when the momentary value of the AC voltage decreases.
    • LED光源包括具有耦合到AC电压源的输入端和通过包括N个LED负载的第一串联装置连接的输出端的第一整流器(DB1),并且还包括用于制造LED的电路(I1,I2,I3,CC) 当交流电压的瞬时值增加时,逐个负载一个负载一个电流,并且当交流电压的瞬时值减小时,一个接一个地停止传递电流。 LED光源还包括具有经由电抗元件耦合到AC电压源的输入端子的第二整流器(DB2),以及由包括M LED负载的第二串联装置连接的输出端子,还包括用于使LED负载 当交流电压的瞬时值减小时,当存在于第二整流器的输入端的交流电压的瞬时值增加并且一个接一个地停止传输电流时,一个接一个地携带电流。