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    • 2. 发明申请
    • LED LIGHT SOURCE WITH VALLEY- FILL SWITCHABLE CAPACITOR
    • LED光源,带有切换电容器
    • WO2012168828A3
    • 2013-06-27
    • PCT/IB2012052690
    • 2012-05-30
    • KONINKL PHILIPS ELECTRONICS NVTAO HAIMINKAHLMANN HENRICUS MARIUS JOSEPH MARIAKURT RALPH
    • TAO HAIMINKAHLMANN HENRICUS MARIUS JOSEPH MARIAKURT RALPH
    • H05B33/08
    • H05B33/0845H05B33/0812H05B33/0815H05B33/083H05B33/0842H05B33/0851H05B37/02Y02B20/347Y02B20/348
    • LED light source suitable for use with a phase cut dimmer (III), comprising . input terminals (Kl, K2) for connection to an AC supply voltage, . a rectifier (I) coupled to the input terminals, . a series arrangement comprising N LEDs (LL1, LL2, LL3) coupled to the rectifier, . control circuitry (IX) for sequentially activating (deactivating) the LEDs as the supply voltage increases (decreases), wherein the control circuitry comprises: . N controllable current regulators, each regulator being coupled between the cathode of a LED and ground and comprising a transistor and one impedance in series, . a global current control circuit (X) coupled to the control electrodes of said transistors and comprising circuitry for adjusting the voltage at said control electrodes in dependency of the phase angle, . a series arrangement of a switch (S) and a capacitor (C1) coupled- to the rectifier and . means (VIII) for rendering said switch conductive in case the AC supply voltage drops below a reference value.
    • LED光源适用于相位切割调光器(III),包括。 用于连接到AC电源电压的输入端子(K1,K2)。 整流器(I),其耦合到输入端子。 包括耦合到整流器的N个LED(LL1,LL2,LL3)的串联装置。 控制电路(IX),用于当电源电压增加(减小)时,顺序激活(停用)LED,其中控制电路包括:。 N个可控电流调节器,每个调节器耦合在LED的阴极和地之间并且包括串联的晶体管和一个阻抗。 耦合到所述晶体管的控制电极的全局电流控制电路(X),并且包括用于根据所述相位角调节所述控制电极处的电压的电路。 开关(S)和耦合到整流器的电容器(C1)的串联布置。 用于在交流电源电压低于参考值的情况下使所述开关导通的装置(VIII)。
    • 3. 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。
    • 4. 发明申请
    • LED LIGHT SOURCE
    • LED光源
    • WO2012168828A2
    • 2012-12-13
    • PCT/IB2012/052690
    • 2012-05-30
    • KONINKLIJKE PHILIPS ELECTRONICS N.V.TAO, HaiminKAHLMANN, Henricus Marius Joseph MariaKURT, Ralph
    • TAO, HaiminKAHLMANN, Henricus Marius Joseph MariaKURT, Ralph
    • H05B33/08
    • H05B33/0845H05B33/0812H05B33/0815H05B33/083H05B33/0842H05B33/0851H05B37/02Y02B20/347Y02B20/348
    • The invention relates to a LED light source,suitable for use with a phase cut dimmer such as a TRIAC dimmer (III), comprising - a first input terminal (K1) and a second input terminal (K2)for connection to a supply voltage source supplying a low frequency AC supply voltage with frequency f, -a rectifier (I) coupled to the input terminals for rectifying the low frequency AC supply voltage, - a series arrangement comprising N LED loads (LL1, LL2, LL3), a first and second end of said series arrangement being coupled to a first output terminal and a second output terminal of the rectifier, - control circuitry (IX) for subsequently making the LED loads conduct a current, one by one, in dependency of the instantaneous value of the low frequency AC supply voltage when the instantaneous value increases and for subsequently making the LED loads stop conducting a current, one by one, in dependency of the instantaneous value of the low frequency AC supply voltage when the instantaneous value decreases, wherein the control circuitry comprises - N control strings comprising a controllable current regulator and coupled between the cathode of a LED load and the second output terminal of the rectifier, and - a global current control circuit (X) coupled to the controllable current regulators for controlling the instantaneous value of the current through the control strings, wherein the controllable current regulators each comprise a series arrangement of a transistor and at least one impedance,and wherein the global current control circuit is coupled to the control electrodes of the transistors comprised in the controllable current regulators and comprises circuitry for adjusting the voltage present at the control electrodes of the transistors comprised in the control strings, in dependency of the adjusted phase angle of the phase cut dimmer, and - a series arrangement of a switch (S) and a capacitor (C1)coupled between the output terminals of the rectifier and control circuitry (VIII) for rendering the switch conductive in case the instantaneous value of the low frequency AC supply voltage drops below a reference value.
    • 本发明涉及一种适用于诸如TRIAC调光器(III)的相位调光器的LED光源,包括:用于连接到电源电压源的第一输入端子(K1)和第二输入端子(K2) 提供具有频率f的低频AC电源电压, - 耦合到输入端的整流器(I),用于整流低频AC电源电压; - 串联装置,包括N个LED负载(LL1,LL2,LL3),第一和 所述串联装置的第二端耦合到整流器的第一输出端和第二输出端;控制电路(IX),用于随后使LED负载根据所述串联装置的瞬时值一个接一个地导通电流 当瞬时值增加时,低频交流电源电压和随后使LED负载依赖于低频交流电源电压的瞬时值逐个停止传导电流,当瞬时值decr 其中控制电路包括N个控制串,其包括可控电流调节器并且耦合在LED负载的阴极和整流器的第二输出端之间,以及耦合到可控电流调节器的全局电流控制电路(X) 用于控制通过控制串的电流的瞬时值,其中可控电流调节器每个包括晶体管和至少一个阻抗的串联布置,并且其中全局电流控制电路耦合到晶体管的控制电极, 可控电流调节器,并且包括用于根据调相相位切割调光器的相位角调整存在于控制串中包括的晶体管的控制电极处的电压的电路,以及 - 开关(S)和 耦合在整流器的输出端子和控制电路(VI)之间的电容器(C1) II),用于在低频AC电源电压的瞬时值低于参考值的情况下使开关导通。
    • 8. 发明申请
    • LINEAR DRIVER FOR REDUCED PERCEIVED LIGHT FLICKER
    • 线性驱动器,用于减少闪光灯
    • WO2012080890A1
    • 2012-06-21
    • PCT/IB2011/055399
    • 2011-12-01
    • KONINKLIJKE PHILIPS ELECTRONICS N.V.TAO, Haimin
    • TAO, Haimin
    • H05B33/08
    • H05B37/0281H05B33/0809H05B33/0842
    • A driver (100) supplies power to drive at least one light source(130). The driver includes: a current regulator (140) connected in series with the at least one light source; and a conditioning circuit (120) configured to receive an AC supply voltage(110)having a primary frequency of between about 50 Hz to 60 Hz, and further configured to condition the received AC supply voltage to supply power to the at least one light source, wherein the conditioned voltage has a non-zero DC component and an AC component, and wherein a magnitude of the AC component at a frequency that is four times the primary frequency is greater than a magnitude of the AC component at the primary frequency, and is also greater than a magnitude of the AC component at a second harmonic of the primary frequency.
    • 驱动器(100)提供电力以驱动至少一个光源(130)。 驱动器包括:与至少一个光源串联连接的电流调节器(140); 以及调节电路(120),其被配置为接收具有大约50Hz至60Hz之间的主频率的AC电源电压(110),并且还被配置为调节所接收的AC电源电压以向所述至少一个光源 ,其中所述经调节的电压具有非零DC分量和AC分量,并且其中在主频率的四倍的频率处的AC分量的幅度大于所述主频率处的AC分量的幅度,以及 还大于主频率的二次谐波处的AC分量的大小。