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    • 31. 发明申请
    • BALLAST WITH AN ARC QUENCHING CIRCUIT
    • 具有弧形淬火电路的电压
    • WO2013106310A1
    • 2013-07-18
    • PCT/US2013/020643
    • 2013-01-08
    • OSRAM SYLVANIA INC.
    • CHOUDHURY, AyanCHAKRABORTY, Arindam
    • H05B41/285H05B41/292
    • H05B41/2853H05B41/2855
    • An arc detection circuit that detects an occurrence of arcing between ballast and a lamp is provided. A transformer has a primary side connected between the ballast and the lamp to receive lamp current and conduct the lamp current from the ballast to the lamp during normal operation. A secondary side of the transformer produces a transformer voltage as a function of the lamp current received by the primary side. The produced transformer voltage is less than a threshold value during normal operation and greater than the threshold value during an occurrence of arcing between the ballast and the lamp. The arc detection circuit reduces the produced transformer voltage and provides it to the ballast so as to shut down the ballast operation.
    • 提供一种电弧检测电路,其检测镇流器与灯之间的电弧的发生。 变压器在镇流器和灯之间具有初级侧,以在正常操作期间接收灯电流并将灯电流从镇流器传导到灯。 变压器的次级侧产生作为由初级侧接收的灯电流的函数的变压器电压。 所产生的变压器电压在正常操作期间小于阈值,并且大于在镇流器和灯之间发生电弧时的阈值。 电弧检测电路降低产生的变压器电压并将其提供给镇流器,以便关闭镇流器操作。
    • 35. 发明申请
    • METHOD AND CIRCUIT FOR ENABLING DIMMING USING TRIAC DIMMER
    • 使用TRIAC调光器启动调试的方法和电路
    • WO2006120629A2
    • 2006-11-16
    • PCT/IB2006051429
    • 2006-05-08
    • KONINKL PHILIPS ELECTRONICS NVVAN MEURS JOS
    • VAN MEURS JOS
    • H05B41/2853H05B41/3924
    • To enable dimming of an energy-saving lamp, in particular a gas discharge lamp, using a standard TRIAC dimmer circuit, a large additional current is drawn when the TRIAC is in a non-conductive state, and a small additional current is drawn when the TRIAC is in a conductive state. A current control circuit may be connected between the supply voltage and the ballast circuit of the lamp for drawing said additional currents. The current control circuit comprises two switches and a number of resistors for providing a large or a small resistance. In an embodiment, the amount of current drawn is controlled instead of the resistance using additional circuitry in the current control circuit.
    • 为了使能使用标准TRIAC调光电路的节能灯(特别是气体放电灯)变暗,当TRIAC处于非导通状态时,绘制大的附加电流,并且当 TRIAC处于导通状态。 电流控制电路可以连接在用于抽出所述附加电流的灯的电源电压和镇流器电路之间。 电流控制电路包括两个开关和用于提供大的或小的电阻的多个电阻器。 在一个实施例中,使用电流控制电路中的附加电路来控制所绘制的电流量而不是电阻。
    • 38. 发明申请
    • ELECTRONIC BALLAST
    • 电子镇流器
    • WO2002093983A1
    • 2002-11-21
    • PCT/IB2002/001679
    • 2002-05-15
    • KONINKLIJKE PHILIPS ELECTRONICS N.V.
    • SHEN, Eric, B.
    • H05B41/00
    • H05B41/28H05B41/2853Y02B20/186
    • A high power factor electronic ballast for a gas discharge lamp is disclosed which can provide bus voltage control in response to varying load conditions without the need for direct sensing of the load conditions. The electronic ballast includes an input stage; an output stage; a slow loop controller configured to regulate the bus voltage to a constant value during steady state operation; a hysteresis band over voltage protection (OVP) controller for maintaining the bus voltage in a predetermined hysteresis voltage band during open circuit and pre-ignition conditions; and an on-time limiting controller for guaranteeing a minimum on-time for the input stage. The electronic ballast further includes at least one DC bus capacitor for storing energy created from energy imbalances between the input and output stage. The novel construction makes it possible to regulate the bus voltage to a constant value under steady state conditions using the slow loop controller, and to prevent the bus voltage from increasing in an uncontrolled manner under open circuit and pre-ignition conditions using the over voltage protection controller. This is advantageously achieved without having to directly sense the load condition.
    • 公开了一种用于气体放电灯的高功率因数电子镇流器,其可以响应于变化的负载条件提供总线电压控制,而不需要直接感测负载条件。 电子镇流器包括输入级; 输出阶段 缓慢循环控制器,被配置为在稳态操作期间将总线电压调节到恒定值; 滞后带过压保护(OVP)控制器,用于在开路和预启动条件期间将总线电压保持在预定的滞后电压带; 以及用于保证输入级的最小导通时间的导通时间限制控制器。 电子镇流器还包括至少一个DC总线电容器,用于存储由输入和输出级之间的能量不平衡产生的能量。 该新颖的结构使得可以使用慢回路控制器在稳态条件下将总线电压调节到一个恒定值,并且在开路和预点火条件下使用过电压保护来防止总线电压以不受控制的方式增加 控制器。 有利地实现这一点,而不必直接感测负载条件。
    • 40. 发明申请
    • CIRCUIT ARRANGEMENT
    • 电路布置
    • WO1996015571A1
    • 1996-05-23
    • PCT/IB1995000923
    • 1995-10-25
    • PHILIPS ELECTRONICS N.V.PHILIPS NORDEN AB
    • PHILIPS ELECTRONICS N.V.PHILIPS NORDEN ABPETERS, Henricus, Petrus, Maria
    • H02H09/04
    • H05B41/2853H02H7/1222
    • The invention relates to a circuit arrangement for operating a lamp (LA), provided with input terminals (K1, K2) for connection to a supply voltage source which delivers a low-frequency AC voltage, rectifying means (D1-D4) coupled to the input terminals for rectifying the low-frequency AC voltage and provided with output terminals (K3, K4), a first branch comprising a series arrangement of a breakdown element (X1) and first capacitive means (C1) and interconnecting the output terminals, and a second branch shunting the first capacitive means for discharging said first capacitive means. According to the invention, the circuit arrangement is in addition provided with further capacitive means (C2) across which a DC voltage is present during lamp operation, with which voltage the lamp is supplied, a DC-DC converter (L1, D5, S1, Sc) coupled to the output terminals and the further capacitive means, and a third branch comprising a series arrangement of diode means (D6) and the further capacitive means and shunting the first capacitive means. It is achieved thereby that the DC voltage across the further capacitive means does not rise or rises only slightly in the case of two transients in quick succession or a transient having a comparatively high amplitude or a comparatively long duration.
    • 本发明涉及一种用于操作灯(LA)的电路装置,其具有用于连接到提供低频AC电压的电源电压源的输入端子(K1,K2),耦合到该电源的整流装置(D1-D4) 输入端子,用于对低频交流电压进行整流并具有输出端子(K3,K4),包括击穿元件(X1)和第一电容装置(C1)的串联布置并互连输出端子的第一支路,以及 第二分支分流用于对所述第一电容装置进行放电的第一电容装置。 根据本发明,电路装置还具有另外的电容装置(C2),在灯操作期间存在直流电压,通过该电压供应灯,DC-DC转换器(L1,D5,S1, Sc)耦合到输出端子和另外的电容装置,以及第三支路,包括二极管装置(D6)的串联装置和另外的电容装置并且分流第一电容装置。 因此,在快速连续的两个瞬变或具有相对较高幅度或较长持续时间的瞬变的情况下,跨越另一个电容装置的直流电压不会上升或稍微上升。