公开(公告)号：EP2548417A1

公开(公告)日：2013-01-23

申请号：EP11711667.3

申请日：2011-02-23

申请人： Koninklijke Philips Electronics N.V.

发明人： FANG, Yuhong

IPC分类号： H05B41/295 ,  H05B41/04

CPC分类号： H05B41/298

摘要： An electronic ballast for parallel lamp operation with program start including an electronic ballast for fluorescent lamps operably connected in parallel, each of the fluorescent lamps having lamp filaments. The electronic ballast includes a current fed self oscillating inverter (110) and preheat windings (127) operably connected to the current fed self oscillating inverter (110) to provide filament power (134) to the lamp filaments during the preheat time. The current fed self oscillating inverter (110) includes an output transformer (112) having a primary output transformer winding (114) and a secondary output transformer winding (116), the secondary output transformer winding (116) being operably connected to provide lamp power (132) to the fluorescent lamps; and a switch circuit (118) operably connected in series with the primary output transformer winding (114), the switch circuit (118) having a switch (120) operably connected in parallel with an inductor (124).

公开(公告)号：EP2223573B1

公开(公告)日：2012-05-30

申请号：EP08863323.5

申请日：2008-12-08

申请人： Koninklijke Philips Electronics N.V.

发明人： TAEKEMA, Harko, J ,  DIJKSTRA, Jacob ,  LESHEM, Pawel ,  FRANKENA, Johannes, A.

IPC分类号： H05B41/295 ,  H01J61/32

CPC分类号： H05B41/295 ,  H01J61/327 ,  H01J61/547

摘要： A compact gas discharge lamp (301) comprising four (or more) interconnected tube segments (11, 12, 13, 14) is provided with an external electrode (310) that extends at least throughout the length of the tube segments and that is in contact with all tube segments. Several embodiments of the external electrode are disclosed. The external electrode is preferably connected to a node (C) midway between the lamp electrodes, to which end a capacitive divider (441, 442) is arranged in parallel with the lamp.

公开(公告)号：EP2452543A1

公开(公告)日：2012-05-16

申请号：EP10728238.6

申请日：2010-07-05

申请人： Tridonic GmbH & Co KG

发明人： FLAX, Dirk

IPC分类号： H05B41/292 ,  H05B41/295 ,  H05B41/298 ,  H05B41/39

CPC分类号： H05B41/2928 ,  H05B41/38

摘要： The invention relates to a method for operating gas discharge lamps (3) comprising a temperature-dependent characteristic current/voltage curve U(I). The method is characterized in that, in order to prevent an unstable operation at low external temperatures, the exceeding of a prescribed maximum value of the lamp operating voltage or a gradient value thereof is prevented by increasing the lamp current.

公开(公告)号：EP2440021A2

公开(公告)日：2012-04-11

申请号：EP10193170.7

申请日：2010-11-30

申请人： Skynet Electronic Co., Ltd.

发明人： Liang, Jim-Hung

IPC分类号： H05B41/282 ,  H05B41/295

CPC分类号： H05B41/295 ,  H05B41/2828 ,  Y02B20/188

摘要： The present invention is to provide a ballast circuit, which includes a preheat circuit configured to perform a fixed-time, fixed-frequency preheating process on filaments at both ends of a fluorescent light tube before it is lit. While the filaments are being preheated, a power driving circuit generates an output signal whose frequency is far higher than resonant frequency of a resonant circuit, and controls the preheat circuit for enabling a filament transformer and a high-frequency coupling capacitor in the preheat circuit to couple the voltage of the output signal to the filaments and thereby preheat the filaments, but not light up the light tube. When the preheat period is up, the power driving circuit stops the preheating process and changes the frequency of the output signal to a level close to the resonant frequency, thereby oscillating the resonant circuit and generating a high voltage enough for lighting the light tube.

摘要翻译： 本发明提供一种镇流器电路，其包括预热电路，其被配置为在点亮之前在荧光灯管的两端对灯丝执行固定时间的固定频率预热处理。 当灯丝被预热时，功率驱动电路产生频率远高于谐振电路的谐振频率的输出信号，并且控制预热电路，以使预热电路中的灯丝变压器和高频耦合电容器 将输出信号的电压耦合到灯丝，从而预热灯丝，但不会使灯管点亮。 当预热周期结束时，电力驱动电路停止预热处理，并将输出信号的频率改变到接近谐振频率的水平，从而振荡谐振电路并产生足够高的电压来点亮光管。

公开(公告)号：EP2259660A3

公开(公告)日：2011-12-28

申请号：EP10164250.2

申请日：2010-05-28

申请人： OSRAM SYLVANIA Inc.

发明人： Bakre, Shashank ,  Kumar, Nitin

IPC分类号： H05B41/28 ,  H05B41/295 ,  H05B41/282 ,  H05B41/298

CPC分类号： H05B41/28 ,  H05B41/295 ,  H05B41/42

摘要： A control circuit for use in a ballast (100) configured for powering a first lamp set and a second lamp set. The second lamp set is operated via a controller (122B) and a second lamp driver circuit (120B). The controller (122B) enables the second lamp driver circuit (120B) as a function of a monitored value corresponding to a current through a lamp of the second lamp set. The control circuit (170) includes first (172) and second input terminals (174) for selectively connecting to the power supply. The control circuit (170) reduces the monitored value as a function of a connection state of the first (172) and second input terminals (174) of the control circuit (170) to the power supply. Thus, the control circuit (170) causes the controller (122B) to selectively operate the second lamp driver circuit (120B) in order to energize the second lamp set in combination with the first lamp set.

公开(公告)号：EP1502479B1

公开(公告)日：2011-10-12

申请号：EP02729348.9

申请日：2002-06-07

申请人： Access Business Group International LLC

发明人： BAARMAN, David, W.

IPC分类号： H05B41/295

CPC分类号： H05B41/295 ,  A61L2/10 ,  B01D2201/301 ,  B01D2201/34 ,  C02F1/283 ,  C02F1/32 ,  C02F1/325 ,  C02F9/005 ,  C02F2201/006 ,  C02F2201/3222 ,  C02F2201/3228 ,  C02F2201/326 ,  F21W2131/103 ,  H01F38/14 ,  H01J5/50 ,  H01J5/52 ,  H01J5/54 ,  H01J61/56 ,  H01K1/44 ,  H01K1/46 ,  H05B37/03 ,  H05B39/00 ,  H05B41/10 ,  H05B41/24 ,  H05B41/36 ,  Y02B20/19

摘要： A lamp assembly configured to inductively receive power from a primary coil. The lamp assembly includes a lamp circuit including a secondary and a lamp connected in series. In a first aspect, the lamp circuit includes a capacitor connected in series with the lamp and the secondary to tune the circuit to resonance. The capacitor is preferably selected to have a reactance that is substantially equal to or slightly less than the reactance of the secondary and the impedance of the lamp. In a second aspect, the lamp assembly includes a sealed transparent sleeve that entirely encloses the lamp circuit so that the transparent sleeve is fully closed and unpenetrated. The transparent sleeve is preferably the lamp sleeve itself, with the secondary, capacitor and any desired starter mechanism disposed within its interior.

公开(公告)号：EP2106676B1

公开(公告)日：2011-09-07

申请号：EP07859518.8

申请日：2007-12-21

申请人： Access Business Group International LLC

发明人： BAARMAN, David W. ,  MOLLEMA, Scott A. ,  STODDARD, Ronald L. ,  SCHWANNECKE, Joshua K.

IPC分类号： H05B41/295

CPC分类号： H05B41/295

摘要： An inductively powered gas discharge lamp assembly having a secondary circuit with starter circuitry that provides pre-heating when power is supplied to the secondary circuit at a pre-heat frequency and that provides normal operation when power is supplied to the secondary circuit at an operating frequency. In one embodiment, the starter circuitry includes a pre-heat capacitor connected between the lamp electrodes and an operating capacitor located between the secondary coil and the lamp. The pre-heat capacitor is selected so that the electrical flow path through the pre-heat capacitor has a lesser impedance than the electrical flow path through the gas of the lamp when power is applied to the secondary circuit at the pre-heat frequency, and so that the electrical flow path through the pre-heat capacitor has a greater impedance than the electrical flow path through the gas when power is applied the operating frequency. The primary circuit may include a tank circuit for which the resonant frequency can be adjusted to match the pre-heat frequency and the operating frequency.

公开(公告)号：EP2198672B1

公开(公告)日：2011-08-31

申请号：EP08802680.2

申请日：2008-09-26

申请人： Tridonic GmbH & Co KG

发明人： DWORATZEK, Dirk ,  HÖGL, Andreas ,  MITTERBACHER, Andre

IPC分类号： H05B41/295 ,  H05B41/36

CPC分类号： H05B41/295 ,  H05B41/36

摘要： In order to determine operational parameters of a gas discharge lamp (L) to be operated with an electronic ballast (V), the cold resistance (Tcold) and the hot resistance (Rhot) of a helix (W1) are determined at at least two different times during the preheating phase. During the preheating phase, the heating power or the heating current is kept constant or alternatively, a predetermined heating power or a predetermined heating current is set at the beginning of the preheating phase. Thus a split of the resistance values during the preheating phase is carried out. The differential resistance (Rdiff) is formed from the hot resistance (Rhot) and the cold resistance (Rcold) and is independent from the start temperature of the helix (W1). The differential resistance (Rdiff) is compared to stored reference values in order to set the operational parameters corresponding to the lamp type on the ballast (V).

公开(公告)号：EP1821581A3

公开(公告)日：2011-04-06

申请号：EP07250529.0

申请日：2007-02-09

申请人： Mass Technology (H.K.) Ltd.

发明人： Foo, Onn Fah

IPC分类号： H05B37/02 ,  H05B41/295 ,  H05B41/392

CPC分类号： H05B37/0218 ,  H05B41/295 ,  H05B41/3922 ,  H05B41/3925 ,  Y02B20/46 ,  Y02B20/48

摘要： A light control circuit for use in light control fluorescent lamps comprises a filter and rectifier circuit (1), a frequency control and resonant circuit (2) and an ambient brightness signal sampling and control circuit (4); wherein the ambient brightness signal sampling and control circuit (4) advantageously adopts an integrated circuit (IC2) to control or adjust light sensitivity of the light control circuit in an accurate manner and to control the on/off status of the light control circuit in an intelligent way such that the output of the light control circuit is not susceptible to a sudden change of the ambient brightness.

摘要翻译： 一种用于光控荧光灯的调光电路，包括滤波整流电路（1），频率控制谐振电路（2）和环境亮度信号采样控制电路（4）; 其中所述环境亮度信号采样和控制电路（4）有利地采用集成电路（IC2）以精确的方式控制或调节所述光控制电路的光敏度并且控制所述光控制电路的开/关状态 智能化的方式，使得灯光控制电路的输出不易受到环境亮度的突然改变的影响。

公开(公告)号：EP2277362A1

公开(公告)日：2011-01-26

申请号：EP09737934.1

申请日：2009-03-12

申请人： Osram Gesellschaft mit beschränkter Haftung

发明人： FUCHS, Kirsten ,  HILSCHER, Achim ,  NOLL, Thomas

IPC分类号： H05B41/295

CPC分类号： H05B41/295

摘要： The invention relates to a method for operating a gas discharge lamp (1), wherein an electrical heating current (I
H ) and an electrical discharge current (I
d ) are at least temporarily supplied to an electrode (6, 7) when the gas discharge lamp (1) is operated. The value (SoS1, SoS2) of the sum of the squares of the electrical currents (I
1 , I
2 ) supplied via the current supply lines (8, 9, 10, 11) that are connected to an electrode (6, 7) is adjusted, in the nominal operation of the gas discharge lamp (1), at an interval between 1.2 times the square of the test current (I
T ) provided for the gas discharge lamp (1) and 2 times the square of the test current (I
T ). The invention also relates to a lighting system comprising a gas discharge lamp and an operating device for the gas discharge lamp.