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    • 91. 发明公开
    • Parallel lighting system for surface light source discharge lamps
    • BeleuchtungseinrichtungfürflächenartigeLichtquelle mit parallelen Entladungslampen
    • EP1581030A1
    • 2005-09-28
    • EP05251684.6
    • 2005-03-18
    • Ushijima, MasakazuChen, Hong-Fei
    • Ushijima, MasakazuTaido, Daisuke
    • H05B41/282
    • H05B41/2827
    • Disclosed is a low-cost parallel lighting system for discharge lamps for a surface light source, which reduces nonuniform brightness and static noise, and fulfills a requirement that lamp currents of individual cold-cathode fluorescent lamps should be uniform and stabilized. In a surface light source system having multiple discharge lamps, there is a module which lights the discharge lamps in parallel and whose input terminal and electrodes on an opposite side to that side of the discharge lamps which is connected to the module are driven by voltage waveforms different in phase by 180 degrees from each other, wherein an input terminal of an opposite phase of the surface light source system is connected to an inverter circuit having outputs of opposite phases via a single shunt transformer in such a way as to cancel out magnetic fluxes generated by currents respectively flowing in windings of the shunt transformer, whereby the resonance frequency of the inverter circuit having outputs of opposite phases is matched to balance the outputs.
    • 公开了一种用于表面光源的放电灯的低成本平行照明系统,其减少了不均匀的亮度和静态噪声,并且满足了各个冷阴极荧光灯的灯电流应该是均匀和稳定的要求。 在具有多个放电灯的表面光源系统中,存在并联点燃放电灯的模块,并且其连接到模块的放电灯的与该侧的相反侧的输入端子和电极由电压波形驱动 不同的相位彼此相差180度,其中表面光源系统的相反相位的输入端子通过单个并联变压器连接到具有相反相位的输出的逆变器电路,以抵消磁通量 由分流在并联变压器的绕组中流动的电流产生,从而匹配具有相反相位的输出的逆变器电路的谐振频率以平衡输出。
    • 93. 发明公开
    • Electronic ballast for fluorescent lamp using silicon-controlled phase-luminosity modulator for adjusting luminosity
    • ElektronischesVorschaltgerätmit Phasensteuerung zum Dimmen von Leuchtstofflampen
    • EP1565042A2
    • 2005-08-17
    • EP05101127.8
    • 2005-02-15
    • Mass Technology (H.K.) Ltd.
    • FOO, Onn Fah, c/o Mass Technology (H.K) Ltd.
    • H05B41/282H05B41/392
    • H05B41/3925
    • The present invention relates to an electr onic ballast of a fluorescent lamp using a silicon-controlled phase-luminosity modulator for adjusting luminosity. The ballast comprises: (a) a filter and rectification circuit having an output port and connected to a municipal alternating current power supply; (b) a frequency-control and switch circuit having an output port; including an integrated circuit (IC) for controlling frequency and producing switch -triggering signals; (c) an output circuit, having an input port connected to the output port of the frequency -control and switch circuit; (d) light -modulating signal processing circuit, connected to the output port of filter and rectification circuit and the input port of frequency control and switch circuit; (e) direct -current high voltage stabilization circuit, with an input port connected to the output port of filter and rectification circuit, an output port connected to the input port of frequency control and switch circuit, and feedback port connected with the output circuit. This electronic ballast requires only three simple circuits and few components. Thus, it can be manufactured at a lower cost with a smaller dimension. With its stable capacity of light modulating, the ballast of the present invention can be applied easily and widely, especially in the integrated and compact fluorescent lamps.
    • 本发明涉及一种荧光灯的电子镇流器,该荧光灯使用硅控制相位调制器来调节亮度。 镇流器包括:(a)具有输出端口并连接到市政交流电源的滤波器和整流电路; (b)具有输出端口的频率控制和开关电路; 包括用于控制频率并产生开关 - 触发信号的集成电路(IC); (c)输出电路,具有连接到频率控制和开关电路的输出端口的输入端口; (d)光调制信号处理电路,连接到滤波器和整流电路的输出端口和频率控制和开关电路的输入端口; (e)直流电压高压稳定电路,输入端口连接到滤波器和整流电路的输出端口,连接到频率控制和开关电路的输入端口的输出端口以及与输出电路连接的反馈端口。 该电子镇流器只需要三个简单的电路和很少的组件。 因此,可以以较小的尺寸制造成本较低的成本。 通过其稳定的光调制能力,本发明的镇流器可以容易且广泛地应用,特别是在集成紧凑的荧光灯中。
    • 96. 发明公开
    • DRIVER FOR A GAS DISCHARGE LAMP
    • 气体放电灯驱动器
    • EP1535497A1
    • 2005-06-01
    • EP03766537.9
    • 2003-07-10
    • Koninklijke Philips Electronics N.V.
    • VAN CASTEREN, Dolf, H., J.COUWENBERG, Winston, D.
    • H05B41/282H02M3/155H02M3/335
    • H02M7/48H02M2001/007H05B41/282Y02B20/183
    • A two-stage electronic ballast (301; 401) for driving a gas discharge lamp comprises:- a half-bridge commutating forward (HBCF) stage (250) comprising a series arrangement of a first buffer capacitor (251) and a second buffer capacitor (252) connected between two bridge input terminals (261, 262);- and a double flyback converter stage (310; 410) comprising an inductive energy storage buffer (320; 420) having at least one input circuit (330) suitable for receiving a rectified AC mains input voltage, the buffer further having at least two output circuits (340, 350), each output circuit being coupled to a respective buffer capacitor (251, 252) of said half-bridge commutating forward (HBCF) stage (250) for individually charging said buffer capacitors (251, 252).
    • 一种用于驱动气体放电灯的两级电子镇流器(301; 401),包括: - 半桥整流正向(HBCF)级(250),其包括串联布置的第一缓冲电容器(251)和第二缓冲电容器 (252);以及包括电感能量存储缓冲器(320; 420)的双反激转换器级(310; 410),所述电感能量存储缓冲器具有至少一个输入电路(330),所述输入电路适于接收 经整流的AC市电输入电压,所述缓冲器还具有至少两个输出电路(340,350),每个输出电路耦合到所述半桥正向(HBCF)级(250)的相应缓冲电容器(251,252) )用于为所述缓冲电容器(251,252)单独充电。
    • 97. 发明公开
    • POWER SUPPLY SYSTEM FOR LIQUID CRYSTAL MONITORS
    • LeistungsversorgungseinrichtungfürFlüssigkristallanzeigemonitoren
    • EP1507447A3
    • 2005-05-25
    • EP04077247.7
    • 2004-08-06
    • Global display Solutions S.p.A.
    • Ongaro, Andrea
    • H05B41/282H05B41/392
    • H05B41/2822H05B41/3922
    • A power supply system for liquid crystal monitors includes a first DC/AC converter (FBS, HBS) operating at predetermined frequency and duty-cycles and being fed by a second DC/DC converter (FC) which regulates the circuit voltage. The feeding system can feed all the fluorescent lamps (L, L1, LN) in the monitor through a bus connection which transmits the output sinusoidal voltage (SG1, SG2, SG3) from the first DC/AC converter (FBS, HBS) to the primary windings of a plurality of parallel connected piezoelectric transformers (PT, PT1, PT2, PTN, PT2N) which are connected with the fluorescent lamps (L, L1, LN).
    • 用于液晶监视器的电源系统包括以预定频率和占空比操作并由调节电路电压的第二DC / DC转换器(FC)馈电的第一DC / AC转换器(FBS,HBS)。 馈送系统可以通过将输出正弦电压(SG1,SG2,SG3)从第一DC / AC转换器(FBS,HBS)发送到总线连接的总线连接到监视器中的所有荧光灯(L,L1,LN) 与荧光灯(L,L1,LN)连接的多个并联的压电变压器(PT,PT1,PT2,PTN,PT2N)的初级绕组。
    • 99. 发明公开
    • High power-factor electronic reactor for discharge lamps
    • 用于放电灯的高功率因数电子电抗器
    • EP1345311A3
    • 2005-04-13
    • EP03005300.3
    • 2003-03-11
    • VLM S.p.A.
    • Piacente, LuigiDal Santo, Ivan
    • H05B41/24H05B41/282
    • H05B41/2828H05B41/28
    • An electronic device for powering a fluorescent lamp (16) starting from a sinusoidal alternating voltage comprises a whole-bridge rectifier (12) which rectifies the alternating voltage, a circuit (13) for processing the rectified voltage connected in parallel to the output of the rectifier (12) and a half-bridge inverter (14) with an output (D) for high frequency powering of the lamp (16). The processing circuit has a direct voltage output (A-C) at the ends of a bulk capacitor (CB) connected in parallel to the output of the rectifier (12) through a first diode (DP). A resonant network (17) to which is connected the lamp (16) is connected between the output (D) of the half-bridge inverter (14) and an intermediate point (B) of a series of two capacitors (CP1,CP2) connected in parallel to the output of the rectifier (12). The circuit allows obtaining with simplicity a power factor near unity and a limited lamp current crest factor.
    • 用于从正弦交流电压开始给荧光灯(16)供电的电子设备包括整流交流电压的全桥整流器(12),用于处理整流电压的电路(13),所述整流电压并联到 整流器(12)和具有输出(D)的半桥逆变器(14),用于灯(16)的高频供电。 处理电路在通过第一二极管(DP)与整流器(12)的输出并联连接的大容量电容器(CB)的端部具有直流电压输出(A-C)。 连接灯(16)的谐振网络(17)连接在半桥逆变器(14)的输出端(D)和一系列两个电容器(CP1,CP2)的中间点(B)之间, 并联连接到整流器(12)的输出端。 该电路允许简单地获得接近1的功率因数和有限的灯电流波峰因数。