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    • 59. 发明申请
    • A BALLAST CIRCUIT
    • 镇流电路
    • WO2009056431A3
    • 2009-07-09
    • PCT/EP2008063565
    • 2008-10-09
    • OSRAM GMBHCHEN WEIHECKMANN MARKUS
    • CHEN WEIHECKMANN MARKUS
    • H05B41/298
    • H05B41/2985
    • The invention relates to a ballast circuit for running multiple fluorescent lamps of at least two fluorescent lamps, the multiple fluorescent lamps are connected in series and divided into groups of every two lamps, comprising: LC resonance circuits for igniting respective groups of the two fluorescent lamps, a DC block capacitor for conducting the electric current from the resonance capacitor to ground, wherein the ballast circuit further comprising sequence start capacitors (C3, C4) that are connected through the filaments between both LC resonance circuits when there are two fluorescent lamps, or connected from each LC resonance circuit to the connection point of the other group of lamps when there are more than two fluorescent lamps, for limiting the electric voltage generated on the respective resonance capacitor when one of the lamps is broken in a corresponding group of fluorescent lamps.
    • 本发明涉及一种用于运行至少两个荧光灯的多个荧光灯的镇流器电路,所述多个荧光灯被串联连接并且被分成每两个灯的组,包括:LC谐振电路,用于点燃两个荧光灯的相应组 DC电阻电容器,用于将电流从谐振电容器传导到地,其中镇流器电路还包括当存在两个荧光灯时通过两个LC谐振电路之间的灯丝连接的顺序启动电容器(C3,C4),或者 当存在多于两个的荧光灯时,从每个LC谐振电路连接到另一组灯的连接点,用于限制当相应的一组荧光灯中的一个灯损坏时在相应的谐振电容器上产生的电压 。