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1. 发明申请

WO2006117809A1 CONTROL DEVICE FOR A DISCHARGE LAMP 审中-公开
标题翻译：放电灯控制装置
公开(公告)号：WO2006117809A1
公开(公告)日：2006-11-09
申请号：PCT/IT2005/000258
申请日：2005-05-04
申请人： STMICROELECTRONICS S.R.L. , GIUSSANI, Luca , SALATI, Luca
发明人： GIUSSANI, Luca , SALATI, Luca
IPC分类号： H05B41/298
CPC分类号： H05B41/2983
摘要： The present invention refers to a driving device of a discharge lamp (10) having two cathodes. Said device comprises first means (1, 11) having a supply input voltage (Val) and suitable for providing an alternating voltage at the ends of the cathodes, second means (3) capable of monitoring a condition of each of said cathodes and suitable for measuring a first direct voltage signal (Vdc) of the waveform of the voltage of the lamp that develops when the lamp (10) approaches the ageing condition, third means (40) coupled to the second means (3) and suitable for deactivating the first means (11), fourth means (50) suitable for providing to the third means (40) a second direct voltage signal (Vdca) proportional in value to the supply voltage (Val). The third means (40) are suitable for deactivating the first means (11) when a predetermined variation of the first direct voltage signal (Vdc) occurs in relation to the second direct voltage signal (Vdca).
摘要翻译：本发明涉及具有两个阴极的放电灯（10）的驱动装置。所述装置包括具有电源输入电压（Val）并且适于在阴极端部提供交流电压的第一装置（1,11），能够监测每个阴极的状况并适合于测量当灯（10）接近老化条件时产生的灯的电压的波形的第一直流电压信号（Vdc）;耦合到第二装置（3）并适于停用第一装置（11），适于向第三装置（40）提供与电源电压（Val）成比例的第二直流电压信号（Vdca）的第四装置（50）。当相对于第二直流电压信号（Vdca）发生第一直流电压信号（Vdc）的预定变化时，第三装置（40）适于停用第一装置（11）。

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