公开(公告)号：US5049790A

公开(公告)日：1991-09-17

申请号：US410920

申请日：1989-09-22

申请人： Michael Herfurth ,  Ali-Ihsan Soeylemez

发明人： Michael Herfurth ,  Ali-Ihsan Soeylemez

IPC分类号： H05B41/24 ,  H05B41/298

CPC分类号： H05B41/382 ,  H05B41/2981 ,  Y02B20/204 ,  Y10S315/04

摘要： A method and apparatus for operating at least one gas discharge lamp includes supplying a gas discharge lamp with high-frequency alternating voltage from an externally controlled lamp generator having an operating frequency being variable for dimming the gas discharge lamp. The state of the gas discharge lamp is monitored. A preheating phase with an ensuing starting phase are provided for firing the gas discharge lamp. The operating frequency of the lamp generator during the preheating phase is adjusted to be greater than a rated frequency in rated operation. The operating frequency at the beginning of the starting phase is reduced until the gas discharge lamp has attained a predetermined state and the operating frequency is subsequently maintained at least at an instantaneous value thereof until the gas discharge lamp fires. The operating frequency at the end of the starting phase is reduced to the rated frequency, thereby initiating rated operation. The operating frequency is varied for dimming in an ensuing dimming operation.

摘要翻译： 一种用于操作至少一个气体放电灯的方法和装置包括从具有可变的工作频率的外部控制的灯发生器向气体放电灯提供高频交流电压，以使气体放电灯变暗。 监视气体放电灯的状态。 提供具有随后的起始阶段的预热阶段用于点燃气体放电灯。 在预热阶段，灯发电机的工作频率在额定运行中调整为大于额定频率。 启动阶段开始时的工作频率降低，直到气体放电灯达到预定状态，并且操作频率随后至少保持在其瞬时值，直到气体放电灯点火。 启动阶段结束时的工作频率降低到额定频率，从而启动额定运行。 在随后的调光操作中，操作频率变化以进行调光。