【作者】 杨正名； 钟嫄； 罗宗南； 崔一平； 宋成杰；

【Author】 Zhengming Yang Yuan Zhong Zongnan Luo Yiping Cui Optical electronic technology Lab.,Southeast University

【机构】 东南大学光电子技术研究室；

【摘要】 <正>1概述文献普遍认为"声谐振"效应是造成HID灯高频放电不稳定的原因[1,2,3,4,5,6,7],这一论点的核心是高频放电以二倍于放电的频率使电弧气体加热膨胀并冷缩,气体的胀、缩过程产生了二倍于放电频率的压力波——声波。当该声波波长与HID灯的电弧管壳尺寸谐振时使电弧弯曲抖动,产生不稳定现象,在最低谐振频率即声波频率低到其半波长正好和管壳尺寸相等时放电不稳定现象最为严重。这时会使放电熄灭甚至电弧管炸裂。在放电不稳定时,研究者们检测到了二倍于放电频率的声波[4],但在放电稳定时并无声波出现,更多还原

【Abstract】 Arc instability of metal halide lamp operated in high frequency and the so called "acoustic resonance" theory suggested to explain this phenomena and also the irrationality of this theory are mentioned briefly. The model of ion oscillation in arc suggested to explain this phenomena is summarized and the performance of high frequency electronic ballast of low power metal halide lamp designed according to ion oscillation model operated stably are presented.更多还原