专利快速检索-快速检索全球专利，免费商用专利数据库-IPRDB

1. 发明授权

US5923126A Fluorescent lamp electronic ballast with rapid voltage turn-on after preheating 失效
标题翻译：荧光灯电子镇流器预热后快速启动电压
公开(公告)号：US5923126A
公开(公告)日：1999-07-13
申请号：US708005
申请日：1996-08-09
申请人： Kevin Yang , Chien F. Chao , John Yu , Albert Peng , Feng Hu
发明人： Kevin Yang , Chien F. Chao , John Yu , Albert Peng , Feng Hu
IPC分类号： H05B41/295 , H05B37/02
CPC分类号： H05B41/295
摘要： An electronic ballast for a fluorescent lamp includes a delay triggered circuit which, upon expiration of a predetermined period during which the lamp filaments, constituting opposite electrodes of the lamp, are preheated, applies high frequency operating voltage across the opposite electrodes of the lamp beginning with a transition from a condition of no voltage to a condition of full rated voltage which occurs within one cycle of the high frequency voltage. The sharp transition from zero "glow current" to full "arc current" at the end of the preheating period has been found to increase the life of lamps in the number of on-off starts, particularly with respect to lamps of poor quality. The rapid transition is possible because the ballast uses the same inverter and transformer for supplying preheating and operating voltages. The operating voltage is applied between the opposite electrodes of the lamp via an electronic bi-directional switch, controlled by a preheating delay RC timing circuit.
摘要翻译：用于荧光灯的电子镇流器包括延迟触发电路，在预定时间期间，构成灯的相对电极的灯丝被预热，在从灯开始的相对电极上施加高频工作电压，从无电压状态到在高频电压的一个周期内发生的全额定电压的条件的转变。已经发现在预热期结束时从零“辉光电流”到完全“电弧电流”的急剧转变，以增加开关次数开始时灯的寿命，特别是对质量差的灯而言。快速转换是可能的，因为镇流器使用相同的逆变器和变压器来提供预热和工作电压。工作电压通过电子双向开关施加在灯的相对电极之间，由预热延迟RC定时电路控制。

IPRDB

热门服务

关于我们

友情链接

联系方式