公开(公告)号：US07911210B2

公开(公告)日：2011-03-22

申请号：US12392929

申请日：2009-02-25

申请人： Gye Hyun Cho ,  Jin Ho Choi ,  Sang Cheol Her

发明人： Gye Hyun Cho ,  Jin Ho Choi ,  Sang Cheol Her

IPC分类号： G01R31/00 ,  G01R31/08 ,  H05B37/02

CPC分类号： H05B41/2985 ,  G01R31/44

摘要： The present invention relates a diagnosis device for detecting an end of lamp life of a lamp, a diagnosis method, and a lamp ballast circuit using the same. The diagnosis device generates a reference lamp voltage by adding a predetermined reference voltage to a distributed voltage corresponding to a lamp voltage applied to a lamp and generates an integrated lamp voltage by integrating the reference lamp voltage. The diagnosis device compares the integrated lamp voltage with a normal range that an integrated lamp voltage has when the lamp is in a normal state.

摘要翻译： 本发明涉及一种用于检测灯的灯寿命结束的诊断装置，诊断方法和使用该灯的镇流器电路。 诊断装置通过向与灯施加的灯电压相对应的分布电压添加规定的基准电压来生成基准灯电压，并通过对基准灯电压进行积分来生成集成灯电压。 诊断装置将集成灯电压与灯处于正常状态时的集成灯电压具有的正常范围进行比较。