公开(公告)号：US06922023B2

公开(公告)日：2005-07-26

申请号：US10607100

申请日：2003-06-25

申请人： Huang-Chang Hsu ,  Ching-Chang Hsieh ,  Chao-Jung Lin ,  Cheng-Hsiu Lu

发明人： Huang-Chang Hsu ,  Ching-Chang Hsieh ,  Chao-Jung Lin ,  Cheng-Hsiu Lu

IPC分类号： H05B41/24 ,  H05B41/282 ,  H05B37/02

CPC分类号： H05B41/245 ,  H05B41/2822

摘要： An inverter for driving multiple discharge lamps. The inverter has a transformer for driving a first discharge lamp and a second discharge lamp. The inverter also includes a first balancing circuit connected in series with the first discharge lamp and a second balancing circuit connected in series with the second discharge lamp. According to a matching signal, the first and the second balancing circuits adjust a first lamp current through the first discharge lamp and a second lamp current through the second discharge lamp, respectively. A comparator is provided to receive a first sensing signal from the first balancing circuit and a second sensing signal from the second balancing circuit. Comparing the first sensing signal with the second sensing signal, the comparator generates the matching signal which controls the first and the second balancing circuits to equalize the first lamp current and the second lamp current.

摘要翻译： 一种用于驱动多个放电灯的逆变器。 逆变器具有用于驱动第一放电灯和第二放电灯的变压器。 逆变器还包括与第一放电灯串联连接的第一平衡电路和与第二放电灯串联连接的第二平衡电路。 根据匹配信号，第一和第二平衡电路分别通过第一放电灯调节第一灯电流和通过第二放电灯的第二灯电流。 提供比较器以从第一平衡电路接收第一感测信号和从第二平衡电路接收第二感测信号。 比较第一感测信号和第二感测信号，比较器产生匹配信号，其控制第一和第二平衡电路以使第一灯电流和第二灯电流相等。