公开(公告)号：US20100060186A1

公开(公告)日：2010-03-11

申请号：US12205385

申请日：2008-09-05

申请人： Mark S. Taipale ,  Robert C. Newman, JR. ,  Scott E. Rhodes

发明人： Mark S. Taipale ,  Robert C. Newman, JR. ,  Scott E. Rhodes

IPC分类号： H05B41/36

CPC分类号： H05B41/2822

摘要： An electronic ballast for driving a gas discharge lamp comprises a measurement circuit for measuring a lamp current flowing through the lamp and a lamp voltage produced across the lamp. The ballast comprises a first winding magnetically coupled to a main transformer of an inverter circuit, and a second winding magnetically coupled to a resonant inductor of a resonant tank circuit. The first and second windings are coupled in series electrical connection to generate a voltage representative of the magnitude of the lamp voltage. The ballast further comprises a current transformer having primary windings coupled in series with the electrodes of the lamp. The measurement circuit integrates the current conducted through secondary windings of the current transformer only during every other half-cycle of the lamp voltage to generate a control signal representative of the magnitude of the lamp current that is in-phase with the lamp voltage.

摘要翻译： 用于驱动气体放电灯的电子镇流器包括用于测量流过灯的灯电流的测量电路和灯两端产生的灯电压。 镇流器包括磁耦合到逆变器电路的主变压器的第一绕组和与谐振回路的谐振电感器磁耦合的第二绕组。 第一和第二绕组串联电连接以产生代表灯电压大小的电压。 镇流器还包括具有与灯的电极串联耦合的初级绕组的电流互感器。 测量电路仅在灯电压的每隔一个半周期内对电流互感器的次级绕组传导的电流进行积分，以产生表示与灯电压同相的灯电流的大小的控制信号。

公开(公告)号：US08049432B2

公开(公告)日：2011-11-01

申请号：US12205385

申请日：2008-09-05

申请人： Mark S. Taipale ,  Robert C. Newman, Jr. ,  Scott E. Rhodes

发明人： Mark S. Taipale ,  Robert C. Newman, Jr. ,  Scott E. Rhodes

IPC分类号： H05B41/24 ,  H05B37/02

CPC分类号： H05B41/2822

摘要： An electronic ballast for driving a gas discharge lamp comprises a measurement circuit for measuring a lamp current flowing through the lamp and a lamp voltage produced across the lamp. The ballast comprises a first winding magnetically coupled to a main transformer of an inverter circuit, and a second winding magnetically coupled to a resonant inductor of a resonant tank circuit. The first and second windings are coupled in series electrical connection to generate a voltage representative of the magnitude of the lamp voltage. The ballast further comprises a current transformer having primary windings coupled in series with the electrodes of the lamp. The measurement circuit integrates the current conducted through secondary windings of the current transformer only during every other half-cycle of the lamp voltage to generate a control signal representative of the magnitude of the lamp current that is in-phase with the lamp voltage.

摘要翻译： 用于驱动气体放电灯的电子镇流器包括用于测量流过灯的灯电流的测量电路和灯两端产生的灯电压。 镇流器包括磁耦合到逆变器电路的主变压器的第一绕组和与谐振回路的谐振电感器磁耦合的第二绕组。 第一和第二绕组串联电连接以产生代表灯电压大小的电压。 镇流器还包括具有与灯的电极串联耦合的初级绕组的电流互感器。 测量电路仅在灯电压的每隔一个半周期内对电流互感器的次级绕组传导的电流进行积分，以产生表示与灯电压同相的灯电流的大小的控制信号。