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1. 发明授权

US5068576A Remote control of fluorescent lamp ballast using power flow interruption coding with means to maintain filament voltage substantially constant as the lamp voltage decreases 失效
标题翻译：使用功率流中断编码的荧光灯镇流器的远程控制，以保持灯电压基本上恒定，随着灯电压降低
公开(公告)号：US5068576A
公开(公告)日：1991-11-26
申请号：US565711
申请日：1990-08-13
申请人： Feng-Kang Hu , Chung M. Lau , Kevin Yang , Joshau S. Zhu , Peter S. Shen , Thomas C. Jednacz
发明人： Feng-Kang Hu , Chung M. Lau , Kevin Yang , Joshau S. Zhu , Peter S. Shen , Thomas C. Jednacz
IPC分类号： H02M5/257 , H05B41/36 , H05B41/392
CPC分类号： H02M5/2576 , H05B41/36 , H05B41/3927 , Y10S315/04
摘要： A dimming ballast system wherein the light output of the lamp is controlled by a remote source. The ballast output voltage is regulated by a voltage control feedback loop, the dimming function being achieved by varying the set point of the control loop. The remote control signal, coded by interrupting the current flow to the ballast for a short period, is processed digitally by a microcomputer which generates information to vary the control set point. Circuit means are provided to control the filament voltage of the fluorescent lamps such that as the lamps are dimmed down, the filament voltage is maintained or slightly increased, thus prolonging lamp life and stabilizing the lamp light output.
摘要翻译：调光镇流器系统，其中灯的光输出由远程源控制。镇流器输出电压由电压控制反馈回路调节，调光功能通过改变控制回路的设定点来实现。通过中断流入镇流器的电流短时间编码的遥控信号由产生信息以改变控制设定点的微计算机数字地处理。提供电路装置以控制荧光灯的灯丝电压，使得当灯被调暗时，灯丝电压保持或略微增加，从而延长灯的寿命并稳定灯的光输出。

2. 发明授权

US06707260B2 Circuit arrangement including DC-AC converter having a dependable start circuit 失效
标题翻译：包括具有可靠启动电路的DC-AC转换器的电路装置
公开(公告)号：US06707260B2
公开(公告)日：2004-03-16
申请号：US10255846
申请日：2002-09-26
申请人： Nicolaas Hendrik Mario Pol , Feng-Kang Hu , Yimin Chen
发明人： Nicolaas Hendrik Mario Pol , Feng-Kang Hu , Yimin Chen
IPC分类号： H05B3702
CPC分类号： H02M1/36 , H02M7/53832 , H05B41/2825 , Y02B20/185
摘要： A self-oscillating bridge circuit comprises a start circuit for rendering one of the switches conductive for the first time at the start of operation. The start circuit is configured in such a way that it does not influence the switching of the bridge switches during stationary operation.
摘要翻译：自振荡桥电路包括用于使开关中的一个开关首次导通的启动电路。启动电路被配置成在静止操作期间不影响桥式开关的切换。

3. 发明授权

US06577077B2 Circuit arrangement 失效
公开(公告)号：US06577077B2
公开(公告)日：2003-06-10
申请号：US10011987
申请日：2001-12-04
申请人： Feng-Kang Hu , Zhenggang Yang
发明人： Feng-Kang Hu , Zhenggang Yang
IPC分类号： G05F100
CPC分类号： H05B41/282 , H05B41/28 , Y02B20/183
摘要： In an electronic ballast for operating a discharge lamp at a high frequency, a single feedback and a double pump feedback are implemented in a combined way. The resulting electronic ballast combines the advantageous of a simple topology with favorable properties with respect to power factor, THD, efficacy, crest factor of the lamp current and EMI restrain.

4. 发明授权

US5107184A Remote control of fluorescent lamp ballast using power flow interruption coding with means to maintain filament voltage substantially constant as the lamp voltage decreases 失效
标题翻译：使用功率流中断编码的荧光灯镇流器的远程控制，以保持灯电压基本上恒定，随着灯电压降低
公开(公告)号：US5107184A
公开(公告)日：1992-04-21
申请号：US565688
申请日：1990-08-13
申请人： Feng-Kang Hu , Chung M. Lau , Kevin Yang , Joshua S. Zhu , Peter S. Shen , Thomas C. Jednacz
发明人： Feng-Kang Hu , Chung M. Lau , Kevin Yang , Joshua S. Zhu , Peter S. Shen , Thomas C. Jednacz
IPC分类号： H02J13/00 , H05B37/02 , H05B41/36 , H05B41/392
CPC分类号： H05B41/3927 , H02J13/0048 , H05B37/0263 , H05B41/36 , Y02B70/3283 , Y02E60/783 , Y04S20/246 , Y04S40/123 , Y10S315/04 , Y10T307/477
摘要： A dimming ballast system wherein the light output of the lamp is controlled by a remote source. The ballast output voltage is regulated by a voltage control feedback loop, the dimming function being achieved by varying the set point of the control loop. The remote control signal, coded by interrupting the current flow to the ballast for a short period, is processed digitally by a microcomputer which generates information to vary the control set point. Circuit means are provided to control the filament voltage of the fluorescent lamps such that as the lamps are dimmed down, the filament voltage is maintained or slightly increased, thus prolonging lamp life and stabilizing the lamp light output.
摘要翻译：调光镇流器系统，其中灯的光输出由远程源控制。镇流器输出电压由电压控制反馈回路调节，调光功能通过改变控制回路的设定点来实现。通过中断流入镇流器的电流短时间编码的遥控信号由产生信息以改变控制设定点的微计算机数字地处理。提供电路装置以控制荧光灯的灯丝电压，使得当灯被调暗时，灯丝电压保持或略微增加，从而延长灯的寿命并稳定灯的光输出。

5. 发明授权

US5808422A Lamp ballast with lamp rectification detection circuitry 失效
标题翻译：灯镇流器带灯整流检测电路
公开(公告)号：US5808422A
公开(公告)日：1998-09-15
申请号：US645545
申请日：1996-05-10
申请人： Sreeraman Venkitasubrahmanian , Clint Mason , Yongping Xia , Feng-Kang Hu , Jaap Schlejen
发明人： Sreeraman Venkitasubrahmanian , Clint Mason , Yongping Xia , Feng-Kang Hu , Jaap Schlejen
IPC分类号： H05B41/24 , H05B41/298 , H05B37/02
CPC分类号： H05B41/2985
摘要： A ballast for a gas discharge lamp includes a detection circuit which detects an operating state of the lamp in which the lamp current for the column discharge of one polarity is different from the lamp current for the column discharge of the other polarity by detecting the DC component of the voltage across the discharge lamp. The detection circuit includes (i) a device coupled such that a DC voltage is imposed there across when the lamp current is different for the column discharge according to one polarity verses the other polarity, and (ii) a sensing circuit for sensing the DC voltage across the device. The device may be a capacitive device, and in a particularly inexpensive implementation, is a DC blocking capacitor or a ballast capacitor. The sense circuit senses when the DC voltage across the device exceeds a threshold value, which may corresponds to fully-rectified state of the lamp or more favorably, to a lesser state of imbalance. In another embodiment, the variance in the DC voltage across the lamp is detected at the midpoint of a bridge inverter. A control circuit changes the output of the ballasting circuit when the DC voltage exceeds the threshold value to turn off the lamp or to recurrently cycle the lamp on and off to signal the user that the lamp needs to be changed.
摘要翻译：用于气体放电灯的镇流器包括检测电路，该检测电路通过检测DC分量来检测一极性的列排出的灯电流与用于另一极性的列放电的灯电流不同的灯的工作状态的放电灯两端的电压。检测电路包括（i）耦合的器件，使得当灯电流根据一种极性与另一极性相反的列电压不同时，直流电压被施加到该电极上，以及（ii）用于感测直流电压的感测电路跨设备。该装置可以是电容性装置，并且在特别廉价的实施方式中，是直流阻塞电容器或镇流电容器。感测电路感测器件上的直流电压何时超过阈值，其可以对应于灯的完全整流状态或更有利地达到较小的不平衡状态。在另一个实施例中，在桥式逆变器的中点处检测灯两端的直流电压的变化。当直流电压超过阈值时，控制电路改变镇流电路的输出，以关闭灯泡或打开或关闭灯泡，以便向用户发出指示灯需要改变的信号。

6. 发明授权

US5055746A Remote control of fluorescent lamp ballast using power flow interruption coding with means to maintain filament voltage substantially constant as the lamp voltage decreases 失效
公开(公告)号：US5055746A
公开(公告)日：1991-10-08
申请号：US565689
申请日：1990-08-13
申请人： Feng-Kang Hu , Chung M. Lau , Kevin Yang , Joshua S. Zhu , Peter S. Shen , Thomas C. Jednacz
发明人： Feng-Kang Hu , Chung M. Lau , Kevin Yang , Joshua S. Zhu , Peter S. Shen , Thomas C. Jednacz
IPC分类号： H02J13/00 , H05B41/36 , H05B41/392
CPC分类号： H05B41/36 , H02J13/0048 , H05B41/3927 , Y02E60/783 , Y04S40/123 , Y10S315/04 , Y10T307/477
摘要： A dimming ballast system wherein the light output of the lamp is controlled by a remote source. The ballast output voltage is regulated by a voltage control feedback loop, the dimming function being achieved by varying the set point of the control loop. The remote control signal, coded by interrupting the current flow to the ballast for a short period, is processed digitally by a microcomputer which generates information to vary the control set point. Circuit means are provided to control the filament voltage of the fluorescent lamps such that as the lamps are dimmed down, the filament voltage is maintained or slightly increased, thus prolonging lamp life and stabilizing the lamp light output.

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