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公开(公告)号：US20080129216A1
公开(公告)日：2008-06-05
申请号：US11719006
申请日：2005-11-09
申请人： Yuhong Fang , Michael Y. Zhang , Ramakrishnan Venkatraman , Romel Panlilio , Ganesh Arun , Rohit Khetarpal
发明人： Yuhong Fang , Michael Y. Zhang , Ramakrishnan Venkatraman , Romel Panlilio , Ganesh Arun , Rohit Khetarpal
IPC分类号： H05B41/298
CPC分类号： H05B41/2988
摘要： An anti-striation circuit employs an inverter topology including a pair of electronic switches (Q, M) that are switched between a conducting state and a nonconducting state in an alternating manner to apply an asymmetrical voltage waveform across one or more lamp (LP) to thereby control a flow of an asymmetrical current waveform (iacc) through lamps (LP). To eliminate, if not minimize, visible striations in the lamp(s) (LP), the impedances of an asymmetrical driver as connected to the control inputs (B, G) of the electronic switches (Q, M) may be unequal, and/or the impedances of an asymmetrical driver as connected to the current paths (C-E, D-S) of the electronic switches (Q, M) may be unequal. Additionally, the current gains of the electronic switches (Q, M) may be unequal, and a DC current may flow through the lamp(s) (LP).
摘要翻译： 抗条纹电路采用包括一对电子开关（Q，M）的逆变器拓扑，其以交替方式在导通状态和非导通状态之间切换，以将一个或多个灯（LP）上的非对称电压波形施加到 从而通过灯（LP）控制不对称电流波形的流动（I SUB）。 为了消除灯泡（LP）中的可见条纹（如果不是最小化），连接到电子开关（Q，M）的控制输入（B，G）的不对称驱动器的阻抗可能是不相等的，并且 /或连接到电子开关（Q，M）的电流路径（CE，DS））的不对称驱动器的阻抗可能不相等。 此外，电子开关（Q，M）的电流增益可能不相等，并且DC电流可能流过灯（LP）。
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公开(公告)号：US20090224696A1
公开(公告)日：2009-09-10
申请号：US11720844
申请日：2005-12-08
IPC分类号： H05B41/36
CPC分类号： H05B41/245 , H05B41/282 , Y02B20/183
摘要： An electronic ballast with higher startup voltage includes converter with a switching circuit (40) responsive to a switching control signal (50) and operably connected to a DC bus (30); a DC controller (44) comparing a sensed DC bus voltage signal and a reference DC bus voltage signal to generate the switching control signal (50); and a startup adjustor operably connected to the DC controller (44) to adjust at least one of the sensed DC bus voltage signal and the reference DC bus voltage signal for a predetermined time at startup so that startup DC bus voltage is greater than steady state DC bus voltage.
摘要翻译： 具有较高启动电压的电子镇流器包括具有响应于开关控制信号（50）并且可操作地连接到DC总线（30）的开关电路（40）的转换器; 比较感测的直流母线电压信号和基准直流母线电压信号以产生开关控制信号的直流控制器（44）; 以及启动调节器，其可操作地连接到所述DC控制器（44），以在启动时调整所感测的直流总线电压信号和所述参考DC总线电压信号中的至少一个预定时间，使得启动DC总线电压大于稳态DC 总线电压。
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公开(公告)号：US07868559B2
公开(公告)日：2011-01-11
申请号：US11720844
申请日：2005-12-08
IPC分类号： H05B37/02
CPC分类号： H05B41/245 , H05B41/282 , Y02B20/183
摘要： An electronic ballast with higher startup voltage includes converter with a switching circuit (40) responsive to a switching control signal (50) and operably connected to a DC bus (30); a DC controller (44) comparing a sensed DC bus voltage signal and a reference DC bus voltage signal to generate the switching control signal (50); and a startup adjustor operably connected to the DC controller (44) to adjust at least one of the sensed DC bus voltage signal and the reference DC bus voltage signal for a predetermined time at startup so that startup DC bus voltage is greater than steady state DC bus voltage.
摘要翻译： 具有较高启动电压的电子镇流器包括具有响应于开关控制信号（50）并且可操作地连接到DC总线（30）的开关电路（40）的转换器; 比较感测的直流母线电压信号和基准直流母线电压信号以产生开关控制信号的直流控制器（44）; 以及启动调节器，其可操作地连接到所述DC控制器（44），以在启动时调整所感测的直流母线电压信号和所述参考DC总线电压信号中的至少一个预定时间，使得启动DC总线电压大于稳态DC 总线电压。
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公开(公告)号：US06664742B2
公开(公告)日：2003-12-16
申请号：US10043530
申请日：2002-01-11
IPC分类号： H01J724
CPC分类号： H05B41/295 , H05B41/2988
摘要： A filament cut-back circuit comprises an impedance circuit coupled in series between either an AC voltage source and a primary filament winding, or a secondary filament winding and a filament. In response to an alternating voltage from the AC voltage source when coupled in series thereto or an alternating voltage from the secondary filament winding when coupled in series thereto, the impedance circuit operates as a short circuit when the alternating voltage is at a preheat frequency and operates as an open circuit when the alternating voltage is at an operating frequency.
摘要翻译： 灯丝切回电路包括串联耦合在AC电压源和初级灯丝绕组或二次灯丝绕组和灯丝之间的阻抗电路。 当串联耦合时来自AC电压源的交流电压或来自次级线圈绕组的交流电压串联连接时，阻抗电路在交流电压处于预热频率时工作为短路，并且工作 作为交流电压处于工作频率时的开路。
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公开(公告)号：US07486031B2
公开(公告)日：2009-02-03
申请号：US10537008
申请日：2003-11-18
IPC分类号： H05B37/02
CPC分类号： H05B41/2985 , H05B41/2858 , H05B41/2988
摘要： A striation correction circuit 300 is arranged to apply a first striation correction current to the first fluorescent lamp L1 and a second striation correction current to the second fluorescent lamp L2. A first voltage appearing across the first fluorescent tube L1 due to the first striation correction current is substantially similar in magnitude but has inverted polarity with respect to a second voltage across the second fluorescent tube L2 due to the second striation correction current. Detection of an end-of-life condition of a fluorescent lamp is facilitated.
摘要翻译： 条纹校正电路300被配置为向第一荧光灯L1施加第一条纹校正电流，并向第二荧光灯L2施加第二条纹校正电流。 由于第一条纹校正电流而在第一荧光管L1上出现的第一电压在幅度上基本相似，但是由于第二条纹校正电流而相对于第二荧光管L2上的第二电压具有反相极性。 荧光灯的寿命终止状况的检测变得容易。
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公开(公告)号：US20060097666A1
公开(公告)日：2006-05-11
申请号：US10537008
申请日：2003-11-18
CPC分类号： H05B41/2985 , H05B41/2858 , H05B41/2988
摘要： A striation correction circuit 300 is arranged to apply a first striation correction current to the first fluorescent lamp L1 and a second striation correction current to the second fluorescent lamp L2. A first voltage appearing across the first fluorescent tube L1 due to the first striation correction current is substantially similar in magnitude but has inverted polarity with respect to a second voltage across the second fluorescent tube L2 due to the second striation correction current. Detection of an end-of-life condition of a fluorescent lamp is facilitated.
摘要翻译： 条纹校正电路300被布置成将第一条纹校正电流施加到第一荧光灯L 1，并且向第二荧光灯L 2施加第二条纹校正电流。 由于第一条纹校正电流，出现在第一荧光管L 1上的第一电压在幅度上基本相似，但由于第二条纹校正电流而相对于第二荧光管L 2上的第二电压具有反相极性。 荧光灯的寿命终止状态的检测变得容易。
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