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1. 发明申请

US20080084168A1 DIMMABLE, HIGH POWER FACTOR BALLAST FOR GAS DISCHARGE LAMPS 失效
标题翻译：用于气体放电灯的二极管，高功率因数电池
公开(公告)号：US20080084168A1
公开(公告)日：2008-04-10
申请号：US11867935
申请日：2007-10-05
申请人： Ning Lu , Jun Liu , Venugopal Ashokkumar
发明人： Ning Lu , Jun Liu , Venugopal Ashokkumar
IPC分类号： H05B41/14 , H05B41/24
CPC分类号： H05B41/282 , H05B41/2986 , H05B41/392 , Y02B20/183 , Y02B20/19
摘要： A ballast for operating a compact fluorescent lamp includes a power factor correction circuit and an energy storage capacitor coupled to the output thereof. The power factor correction circuit is configured to draw current from an AC power source during substantially more than half of the cycle of the input AC voltage waveform; i.e., when operated such that full power is supplied to the lamp. Energy transfer elements in the power factor correction circuit extract energy from the AC power source via an input rectifier, even when the peak voltage of the AC voltage waveform is substantially lower than the voltage of the energy storage capacitor, and transfer the energy to the energy storage capacitor a sufficient number of times during for each cycle of the input AC voltage waveform (e.g., at least 500 times for each full cycle of a 60 Hz input AC voltage waveform for a lamp operated at a frequency of 30 kHz), such that the energy storage capacitor remains substantially fully charged during steady-state ballast operation. The power factor circuit additionally provides for improved dimming capability, specifically, dimming the discharge to low levels, while maintaining steady, non-flickering operation.
摘要翻译：用于操作紧凑型荧光灯的镇流器包括功率因数校正电路和耦合到其输出的储能电容器。功率因数校正电路被配置为在输入AC电压波形的大约一半的周期内从AC电源抽取电流; 即当操作使得全部功率被供应到灯时。功率因数校正电路中的能量传递元件即使当交流电压波形的峰值电压基本上低于储能电容器的电压，也能够将能量转移到能量时，通过输入整流器从交流电源提取能量存储电容器在输入AC电压波形的每个周期期间的足够次数（例如，对于以30kHz的频率操作的灯的60Hz输入AC电压波形的每个完整周期的至少500次），使得在稳态镇流器操作期间，储能电容器基本上完全充电。功率因数电路还提供改进的调光能力，特别是将放电调光到低电平，同时保持稳定的非闪烁操作。

2. 发明授权

US07750580B2 Dimmable, high power factor ballast for gas discharge lamps 失效
标题翻译：用于气体放电灯的可调光，高功率因数镇流器
公开(公告)号：US07750580B2
公开(公告)日：2010-07-06
申请号：US11867935
申请日：2007-10-05
申请人： Ning Lu , Jun Liu , Venugopal Ashokkumar
发明人： Ning Lu , Jun Liu , Venugopal Ashokkumar
IPC分类号： H05B37/00 , H05B37/02
CPC分类号： H05B41/282 , H05B41/2986 , H05B41/392 , Y02B20/183 , Y02B20/19
摘要： A ballast for operating a compact fluorescent lamp includes a power factor correction circuit and an energy storage capacitor coupled to the output thereof. The power factor correction circuit is configured to draw current from an AC power source during substantially more than half of the cycle of the input AC voltage waveform; i.e., when operated such that full power is supplied to the lamp. Energy transfer elements in the power factor correction circuit extract energy from the AC power source via an input rectifier, even when the peak voltage of the AC voltage waveform is substantially lower than the voltage of the energy storage capacitor, and transfer the energy to the energy storage capacitor a sufficient number of times during for each cycle of the input AC voltage waveform (e.g., at least 500 times for each full cycle of a 60 Hz input AC voltage waveform for a lamp operated at a frequency of 30 kHz), such that the energy storage capacitor remains substantially fully charged during steady-state ballast operation. The power factor circuit additionally provides for improved dimming capability, specifically, dimming the discharge to low levels, while maintaining steady, non-flickering operation.
摘要翻译：用于操作紧凑型荧光灯的镇流器包括功率因数校正电路和耦合到其输出的储能电容器。功率因数校正电路被配置为在输入AC电压波形的大约一半的周期内从AC电源抽取电流; 即当操作使得全部功率被供应到灯时。功率因数校正电路中的能量转移元件即使当交流电压波形的峰值电压基本上低于储能电容器的电压，也能够将能量转移到能量时，通过输入整流器从交流电源提取能量存储电容器在输入AC电压波形的每个周期期间的足够次数（例如，对于以30kHz的频率操作的灯的60Hz输入AC电压波形的每个完整周期的至少500次），使得在稳态镇流器操作期间，储能电容器基本上完全充电。功率因数电路还提供改进的调光能力，特别是将放电调光到低电平，同时保持稳定的非闪烁操作。

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