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    • 1. 发明授权
    • Current-preheat electronic ballast and resonant capacitor adjusting circuit thereof
    • 电流预热电子镇流器和谐振电容调节电路
    • US08760059B2
    • 2014-06-24
    • US13437609
    • 2012-04-02
    • Ching-Ho ChouYung-Chuan Lu
    • Ching-Ho ChouYung-Chuan Lu
    • H05B41/295H05B41/282
    • H05B41/295H05B41/2827
    • A current-preheat electronic ballast includes an AC-to-DC converter, a controlling unit, an auxiliary voltage generator, and an inverter. The inverter is connected with the DC bus for converting a high DC voltage into an AC output voltage and generating a resonant current and a lamp filament current to a lamp group. The inverter includes a resonant circuit and a resonant capacitor adjusting circuit. The resonant circuit provides electric energy required to preheat the lamp group. The resonant capacitor adjusting circuit judges whether the inverter is enabled according to the detecting element. After the inverter has been enabled for a delayed time, two high-voltage switching terminals of the resonant capacitor adjusting circuit are correspondingly conducted or shut off, so that an equivalent resonant capacitance value of the resonant circuit is changed and a voltage drop across two ends of a lamp filament of the lamp group is changed.
    • 电流预热电子镇流器包括AC-DC转换器,控制单元,辅助电压发生器和逆变器。 逆变器与直流母线连接,用于将高直流电压转换为交流输出电压,并向灯组产生谐振电流和灯丝电流。 逆变器包括谐振电路和谐振电容器调节电路。 谐振电路提供预热灯组所需的电能。 谐振电容调节电路根据检测元件判断逆变器是否使能。 在逆变器使能了延迟时间后,谐振电容调节电路的两个高电压开关端子相应地导通或截止,使得谐振电路的等效谐振电容值发生变化,两端电压降 改变灯组的灯丝。
    • 2. 发明申请
    • CURRENT-PREHEAT ELECTRONIC BALLAST AND RESONANT CAPACITOR ADJUSTING CIRCUIT THEREOF
    • 电流预制电容器和谐振电容调节电路
    • US20130076244A1
    • 2013-03-28
    • US13437609
    • 2012-04-02
    • Ching-Ho ChouYung-Chuan Lu
    • Ching-Ho ChouYung-Chuan Lu
    • H05B41/295
    • H05B41/295H05B41/2827
    • A current-preheat electronic ballast includes an AC-to-DC converter, a controlling unit, an auxiliary voltage generator, and an inverter. The inverter is connected with the DC bus for converting a high DC voltage into an AC output voltage and generating a resonant current and a lamp filament current to a lamp group. The inverter includes a resonant circuit and a resonant capacitor adjusting circuit. The resonant circuit provides electric energy required to preheat the lamp group. The resonant capacitor adjusting circuit judges whether the inverter is enabled according to the detecting element. After the inverter has been enabled for a delayed time, two high-voltage switching terminals of the resonant capacitor adjusting circuit are correspondingly conducted or shut off, so that an equivalent resonant capacitance value of the resonant circuit is changed and a voltage drop across two ends of a lamp filament of the lamp group is changed.
    • 电流预热电子镇流器包括AC-DC转换器,控制单元,辅助电压发生器和逆变器。 逆变器与直流母线连接,用于将高直流电压转换为交流输出电压,并向灯组产生谐振电流和灯丝电流。 逆变器包括谐振电路和谐振电容器调节电路。 谐振电路提供预热灯组所需的电能。 谐振电容调节电路根据检测元件判断逆变器是否使能。 在逆变器使能了延迟时间后,谐振电容调节电路的两个高电压开关端子相应地导通或截止,使得谐振电路的等效谐振电容值发生变化,两端电压降 改变灯组的灯丝。
    • 4. 发明授权
    • Multi-output electronic ballast
    • 多输出电子镇流器
    • US09426869B2
    • 2016-08-23
    • US13231337
    • 2011-09-13
    • Ching-Ho ChouYung-Chuan Lu
    • Ching-Ho ChouYung-Chuan Lu
    • H05B37/02H05B41/28H05B41/295
    • H05B41/28H05B41/295
    • A multi-output electronic ballast is disclosed. The multi-output electronic ballast is used to drive a plurality of lamp assemblies and includes an AC/DC converter, a first inverter, a second inverter, an auxiliary voltage generator, and a control circuit. The AC/DC converter converts an AC input voltage to a high DC voltage. The first inverter converts the high DC input voltage to a first AC voltage selectively. The second inverter converts the high DC voltage to a second AC voltage. The auxiliary voltage generator generates an auxiliary voltage. The control circuit receives the auxiliary voltage generating circuit and outputs a control signal to the first inverter according to the switching operation of a first external switch. When the control signal is transmitted to the first inverter, the first inverter comes into operation and converts the high DC voltage to the first AC voltage.
    • 公开了一种多输出电子镇流器。 多输出电子镇流器用于驱动多个灯组件,包括AC / DC转换器,第一逆变器,第二逆变器,辅助电压发生器和控制电路。 AC / DC转换器将交流输入电压转换为高直流电压。 第一个逆变器将高直流输入电压选择性地转换成第一交流电压。 第二个逆变器将高直流电压转换成第二交流电压。 辅助电压发生器产生辅助电压。 控制电路接收辅助电压产生电路,并根据第一外部开关的切换操作向第一反相器输出控制信号。 当控制信号被发送到第一反相器时,第一反相器进入工作状态并将高直流电压转换成第一交流电压。
    • 5. 发明申请
    • MULTI-OUTPUT ELECTRONIC BALLAST
    • 多输出电子镇流器
    • US20120248980A1
    • 2012-10-04
    • US13231337
    • 2011-09-13
    • Ching-Ho ChouYung-Chuan Lu
    • Ching-Ho ChouYung-Chuan Lu
    • H05B41/298
    • H05B41/28H05B41/295
    • A multi-output electronic ballast is disclosed. The multi-output electronic ballast is used to drive a plurality of lamp assemblies and includes an AC/DC converter, a first inverter, a second inverter, an auxiliary voltage generator, and a control circuit. The AC/DC converter converts an AC input voltage to a high DC voltage. The first inverter converts the high DC input voltage to a first AC voltage selectively. The second inverter converts the high DC voltage to a second AC voltage. The auxiliary voltage generator generates an auxiliary voltage. The control circuit receives the auxiliary voltage generating circuit and outputs a control signal to the first inverter according to the switching operation of a first external switch. When the control signal is transmitted to the first inverter, the first inverter comes into operation and converts the high DC voltage to the first AC voltage.
    • 公开了一种多输出电子镇流器。 多输出电子镇流器用于驱动多个灯组件,包括AC / DC转换器,第一逆变器,第二逆变器,辅助电压发生器和控制电路。 AC / DC转换器将交流输入电压转换为高直流电压。 第一个逆变器将高直流输入电压选择性地转换成第一交流电压。 第二个逆变器将高直流电压转换成第二交流电压。 辅助电压发生器产生辅助电压。 控制电路接收辅助电压产生电路,并根据第一外部开关的切换操作向第一反相器输出控制信号。 当控制信号被发送到第一反相器时,第一反相器进入工作状态并将高直流电压转换成第一交流电压。