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    • 3. 发明授权
    • Lossless circuit for sampling of lamp voltage
    • 无电压电路用于采样灯电压
    • US07098608B2
    • 2006-08-29
    • US11004668
    • 2004-12-03
    • Qinghong YuChristopher RadzinkskiPeter ShackleJohn Jay Dernovsek
    • Qinghong YuChristopher RadzinkskiPeter ShackleJohn Jay Dernovsek
    • H05B37/02
    • H05B41/2828H05B41/2851Y02B20/186Y10S315/07
    • An electronic ballast has a resonant tank circuit that includes a tank inductor and a tank capacitor connected in series. Lossless sampling of the output voltage of the electronic ballast is achieved by monitoring the voltage across a sampling capacitor placed in series with the tank capacitor. A resistive and capacitive filter is used to filter the monitored voltage such that it can be accurately received by a microcontroller. A resistor is connected in series with the sampling capacitor to produce an open circuit output voltage control signal that is used by the microcontroller to limit the open circuit output voltage. A cable compensation circuit is utilized to minimize variations in the open circuit voltage due to the connecting and disconnecting of a cable to the ballast output terminals.
    • 电子镇流器具有谐振回路,其包括串联连接的箱式电感器和储能电容器。 电子镇流器的输出电压的无损采样通过监视与储罐电容器串联布置的采样电容器两端的电压来实现。 电阻和电容滤波器用于过滤监控的电压,使其可以由微控制器精确地接收。 电阻器与采样电容器串联连接以产生开路输出电压控制信号,由微控制器用于限制开路输出电压。 使用电缆补偿电路来最小化由于电缆连接到镇流器输出端子而导致的开路电压的变化。
    • 4. 发明授权
    • High efficiency 4-lamp instant start ballast
    • 高效4灯即时启动镇流器
    • US07132803B2
    • 2006-11-07
    • US11004605
    • 2004-12-03
    • Peter ShackleJohn Jay DernovsekBarrie DrewQinghong Yu
    • Peter ShackleJohn Jay DernovsekBarrie DrewQinghong Yu
    • H05B37/02
    • H05B41/2855Y02B20/186
    • An instant-start ballast for a multiple gas discharge lamp fixture has a single half-bridge inverter that is used to drive at least two series resonant output circuits. Each series resonant output circuit is used to drive two gas discharge lamps. A single output voltage limiting circuit is provided with a microprocessor that monitors the combined output voltages of the series resonant output circuits and uses a single voltage limiting transistor to control the output voltages of the circuits. A capacitor is associated with each gas discharge lamp socket in the fixture such that a voltage across the capacitor indicates that a lamp has been installed in the socket associated with the capacitor. The ignition sequence will only be initiated if the capacitor voltages indicate that a lamp has been installed in each socket of a fixture.
    • 用于多气体放电灯具的立即启动镇流器具有用于驱动至少两个串联谐振输出电路的单个半桥逆变器。 每个串联谐振输出电路用于驱动两个气体放电灯。 单个输出电压限制电路设置有微处理器,其监视串联谐振输出电路的组合输出电压,并使用单个限压晶体管来控制电路的输出电压。 电容器与夹具中的每个气体放电灯插座相关联,使得电容器两端的电压指示灯已经安装在与电容器相关联的插座中。 仅当电容器电压指示灯已安装在灯具的每个插座中时,点火顺序才会启动。
    • 6. 发明授权
    • Power supply circuits and methods for supplying stable power to control circuitry in an electronic ballast
    • 用于向电子镇流器中的控制电路提供稳定电源的电源电路和方法
    • US07423386B2
    • 2008-09-09
    • US11003025
    • 2004-12-02
    • Christopher RadzinskiPeter ShackleQinghong Yu
    • Christopher RadzinskiPeter ShackleQinghong Yu
    • H05B41/16G05F1/00
    • H02M1/36H02M1/4225H05B41/282Y02B70/126
    • Electronic ballast power supply/control circuits and methods that can be used to supply starting power to PFC control chips and that can be used to control ballasts so that PFC and inverter power supply circuits supply stable power to control circuitry even when the ballasts are performing advanced ballast functions. The circuits and methods supply starting power more quickly and efficiently than prior art starting circuits and control ballasts by either loading PFC circuits or inverter circuits included in the ballasts. The circuits load PFC circuits by connecting load resistors to the PFC circuits or by operating the inverter circuits at high frequencies that generate switching losses in the inverter transistors that load the PFC circuits. Inverter circuits are loaded by operating the inverter at frequencies that are much higher than preheating, igniting, and normal operating frequencies.
    • 电子镇流器电源/控制电路和方法,可用于向PFC控制芯片提供启动电源,并可用于控制镇流器,以便PFC和逆变器电源电路为控制电路提供稳定的电源,即使镇流器正在执行高级 镇流器功能。 电路和方法通过加载镇流器中包含的PFC电路或逆变器电路,比现有技术的启动电路和控制镇流器更快速和有效地提供启动功率。 电路通过将负载电阻连接到PFC电路或通过在加载PFC电路的逆变器晶体管中产生开关损耗的高频操作逆变器电路来负载PFC电路。 逆变器电路通过以比预热,点火和正常工作频率高得多的频率操作逆变器来加载。
    • 10. 发明申请
    • High efficiency 4-lamp instant start ballast
    • 高效4灯即时启动镇流器
    • US20050168164A1
    • 2005-08-04
    • US11004605
    • 2004-12-03
    • Peter ShackleJohn DernovsekBarrie DrewQinghong Yu
    • Peter ShackleJohn DernovsekBarrie DrewQinghong Yu
    • H05B41/00H05B41/14H05B41/26H05B41/285H05B41/36H05B37/02
    • H05B41/2855Y02B20/186
    • An instant-start ballast for a multiple gas discharge lamp fixture has a single half-bridge inverter that is used to drive at least two series resonant output circuits. Each series resonant output circuit is used to drive two gas discharge lamps. A single output voltage limiting circuit is provided with a microprocessor that monitors the combined output voltages of the series resonant output circuits and uses a single voltage limiting transistor to control the output voltages of the circuits. A capacitor is associated with each gas discharge lamp socket in the fixture such that a voltage across the capacitor indicates that a lamp has been installed in the socket associated with the capacitor. The ignition sequence will only be initiated if the capacitor voltages indicate that a lamp has been installed in each socket of a fixture.
    • 用于多气体放电灯具的立即启动镇流器具有用于驱动至少两个串联谐振输出电路的单个半桥逆变器。 每个串联谐振输出电路用于驱动两个气体放电灯。 单个输出电压限制电路设置有微处理器,其监视串联谐振输出电路的组合输出电压,并使用单个限压晶体管来控制电路的输出电压。 电容器与夹具中的每个气体放电灯插座相关联,使得电容器两端的电压指示灯已经安装在与电容器相关联的插座中。 仅当电容器电压指示灯已安装在灯具的每个插座中时,点火顺序才会启动。