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    • 2. 发明申请
    • BALLAST WITH ANTI-STRIATION CIRCUIT
    • 具有抗压力电路的压力
    • US20140368120A1
    • 2014-12-18
    • US13917414
    • 2013-06-13
    • Nitin KumarShashank Bakre
    • Nitin KumarShashank Bakre
    • H05B37/02
    • H05B41/2988
    • A ballast comprises an inverter circuit for providing an oscillating current signal for energizing the at least one lamp. The inverter circuit comprises a first switching component and a second switching component each having a collector terminal, a base terminal, and an emitter terminal. And, each switching component is configured for alternately operating between a conductive state and a non-conductive state. A first collector-emitter circuit is connected between the collector terminal and the emitter terminal of the first switching component, wherein the first collector-emitter circuit has a first resistance of zero or more Ohms. A second collector-emitter circuit is connected between the collector terminal and the emitter terminal of the second switching component, wherein the second collector-emitter circuit has a second resistance of zero or more Ohms and the first resistance and the second resistance are unequal.
    • 镇流器包括用于提供用于激励至少一个灯的振荡电流信号的逆变器电路。 逆变器电路包括具有集电极端子,基极端子和发射极端子的第一开关部件和第二开关部件。 并且,每个开关部件被配置为在导通状态和非导通状态之间交替地操作。 第一集电极 - 发射极电路连接在第一开关部件的集电极端子和发射极端子之间,其中第一集电极 - 发射极电路具有零个或更多欧姆的第一电阻。 第二集电极 - 发射极电路连接在第二开关部件的集电极端子和发射极端子之间,其中第二集电极 - 发射极电路具有零欧姆以上的第二电阻,第一电阻和第二电阻不相等。
    • 5. 发明授权
    • Multiple lamp lighting level ballast for series connected lamps
    • 多灯灯管级别镇流器串联连接灯
    • US08686659B2
    • 2014-04-01
    • US13169613
    • 2011-06-27
    • Nitin KumarShashank BakreThomas J. Schalton
    • Nitin KumarShashank BakreThomas J. Schalton
    • H05B37/02
    • H05B41/2806H05B37/0209Y02B20/22
    • A ballast that selectively operates multiple lamps is provided. The ballast includes a switching network, capable of operating in a number of switching configurations. The ballast also includes a control circuit, and two lamp control switches. The control circuit is connected to the switching network, and provides respective control signals via respective output terminals as a function of the switching configuration of the switching network. Each lamp control switch is in parallel with its lamp and is connected to a respective output terminal. The first lamp control switch is connected to a ballast power supply, and either provides power to the first lamp or does not, depending on the first control signal. The second lamp control switch is connected to the first lamp control switch and to ground, and either provides power to the second lamp or does not, depending on the second control signal.
    • 提供了选择性地操作多个灯的镇流器。 镇流器包括能够以多个开关配置操作的开关网络。 镇流器还包括一个控制电路和两个灯控制开关。 控制电路连接到交换网络,并根据交换网络的交换配置,通过相应的输出终端提供相应的控制信号。 每个灯控制开关与其灯并联并连接到相应的输出端。 第一灯控制开关连接到镇流器电源,并且根据第一控制信号向第一灯供电或不提供电源。 第二灯控制开关连接到第一灯控制开关并接地,并且根据第二控制信号向第二灯供电或不提供电源。
    • 6. 发明申请
    • DIM MODE START FOR ELECTRODELESS LAMP BALLAST
    • DIM模式开始用于无电极灯泡
    • US20140001971A1
    • 2014-01-02
    • US13539402
    • 2012-06-30
    • Nitin KumarMarkus ZieglerRobert MartinShashank Bakre
    • Nitin KumarMarkus ZieglerRobert MartinShashank Bakre
    • H05B37/02
    • H05B41/2883H05B41/36
    • A ballast for energizing a lamp at a lighting level selected from a plurality of lamp lighting levels. The ballast includes a buck converter circuit configured to receive a DC voltage signal having a substantially constant magnitude. The buck converter circuit has a duty cycle for generating a lamp voltage output signal from the DC voltage signal. The lamp voltage output signal has a magnitude that is varied by the duty cycle to energize the lamp at the plurality of lamp lighting levels. A controller is configured to receive a dim input signal indicative of the selected lamp lighting level and to provide a control signal to the buck converter circuit as a function of the dim input signal. The control signal indicates a particular duty cycle corresponding to a lamp voltage output signal having a magnitude for energizing the lamp at the selected lamp lighting level.
    • 一种镇流器,用于在从多个灯照明水平中选择的照明水平上激发灯。 镇流器包括被配置为接收具有基本恒定幅度的DC电压信号的降压转换器电路。 降压转换器电路具有用于从直流电压信号产生灯电压输出信号的占空比。 灯电压输出信号具有由占空比变化的大小,以在多个灯照明电平下给灯供电。 控制器被配置为接收指示所选择的灯点亮电平的暗淡输入信号,并且作为所述暗淡输入信号的函数向所述降压转换器电路提供控制信号。 控制信号表示对应于灯电压输出信号的特定占空比,该灯电压输出信号具有在选定的灯照明电平下对灯进行激励的幅度。
    • 7. 发明授权
    • Starting circuit for buck converter
    • 降压转换器启动电路
    • US08569966B2
    • 2013-10-29
    • US13302075
    • 2011-11-22
    • Nitin KumarShashank BakreMarkus Ziegler
    • Nitin KumarShashank BakreMarkus Ziegler
    • H05B37/02H05B41/36
    • H05B41/042H05B41/2806Y02B20/22
    • A ballast to energize a lamp is provided. The ballast comprises a buck converter connected to an inverter via a switching component. The buck converter includes a transistor, a capacitor, a diode, and an inductor. The switching component has a predetermined breakover voltage value and is configured to provide a start up signal to the inverter when voltage at the switching component increases to the predetermined breakover voltage value. A control circuit is configured to monitor the voltage at the switching component while the voltage at the switching component increases to the predetermined breakover voltage, and is configured to generate a gate drive pulse at a gate terminal of the transistor when the voltage at the switching component reaches a predetermined voltage that is less than the breakover voltage of the switching component.
    • 提供了一个用于激励灯的镇流器。 镇流器包括通过开关部件连接到逆变器的降压转换器。 降压转换器包括晶体管,电容器,二极管和电感器。 开关部件具有预定的分解电压值,并且被配置为当开关部件的电压增加到预定的转折电压值时,向逆变器提供启动信号。 控制电路被配置为在切换部件处的电压升高到预定的断开电压时监视开关部件的电压,并且被配置为当开关部件的电压为阈值时,在晶体管的栅极端产生栅极驱动脉冲 达到小于开关部件的断流电压的预定电压。
    • 10. 发明申请
    • TWO LEVEL LIGHTING BALLAST
    • 两级照明灯
    • US20120206059A1
    • 2012-08-16
    • US13024443
    • 2011-02-10
    • Nitin KumarShashank BakreThomas J. Schalton
    • Nitin KumarShashank BakreThomas J. Schalton
    • H05B41/24
    • H05B41/2827H02M7/53832H05B41/42Y02B20/185
    • A two level lighting ballast is provided, which includes a self-oscillating inverter circuit and a control circuit. The inverter includes an input; an output to selectively provide current to energize a lamp; a switching circuit operating at a switching frequency; a feedback transformer; and an impedance component. The feedback transformer is connected to the output, and drives the switching circuit based on the lamp current. The impedance component is connected in parallel with the feedback transformer, and is operated by the control circuit. When the control circuit enables the impedance component, the switching circuit operates in a first frequency range, and a first lamp current is provided. When the control circuit disables the impedance component, the switching circuit operates in a second frequency range, and a second lamp current is provided. The first frequency range is lower than the second, and the first lamp current is greater than the second.
    • 提供了两级照明镇流器,其包括自振荡逆变器电路和控制电路。 逆变器包括一个输入端; 输出以选择性地提供电流以激励灯; 以开关频率工作的开关电路; 反馈变压器; 和阻抗分量。 反馈变压器连接到输出,并根据灯电流驱动开关电路。 阻抗元件与反馈变压器并联,由控制电路工作。 当控制电路使能阻抗分量时,开关电路在第一频率范围内工作,并提供第一灯电流。 当控制电路禁止阻抗分量时,开关电路在第二频率范围内工作,并提供第二灯电流。 第一个频率范围低于第二个频率范围,第一个灯电流大于第二个。