公开(公告)号：US08836240B2

公开(公告)日：2014-09-16

申请号：US13539402

申请日：2012-06-30

申请人： Nitin Kumar ,  Markus Ziegler ,  Robert Martin ,  Shashank Bakre

发明人： Nitin Kumar ,  Markus Ziegler ,  Robert Martin ,  Shashank Bakre

IPC分类号： H05B37/02

CPC分类号： H05B41/2883 ,  H05B41/36

摘要： 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.

摘要翻译： 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。

公开(公告)号：US08674617B2

公开(公告)日：2014-03-18

申请号：US13077063

申请日：2011-03-31

申请人： Nitin Kumar ,  Shashank Bakre

发明人： Nitin Kumar ,  Shashank Bakre

IPC分类号： H05B37/02

CPC分类号： H05B41/40 ,  H05B41/42

摘要： A lighting system converter circuit of a lamp power converter to selectively operate a plurality of lamps connected thereto is provided. The lighting system converter circuit includes a first impedance circuit and a second impedance circuit. Each impedance circuit includes an input terminal, an impedance component, and a switching network. The impedance components are each configured to connect in series with the lamps. Each input terminal is configured to receive a control signal that indicates a state of a switch. Each control signal has a first logic level, indicating the switch is non-conductive, and a second logic level, indicating the switch is conductive. Each switching network is connected to its respective input terminal and in parallel with its respective impedance component, and is configured to selectively operate between a conductive state and a non-conductive state, as a function of the logic level of its respective control signal.

摘要翻译： 提供了一种用于选择性地操作连接到其上的多个灯的灯功率转换器的照明系统转换器电路。 照明系统转换器电路包括第一阻抗电路和第二阻抗电路。 每个阻抗电路包括输入端子，阻抗部件和开关网络。 阻抗元件各自被配置为与灯串联。 每个输入端被配置为接收指示开关状态的控制信号。 每个控制信号具有第一逻辑电平，指示开关不导通，并且指示开关是导通的第二逻辑电平。 每个开关网络连接到其相应的输入端并且与其相应的阻抗分量并联，并且被配置为根据其各自的控制信号的逻辑电平的选择性地在导通状态和非导通状态之间操作。

公开(公告)号：US20130057172A1

公开(公告)日：2013-03-07

申请号：US13226922

申请日：2011-09-07

申请人： Nitin Kumar ,  Shashank Bakre ,  Driss Baba ,  Thomas Schalton

发明人： Nitin Kumar ,  Shashank Bakre ,  Driss Baba ,  Thomas Schalton

IPC分类号： H05B37/02

CPC分类号： H05B41/40

摘要： A three light level electronic ballast, and methods of operating lamps at three light levels, are provided. The ballast includes a rectifier, a power factor correction circuit, an inverter circuit, a first circuit, a second circuit, and a control circuit. The rectifier receives an AC voltage signal and produces a rectified voltage signal, which the power factor correction circuit receives and uses to provide a corrected voltage signal. The inverter circuit receives the corrected voltage signal and provides an energizing signal to power at least two lamps. The first circuit selectively reduces the current applied to the lamps by the energizing signal. The second circuit selectively prevents the second lamp from being energized by the energizing signal. The control circuit controls the first circuit and the second circuit.

摘要翻译： 提供三个光级电子镇流器，以及三个灯级操作灯的方法。 镇流器包括整流器，功率因数校正电路，逆变器电路，第一电路，第二电路和控制电路。 整流器接收交流电压信号并产生整流电压信号，功率因数校正电路接收并用于提供校正的电压信号。 逆变器电路接收经校正的电压信号并提供通电信号以供电至少两个灯。 第一电路通过激励信号选择性地降低施加到灯的电流。 第二电路选择性地防止第二灯被激励信号激励。 控制电路控制第一电路和第二电路。

公开(公告)号：US20110163685A1

公开(公告)日：2011-07-07

申请号：US12986596

申请日：2011-01-07

申请人： Nitin Kumar ,  Shashank Bakre ,  Christian Breuer

发明人： Nitin Kumar ,  Shashank Bakre ,  Christian Breuer

IPC分类号： H05B41/16

CPC分类号： H05B41/2855

摘要： A lamp driver circuit to selectively energize one or more lamps is provided. The inverter circuit has a transformer with primary and secondary windings to provide voltage to the lamps. A filter is connected to the primary winding to receive a primary winding signal representative of the voltage across the primary winding. The primary winding signal has a frequency spectrum and the filter detects a particular characteristic of the frequency spectrum that is indicative of an end of life (EOL) condition of the one or more lamps. A control circuit is connected to the inverter circuit and to the filter. The control circuit is configured to discontinue energizing of the one or more lamps by the inverter circuit when the particular characteristic of the frequency spectrum of the primary winding signal is detected by the filter.

摘要翻译： 提供了用于选择性地激励一个或多个灯的灯驱动器电路。 逆变器电路具有带有初级和次级绕组的变压器，以向灯提供电压。 滤波器连接到初级绕组以接收表示初级绕组两端的电压的初级绕组信号。 初级绕组信号具有频谱，并且滤波器检测指示一个或多个灯的寿命终止（EOL）状态的频谱的特定特性。 控制电路连接到逆变器电路和滤波器。 控制电路被配置为当通过滤波器检测到初级绕组信号的频谱的特定特性时，通过逆变器电路中断一个或多个灯的通电。

公开(公告)号：US20100301752A1

公开(公告)日：2010-12-02

申请号：US12474080

申请日：2009-05-28

申请人： Shashank Bakre ,  Nitin Kumar

发明人： Shashank Bakre ,  Nitin Kumar

IPC分类号： H05B37/02

CPC分类号： H05B41/2981 ,  H05B37/04

摘要： A ballast for driving one or more lamps includes a controller and a current reduction circuit for accelerating a controller reset. Upon detecting a fault, the controller disables the ballast for a preset period of time, and resets. The controller additionally resets when the ratio of a supplied second value to a supplied first value falls below a threshold value. The current reduction circuit reduces the supplied second value in less than the preset period of time, such that the ratio falls below the threshold value and the controller resets. An emergency lighting system includes the ballast as a primary ballast, a backup ballast, and a primary power source. The controller detects a fault if the primary power source de-energizes and the backup ballast disconnects the one or more lamps from the primary ballast. The current reduction circuit accelerates the reset of the controller when the primary power source de-energizes.

摘要翻译： 用于驱动一个或多个灯的镇流器包括用于加速控制器复位的控制器和电流减小电路。 检测到故障后，控制器会在预设的时间段内关闭镇流器，并重置。 当提供的第二值与所提供的第一值的比率低于阈值时，控制器另外复位。 电流减小电路在小于预设时间段内减小提供的第二值，使得该比率低于阈值并且控制器复位。 应急照​​明系统包括镇流器作为主要镇流器，备用镇流器和主电源。 如果主电源断电，并且备用镇流器将一个或多个灯与主镇流器断开连接，则控制器将检测故障。 当主电源断电时，电流降低电路加速了控制器的复位。

公开(公告)号：US07218063B2

公开(公告)日：2007-05-15

申请号：US11139068

申请日：2005-05-27

申请人： John G. Konopka ,  Naveen Yadlapalli ,  Shashank Bakre ,  Himamshu Prasad

发明人： John G. Konopka ,  Naveen Yadlapalli ,  Shashank Bakre ,  Himamshu Prasad

IPC分类号： G05F1/00

CPC分类号： H05B41/42

摘要： A ballast (100) for powering at least one gas discharge lamp (30) at two selectable light levels includes a sensing transformer (120) and a detector circuit (200). Detector circuit (200) provides an output voltage that is dependent on the states of two on-off switches (S1,S2) interposed between the ballast (100) and a conventional AC source (20). The output voltage of the detector circuit (200) is used to control the illumination level of the lamp (30).

摘要翻译： 用于在两个可选择的光级处为至少一个气体放电灯（30）供电的镇流器（100）包括感测变压器（120）和检测器电路（200）。 检测器电路（200）提供取决于介于镇流器（100）和常规AC源（20）之间的两个开 - 关开关（S1，S2）的状态的输出电压。 检测器电路（200）的输出电压用于控制灯（30）的照明水平。

公开(公告)号：US20060138968A1

公开(公告)日：2006-06-29

申请号：US11095088

申请日：2005-03-30

申请人： Shashank Bakre

发明人： Shashank Bakre

IPC分类号： H05B39/04

CPC分类号： H05B41/295 ,  Y10S315/04 ,  Y10S315/05

摘要： A ballast (10) for powering at least one gas discharge lamp (20) having lamp filaments (22,24) comprises an inverter (200), an output circuit (300), a filament heating control circuit (400), and a dimming control circuit (500). Filament heating control circuit (400) is coupled to the dimming control circuit and at least one of the inverter and the output circuit. During operation, filament heating control circuit (400) controls the inverter and output circuit such that heating of the lamp filaments is provided during a preheat mode that occurs prior to ignition of the lamp, and during a dimming mode that optionally occurs after ignition of the lamp and that includes operating the lamp at a current level that is substantially less than a rated normal operating current of the lamp. No heating of the lamp filaments is provided during a full-light mode that occurs after ignition of the lamp and that includes operating the lamp at a current level that is substantially equal to the rated normal operating current of the lamp.

摘要翻译： 用于为具有灯丝（22,24）的至少一个气体放电灯（20）供电的镇流器（10）包括逆变器（200），输出电路（300），灯丝加热控制电路（400）和调光 控制电路（500）。 灯丝加热控制电路（400）耦合到调光控制电路和反相器和输出电路中的至少一个。 在操作期间，灯丝加热控制电路（400）控制逆变器和输出电路，使得在灯点火之前发生的预热模式期间提供灯丝的加热，并且在可选地在点火之后发生的调光模式期间 灯，其包括将灯操作在基本上小于灯的额定正常工作电流的电流水平。 在灯点燃之后发生的全光模式期间不提供灯丝的加热，并且包括将灯操作在基本上等于灯的额定正常工作电流的电流水平。

公开(公告)号：US20060125416A1

公开(公告)日：2006-06-15

申请号：US11010845

申请日：2004-12-13

申请人： John Konopka ,  Naveen Yadlapalli ,  Shashank Bakre ,  Himamshu Prasad

发明人： John Konopka ,  Naveen Yadlapalli ,  Shashank Bakre ,  Himamshu Prasad

IPC分类号： H05B37/02

CPC分类号： H05B41/42 ,  H05B41/282 ,  H05B41/40 ,  Y02B20/183

摘要： An electronic ballast (100) for powering at least one gas discharge lamp (30) at two light levels includes a full-wave rectifier circuit (120) and a detector circuit (200). Detector circuit (200) provides an output voltage that is dependent on the states of two on-off switches (S1,S2), but that is substantially unaffected by typical X capacitances that are present between the hot and neutral input connections of the ballast.

摘要翻译： 用于在两个光级处为至少一个气体放电灯（30）供电的电子镇流器（100）包括全波整流器电路（120）和检测器电路（200）。 检测器电路（200）提供取决于两个开关开关（S1，S2）的状态的输出电压，但是基本上不受存在于所述第一和第二开关的热和中性输入连接之间的典型X电容的影响 镇流器

公开(公告)号：US08878453B1

公开(公告)日：2014-11-04

申请号：US13917362

申请日：2013-06-13

申请人： Ayan Choudhury ,  Arindam Chakraborty ,  Shashank Bakre

发明人： Ayan Choudhury ,  Arindam Chakraborty ,  Shashank Bakre

IPC分类号： H05B37/02 ,  H05B41/285

CPC分类号： H05B41/3925

摘要： A ballast comprises an inverter circuit for connecting to a lamp and providing power thereto. The ballast includes a current feedback circuit connected to the inverter circuit and the lamp for controlling the frequency of the inverter circuit based on current feedback from the lamp. The ballast includes a switch circuit connected to the current feedback circuit and the lamp for enabling the current feedback circuit when the lamp is in a normal operating state and disabling the current feedback circuit when the lamp is in a low current operating state.

摘要翻译： 镇流器包括用于连接到灯并向其供电的逆变器电路。 镇流器包括连接到逆变器电路的电流反馈电路和用于基于来自灯的电流反馈来控制逆变器电路的频率的灯。 镇流器包括连接到电流反馈电路和灯的开关电路，用于当灯处于正常工作状态时使能电流反馈电路，并且当灯处于低电流工作状态时禁止电流反馈电路。

公开(公告)号：US08698428B2

公开(公告)日：2014-04-15

申请号：US13226922

申请日：2011-09-07

申请人： Nitin Kumar ,  Shashank Bakre ,  Driss Baba ,  Thomas Schalton

发明人： Nitin Kumar ,  Shashank Bakre ,  Driss Baba ,  Thomas Schalton

IPC分类号： H05B37/02

CPC分类号： H05B41/40

摘要： A three light level electronic ballast, and methods of operating lamps at three light levels, are provided. The ballast includes a rectifier, a power factor correction circuit, an inverter circuit, a first circuit, a second circuit, and a control circuit. The rectifier receives an AC voltage signal and produces a rectified voltage signal, which the power factor correction circuit receives and uses to provide a corrected voltage signal. The inverter circuit receives the corrected voltage signal and provides an energizing signal to power at least two lamps. The first circuit selectively reduces the current applied to the lamps by the energizing signal. The second circuit selectively prevents the second lamp from being energized by the energizing signal. The control circuit controls the first circuit and the second circuit.

摘要翻译： 提供三个光级电子镇流器，以及三个灯级操作灯的方法。 镇流器包括整流器，功率因数校正电路，逆变器电路，第一电路，第二电路和控制电路。 整流器接收交流电压信号并产生整流电压信号，功率因数校正电路接收并用于提供校正的电压信号。 逆变器电路接收经校正的电压信号并提供通电信号以供电至少两个灯。 第一电路通过激励信号选择性地降低施加到灯的电流。 第二电路选择性地防止第二灯被激励信号激励。 控制电路控制第一电路和第二电路。