公开(公告)号：US08749162B2

公开(公告)日：2014-06-10

申请号：US13024443

申请日：2011-02-10

申请人： Nitin Kumar ,  Shashank Bakre ,  Thomas J. Schalton

发明人： Nitin Kumar ,  Shashank Bakre ,  Thomas J. Schalton

IPC分类号： H05B37/02 ,  H05B41/24

CPC分类号： H05B41/2827 ,  H02M7/53832 ,  H05B41/42 ,  Y02B20/185

摘要： 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.

摘要翻译： 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。

公开(公告)号：US20120326609A1

公开(公告)日：2012-12-27

申请号：US13169613

申请日：2011-06-27

申请人： Nitin Kumar ,  Shashank Bakre ,  Thomas J. Schalton

发明人： Nitin Kumar ,  Shashank Bakre ,  Thomas J. Schalton

IPC分类号： H05B37/02

CPC分类号： H05B41/2806 ,  H05B37/0209 ,  Y02B20/22

摘要： 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.

摘要翻译： 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。

公开(公告)号：US08686659B2

公开(公告)日：2014-04-01

申请号：US13169613

申请日：2011-06-27

申请人： Nitin Kumar ,  Shashank Bakre ,  Thomas J. Schalton

发明人： Nitin Kumar ,  Shashank Bakre ,  Thomas J. Schalton

IPC分类号： H05B37/02

CPC分类号： H05B41/2806 ,  H05B37/0209 ,  Y02B20/22

摘要： 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.

摘要翻译： 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。

公开(公告)号：US20120206059A1

公开(公告)日：2012-08-16

申请号：US13024443

申请日：2011-02-10

申请人： Nitin Kumar ,  Shashank Bakre ,  Thomas J. Schalton

发明人： Nitin Kumar ,  Shashank Bakre ,  Thomas J. Schalton

IPC分类号： H05B41/24

CPC分类号： H05B41/2827 ,  H02M7/53832 ,  H05B41/42 ,  Y02B20/185

摘要： 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.

摘要翻译： 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。

公开(公告)号：US07154229B2

公开(公告)日：2006-12-26

申请号：US10982379

申请日：2004-11-04

申请人： Felix I. Alexandrov ,  Joseph L. Parisella ,  Thomas J. Schalton

发明人： Felix I. Alexandrov ,  Joseph L. Parisella ,  Thomas J. Schalton

IPC分类号： H05B39/04

CPC分类号： H05B41/42 ,  H05B37/0263 ,  H05B41/2853

摘要： An electronic ballast (10) for powering at least one gas discharge lamp (30) includes a current-fed resonant inverter (300) and a load shed circuit (600). Inverter (300) ordinarily powers the lamp at a first level. When a load shed command is sent by the electric utility and received by an associated load shed receiver within the ballast (10), load shed circuit (600) causes the inverter to reduce the lamp power from the first level to a second level. Preferably, load shed circuit (600) includes an isolation circuit (620) and a bidirectional switch (640) that is coupled in parallel with a return ballasting capacitor (388) within inverter (300). In the absence of a load shed command, bidirectional switch (640) effectively shunts return ballasting capacitor (388), which causes the lamp to be powered at the first level. In response to a load shed command, bidirectional switch (640) ceases to shunt return ballasting capacitor (388), thereby causing the lamp power to be reduced to the second level.