公开(公告)号：US08288956B1

公开(公告)日：2012-10-16

申请号：US12753392

申请日：2010-04-02

申请人： Wei Xiong ,  Thomas Lunn ,  Christopher Radzinski

发明人： Wei Xiong ,  Thomas Lunn ,  Christopher Radzinski

IPC分类号： H05B37/00 ,  H05B39/00 ,  H05B41/14 ,  H05B41/16 ,  H05B37/02 ,  H05B39/04 ,  H05B41/36 ,  G05F1/00

CPC分类号： H05B41/295

摘要： A circuit for preheating filaments in lamps powered by an electronic ballast includes an inverter tank circuit and a preheat tank circuit. The preheat tank circuit has a preheat capacitor connected in parallel with a primary winding of a filament preheat transformer. A cut-back capacitor is connected between the preheat tank circuit and circuit ground. The filament preheat transformer has secondary windings coupled to the first and second lamp terminals to provide a filament preheat voltage. The inverter operates at a preheat frequency during a lamp preheat mode and at a steady-state frequency during a lamp steady-state mode, the steady-state frequency being lower than the preheat frequency. The preheat tank circuit has a natural resonant frequency that is approximately the same as the preheat frequency so that when the ballast is operating in the steady state mode, the filament voltage is substantially lower than when the ballast is operating in the preheat mode.

摘要翻译： 用于通过电子镇流器供电的灯预热灯的电路包括逆变器箱电路和预热箱电路。 预热箱电路具有与灯丝预热变压器的初级绕组并联连接的预热电容器。 在预热箱电路和电路接地之间连接有一个截止电容。 灯丝预热变压器具有耦合到第一和第二灯端子的次级绕组以提供灯丝预热电压。 在灯预热模式下，逆变器工作在预热频率，在灯稳态模式下处于稳态频率，稳态频率低于预热频率。 预热槽电路具有与预热频率大致相同的固有谐振频率，使得当镇流器在稳态模式下工作时，灯丝电压基本上低于镇流器在预热模式下工作时的灯丝电压。

公开(公告)号：US08482213B1

公开(公告)日：2013-07-09

申请号：US12825573

申请日：2010-06-29

申请人： Wei Xiong ,  Thomas Lunn ,  Christopher Radzinski

发明人： Wei Xiong ,  Thomas Lunn ,  Christopher Radzinski

IPC分类号： H05B37/02

CPC分类号： H05B41/2855

摘要： An electronic ballast for fluorescent lighting includes an inverter circuit having an output circuit coupled to a pair of lamp terminals. A protection circuit is coupled to one of the lamp terminals. The protection circuit includes a differential voltage sensing circuit that is functional to sense the lamp voltage pulses as sudden changes in voltage across a DC blocking capacitor and, in response, to provide a positive AC voltage pulse. A pulse accumulation circuit is coupled to the differential voltage sensing circuit. The pulse accumulation circuit is responsive to the positive AC voltage pulses from the differential voltage sensing circuit to accumulate the positive AC voltage pulses into the ballast shutdown signal.

摘要翻译： 用于荧光灯的电子镇流器包括具有耦合到一对灯端子的输出电路的逆变器电路。 保护电路耦合到一个灯端子。 保护电路包括差分电压检测电路，其功能是将灯电压脉冲作为突发的跨越DC阻断电容器的电压变化，并作为响应提供正的AC电压脉冲。 脉冲累积电路耦合到差分电压感测电路。 脉冲累积电路响应来自差分电压感测电路的正交流电压脉冲，以将正的交流电压脉冲累积到镇流器关断信号中。

公开(公告)号：US07923942B1

公开(公告)日：2011-04-12

申请号：US12100288

申请日：2008-04-09

申请人： Wei Xiong ,  Thomas Lunn ,  Christopher Radzinski

发明人： Wei Xiong ,  Thomas Lunn ,  Christopher Radzinski

IPC分类号： H05B37/02

CPC分类号： H05B41/42 ,  Y10S315/04

摘要： A constant current source mirror tank dimmable ballast operates multiple high impedance lamps in a stable and balanced manner. The dimmable ballast has an inverter connected to two third-order resonant circuits. These third-order resonant circuits dominate the transfer function of the ballast circuits. Consequently, changes in the impedance of the lamp do not affect the current output to the lamps.

摘要翻译： 恒流源镜筒可调光镇流器以稳定和平衡的方式操作多个高阻抗灯。 调光镇流器具有连接到两个三阶谐振电路的反相器。 这些三阶谐振电路支配镇流器电路的传递函数。 因此，灯的阻抗的变化不影响到灯的电流输出。

公开(公告)号：US07843141B1

公开(公告)日：2010-11-30

申请号：US12017750

申请日：2008-01-22

申请人： Wei Xiong ,  Thomas Lunn ,  Christopher Radzinski

发明人： Wei Xiong ,  Thomas Lunn ,  Christopher Radzinski

IPC分类号： H05B37/00

CPC分类号： H05B41/42 ,  Y10S315/04

摘要： A step dimming interface is utilized to operate a load such as a gas discharge lamp. The dimming interface has first and second switches for determining when the gas discharge lamp operates at either a normal power level or a dimming power level. A rectifier circuit is connected to a control signal production circuit. By manipulating the first and second switches, the rectifier sends either a full-wave rectified signal or a half-wave rectified signal to the control signal production circuit which determines the output of the control signal production circuit. The control signal production circuit may be connected to an electronic ballast which varies the power level of the lamp according to this output.

摘要翻译： 利用阶梯调光接口来操作诸如气体放电灯的负载。 调光接口具有第一和第二开关，用于确定气体放电灯何时在正常功率水平或调光功率水平下工作。 整流电路连接到控制信号生成电路。 通过操纵第一和第二开关，整流器将全波整流信号或半波整流信号发送到确定控制信号产生电路的输出的控制信号产生电路。 控制信号生成电路可以连接到根据该输出改变灯的功率电平的电子镇流器。

公开(公告)号：US08378579B1

公开(公告)日：2013-02-19

申请号：US12708168

申请日：2010-02-18

申请人： Thomas Lunn ,  Wei Xiong

发明人： Thomas Lunn ,  Wei Xiong

IPC分类号： H05B41/12

CPC分类号： H05B41/295 ,  H05B41/2827 ,  Y02B20/188

摘要： A ballast circuit includes a control loop to reduce a filament heating voltage below after the lamp filaments have been pre-heated. A filament cutback circuit includes a filament cut-back inductive component magnetically coupled to the resonant inductive component in the inverter to receive a filament cutback control voltage associated with an AC voltage for powering the lamps. During the pre-heating period, the filament cutback control voltage is not high enough to charge a chargeable component to a switch threshold level. However, during lamp ignition, the filament cutback control voltage is increased and charges the chargeable component to the switch threshold level. This causes a switch device to operate in a conductive switch state and the filament cutback circuit suppresses the pre-heat voltage.

摘要翻译： 镇流器电路包括控制回路，以在灯丝被预热后降低灯丝加热电压。 灯丝削减电路包括磁耦合到逆变器中的谐振电感元件的灯丝截止电感元件，以接收与用于为灯供电的AC电压相关联的灯丝削减控制电压。 在预热期间，灯丝切断控制电压不足以将可充电部件充电至开关阈值电平。 然而，在点灯期间，灯丝切断控制电压增加，并将可充电部件充电至开关阈值电平。 这使得开关装置在导通开关状态下工作，灯丝切断电路抑制预热电压。

公开(公告)号：US08450946B1

公开(公告)日：2013-05-28

申请号：US13077887

申请日：2011-03-31

申请人： Thomas Lunn ,  Candice Damian

发明人： Thomas Lunn ,  Candice Damian

IPC分类号： H05B41/24 ,  G05F1/00

CPC分类号： H05B37/0245

摘要： A zone addressing circuit is provided for an electronic ballast having a boost inductor with an auxiliary winding. The zone addressing circuit includes a first circuit branch coupled to a first addressing input terminal, a second circuit branch coupled to a second addressing input terminal, and a third (common) branch coupled on a first end to a third addressing input terminal and on a second end to the auxiliary winding of the boost inductor for providing a high frequency input pulse signal to excite the first and second branches. The first branch generates a first digital output for the zone addressing circuit when coupled to the common branch, and the second branch generates a second digital output for the zone addressing circuit when coupled to the common branch. A controller adjusts a dimming level of the ballast based on the first and second digital outputs from the zone addressing circuit.

摘要翻译： 为具有辅助绕组的升压电感器的电子镇流器提供区域寻址电路。 区域寻址电路包括耦合到第一寻址输入端的第一电路支路，耦合到第二寻址输入端的第二电路支路和耦合在第一端到第三寻址输入端上的第三（公共）支路 升压电感器的辅助绕组的第二端，用于提供高频输入脉冲信号以激励第一和第二分支。 当耦合到公共分支时，第一分支产生用于区域寻址电路的第一数字输出，并且当耦合到公共分支时，第二分支产生用于区域寻址电路的第二数字输出。 控制器基于来自区域寻址电路的第一和第二数字输出来调节镇流器的调光电平。