公开(公告)号：US07800928B1

公开(公告)日：2010-09-21

申请号：US11951969

申请日：2007-12-06

申请人： John Jay Dernovsek ,  Steve Mays

发明人： John Jay Dernovsek ,  Steve Mays

IPC分类号： H02M7/5387 ,  H02M3/24

CPC分类号： H02M7/523

摘要： A method of controlling a series-resonant, half-bridge inverter includes turning off the bottom switch and turning on the top switch the inverter when the current through the resonant inductor crosses the zero axis while the current is increasing, thereby insuring zero voltage switching of the inverter switches and increases the overall switching period so that the actual inverter frequency is closer to the resonant frequency of the series-resonant circuit. Using an on-time control circuit, the method further includes controlling the current delivered to the load (such as a gas discharge lamp) by varying the on-time of the top inverter switch.

摘要翻译： 一种控制串联谐振半桥逆变器的方法包括当电流通过谐振电感器穿过零轴而电流增加时，关闭底部开关并接通顶部开关，使逆变器开启，从而确保零电压切换 逆变器开关并增加整个开关周期，使实际的变频器频率更接近串联谐振电路的谐振频率。 使用导通时间控制电路，该方法还包括通过改变顶部逆变器开关的接通时间来控制传送到负载（例如气体放电灯）的电流。

公开(公告)号：US07098608B2

公开(公告)日：2006-08-29

申请号：US11004668

申请日：2004-12-03

申请人： Qinghong Yu ,  Christopher Radzinkski ,  Peter Shackle ,  John Jay Dernovsek

发明人： Qinghong Yu ,  Christopher Radzinkski ,  Peter Shackle ,  John Jay Dernovsek

IPC分类号： H05B37/02

CPC分类号： H05B41/2828 ,  H05B41/2851 ,  Y02B20/186 ,  Y10S315/07

摘要： 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.

摘要翻译： 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。

公开(公告)号：US08536801B1

公开(公告)日：2013-09-17

申请号：US12942155

申请日：2010-11-09

申请人： John Jay Dernovsek

发明人： John Jay Dernovsek

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

CPC分类号： H05B33/0827 ,  H05B33/086

摘要： A system and method are provided for powering a lighting device having one or more arrays of LEDs. Three current sourcing circuits each include a switching element having a source coupled to an input power source. A microcontroller includes a processor, a communications module, an internal clock oscillator, a counter, and program instructions executable to cause the processor to carry out the control functions. Desired light intensity levels are stored as individual output level data, and pulse density modulated output values are generated for each of the stored output level data using carry overflow logic. The generated output values are converted to output signals and provided to the respective current sourcing circuits, wherein current is sourced through the switching elements to respective LEDs of a given color based on a pulse density modulated signal applied to the gates of the respective switching elements.

摘要翻译： 提供了一种用于为具有一个或多个LED阵列的照明装置供电的系统和方法。 三个电流源电路各自包括具有耦合到输入电源的源的开关元件。 微控制器包括可执行以使处理器执行控制功能的处理器，通信模块，内部时钟振荡器，计数器和程序指令。 期望的光强度级别被存储为单独的输出电平数据，并且使用进位溢出逻辑为每个存储的输出电平数据生成脉冲密度调制输出值。 所生成的输出值被转换为输出信号，并提供给相应的电流源电路，其中基于施加到相应开关元件的栅极的脉冲密度调制信号，电流通过开关元件来源于给定颜色的相应LED。

公开(公告)号：US07394204B1

公开(公告)日：2008-07-01

申请号：US11332853

申请日：2006-01-13

申请人： Deepak Shet ,  Changsheng Li ,  John Jay Dernovsek

发明人： Deepak Shet ,  Changsheng Li ,  John Jay Dernovsek

IPC分类号： H05B37/02

CPC分类号： H05B37/0263 ,  Y10S315/04

摘要： A method and apparatus for detecting a zero crossing or desired phase angle of a power line signal having a variable amplitude uses a ratio between a peak amplitude of the power line signal and the amplitude of the power line signal at a desired phase angle for a known amplitude version of the power line signal to detect when a variable amplitude version of the power line signal is at the desired phase angle or zero crossing. The detection of the phase angle is used to determine if a notch is present in the power line signal. A substantially constant width pulse is generated if a notch is detected regardless of the amplitude of the power line voltage or current. The invention is particularly useful in a lighting system for generating and detecting pulses used to communicate information from a power line communication controller to a series of electronic ballasts over a power line used to power the ballasts. The information can be used to control a dimming function of the ballasts.

摘要翻译： 用于检测具有可变幅度的电力线信号的过零或期望相位角的方法和装置使用电力线信号的峰值振幅与所需相位角的电力线信号的振幅之间的比率 电力线信号的振幅版本，以检测何时电力线信号的可变幅度版本处于期望的相位角或过零点。 相位角的检测用于确定电源线信号中是否存在陷波。 如果检测到陷波而与电力线电压或电流的幅度无关，则产生基本恒定的宽度脉冲。 本发明在用于产生和检测脉冲的照明系统中特别有用，所述脉冲用于通过用于对镇流器供电的电力线从电力线通信控制器向一系列电子镇流器传送信息。 该信息可用于控制镇流器的调光功能。

公开(公告)号：US07132803B2

公开(公告)日：2006-11-07

申请号：US11004605

申请日：2004-12-03

申请人： Peter Shackle ,  John Jay Dernovsek ,  Barrie Drew ,  Qinghong Yu

发明人： Peter Shackle ,  John Jay Dernovsek ,  Barrie Drew ,  Qinghong Yu

IPC分类号： H05B37/02

CPC分类号： H05B41/2855 ,  Y02B20/186

摘要： 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.

摘要翻译： 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。

公开(公告)号：US07391168B1

公开(公告)日：2008-06-24

申请号：US11332503

申请日：2006-01-13

申请人： John Jay Dernovsek ,  Deepak Shet ,  Brett Bell

发明人： John Jay Dernovsek ,  Deepak Shet ,  Brett Bell

IPC分类号： H05B37/02 ,  G05B11/01

CPC分类号： H05B37/0263 ,  H02J13/0051 ,  Y02B70/3283 ,  Y02E60/783 ,  Y04S20/246 ,  Y04S40/123

摘要： A system for establishing communications between a central lighting controller and a series of electronic dimming ballasts uses an AC power supply line as a communication medium. A MOSFET switched by a control circuit selectively shorts the AC power lines when a rectified version of the power line signal indicates that the power line signal is nearing a zero crossing to create notches in the AC power signal. A simple receiver in each of the ballasts detects the presence or absence of notches in the power signal and interprets the results as digital data indicating a desired dimming level for each of the ballast. The ballasts then adjust their light output accordingly.

摘要翻译： 用于在中央照明控制器和一系列电子调光镇流器之间建立通信的系统使用AC电源线作为通信介质。 当电源线信号的整流版本表示电力线信号接近零交叉以在AC电力信号中产生缺口时，由控制电路切换的MOSFET选择性地短路AC电力线。 每个镇流器中的简单接收器检测功率信号中存在或不存在缺口，并将结果解释为指示每个镇流器的期望调光水平的数字数据。 然后镇流器相应地调节其光输出。

公开(公告)号：US07239094B2

公开(公告)日：2007-07-03

申请号：US11004646

申请日：2004-12-03

申请人： Christopher Radzinski ,  John Jay Dernovsek ,  Qinghong Yu

发明人： Christopher Radzinski ,  John Jay Dernovsek ,  Qinghong Yu

IPC分类号： H05B37/02

CPC分类号： H05B41/295 ,  Y10S315/05

摘要： An electronic ballast includes a microcontroller with software to provide an adaptive lamp preheat and ignition operation. The microcontroller commands a test frequency from the inverter and detects the frequency response of the resonant output circuit by measuring the voltage across the resonant capacitor. The measured voltages are compared to one or more reference voltages as the frequency is varied to select the optimal inverter frequency. An algorithm or look-up table is used to set the inverter frequencies for the lamp preheat and ignition phases.

摘要翻译： 电子镇流器包括具有软件的微控制器，以提供自适应灯预热和点火操作。 微控制器从变频器命令测试频率，并通过测量谐振电容器两端的电压来检测谐振输出电路的频率响应。 将测量的电压与一个或多个参考电压进行比较，因为频率被改变以选择最佳的逆变器频率。 使用算法或查找表来设置灯预热和点火阶段的逆变器频率。

公开(公告)号：US07098607B2

公开(公告)日：2006-08-29

申请号：US11004667

申请日：2004-12-03

申请人： Qinghong Yu ,  Christopher Radzinski ,  John Jay Dernovsek ,  Peter Shackle

发明人： Qinghong Yu ,  Christopher Radzinski ,  John Jay Dernovsek ,  Peter Shackle

IPC分类号： H05B37/02

CPC分类号： H05B41/2828 ,  H05B41/2851 ,  Y02B20/186 ,  Y10S315/07

摘要： An improved high input voltage instant start electronic ballast uses a substantially lossless snubber circuit. The substantially lossless snubber circuit is incorporated into the ballast to reduce turn off losses and increase the efficiency of the ballast. The snubber circuit includes two capacitors connected in parallel with respect to the two switching transistors or FETS in the inverter of the ballast. A series-resonant lamp voltage sensing circuit is also provided that uses a voltage dividing capacitor to accomplish lossless monitoring of the open circuit voltage of the ballast. A cable compensation circuit minimizes variations in the open circuit voltage due to the connecting and disconnecting of a cable to the ballast by limiting the turn on times of the transistors during high voltage conditions.

摘要翻译： 改进的高输入电压即时启动电子镇流器使用基本上无损耗的缓冲电路。 基本上无损耗的缓冲电路并入镇流器中以减少关断损耗并提高镇流器的效率。 缓冲电路包括相对于镇流器的反相器中的两个开关晶体管或FETS并联连接的两个电容器。 还提供了串联谐振灯电压感测电路，其使用分压电容器来实现对镇流器的开路电压的无损检测。 电缆补偿电路通过在高电压条件下限制晶体管的导通时间，将电缆连接和断开到镇流器，使开路电压的变化最小化。

公开(公告)号：US07098606B2

公开(公告)日：2006-08-29

申请号：US11004625

申请日：2004-12-03

申请人： Qinghong Yu ,  Christopher Radzinski ,  Peter Shackle ,  John Jay Dernovsek

发明人： Qinghong Yu ,  Christopher Radzinski ,  Peter Shackle ,  John Jay Dernovsek

IPC分类号： H05B37/02

CPC分类号： H05B41/2828 ,  H05B41/2851 ,  Y02B20/186 ,  Y10S315/07

摘要： An electronic ballast uses a voltage sampling circuit and a voltage control circuit to limit the open circuit voltage of the ballast. A lamp voltage sensing circuit is provided that uses a voltage dividing capacitor to accomplish lossless monitoring of the open circuit voltage of the ballast. A resistor placed in series with the sampling capacitor is used to create a voltage that turns a control transistor off and on. The control transistor produces a gating signal trimming signal that a half bridge driver uses to alter the gating signals provided to the inverter transistors of the ballast. A cable compensation circuit is included that minimizes variations in the open circuit voltage due to the connecting and disconnecting of a cable to the ballast by turning the control transistor off and on.

摘要翻译： 电子镇流器使用电压采样电路和电压控制电路来限制镇流器的开路电压。 提供一种使用分压电容器来实现对镇流器的开路电压进行无损检测的灯电压检测电路。 使用与采样电容器串联布置的电阻器来产生使控制晶体管断开和接通的电压。 控制晶体管产生门控信号调整信号，半桥驱动器用于改变提供给镇流器的反相器晶体管的选通信号。 包括电缆补偿电路，其通过将控制晶体管断开和接通而使电缆连接到镇流器并将其断开，从而最小化开路电压的变化。