公开(公告)号：US20150054418A1

公开(公告)日：2015-02-26

申请号：US14477297

申请日：2014-09-04

申请人： Cirrus Logic, Inc.

发明人： Eric J. King ,  John L. Melanson

IPC分类号： H05B33/08 ,  H05B37/02

CPC分类号： H05B33/0815 ,  H05B37/02 ,  H05B39/044 ,  Y10S315/04

摘要： A system and method includes a controller that is configured to coordinate (i) a low impedance path for a dimmer current, (ii) attaching a dimmer to a power converter system at the leading edge of a phase-cut, rectified input voltage, (iii), control of switch mode power conversion, and (iv) an inactive state to, for example, reduce the dimmer current while allowing a dimmer to function normally from cycle to cycle of an alternating current (AC) supply voltage. In at least one embodiment, the dimmer functions normally when the dimmer conducts at a correct phase angle indicated by a dimmer input setting and avoids prematurely resetting while conducting. In at least one embodiment, by coordinating functions (i), (ii), (iii), and (iv) the controller controls a power converter system that is compatible with a triac-based dimmer.

摘要翻译： 一种系统和方法包括控制器，其被配置为协调（i）用于调光器电流的低阻抗路径，（ii）在相切割整流的输入电压的前沿将调光器附接到功率转换器系统（ iii），开关模式功率转换的控制，以及（iv）非活动状态，例如降低调光器电流，同时允许调光器从交流（AC）电源电压的周期到周期正常工作。 在至少一个实施例中，当调光器以由调光器输入设置指示的正确相位角传导时，调光器正常工作，并避免在导通时过早复位。 在至少一个实施例中，通过协调功能（i），（ii），（iii）和（iv），控制器控制与基于三端双向可控硅的调光器兼容的功率转换器系统。

公开(公告)号：US08242714B2

公开(公告)日：2012-08-14

申请号：US12971412

申请日：2010-12-17

申请人： Russell Weightman ,  Mark S. Taipale

发明人： Russell Weightman ,  Mark S. Taipale

IPC分类号： H05B41/36

CPC分类号： H05B39/08 ,  H05B41/3924 ,  Y02B20/19 ,  Y10S315/04

摘要： A dimmer switch for controlling the intensity of a dimmable screw-in compact fluorescent lamp provides smooth dimming of the fluorescent lamp and prevents flickering of the lamp due to multiple re-strikes. The dimmer switch prevents multiple re-strikes by avoiding multiple firings of a controllably conductive switching device of the dimmer circuit by limiting the high-end light intensity of the fluorescent lamp. Specifically, the dimmer switch limits the length of a conduction interval of the controllably conductive switching device to less than approximately 75% of each half-cycle. The dimmer switch may include a user-accessible adjustment actuator for changing the dimmer switch between an incandescent operating mode and a screw-in compact fluorescent mode. The dimmer switch may also be operable to automatically change the dimmer switch between the incandescent operating mode and the screw-in compact fluorescent mode by detecting the occurrence of the multiple firings of the controllably conductive switching device.

公开(公告)号：US08222833B2

公开(公告)日：2012-07-17

申请号：US12729393

申请日：2010-03-23

申请人： Yu-Chen Lin

发明人： Yu-Chen Lin

IPC分类号： G05F1/00

CPC分类号： H05B35/00 ,  A01G7/045 ,  F21V23/04 ,  F21W2131/40 ,  F21Y2103/00 ,  F21Y2103/10 ,  F21Y2113/00 ,  F21Y2113/13 ,  F21Y2113/20 ,  F21Y2115/10 ,  Y02P60/149 ,  Y10S315/04

摘要： An illumination device for plants includes a lighting unit mounted on a lamp seat and including a cold cathode fluorescent lamp and a light emitting diode (LED) unit. A driving unit is mounted to the lamp seat, is coupled to the cold cathode fluorescent lamp and the LED unit, and is operable so as to drive the cold cathode fluorescent lamp and the LED unit such that the cold cathode fluorescent lamp and the LED emit respectively color lights having respective wavelengths. A dimming unit is coupled to the driving unit, and is operable so as to output a dimming output to the driving unit. The driving unit drives the cold cathode fluorescent lamp and the LED unit based on the dimming output from the dimming unit so that the color light emitted by each of the cold cathode fluorescent lamp and the LED unit has a respective light intensity.

摘要翻译： 一种用于植物的照明装置，包括安装在灯座上并包括冷阴极荧光灯和发光二极管（LED）单元的照明单元。 驱动单元安装在灯座上，耦合到冷阴极荧光灯和LED单元，并且可操作以驱动冷阴极荧光灯和LED单元，使得冷阴极荧光灯和LED发射 分别具有各自的波长的彩色光。 调光单元耦合到驱动单元，并且可操作以将调光输出输出到驱动单元。 驱动单元基于来自调光单元的调光输出来驱动冷阴极荧光灯和LED单元，使得每个冷阴极荧光灯和LED单元发出的色光具有相应的光强度。

公开(公告)号：US08217591B2

公开(公告)日：2012-07-10

申请号：US12473821

申请日：2009-05-28

申请人： Joseph Paul Chobot ,  Michael James Harris ,  Paul Arthur Beck

发明人： Joseph Paul Chobot ,  Michael James Harris ,  Paul Arthur Beck

IPC分类号： H05B37/02

CPC分类号： H05B33/0815 ,  Y10S315/04

摘要： Lighting is controlled by receiving an input signal, determining whether the input signal is an AC signal or a DC signal and generating a dimming command signal based on the determination of whether the input signal is an AC signal or a DC signal. For example, determining whether the input signal is an AC signal or a DC signal may include generating an average signal indicative of an average duty cycle of the input signal and determining whether the average signal meets a predetermined criterion.

摘要翻译： 通过接收输入信号来控制照明，基于对输入信号是AC信号还是DC信号的确定，确定输入信号是AC信号还是DC信号，并产生调光命令信号。 例如，确定输入信号是AC信号还是DC信号可以包括产生指示输入信号的平均占空比的平均信号，并确定平均信号是否满足预定标准。

公开(公告)号：US08174204B2

公开(公告)日：2012-05-08

申请号：US12047269

申请日：2008-03-12

申请人： John L. Melanson

发明人： John L. Melanson

IPC分类号： H05B37/02

CPC分类号： H05B33/0815 ,  H05B33/0818 ,  Y02B20/347 ,  Y10S315/04

摘要： A light emitting diode (LED) lighting system includes a power factor correction (PFC) controller that determines at least one power factor correction control parameter from phase delays of a phase modulated signal. In at least one embodiment, a peak voltage of the phase modulated signal is a PFC control parameter used bit the PFC controller to control power factor correction and generation of a link voltage by a PFC LED driver circuit. The phase delays are related to a peak voltage of the phase modulated signal. Thus, in at least one embodiment, detecting the phase delay in one or more cycles of the phase modulated signal allows the PFC controller to determine the peak voltage of the phase modulated signal.

摘要翻译： 发光二极管（LED）照明系统包括功率因数校正（PFC）控制器，其从相位调制信号的相位延迟确定至少一个功率因数校正控制参数。 在至少一个实施例中，相位调制信号的峰值电压是PFC控制参数，用于控制功率因数校正并由PFC LED驱动器电路产生链路电压。 相位延迟与相位调制信号的峰值电压有关。 因此，在至少一个实施例中，在相位调制信号的一个或多个周期中检测相位延迟允许PFC控制器确定相位调制信号的峰值电压。

公开(公告)号：US20120074853A1

公开(公告)日：2012-03-29

申请号：US13313307

申请日：2011-12-07

申请人： Russell Weightman ,  Mark S. Taipale

发明人： Russell Weightman ,  Mark S. Taipale

IPC分类号： H05B37/02

CPC分类号： H05B39/08 ,  H05B41/3924 ,  Y02B20/19 ,  Y10S315/04

摘要： A dimmer switch for controlling the intensity of a dimmable screw-in compact fluorescent lamp provides smooth dimming of the fluorescent lamp and prevents flickering of the lamp due to multiple re-strikes. The dimmer switch prevents multiple re-strikes by avoiding multiple firings of a controllably conductive switching device of the dimmer circuit by limiting the high-end light intensity of the fluorescent lamp. Specifically, the dimmer switch limits the length of a conduction interval of the controllably conductive switching device to less than approximately 75% of each half-cycle. The dimmer switch may include a user-accessible adjustment actuator for changing the dimmer switch between an incandescent operating mode and a screw-in compact fluorescent mode. The dimmer switch may also be operable to automatically change the dimmer switch between the incandescent operating mode and the screw-in compact fluorescent mode by detecting the occurrence of the multiple firings of the controllably conductive switching device.

公开(公告)号：US08093839B2

公开(公告)日：2012-01-10

申请号：US12610327

申请日：2009-11-01

申请人： Xiaoping Jin ,  Simon Mark Kahn

发明人： Xiaoping Jin ,  Simon Mark Kahn

IPC分类号： H05B37/02

CPC分类号： H05B41/2855 ,  Y02B20/186 ,  Y10S315/04

摘要： A cold cathode fluorescent lamp controller constituted of a pulse generator exhibiting a cycle period; a burst dimming control operative to set a burst dimming duty cycle for the pulse generator; a comparator arranged to receive a signal indicative of the value of current through a load driven by the pulse generator and compare the received signal to a reference signal; an error detection circuit operative to shut down the pulse generator responsive to an output of the comparator indicating that the received signal is less than the reference signal for a predetermined number of cycles of the pulse generator; and a disable circuit arranged to prevent, when the set burst dimming duty cycle is less than a predetermined value, the shut down of the pulse generator responsive to the output of the comparator indicating the received signal is less than the reference signal.

摘要翻译： 一种由显示循环周期的脉冲发生器构成的冷阴极荧光灯控制器; 脉冲调光控制，用于设置脉冲发生器的脉冲调制占空比; 比较器，被布置成接收指示由脉冲发生器驱动的负载的电流值的信号，并将接收的信号与参考信号进行比较; 误差检测电路，用于响应于所述比较器的输出，针对所述脉冲发生器的预定数量的周期来指示接收信号小于参考信号的脉冲发生器; 以及禁止电路，其被布置为当所设置的脉冲串调光占空比小于预定值时，防止响应于指示接收信号的比较器的输出的脉冲发生器的停止小于参考信号。

公开(公告)号：US20110285293A1

公开(公告)日：2011-11-24

申请号：US13192368

申请日：2011-07-27

申请人： Thomas E. STACK

发明人： Thomas E. STACK

IPC分类号： H05B37/02

CPC分类号： H05B41/2851 ,  H05B41/2855 ,  Y02B20/186 ,  Y10S315/04 ,  Y10S315/07

摘要： A shut-down circuit configured for use with an electronic ballast coupled to a lamp in a control path includes a device for sensing the electrical energy associated with the control path, and a sensing circuit for shutting down the ballast in the event that the energy does not conform to a predetermined condition. The sensed energy may be current indicative of lamp installation or short circuit, or voltage indicative of arcing or open circuit. The device for sensing the electrical energy associated with the control path may be an isolation transformer, or alternative devices such as optical isolators may be employed. The circuitry may further include electronic componentry to disable the sensing circuit during initial energization of the lamp. In one disclosed example, the sensing circuit includes a node that should be at or near a predetermined electrical potential when the lamp is operating properly, and a switch such as a Schmitt trigger coupled to the node that turns on or off to shut down the ballast if the node is not at or near the predetermined electrical potential. In an implementation used to detect voltage fluctuations indicative of arcing, the circuitry may include a high-pass filter or differentiator and detector to detect high-frequency noise. Alternatively, a phase-locked loop may be coupled to a low-pass filter to detect high-frequency noise indicative of arcing. In another alternative implementation, a microprocessor performing a digital signal processing algorithm may determine the presence of an abnormal condition.

摘要翻译： 配置用于与控制路径中的灯耦合的电子镇流器的关闭电路包括用于感测与控制路径相关联的电能的装置，以及用于在能量发生的情况下关闭镇流器的感测电路 不符合预定条件。 感测到的能量可以是指示灯安装或短路的电流，或指示电弧或开路的电压。 用于感测与控制路径相关联的电能的装置可以是隔离变压器，或者可以采用诸如光隔离器的替代装置。 电路还可以包括在灯的初始通电期间禁用感测电路的电子组件。 在一个公开的示例中，感测电路包括当灯正常工作时应该处于或接近预定电位的节点，以及耦合到节点的开关（例如施密特触发器），该开关被接通或关闭以关闭镇流器 如果节点不在或接近预定电位。 在用于检测指示电弧放电的电压波动的实施中，电路可以包括高通滤波器或微分器和检测器以检测高频噪声。 或者，锁相环可耦合到低通滤波器以检测指示电弧的高频噪声。 在另一替代实现中，执行数字信号处理算法的微处理器可以确定是否存在异常状况。

公开(公告)号：US07952303B2

公开(公告)日：2011-05-31

申请号：US12193521

申请日：2008-08-18

申请人： Wei Xiong ,  Christopher Radzinski

发明人： Wei Xiong ,  Christopher Radzinski

IPC分类号： H05B37/02

CPC分类号： H05B41/295 ,  Y10S315/04

摘要： An electronic ballast has control circuitry to operate a gas discharge lamp in both full and dimmed illumination modes. The electronic ballast also includes a full power circuit having a power control coupled to the dimming controller output to receive the dimming controller signal, a filament heating circuit having a heating input coupled to a reduced power circuit to receive a reduced power signal and a heating output that can couple to the filaments of one or more lamps. When the full power circuit receives the dimming controller signal, via the power control, and the dimming controller signal is not in the dimming request range (i.e. the full illumination mode has been selected), the full power circuit generates a full power signal capable of driving/operating the lamp(s) in the full illumination mode. When the reduced power signal is present, the filament heating circuit generates and provides a filament heating signal to the filaments, via the heating output.

摘要翻译： 电子镇流器具有控制电路，用于在充满和暗淡的照明模式下操作气体放电灯。 电子镇流器还包括具有耦合到调光控制器输出以接收调光控制器信号的功率控制的全功率电路，灯丝加热电路，其具有耦合到降低功率电路的加热输入以接收降低的功率信号和加热输出 这可以耦合到一个或多个灯的灯丝。 当全功率电路接收到调光控制器信号时，通过功率控制，并且调光控制器信号不处于调光请求范围内（即，已经选择了全照明模式），全电源电路产生能够 在全照明模式下驱动/操作灯。 当存在降低的功率信号时，灯丝加热电路经由加热输出产生灯丝加热信号到灯丝。

公开(公告)号：US20110018611A1

公开(公告)日：2011-01-27

申请号：US12897287

申请日：2010-10-04

申请人： Robert C. Newman, JR. ,  Jeremy Nearhoof ,  Gregory Altonen ,  Daniel F. Carmen

发明人： Robert C. Newman, JR. ,  Jeremy Nearhoof ,  Gregory Altonen ,  Daniel F. Carmen

IPC分类号： H03K17/96 ,  H05B37/02

CPC分类号： H05B39/086 ,  G06F3/03547 ,  G06F3/045 ,  Y10S315/04 ,  Y10S323/904 ,  Y10T307/786

摘要： A user interface for a lighting control, the user interface comprising a touch sensitive front surface having a longitudinal axis and a lateral axis; a four-wire resistive touch pad responsive to a point actuation on the touch sensitive front surface, the resistive touch pad having a longitudinal resistive element for providing a first control signal representative of the position of the point actuation along the longitudinal axis, and a lateral resistive element for providing a second control signal representative of the position of the point actuation along the lateral axis; a controller operable to receive the first and second control signals; a first capacitor adapted to be coupled between the lateral resistive element and a circuit common, the first capacitor operable to charge and discharge through the longitudinal resistive element of the resistive touch pad to stabilize the first control signal; and first, second, and third switches responsive to the controller, each of the switches comprising first, second, and third terminals, and operable to be controlled between a first position in which the first terminal is electrically connected to the second terminal, and a second position in which the first terminal is electrically connected to the third terminal, the switches coupled to the touch sensitive device, such that when the controller controls all of the switches to the first position, a DC supply voltage is coupled across the longitudinal resistive element, the controller is coupled to the lateral resistive element, and the first capacitor is coupled between the lateral resistive element and the circuit common, and when the controller controls all of the switches to the second position, the DC supply voltage is coupled across the lateral resistive element and the controller is coupled to the longitudinal resistive element; wherein the controller is operable to determine, from the second control signal, if the touch sensitive front surface is presently being actuated, and to determine, from the first control signal, the position of the point actuation along the longitudinal axis.