公开(公告)号：US08063581B2

公开(公告)日：2011-11-22

申请号：US12303376

申请日：2007-06-20

申请人： Roelf Van Der Wal ,  Zadok Vitalis Socrates Kroeze

发明人： Roelf Van Der Wal ,  Zadok Vitalis Socrates Kroeze

IPC分类号： G05F37/02 ,  H05B37/00

CPC分类号： H05B33/0848 ,  H05B33/0815

摘要： A drive circuit (1) for driving a load (3) comprises: a power supply (10) for supplying an output current (IL); a controller (20) for controlling the power supply; a current sensor (25) for generating a current sense signal (V25); a controllable switch (30) in series with the output (2a, 2b), the switch being controlled by a mode controller (50); wherein the mode controller in a reduced brightness mode generates its switch control signal (SLC) for the switch for alternatively opening and closing the switch. At the end of a current pulse, an average current value averaged over the pulse duration is calculated, compared with a reference value (VREF), and, if said average value is larger than the reference value, a duration for the next pulse pause is calculated such that an average value averaged over the entire pulse period is equal to the reference value.

摘要翻译： 用于驱动负载（3）的驱动电路（1）包括：用于提供输出电流（IL）的电源（10）; 用于控制电源的控制器（20）; 用于产生电流感测信号（V25）的电流传感器（25）; 与所述输出（2a，2b）串联的可控开关（30），所述开关由模式控制器（50）控制; 其中以减小亮度模式的模式控制器产生用于开关的切换控制信号（SLC），用于交替地打开和关闭开关。 在电流脉冲结束时，与参考值（VREF）相比，计算在脉冲持续时间上平均的平均电流值，并且如果所述平均值大于参考值，则下一脉冲暂停的持续时间为 被计算为使得在整个脉冲周期上平均的平均值等于参考值。

公开(公告)号：US06927545B2

公开(公告)日：2005-08-09

申请号：US10385144

申请日：2003-03-10

申请人： Richard S. Belliveau

发明人： Richard S. Belliveau

IPC分类号： H05B37/02 ,  G05F37/02 ,  G03B21/26

CPC分类号： H05B37/029

摘要： An improved multiparameter lighting fixture is provided comprising a base, a yoke, a lamp housing, and a communication port for receiving address and command signals. The lamp housing may be comprised of a lamp, a light valve, and a lens. The lamp, the light valve and the lens may cooperate to project, for example, an ownership image, a fixture identifier image, a time identifier image, a show identifier image, a content identifier image, or an effects identifier image. The lamp, the light valve and the lens may cooperate to produce a first image on a projection surface and a second image may be created from the first image by applying an interactive effect to the first image in response to an image captured by a camera.

摘要翻译： 提供了一种改进的多参数照明器具，其包括基座，轭，灯壳体和用于接收地址和命令信号的通信端口。 灯壳体可以由灯，光阀和透镜组成。 灯，光阀和透镜可以协作来投影例如所有权图像，灯具标识符图像，时间标识符图像，节目标识符图像，内容标识符图像或效果标识符图像。 灯，光阀和透镜可以协作以在投影表面上产生第一图像，并且可以响应于由相机拍摄的图像向第一图像施加交互效果，从第一图像创建第二图像。

公开(公告)号：US08432106B2

公开(公告)日：2013-04-30

申请号：US12937936

申请日：2009-04-06

申请人： Adam Horvath ,  Hans Hoschopf

发明人： Adam Horvath ,  Hans Hoschopf

IPC分类号： H05B41/00 ,  G05F37/02

CPC分类号： H05B33/0818 ,  H05B33/0851 ,  Y02B20/346

摘要： A method for operating a controlled illumination apparatus, the illumination apparatus comprising at least one pulse-width modulation (PWM)-controlled LED, the method comprising carrying out a duty cycle sweep of the PWM signal driving the LED while sensing at least one parameter indicative of the power consumption of the LED to compute a curve reflecting the duty-cycle dependency of the power efficiency of the LED.

摘要翻译： 一种用于操作受控照明装置的方法，所述照明装置包括至少一个脉冲宽度调制（PWM）控制的LED，所述方法包括执行驱动LED的PWM信号的占空比扫描，同时感测至少一个参数指示 的LED的功耗来计算反映LED的功率效率的占空比依赖性的曲线。

公开(公告)号：US07642734B2

公开(公告)日：2010-01-05

申请号：US11339492

申请日：2006-01-26

申请人： Paolo De Anna

发明人： Paolo De Anna

IPC分类号： G05F37/02

CPC分类号： H05B33/0848 ,  H05B41/3921

摘要： Dimming a light source such as a LED over a dimming range (0%-100%) involves adjusting at least one of the intensity (I) and the duty-cycle (DR) of a current flowing through the light source. The dimming range includes at least one portion (L%-H%; 0%-H%) where the light source is fed with a current whose intensity (I) is switched with a given duty cycle (DR) between a non-zero on value and zero, the non-zero on value being a fraction of the rated value (Irated), whereby joint CC and PWM dimming is achieved.

摘要翻译： 在诸如LED的调光范围（0％-100％）之间调光光源涉及调节流过光源的电流的强度（I）和占空比（DR）中的至少一个。 调光范围包括至少一部分（L％-H％; 0％-H％），其中光源被馈送电流，其强度（I）以给定的占空比（DR）在非零 on值和零，非零开启值是额定值（Irated）的一小部分，从而实现了联合CC和PWM调光。

公开(公告)号：US07592754B2

公开(公告)日：2009-09-22

申请号：US11376081

申请日：2006-03-15

申请人： Frederick Roland Schindler

发明人： Frederick Roland Schindler

IPC分类号： G05F37/02 ,  F21V23/04 ,  F21V7/04

CPC分类号： H05B33/0827

摘要： An LED drive circuit includes a current source configured to electrically drive an LED. In one configuration, the current source forms part of an integrated circuit that requires a relatively small amount of voltage for operation. As such, separate voltage sources can be electrically coupled to the LED and integrated circuit respectively. For example, a first voltage source provides a source voltage to the LED that is sufficient to allow operation the LED and a second voltage source provides a source voltage to the integrated circuit that is sufficient to allow operation of the integrated circuit but that is less than a voltage operable to activate the LED. As a result, a low voltage source can be used as a supply for all of the circuitry associated with the integrated circuit, including the current source, without sacrificing the supply voltage used to drive the LED.

摘要翻译： LED驱动电路包括被配置为电驱动LED的电流源。 在一种配置中，电流源形成了需要相对较小量的电压进行操作的集成电路的一部分。 因此，单独的电压源可以分别电耦合到LED和集成电路。 例如，第一电压源向LED提供足以允许LED操作的源电压，并且第二电压源向集成电路提供足以允许集成电路的操作的源电压，但小于 用于激活LED的电压。 因此，低电压源可以用作与包括电流源在内的集成电路相关联的所有电路的电源，而不牺牲用于驱动LED的电源电压。

公开(公告)号：US08242704B2

公开(公告)日：2012-08-14

申请号：US12207353

申请日：2008-09-09

申请人： Patrice R. Lethellier

发明人： Patrice R. Lethellier

IPC分类号： H05B41/16 ,  G05F37/02

CPC分类号： H05B33/089 ,  H05B33/0806 ,  H05B33/0809 ,  H05B33/0815 ,  H05B33/083 ,  H05B33/0845 ,  H05B37/0227

摘要： An apparatus, method and system are disclosed for supplying power to a load such as a plurality of light emitting diodes. A representative apparatus comprises a primary module, a first secondary module couplable to a first load, and a second secondary module couplable to a second load. The primary module comprises a transformer having a transformer primary. The first secondary module comprises a first transformer secondary magnetically coupled to the transformer primary, and the second secondary module comprises a second transformer secondary magnetically coupled to the transformer primary, with the second secondary module couplable in series through the first or second load to the first secondary module.

摘要翻译： 公开了一种用于向诸如多个发光二极管的负载供电的装置，方法和系统。 代表性装置包括主模块，可耦合到第一负载的第一辅助模块和可耦合到第二负载的第二辅助模块。 主模块包括具有变压器初级的变压器。 第一次级模块包括磁耦合到变压器初级的第一变压器，并且第二次级模块包括磁耦合到变压器初级的第二变压器次级，其中第二次级模块可通过第一或第二负载串联连接到第一变压器 二级模块

公开(公告)号：US08035318B2

公开(公告)日：2011-10-11

申请号：US12165347

申请日：2008-06-30

申请人： Andrzej Bobel

发明人： Andrzej Bobel

IPC分类号： H05B41/36 ,  G05F37/02

CPC分类号： H05B41/295 ,  Y02B20/19

摘要： An electronic ballast circuit and related method for enabling full range dimming of a gas discharge load such as a compact fluorescent lamp.

摘要翻译： 一种电子镇流器电路和相关方法，用于实现诸如紧凑型荧光灯之类的气体放电负载的全范围调光。

公开(公告)号：US07573205B2

公开(公告)日：2009-08-11

申请号：US11267007

申请日：2005-11-04

申请人： Yasuo Hosaka ,  Yoshihisa Konno

发明人： Yasuo Hosaka ,  Yoshihisa Konno

IPC分类号： H05B41/16 ,  G05F37/02

CPC分类号： H05B41/2851

摘要： An economical device for lighting lamps such as discharge tubes. The lamp-lighting apparatus has an inverter transformer, a switching circuit connected with the primary winding of the inverter transformer and acting to perform switching for converting a voltage from an input power supply, a shunt transformer connected in series with the secondary winding of the inverter transformer, lamps connected in series with the shunt transformers, and a control circuit for producing a control signal to control the switching performed by the switching circuit based on the voltages at the junctions of the shunt transformer and each of the lamps without directly detecting the voltage applied to the secondary winding of the inverter transformer. The number of protective circuits can be reduced. Consequently, the cost can be reduced.

摘要翻译： 用于照明灯的经济装置，例如放电管。 灯具照明装置具有逆变器变压器，与逆变变压器的初级绕组连接的开关电路，用于进行用于转换来自输入电源的电压的开关，与逆变器的次级绕组串联连接的并联变压器 变压器，与分流变压器串联的灯，以及控制电路，用于产生控制信号，以根据并联变压器和每个灯的接点处的电压来控制由开关电路执行的开关，而不直接检测电压 应用于逆变变压器的次级绕组。 可以减少保护电路的数量。 因此，可以降低成本。