公开(公告)号：US08760083B2

公开(公告)日：2014-06-24

申请号：US13239072

申请日：2011-09-21

申请人： Qi Zhang ,  Weiqiang Zhang ,  Jianping Ying

发明人： Qi Zhang ,  Weiqiang Zhang ,  Jianping Ying

IPC分类号： H05B37/02

CPC分类号： H05B41/2886 ,  Y02B20/202

摘要： A ballast which controls the open-circuit voltage of the ballast. The ballast includes a power factor corrector (PFC) for receiving an AC input voltage and converting the AC input voltage into a power factor corrected DC voltage; a DC/DC converter connected to the PFC and having a switch placed at a low-voltage side of the DC/DC converter for converting the DC voltage of the PFC into a DC output voltage according to the switching operation of the switch; a controller connected to a control terminal of the switch of the DC/DC converter for sending a switching control signal to control the switch; and an open-circuit voltage controller for detecting a voltage associated with the open-circuit voltage of the ballast and regulating the duty ratio or pulse density or switching frequency of the switching control signal in response to the results of the detection, thereby controlling the open-circuit voltage.

摘要翻译： 控制镇流器的开路电压的镇流器。 镇流器包括用于接收AC输入电压并将AC输入电压转换成功率因数校正的DC电压的功率因数校正器（PFC）; DC / DC转换器，其连接到PFC并且具有放置在DC / DC转换器的低压侧的开关，用于根据开关的开关操作将PFC的DC电压转换为DC输出电压; 连接到DC / DC转换器的开关的控制端子的控制器，用于发送开关控制信号以控制开关; 以及开路电压控制器，用于检测与镇流器的开路电压相关联的电压，并响应于检测结果调节开关控制信号的占空比或脉冲密度或开关频率，从而控制开路 电路电压。

公开(公告)号：US08487550B2

公开(公告)日：2013-07-16

申请号：US13297460

申请日：2011-11-16

申请人： Weiqiang Zhang ,  Lizhi Xu ,  Qi Zhang ,  Jianping Ying

发明人： Weiqiang Zhang ,  Lizhi Xu ,  Qi Zhang ,  Jianping Ying

IPC分类号： H05B37/02

CPC分类号： H05B33/0815

摘要： Provided is a multi-channel LED driver circuit, including a power supply device for providing an independent voltage source; a plurality of regulating circuits connected to the power supply device and the light light-emitting diode arrays for receiving a voltage from the voltage source and providing a plurality of output currents to the light-emitting diode arrays, and thereby generating a plurality of error signals.

摘要翻译： 提供了一种多通道LED驱动器电路，包括用于提供独立电压源的电源装置; 连接到电源装置的多个调节电路和用于从电压源接收电压并向发光二极管阵列提供多个输出电流的发光二极管阵列，从而产生多个误差信号 。

公开(公告)号：US08436557B2

公开(公告)日：2013-05-07

申请号：US13073592

申请日：2011-03-28

申请人： Qi Zhang ,  Weiqiang Zhang ,  Jianping Ying

发明人： Qi Zhang ,  Weiqiang Zhang ,  Jianping Ying

IPC分类号： H05B41/36

CPC分类号： H05B41/2887 ,  Y02B20/202

摘要： The invention proposes a ballast control circuit and ballast control method for gas discharge lamp. The ballast control circuit and control method of the invention is advantageous by allowing the OFF time of the main switch of the ballast circuit to be fixed in order to prevent the transformer of the ballast circuit from being saturated when the gas discharge lamp is ignited and has a very low impedance, and allowing the OFF time of the main switch to be flexibly adapted when the gas discharge lamp is warmed up and its impedance has risen up to a certain value. The inventive ballast control circuit is configured to proceed with the switching of the main switch according to a lamp status signal indicative of the status of the lamp.

摘要翻译： 本发明提出了一种用于气体放电灯的镇流器控制电路和镇流器控制方法。 本发明的镇流器控制电路和控制方法的优点在于，当镇流器电路的主开关的断开时间被固定时，为了防止镇流器的变压器在气体放电灯被点燃时饱和，并具有 非常低的阻抗，并且当气体放电灯加热并且其阻抗已经升高到一定值时允许主开关的断开时间被灵活地适配。 本发明的镇流器控制电路被配置为根据指示灯的状态的灯状态信号进行主开关的切换。

公开(公告)号：US08564221B2

公开(公告)日：2013-10-22

申请号：US13242094

申请日：2011-09-23

申请人： Qi Zhang ,  Weiqiang Zhang ,  Jianping Ying

发明人： Qi Zhang ,  Weiqiang Zhang ,  Jianping Ying

IPC分类号： G05F1/00

CPC分类号： H05B41/38

摘要： A driving circuit system for a gas discharge lamp includes a power circuit having a switch for converting an input voltage into a lamp voltage for driving the gas discharge lamp, a lamp current detecting circuit connected to the power circuit or the gas discharge lamp for detecting a lamp current, a feedback circuit connected to the lamp current detecting circuit for generating a lamp current feedback signal, a constant power control circuit for generating a corrected current reference signal, and a power control circuit connected to the feedback circuit, the constant power control circuit, and the switch of the power circuit for generating a first modulating signal in accordance with the lamp current feedback signal and the corrected current reference signal for driving the switch to turn on or off, thereby substantially maintaining a lamp power of the gas discharge lamp at a constant value.

摘要翻译： 一种用于气体放电灯的驱动电路系统包括电源电路，其具有用于将输入电压转换为用于驱动气体放电灯的灯电压的开关，连接到电源电路的灯电流检测电路或用于检测气体放电灯的气体放电灯 连接到用于产生灯电流反馈信号的灯电流检测电路的反馈电路，用于产生校正的电流参考信号的恒功率控制电路和连接到反馈电路的功率控制电路，恒功率控制电路 以及用于根据灯电流反馈信号产生第一调制信号的电源电路的开关和用于驱动开关导通或关断的校正电流参考信号，从而基本上将气体放电灯的灯功率维持在 恒定值。

公开(公告)号：US20120049757A1

公开(公告)日：2012-03-01

申请号：US13073592

申请日：2011-03-28

申请人： Qi Zhang ,  Weiqiang Zhang ,  Jianping Ying

发明人： Qi Zhang ,  Weiqiang Zhang ,  Jianping Ying

IPC分类号： H05B41/36

CPC分类号： H05B41/2887 ,  Y02B20/202

摘要： The invention proposes a ballast control circuit and ballast control method for gas discharge lamp. The ballast control circuit and control method of the invention is advantageous by allowing the OFF time of the main switch of the ballast circuit to be fixed in order to prevent the transformer of the ballast circuit from being saturated when the gas discharge lamp is ignited and has a very low impedance, and allowing the OFF time of the main switch to be flexibly adapted when the gas discharge lamp is warmed up and its impedance has risen up to a certain value. The inventive ballast control circuit is configured to proceed with the switching of the main switch according to a lamp status signal indicative of the status of the lamp.

摘要翻译： 本发明提出了一种用于气体放电灯的镇流器控制电路和镇流器控制方法。 本发明的镇流器控制电路和控制方法的优点在于，当镇流器电路的主开关的断开时间被固定时，为了防止镇流器的变压器在气体放电灯被点燃时饱和，并具有 非常低的阻抗，并且当气体放电灯加热并且其阻抗已经升高到一定值时允许主开关的断开时间被灵活地适配。 本发明的镇流器控制电路被配置为根据指示灯的状态的灯状态信号进行主开关的切换。

公开(公告)号：US08884533B2

公开(公告)日：2014-11-11

申请号：US13572122

申请日：2012-08-10

申请人： Weiqiang Zhang ,  Lizhi Xu ,  Jianping Ying

发明人： Weiqiang Zhang ,  Lizhi Xu ,  Jianping Ying

IPC分类号： H05B37/00

CPC分类号： H05B33/0815 ,  H05B33/0821

摘要： The present application discloses a light emitting diode lighting device and a light emitting diode lamp, the light emitting diode lighting device includes: a fluorescent lamp ballast outputting an alternating current; and at least one first light emitting diode lamp coupled with the fluorescent lamp ballast, and comprising a rectifying and filtering circuit and at least one light emitting diode string coupled with the rectifying and filtering circuit. The present application directly replaces a conventional fluorescent lamp tube with a properly designed LED lamp without any other modifications when reinstallation a conventional fluorescent lamp lighting device into a light emitting diode lighting device, which may reduce the cost of reinstallation, and greatly facilitate the user.

摘要翻译： 本发明公开了一种发光二极管照明装置和发光二极管灯，所述发光二极管照明装置包括：输出交流电的荧光灯镇流器; 以及与荧光灯镇流器耦合的至少一个第一发光二极管灯，并且包括整流和滤波电路以及与整流和滤波电路耦合的至少一个发光二极管串。 本发明的应用将传统的荧光灯照明装置重新安装到发光二极管照明装置中时，直接用适当设计的LED灯代替常规的荧光灯管，而无需任何其它修改，这可能降低重新安装的成本，并且极大地方便了用户。

公开(公告)号：US08917033B2

公开(公告)日：2014-12-23

申请号：US13688703

申请日：2012-11-29

申请人： Lizhi Xu ,  Weiqiang Zhang ,  Jianping Ying

发明人： Lizhi Xu ,  Weiqiang Zhang ,  Jianping Ying

IPC分类号： H05B37/02 ,  H05B33/08

CPC分类号： H05B37/02 ,  H05B33/089 ,  Y02B20/341

摘要： The present application discloses an open circuit protecting circuit, an open circuit protecting method and an illuminating apparatus. The open circuit protecting circuit is configured in an apparatus with a LED load being supplied with power by a current source, and comprises: a switch circuit, a timer circuit and a detecting circuit. When the LED load malfunctions, the open circuit protecting circuit carries out the following operations: the detecting circuit sends an enabling signal to the timer circuit, the timer circuit sends a driving signal with a set time to the switch circuit and the switch circuit is in the on-state during the set time, so as to make the LED load be short circuited to protect the circuit from being damaged. The open circuit protecting circuit can also resume to normal work automatically after the open circuited malfunction is cleared, and thus a hot-plugging function can be realized.

摘要翻译： 本申请公开了一种开路保护电路，开路保护方法和照明装置。 开路保护电路配置在LED负载由电流源供电的装置中，包括：开关电路，定时器电路和检测电路。 当LED负载发生故障时，开路保护电路进行以下操作：检测电路向定时器电路发送使能信号，定时器电路向开关电路发送设定时间的驱动信号，开关电路处于 在设定时间内的导通状态，以使LED负载短路，以保护电路免受损坏。 开路保护电路也可以在断路故障后自动恢复正常工作，从而实现热插拔功能。

公开(公告)号：US08890424B2

公开(公告)日：2014-11-18

申请号：US13547213

申请日：2012-07-12

申请人： Lizhi Xu ,  Weiqiang Zhang ,  Jianping Ying ,  Ching-Ho Chou ,  Hsiang-Chen Wu

发明人： Lizhi Xu ,  Weiqiang Zhang ,  Jianping Ying ,  Ching-Ho Chou ,  Hsiang-Chen Wu

IPC分类号： H05B37/00

CPC分类号： H05B33/0815 ,  H05B33/0851 ,  Y02B20/347

摘要： The present invention provides an illumination device, an illumination system, and a lamp. The illumination system includes the illumination device and a light modulation module. The illumination device includes a light emitting diode (LED) array, an alternating current (AC) current source, and an output power control module. The AC current source is electrically coupled to the LED array. The output power control module is electrically coupled to the LED array and the AC current source. The LED array, the AC current source, and the output power control module together form a closed-loop control loop. The light modulation module is electrically coupled to the closed-loop control loop for modulating illumination brightness of the LED.

摘要翻译： 本发明提供一种照明装置，照明系统和灯。 照明系统包括照明装置和光调制模块。 照明装置包括发光二极管（LED）阵列，交流（AC）电流源和输出功率控制模块。 AC电流源电耦合到LED阵列。 输出功率控制模块电耦合到LED阵列和AC电流源。 LED阵列，AC电流源和输出功率控制模块一起形成闭环控制回路。 光调制模块电耦合到闭环控制环路，用于调制LED的照明亮度。

公开(公告)号：US08884542B2

公开(公告)日：2014-11-11

申请号：US13314820

申请日：2011-12-08

申请人： Weiqiang Zhang ,  Yan Zhong ,  Jianping Ying

发明人： Weiqiang Zhang ,  Yan Zhong ,  Jianping Ying

IPC分类号： H05B41/16 ,  H05B41/282 ,  H05B41/295

CPC分类号： H05B41/295 ,  H05B41/2828

摘要： An electronic ballast for driving a light-emitting device, includes a square wave generator having a plurality of switch elements for converting a DC input voltage into a square-wave AC voltage. A transformer has a driving winding and a plurality of inductive windings mutually connected with each other, in which at least a portion of the inductive windings are respectively connected to a control terminal of the switch element. A resonant circuit connects the driving winding and a light-emitting device and converts the square-wave voltage into an AC output voltage to drive the light-emitting device. An auxiliary control unit connected to the transformer regulates a voltage waveform of the driving winding or a voltage waveform of the inductive winding according to a control signal, thereby changing the voltage waveform of the inductive winding connected to the switch element to adjust the switching frequencies of the switch elements.

摘要翻译： 一种用于驱动发光器件的电子镇流器，包括具有用于将DC输入电压转换为方波AC电压的多个开关元件的方波发生器。 变压器具有彼此相互连接的驱动绕组和多个感应绕组，其中至少一部分感应绕组分别连接到开关元件的控制端子。 谐振电路连接驱动绕组和发光装置，并将方波电压转换成AC输出电压以驱动发光装置。 连接到变压器的辅助控制单元根据控制信号调节驱动绕组的电压波形或电感性绕组的电压波形，从而改变连接到开关元件的电感线圈的电压波形，以调节开关频率 开关元件。

公开(公告)号：US08692478B2

公开(公告)日：2014-04-08

申请号：US13242123

申请日：2011-09-23

申请人： Lizhi Xu ,  Weiqiang Zhang ,  Jianping Ying

发明人： Lizhi Xu ,  Weiqiang Zhang ,  Jianping Ying

IPC分类号： H05B41/16

CPC分类号： H05B33/0821 ,  H05B33/0809

摘要： The invention provides a current balancing circuit, which includes a plurality of light-emitting diode assemblies; an AC power generator for providing currents required by the light-emitting diode assemblies; and a plurality of current-equaling elements connected to the AC power generator, each of which is connected to a common mode connecting two light-emitting diode assemblies for balancing currents of the light-emitting diode assemblies.

摘要翻译： 本发明提供了一种电流平衡电路，其包括多个发光二极管组件; AC发电机，用于提供发光二极管组件所需的电流; 以及连接到AC发电机的多个电流均衡元件，每个电流均衡元件连接到连接两个用于平衡发光二极管组件的电流的发光二极管组件的共模。