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21. 发明申请

US20080054819A1 Electrical Circuit With Dual Stage Resonant Circuit For Igniting A Gas Discharge Lamp 失效
标题翻译：具有用于点燃气体放电灯的双级谐振电路的电路
公开(公告)号：US20080054819A1
公开(公告)日：2008-03-06
申请号：US11469926
申请日：2006-09-05
申请人： Xiaoli Yao , Rajendra Kumar Pokharna , Viktor Karoly Varga , Chao Yang , Yingqi Zhang
发明人： Xiaoli Yao , Rajendra Kumar Pokharna , Viktor Karoly Varga , Chao Yang , Yingqi Zhang
IPC分类号： H05B41/16
CPC分类号： H05B41/042 , H05B41/2827
摘要： A circuit such as may be used for igniting and operating a gas discharge lamp is provided. The circuit includes a resonant circuit connected to receive a variable voltage output signal from an inverter. The resonant circuit includes a first circuit stage and a second circuit stage. The second circuit stage includes a resonant tank circuit configured to generate a resonant output voltage when a switching frequency of the inverter matches a resonant frequency of the resonant circuit. The first circuit stage includes at least one current-suppressing element for reducing an effect of a resonant current that flows in the resonant circuit on a switching current that flows in the inverter.
摘要翻译：提供诸如可用于点燃和操作气体放电灯的电路。电路包括连接以从逆变器接收可变电压输出信号的谐振电路。谐振电路包括第一电路级和第二电路级。第二电路级包括谐振回路，其被配置为当反相器的开关频率与谐振电路的谐振频率匹配时产生谐振输出电压。第一电路级包括至少一个电流抑制元件，用于减小在谐振电路中流动的谐振电流对在逆变器中流动的开关电流的影响。

22. 发明授权

US09018845B2 Circuit for adjusting LED current 有权
标题翻译： LED电流调节电路
公开(公告)号：US09018845B2
公开(公告)日：2015-04-28
申请号：US14000501
申请日：2011-07-21
申请人： Liang'an Ge , Xiaoli Yao
发明人： Liang'an Ge , Xiaoli Yao
IPC分类号： H05B37/00 , H05B39/00 , H05B41/00 , H05B33/08
CPC分类号： H05B33/0815 , H05B33/0827 , H05B33/0866 , Y02B20/347
摘要： Provided is a circuit for adjusting light-emitting diode (LED) current; the circuit comprises: a single-output constant current source (21), a multi-path LED output circuit (22) and a control bus (20) connected to the multi-path LED output circuit (22); any given LED output circuit comprises: a load circuit (23), an adjustment circuit (24), a current regulation circuit (25) and an adjustment control circuit (26). The circuit for adjusting LED current provided in the technical solution of the present invention adjusts the current of each LED output circuit via the load circuit, the adjustment circuit, the current regulation circuit and the adjustment control circuit, thus adjusting characteristic parameters such as color, color temperature, color rendering index, brightness and the like of the LED light source, thereby avoiding the problem of high cost caused by using multi-path constant current DC/DC circuit to adjust the current of each path.
摘要翻译：提供了用于调节发光二极管（LED）电流的电路; 该电路包括：单输出恒流源（21），连接到多路LED输出电路（22）的多路LED输出电路（22）和控制总线（20）。任何给定的LED输出电路包括：负载电路（23），调节电路（24），电流调节电路（25）和调节控制电路（26）。本发明的技术方案中提供的用于调节LED电流的电路通过负载电路，调节电路，电流调节电路和调节控制电路调节每个LED输出电路的电流，从而调整诸如颜色，色温，显色指数，亮度等，从而避免了使用多路恒流DC / DC电路调节各路径的电流引起的成本高的问题。

23. 发明授权

US08866409B2 Constant-current LED driver circuit and output voltage adjustable circuit and method thereof 有权
标题翻译：恒流LED驱动电路及其输出电压可调电路及其方法
公开(公告)号：US08866409B2
公开(公告)日：2014-10-21
申请号：US13700352
申请日：2010-11-10
申请人： Liang'an Ge , Xiaoli Yao , Guichao Hua , Lijun Ren
发明人： Liang'an Ge , Xiaoli Yao , Guichao Hua , Lijun Ren
IPC分类号： G05F1/00
CPC分类号： G05F1/10 , H05B33/0815 , H05B33/0827 , H05B37/02 , Y02B20/347
摘要： A constant-current Light Emitting Diode (LED) driver circuit is provided, and the circuit includes: an output voltage adjustable circuit and at least one path of LED load, wherein the output voltage adjustable circuit comprises: a switch converting main circuit, an output characteristic parameter sampling circuit, and an output voltage controller. The output voltage controller is used to adjust the output voltage of the switch converting main circuit according to the variation relationship between the sampling signal output by the output characteristic parameter sampling circuit and the output voltage, determine the adjustive direction of the output voltage magnitude of the switch converting main circuit according to the change of the sampling signal, adjust the magnitude of the output voltage of the switch converting main circuit according to the preset step, and finally make the output voltage equal to the voltage of one path of LED load with the highest voltage or the difference between the output voltage and the voltage of one path of LED load voltage with the highest voltage within the predetermined range. The present solution implements reducing the connection complexity and power dissipation on the base of controlling the multi-path constant-current LED.
摘要翻译：提供恒流发光二极管（LED）驱动器电路，该电路包括：输出电压可调节电路和至少一个LED负载路径，其中输出电压可调电路包括：开关转换主电路，输出特征参数采样电路和输出电压控制器。输出电压控制器用于根据输出特性参数采样电路输出的采样信号与输出电压之间的变化关系来调节开关转换主电路的输出电压，确定输出电压幅度的调整方向根据采样信号的变化开关转换主电路，根据预设步骤调整开关转换主电路的输出电压幅值，最后使输出电压等于LED负载的一路径电压最高电压或输出电压与LED负载电压的一个路径的电压之间的差异，具有在预定范围内的最高电压。本解决方案在控制多路恒流LED的基础上降低了连接复杂性和功耗。

24. 发明授权

US08674621B2 Constant current control circuit with multiple outputs for LED driver 有权
标题翻译： LED驱动器的多路输出恒流控制电路
公开(公告)号：US08674621B2
公开(公告)日：2014-03-18
申请号：US12896445
申请日：2010-10-01
申请人： Liangan Ge , Guichao Hua , Xiaoli Yao , Xinke Wu
发明人： Liangan Ge , Guichao Hua , Xiaoli Yao , Xinke Wu
IPC分类号： H05B37/02 , H05B41/36
CPC分类号： H05B33/0812 , H05B33/0824 , Y02B20/345
摘要： A constant current control circuit with multiple outputs for a LED driver, the circuit including a single-output constant current power supply, and multiple output circuits, each output circuit comprising a current sharing circuit, a current sharing control circuit and a LED load. The LED load and the current sharing circuit are in series and form a series loop with a first terminal and a second terminal of the series loop connected to a first output terminal and a second output terminal of the constant current power supply.
摘要翻译：一种用于LED驱动器的多个输出的恒定电流控制电路，包括单输出恒流电源的电路和多个输出电路，每个输出电路包括电流共享电路，电流共享控制电路和LED负载。 LED负载和电流共享电路串联并形成串联回路，其中串联回路的第一端子和第二端子连接到恒流电源的第一输出端子和第二输出端子。

25. 发明申请

US20130241433A1 METHOD, APPARATUS AND SYSTEM FOR CONTROLLING LIGHT SOURCE 审中-公开
标题翻译：方法，控制光源的装置和系统
公开(公告)号：US20130241433A1
公开(公告)日：2013-09-19
申请号：US13881294
申请日：2011-08-23
申请人： Liang'an Ge , Guichao Hua , Xiaoli Yao , Lijun Ren
发明人： Liang'an Ge , Guichao Hua , Xiaoli Yao , Lijun Ren
IPC分类号： H05B37/02
CPC分类号： H05B37/02 , H05B33/0815 , H05B33/0827 , H05B33/083 , H05B33/0866 , H05B37/0263 , Y02B20/346
摘要： Provided are a method, apparatus and system for controlling a light source. The method comprises: acquiring an adjustment signal and determining a dimming item according to the adjustment signal; the dimming item being composed of the value and/or value range of at least one characteristics parameter of a pulse drive signal; converting the adjustment signal into the pulse drive signal indicated by the dimming item; controlling an adjustment switch by means of the pulse drive signal, so as to output a voltage including a chopped wave voltage corresponding to the dimming item, thereby transmitting adjustment information about the colour and/or brightness of the light source by means of the voltage including the chopped wave voltage. The method, apparatus and system can achieve the function of adjusting the colour and/or brightness of the light source.
摘要翻译：提供了一种用于控制光源的方法，装置和系统。该方法包括：根据调整信号获取调整信号并确定调光项; 所述调光项目由脉冲驱动信号的至少一个特性参数的值和/或值范围组成; 将调整信号转换成由调光项目指示的脉冲驱动信号; 通过脉冲驱动信号控制调节开关，以输出包括对应于调光项目的斩波波电压的电压，从而通过包括电压的电压来发送关于光源的颜色和/或亮度的调整信息斩波电压。该方法，装置和系统可以实现调节光源的颜色和/或亮度的功能。

26. 发明申请

US20110080102A1 HIGH EFFICIENCY CONSTANT CURRENT LED DRIVER 审中-公开
标题翻译：高效率恒流LED驱动器
公开(公告)号：US20110080102A1
公开(公告)日：2011-04-07
申请号：US12896346
申请日：2010-10-01
申请人： Liangan Ge , Xiaoli Yao , Guichao Hua
发明人： Liangan Ge , Xiaoli Yao , Guichao Hua
IPC分类号： H05B37/02
CPC分类号： H05B33/0815 , H05B33/0827 , Y02B20/348
摘要： The present invention discloses a high efficiency constant current LED driver, which comprises a rectification bridge, a PFC main circuit, an isolated DC/DC converter, a PFC controller and a PFC bus control circuit. Since the input voltage is an intermediate PFC bus voltage, which varies with the output voltage of the DC/DC converter. When the isolated DC/DC converter is an LLC resonant circuit, the operating frequency of the LLC circuit is close to the resonant frequency within a wide output voltage range. Thus, the gain range and the operating frequency is narrow, and can enable the constant current module to work with a high efficiency at a wide output voltage range. When the isolated DC/DC converter is a symmetric half bridge, or an asymmetric half bridge or a full bridge circuit, the duty cycle of DC/DC circuit is close to 50% within a wide output voltage range. Thus, the changing range of the duty cycle of the DC/DC converter will be narrow and can improve the efficiency dramatically.
摘要翻译：本发明公开了一种高效率恒流LED驱动器，其包括整流桥，PFC主电路，隔离DC / DC转换器，PFC控制器和PFC总线控制电路。由于输入电压是中间PFC总线电压，其随着DC / DC转换器的输出电压而变化。当隔离的DC / DC转换器是LLC谐振电路时，LLC电路的工作频率接近于宽输出电压范围内的谐振频率。因此，增益范围和工作频率窄，可以使恒流模块在宽输出电压范围内以高效率工作。当隔离式DC / DC转换器为对称半桥，或非对称半桥或全桥电路时，DC / DC电路的占空比在宽输出电压范围内接近50％。因此，DC / DC转换器的占空比的变化范围将变窄，并且可以显着提高效率。

27. 发明申请

US20080055939A1 Electrical Circuit With Voltage Multiplier For Facilitating Ignition of a Gas Discharge Lamp 失效
标题翻译：带电压倍增器的电路，用于促进点火放电灯
公开(公告)号：US20080055939A1
公开(公告)日：2008-03-06
申请号：US11469945
申请日：2006-09-05
申请人： Xiaoli Yao , Rajendra Kumar Pokharna , Viktor Karoly Varga , Chao Yang , Yingqi Zhang
发明人： Xiaoli Yao , Rajendra Kumar Pokharna , Viktor Karoly Varga , Chao Yang , Yingqi Zhang
IPC分类号： H02M3/335
CPC分类号： H05B41/2881
摘要： An ignition circuit and method, as may be used for igniting a gas discharge lamp, are provided. The circuit includes a voltage multiplier circuit connected to receive a signal corresponding to a DC bus voltage level from a rectifier circuit. The voltage multiplier circuit includes first and second voltage storing circuits configured to each respectively store a voltage level corresponding to a first multiple of the DC bus voltage level (e.g., at least twice the DC bus voltage level). The voltage multiplier circuit further includes a peak voltage holding circuit connected to the first and second voltage storing circuits to accumulate a voltage level corresponding to a second multiple of the DC bus voltage level (e.g., at least four times the DC bus voltage level). The circuit further includes an ignition module having a transformer selectively connected by way of a switch to the voltage multiplier circuit through a primary winding to receive the voltage accumulated at the peak voltage holding circuit, and thereby generate an ignition pulse voltage applied to the lamp through a secondary winding of the transformer.
摘要翻译：提供了可以用于点燃气体放电灯的点火电路和方法。电路包括一个电压倍增器电路，连接成从整流电路接收对应于直流总线电压电平的信号。电压倍增器电路包括第一和第二电压存储电路，其被配置为分别存储与DC总线电压电平的第一倍数相对应的电压电平（例如，至少是DC总线电压电平的两倍）。电压倍增器电路还包括连接到第一和第二电压存储电路的峰值电压保持电路，以累积与DC总线电压电平的第二倍数相对应的电压电平（例如，至少是DC总线电压电平的四倍）。该电路还包括点火模块，其具有通过初级绕组选择性地连接到电压倍增器电路的变压器，以接收在峰值电压保持电路处积累的电压，从而产生施加到灯的点火脉冲电压变压器的次级绕组。

28. 发明授权

US09240711B2 Constant current control circuit with PFC function and its PFC circuit 有权
标题翻译：具有PFC功能的恒流控制电路及其PFC电路
公开(公告)号：US09240711B2
公开(公告)日：2016-01-19
申请号：US14346086
申请日：2012-08-06
申请人： Liang'an Ge , Xiaoli Yao
发明人： Liang'an Ge , Xiaoli Yao
IPC分类号： H02M1/42 , H02M7/217 , H05B33/08 , H02M3/07
CPC分类号： H02M1/4208 , H02M3/07 , H02M7/2176 , H05B33/0815 , H05B33/0848 , Y02B20/347 , Y02B70/126
摘要： A constant current control circuit with PFC function and its PFC circuit are provided. The PFC circuit comprises a valley-filled PFC circuit and a harmonic compensation circuit, whose output signal is supplied to the current control circuit. By adding the harmonic compensation circuit to the PFC circuit, the distortion of input current is decreased and the power factor is enhanced. Moreover, the whole circuit is simplified and its cost is reduced.
摘要翻译：提供具有PFC功能的恒流控制电路及其PFC电路。 PFC电路包括谷底填充PFC电路和谐波补偿电路，其输出信号被提供给电流控制电路。通过向PFC电路添加谐波补偿电路，输入电流的失真减小，功率因数提高。此外，整个电路简化，成本降低。

29. 发明授权

US09185756B2 Load driving device and system, limiting point control method and device 有权
标题翻译：负载驱动装置和系统，限制点控制方法和装置
公开(公告)号：US09185756B2
公开(公告)日：2015-11-10
申请号：US13995817
申请日：2011-08-23
申请人： Liang'an Ge , Guichao Hua , Xiaoli Yao , Yang Liu
发明人： Liang'an Ge , Guichao Hua , Xiaoli Yao , Yang Liu
IPC分类号： H05B37/02 , H05B33/08
CPC分类号： H05B33/0815 , H05B33/0827 , Y02B20/347
摘要： A load driving device and system, and a limiting point control method and device. The load driving device comprising: a voltage/current regulative main circuit placed under the control of an output current controller, for use in conducting a voltage conversion on an input voltage, and in supplying electric power to a subsequent load unit; a sampling unit connected to an output terminal of the main circuit, for use in sampling an output feature parameter of the main circuit; the output current controller, for use in controlling a limiting point of the main circuit, and on the basis of the adjustment direction of the limiting point and on changes of the output feature parameters of the main circuit before and after an adjustment, determining a steady working point for the main circuit, and controlling the main circuit to work at the steady working point. The load driving device and system enable an increase in driver reliability and a reduction in circuit complexity.
摘要翻译：负载驱动装置和系统，以及限制点控制方法和装置。所述负载驱动装置包括：电压/电流调节主电路，其设置在输出电流控制器的控制下，用于对输入电压进行电压转换，并向随后的负载单元供电; 连接到主电路的输出端的采样单元，用于对主电路的输出特性参数进行采样; 输出电流控制器，用于控制主电路的限制点，并且基于限制点的调节方向以及调整之前和之后的主电路的输出特征参数的变化，确定稳定的主电路工作点，控制主电路工作在稳定工作点。负载驱动装置和系统能够提高驱动器的可靠性和降低电路复杂度。

30. 发明授权

US09072126B2 Open-circuit protection circuit of constant current driving circuit for light emitting diodes 有权
标题翻译：用于发光二极管的恒流驱动电路的开路保护电路
公开(公告)号：US09072126B2
公开(公告)日：2015-06-30
申请号：US13814771
申请日：2010-12-31
申请人： Liang'an Ge , Xiaoli Yao
发明人： Liang'an Ge , Xiaoli Yao
IPC分类号： H05B37/00 , H05B41/00 , H05B37/02 , H05B33/08
CPC分类号： H05B37/02 , H05B33/0815 , H05B33/0887 , Y02B20/341
摘要： A open-circuit protection circuit of a constant current driving circuit for light emitting diodes is disclosed, which includes that: a transformer (Ta1), which has at least one secondary winding (WT1), is connected to at least two load branches (A1, A2); a commutating loop is composed of each load branches (A1, A2) and one secondary winding (WT1), wherein the secondary winding (WT1) has tap ends; a current sharing transformer (T1) is set in two neighbor load branch (A1, A2); each load branch (A1, A2) is separately connected to one open-circuit protection module (10). The open circuit protection module (10) includes: a detection control unit (101), used for outputting a control signal to a processing unit (102) when the detection control unit detects that the output voltages of each load branch (A1, A2) or the voltages proportionate to the output voltages are not less than a corresponding preset threshold; the processing unit (102), used for shorting one secondary sub winding (WT11, WT12) in the corresponding load branch (A1, A2) and a sharing current winding (W1) of the current sharing transformer (T1) in series with the secondary sub winding (WT11, WT12) when receiving the control signal. With the embodiments of the present invention, the cost and the bulk of the current sharing transformer (T1) can be reduced.
摘要翻译：公开了一种用于发光二极管的恒流驱动电路的开路保护电路，其包括：具有至少一个次级绕组（WT1）的变压器（Ta1）连接到至少两个负载分支（A1 ， A2）; 一个换向回路由每个负载分支（A1，A2）和一个次级绕组（WT1）组成，其中次级绕组（WT1）具有抽头端; 在两个相邻负载分支（A1，A2）中设置电流共享变压器（T1）; 每个负载分支（A1，A2）分别连接到一个开路保护模块（10）。开路保护模块（10）包括：检测控制单元（101），用于当检测控制单元检测到每个负载分支（A1，A2）的输出电压时，将控制信号输出到处理单元（102）或与输出电压成比例的电压不小于相应的预设阈值; 用于将相应的负载分支（A1，A2）中的一个次级次级绕组（WT11，WT12）与电流共享变压器（T1）的共享电流绕组（W1）与次级系统串联的短路处理单元（102）子绕组（WT11，WT12）接收到控制信号。利用本发明的实施例，可以减小电流共享变压器（T1）的成本和体积。

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