公开(公告)号：US20230413398A1

公开(公告)日：2023-12-21

申请号：US18252475

申请日：2021-10-12

申请人： Ushio Denki Kabushiki Kaisha

发明人： Minoru FUKUDA ,  Takanori SAMEJIMA

IPC分类号： H05B41/282 ,  H05B41/38

CPC分类号： H05B41/282 ,  H05B41/382

摘要： The lighting circuit for lighting a dielectric barrier discharge lamp includes a direct-current power source, a transformer having a primary winding connected to a positive electrode-side terminal of the direct-current power source and a secondary winding connected to the dielectric barrier discharge lamp, a closed circuit in which the direct-current power source, the primary winding, and a switching element including a parasitic diode are serially connected, and a controller to perform ON/OFF control of the switching element. The controller executes a first step to shift the switching element from an ON state to an OFF state and a second step to shift the switching element from the OFF state to the ON state after a lapse of a predetermined OFF holding time from when a regenerative current flowing through the primary winding reaches a zero value after the first step.

公开(公告)号：US09848477B2

公开(公告)日：2017-12-19

申请号：US14413472

申请日：2014-03-12

申请人： SHENZHEN TECHONE TECH CO., LTD.

发明人： Shixue Cai ,  Zhongwei Jiang

IPC分类号： H05B37/02 ,  H05B41/282 ,  H05B41/285

CPC分类号： H05B37/0227 ,  H05B37/0245 ,  H05B41/282 ,  H05B41/2851

摘要： The invention discloses a method for controlling the time sharing starting of electronic ballasts and a delayed-started electronic ballast. According to the method, the electronic ballasts are delayed-started after being energized, and delay time for the delayed starting of the electronic ballasts is a random number acquired based on the temperature of the ballasts. The delayed-started electronic ballast includes an electronic ballast body and a delay switch. After the adoption of the technical scheme of the invention, a delayer with the delay time set by virtue of random numbers corresponding to different environmental temperature is additionally arranged in the ballast, and multiple ballasts connected in parallel in a circuit can be started at different time points after different delay time under the control of the same control switch, which remarkably reduces current impact on a power grid and reduces a voltage drop condition.

公开(公告)号：US09462666B2

公开(公告)日：2016-10-04

申请号：US14828815

申请日：2015-08-18

申请人： Environmental Potentials

发明人： Andrew C Pickett ,  Naveen R Tera ,  Robert V Rawlings

IPC分类号： H05B37/00 ,  H05B39/00 ,  H05B41/14 ,  H05B41/282 ,  H05B41/38

CPC分类号： H05B41/36 ,  H01J65/048 ,  H05B41/2806 ,  H05B41/282 ,  H05B41/38 ,  Y02B20/22

摘要： A ballast circuit for a lighting system using an induction fluorescent lamp utilizes an AC-DC rectification circuit, a DC-DC boost power conversion circuit, a DC-AC half bridge inverter circuit, and a resonating circuit to ignite the lamp and maintain substantially constant power output of the lamp, while the DC-AC half bridge inverter circuit is further comprised of a gate isolation transformer connected in a half bridge inverter schematic which uses a ballast integrated circuit (IC) to drive a high side MOSFET and a low side MOSFET and the gate isolation transformer electrically isolates a gate signal to the high side MOSFET.

摘要翻译： 用于使用感应荧光灯的照明系统的镇流器电路利用AC-DC整流电路，DC-DC升压电力转换电路，DC-AC半桥逆变器电路和谐振电路来点燃灯并保持基本恒定 而DC-AC半桥逆变器电路还包括连接在半桥逆变器原理图中的栅极隔离变压器，其使用镇流器集成电路（IC）驱动高边MOSFET和低端MOSFET 并且栅极隔离变压器将栅极信号电隔离到高侧MOSFET。

公开(公告)号：US09101023B2

公开(公告)日：2015-08-04

申请号：US14071921

申请日：2013-11-05

申请人： NLT Technologies, Ltd.

发明人： Shinji Ota

IPC分类号： H05B37/02 ,  H05B39/04 ,  H05B41/36 ,  H05B41/282 ,  H05B33/08

CPC分类号： H05B33/0842 ,  H05B33/0818 ,  H05B41/282 ,  Y02B20/346

摘要： A light-emitting element driving circuit controls the luminance of light-emitting elements by using a PWM signal. A display device includes the driving circuit and multiple light-emitting elements. The driving circuit includes a control circuit that generates a control signal by using a divided signal based on an input PWM signal, and a light-emitting element driving unit that drive the light-emitting elements by using the control signal. The control signal includes a larger number of frequency components in comparison with frequency components of the input PWM signal.

摘要翻译： 发光元件驱动电路通过使用PWM信号来控制发光元件的亮度。 显示装置包括驱动电路和多个发光元件。 驱动电路包括通过使用基于输入PWM信号的分频信号产生控制信号的控制电路和通过使用控制信号来驱动发光元件的发光元件驱动单元。 与输入PWM信号的频率分量相比，控制信号包括更多数量的频率分量。

公开(公告)号：US08749144B2

公开(公告)日：2014-06-10

申请号：US12573073

申请日：2009-10-02

申请人： Song-Yi Han ,  Sung-Kyu Park ,  Yun-Gun Lee

发明人： Song-Yi Han ,  Sung-Kyu Park ,  Yun-Gun Lee

IPC分类号： H05B37/00

CPC分类号： H05B41/282 ,  H05B41/2853 ,  Y02B20/186

摘要： According to one or more embodiments, an inverter provides a light source with an input voltage. A protection circuit shuts down the inverter based on an overvoltage protection level that is detected based on the input voltage. A protection circuit control part shuts down the operation of the protection circuit during a predetermined interval. Abnormal operation of the protection circuit caused by a high voltage provided when the light source is turned on may be prevented. Therefore, a turn-on defect of the light source may be prevented.

摘要翻译： 根据一个或多个实施例，逆变器为光源提供输入电压。 保护电路根据输入电压检测到的过电压保护电平关闭变频器。 保护电路控制部分在预定间隔期间关闭保护电路的操作。 可以防止当光源接通时提供的高电压引起的保护电路的异常操作。 因此，可以防止光源的导通缺陷。

公开(公告)号：US08698792B2

公开(公告)日：2014-04-15

申请号：US12938888

申请日：2010-11-03

申请人： Jen-Tang Chang ,  Yu-Chieh Hung ,  Hung-Yi Lin

发明人： Jen-Tang Chang ,  Yu-Chieh Hung ,  Hung-Yi Lin

IPC分类号： G06F3/038

CPC分类号： H05B41/282 ,  G09G3/3406 ,  G09G5/003 ,  G09G2320/08 ,  G09G2330/021 ,  G09G2330/024 ,  G09G2370/12 ,  H04N21/4436

摘要： A low-power display control method and associated display controller is provided. The low-power display control method detects a sensing signal to generate a sensing result. A control signal is generated according to the sensing result to control a power conversion controller to operate in a low-power power saving mode. In response to a wake-up event, the control signal is deasserted and an associated auxiliary circuit is also turned off, and then the display controller is woken up to restore to a normal operating mode.

摘要翻译： 提供了一种低功率显示控制方法和相关的显示控制器。 低功率显示控制方法检测感测信号以产生感测结果。 根据感测结果产生控制信号，以控制电力转换控制器以低功率省电模式工作。 响应于唤醒事件，控制信号被断言，并且相关联的辅助电路也被关闭，然后唤醒显示控制器以恢复到正常操作模式。

公开(公告)号：US20130181625A1

公开(公告)日：2013-07-18

申请号：US13414765

申请日：2012-03-08

申请人： Ching-Tsai PAN ,  Po-Yen Chen ,  En-Lin Chen ,  Chih-Lung Lee ,  Yu-Chuan Wang

发明人： Ching-Tsai PAN ,  Po-Yen Chen ,  En-Lin Chen ,  Chih-Lung Lee ,  Yu-Chuan Wang

IPC分类号： H05B37/02

CPC分类号： H05B41/282 ,  H02M1/4225 ,  H02M1/4241 ,  Y02B70/126

摘要： A single stage electronic ballast with power factor correction is provided. The single stage electronic ballast can work under the present intensity discharge lamp without any change and provide higher efficient, lower power consumption of lighting system, and better lighting quality of lamps. The single stage electronic ballast can also provide a stable current to load (lamp) for a long time. The single stage electronic ballast includes a first switch and a second switch that are controlled with complementary switching so as to provide an output voltage in response to the input power source and the variation of the load.

摘要翻译： 提供功率因数校正的单级电子镇流器。 单级电子镇流器可以在当前强度放电灯下工作，无任何变化，提供更高效，更低功耗的照明系统，更好的灯具照明质量。 单级电子镇流器还可以长时间提供稳定的负载电流（灯）。 单级电子镇流器包括第一开关和第二开关，其通过互补开关进行控制，以响应于输入电源和负载的变化而提供输出电压。

公开(公告)号：US20130147357A1

公开(公告)日：2013-06-13

申请号：US13762222

申请日：2013-02-07

申请人： On-Bright Electronics (Shanghai) Co., Ltd.

发明人： Miao Li ,  Liqiang Zhu ,  Lieyi Fang

IPC分类号： H05B41/39

CPC分类号： H05B41/39 ,  H05B41/282 ,  H05B41/3927 ,  Y02B20/183

摘要： System and method for adjusting brightness of one or more cold-cathode fluorescent lamps. The system includes a voltage selector configured to receive a dimming voltage and a first threshold voltage and generate an output voltage. The output voltage is selected from a group consisting of the dimming voltage and the first threshold voltage. Additionally, the system includes an oscillator coupled to a first capacitor and configured to generate a ramp signal with the first capacitor, and a signal generator configured to receive the ramp signal and the output voltage and generate a first signal. The first signal corresponds to a lamp brightness level. Moreover, the system includes a brightness detector configured to receive the first signal and output a second signal. The second signal indicates whether the lamp brightness level is higher than a threshold brightness level.

摘要翻译： 用于调节一个或多个冷阴极荧光灯的亮度的系统和方法。 该系统包括被配置为接收调光电压和第一阈值电压并产生输出电压的电压选择器。 输出电压从由调光电压和第一阈值电压组成的组中选择。 另外，该系统包括耦合到第一电容器并被配置为产生与第一电容器的斜坡信号的振荡器，以及被配置为接收斜坡信号和输出电压并产生第一信号的信号发生器。 第一个信号对应于灯的亮度级别。 此外，该系统包括配置成接收第一信号并输出​​第二信号的亮度检测器。 第二信号指示灯亮度是否高于阈值亮度级。

公开(公告)号：US20130082608A1

公开(公告)日：2013-04-04

申请号：US13248739

申请日：2011-09-29

申请人： Jaiganesh Balasubramanian

发明人： Jaiganesh Balasubramanian

IPC分类号： H05B37/02 ,  H05B35/00

CPC分类号： H05B41/282

摘要： A dimming ballast allowing individual control of multiple lamps is described. The ballast includes a lamp driver to control at least one lamp. Further, the ballast includes a current sensing module , connected as part of a feedback loop from the at least one lamp to the lamp driver, the current sensing module being configured with a maximum allowable output current value for each lamp. A lamp resonant circuit, connected between the lamp driver and the at least one lamp, operates over the entire range of the output current values. A lamp status module is coupled to the lamp driver for monitoring at least one condition related to the at least one lamp being controlled. Moreover, a control module controls the lamp driver independently based on a feedback loop from the lamp status module. Various embodiments of the dimming ballast along with related methods are also described.

摘要翻译： 描述允许单独控制多个灯的调光镇流器。 镇流器包括用于控制至少一个灯的灯驱动器。 此外，镇流器包括电流感测模块，其作为从至少一个灯到灯驱动器的反馈回路的一部分连接，电流感测模块配置有每个灯的最大允许输出电流值。 连接在灯驱动器和至少一个灯之间的灯谐振电路在输出电流值的整个范围上工作。 灯状态模块耦合到灯驱动器，用于监视与被控制的至少一个灯相关的至少一个状态。 此外，控制模块基于来自灯状态模块的反馈回路独立地控制灯驱动器。 还描述了调光镇流器的各种实施例以及相关方法。

公开(公告)号：US20120086358A1

公开(公告)日：2012-04-12

申请号：US12965903

申请日：2010-12-12

申请人： CHUANG-WEI TSENG

发明人： CHUANG-WEI TSENG

IPC分类号： H05B37/02

CPC分类号： H05B41/282

摘要： A current control circuit for light emitting diodes includes a power source, a current converting unit, a switch control unit and a number of transformers. The current control circuit provides direct current. The current converting unit is electrically connected to the power source and includes two couples of field effect transistors. The switch control unit is electrically connected to the current converting unit and is capable of providing a number of pulse signals to control the current converting unit. The two couples of field effect transistors receive pulse signals from the switch control unit and are alternately switched on and off. The direct current from the power source is converted into corresponding alternating current for the transformers. The current control circuit can provide stable and consistent current, enabling light sources to keep uniform brightness.

摘要翻译： 用于发光二极管的电流控制电路包括电源，电流转换单元，开关控制单元和多个变压器。 电流控制电路提供直流电流。 电流转换单元电连接到电源并且包括两对场效应晶体管。 开关控制单元电连接到电流转换单元，并且能够提供多个脉冲信号来控制电流转换单元。 两对场效应晶体管接收来自开关控制单元的脉冲信号，并交替地接通和断开。 来自电源的直流电转换成变压器的相应的交流电流。 电流控制电路可以提供稳定和一致的电流，使光源能够保持均匀的亮度。