公开(公告)号：US20120176066A1

公开(公告)日：2012-07-12

申请号：US13400121

申请日：2012-02-20

Applicant: Yung Lin LIN ,  Sheng-Tai LEE

Inventor： Yung Lin LIN ,  Sheng-Tai LEE

IPC: H05B37/02

CPC classification number: H05B33/0815 ,  H05B33/0824

Abstract: A portable lighting device includes a controller, a power source that provides a voltage, and a load that includes a light emitting diode (LED) light source. The controller receives the voltage and regulates a current of the LED light source based on a sensing signal indicating the voltage of the power source. The controller regulates the current of the LED light source to a first current level if the voltage of the power source is greater than a first voltage level, and to a second current level if the voltage of the power source is less than a second voltage level. The second voltage level is less than the first voltage level. The controller regulates the current of the LED light source to vary according to the sensing signal if the voltage of the power source is between the first voltage level and the second voltage level.

Abstract translation: 便携式照明装置包括控制器，提供电压的电源以及包括发光二极管（LED）光源的负载。 控制器基于指示电源电压的感测信号接收电压并调节LED光源的电流。 如果电源的电压大于第一电压电平，则控制器将LED光源的电流调节到第一电流电平，并且如果电源的电压小于第二电压电平，则控制器将电流调节到第一电流水平 。 第二电压电平小于第一电压电平。 如果电源的电压处于第一电压电平和第二电压电平之间，则控制器调节LED光源的电流根据感测信号而变化。

公开(公告)号：US08143800B2

公开(公告)日：2012-03-27

申请号：US12817388

申请日：2010-06-17

Applicant: Da Liu ,  Ching-Chuan Kuo ,  Sheng-Tai Lee

Inventor： Da Liu ,  Ching-Chuan Kuo ,  Sheng-Tai Lee

IPC: H05B37/02

CPC classification number: H02M1/4258 ,  H05B33/0815 ,  Y02B70/126

Abstract: A circuit for driving a load includes a power line, converter circuitry, and a controller. The power line is operable for providing an input current and an input voltage. The converter circuitry coupled to the power line is operable for converting the input voltage to a regulated voltage to drive the load, and for providing a current detection signal indicating whether a converter current flowing through the converter circuitry drops to a predetermined level. The controller coupled to the converter circuitry is operable for correcting a power factor of the circuit based on the current detection signal and the input voltage such that a waveform of the input current follows a waveform of the input voltage.

Abstract translation: 用于驱动负载的电路包括电力线，转换器电路和控制器。 电力线可操作用于提供输入电流和输入电压。 耦合到电力线的转换器电路可操作用于将输入电压转换为调节电压以驱动负载，并且用于提供指示流过转换器电路的转换器电流是否下降到预定电平的电流检测信号。 耦合到转换器电路的控制器可操作用于基于电流检测信号和输入电压校正电路的功率因数，使得输入电流的波形遵循输入电压的波形。

公开(公告)号：US20080067944A1

公开(公告)日：2008-03-20

申请号：US11600615

申请日：2006-11-15

Applicant: Xiaojun Wang ,  Sheng-Tai Lee ,  Youling Li ,  Da Liu ,  Ru Guo

Inventor： Xiaojun Wang ,  Sheng-Tai Lee ,  Youling Li ,  Da Liu ,  Ru Guo

IPC: H05B37/02 ,  H02H9/00

CPC classification number: H05B41/2822

Abstract: A circuit structure for LCD backlight is disclosed in the present invention. The circuit structure includes an inverter topology, a current balance circuit, and a plurality of loads. The current balance circuit is coupled to the plurality of loads and capable of balancing current of N loads by using N/2-1 balance chokes. The circuit structure may further include a protection circuit which is coupled to the low voltage sides of the plurality of loads. The protection circuit is capable of sensing lamp voltages and providing a feedback signal to a controller. Furthermore, the protection circuit is composed of count-reduced and cost-competitive electronic elements.

Abstract translation: 在本发明中公开了用于LCD背光的电路结构。 电路结构包括逆变器拓扑，电流平衡电路和多个负载。 目前的平衡电路耦合到多个负载，并能够通过使用N / 2-1平衡扼流圈平衡N个负载的电流。 电路结构还可以包括耦合到多个负载的低电压侧的保护电路。 保护电路能够感测灯电压并向控制器提供反馈信号。 此外，保护电路由数量减少和成本竞争的电子元件组成。

公开(公告)号：US08508142B2

公开(公告)日：2013-08-13

申请号：US13400121

申请日：2012-02-20

Applicant: Yung Lin Lin ,  Sheng-Tai Lee

Inventor： Yung Lin Lin ,  Sheng-Tai Lee

IPC: H05B37/02 ,  H05B39/02 ,  H05B39/04 ,  H05B41/36

CPC classification number: H05B33/0815 ,  H05B33/0824

Abstract: A portable lighting device includes a controller, a power source that provides a voltage, and a load that includes a light emitting diode (LED) light source. The controller receives the voltage and regulates a current of the LED light source based on a sensing signal indicating the voltage of the power source. The controller regulates the current of the LED light source to a first current level if the voltage of the power source is greater than a first voltage level, and to a second current level if the voltage of the power source is less than a second voltage level. The second voltage level is less than the first voltage level. The controller regulates the current of the LED light source to vary according to the sensing signal if the voltage of the power source is between the first voltage level and the second voltage level.

Abstract translation: 便携式照明装置包括控制器，提供电压的电源以及包括发光二极管（LED）光源的负载。 控制器基于指示电源电压的感测信号接收电压并调节LED光源的电流。 如果电源的电压大于第一电压电平，则控制器将LED光源的电流调节到第一电流电平，并且如果电源的电压小于第二电压电平，则控制器将电流调节到第一电流水平 。 第二电压电平小于第一电压电平。 如果电源的电压处于第一电压电平和第二电压电平之间，则控制器调节LED光源的电流根据感测信号而变化。

公开(公告)号：US07812546B2

公开(公告)日：2010-10-12

申请号：US12043562

申请日：2008-03-06

Applicant: Sheng Tai Lee

Inventor： Sheng Tai Lee

IPC: H05B41/24

CPC classification number: H05B41/2822 ,  Y10S315/07 ,  Y10T307/414

Abstract: A DC/AC converter circuit structure for driving a plurality of cold cathode fluorescent lamps is described. A common-mode choke is used between the cold cathode fluorescent lamps. The common-mode choke balances the currents respectively flowing through the cold cathode fluorescent lamps.

Abstract translation: 描述用于驱动多个冷阴极荧光灯的DC / AC转换器电路结构。 在冷阴极荧光灯之间使用共模扼流圈。 共模扼流器平衡流过冷阴极荧光灯的电流。

公开(公告)号：US06781325B2

公开(公告)日：2004-08-24

申请号：US10383277

申请日：2003-03-07

Applicant: Sheng Tai Lee

Inventor： Sheng Tai Lee

IPC: H05B4124

CPC classification number: H05B41/2822 ,  Y10S315/07 ,  Y10T307/414

Abstract: A DC/AC converter circuit structure for driving a plurality of cold cathode fluorescent lamps is described. A common-mode choke is used between the cold cathode fluorescent lamps. The common-mode choke balances the currents respectively flowing through the cold cathode fluorescent lamps.

公开(公告)号：US09030121B2

公开(公告)日：2015-05-12

申请号：US12953353

申请日：2010-11-23

Applicant: Yung Lin Lin ,  Ching Chuan Kuo ,  Sheng Tai Lee

Inventor： Yung Lin Lin ,  Ching Chuan Kuo ,  Sheng Tai Lee

IPC: H05B37/00 ,  H05B33/08 ,  H05B37/02

CPC classification number: H05B33/0824

Abstract: Embodiments in accordance with the present invention provide circuits and methods for driving light sources, e.g., a light-emitting diode (LED) light source. In one embodiment, a lamp includes a rectifier rectifying an AC voltage to a rectified AC voltage, an LED light source, and a switch coupled to the LED light source in series controlling a current through the LED light source according to a predetermined current reference. The LED light source and the switch coupled in series receive the rectified AC voltage while the switch is controlled linearly.

Abstract translation: 根据本发明的实施例提供了用于驱动光源的电路和方法，例如发光二极管（LED）光源。 在一个实施例中，灯包括整流AC电压到整流AC电压的整流器，LED光源和耦合到LED光源的开关，其根据预定的电流参考串联控制通过LED光源的电流。 LED光源和串联的开关串联接收整流的交流电压，同时开关线性控制。

公开(公告)号：US20120091816A1

公开(公告)日：2012-04-19

申请号：US13289364

申请日：2011-11-04

Applicant: Da LIU ,  Sheng-Tai LEE ,  Ju-Yuan HSIAO ,  Chang-Yi LIN

Inventor： Da LIU ,  Sheng-Tai LEE ,  Ju-Yuan HSIAO ,  Chang-Yi LIN

IPC: H02J7/00

CPC classification number: H02J7/022 ,  H02J7/0068 ,  H02M3/158 ,  H05B33/0809 ,  Y10T307/696

Abstract: In one embodiment, a power system includes a first power source having a first voltage, a second power source having a second voltage, and a controller. The controller is coupled to the first power source and the second power source. The controller compares the first voltage with the second voltage, controls the first power source to charge the second power source via a first switch and a second switch in a charging mode when the first voltage is greater than said second voltage, and controls the second power source to power a load such as a light-emitting diode (LED) light source via the second switch and a third switch in a load-powering mode when the second voltage is greater than the first voltage.

Abstract translation: 在一个实施例中，电力系统包括具有第一电压的第一电源，具有第二电压的第二电源和控制器。 控制器耦合到第一电源和第二电源。 控制器将第一电压与第二电压进行比较，当第一电压大于所述第二电压时，控制第一电源经由第一开关和第二开关以充电模式对第二电源充电，并且控制第二电源 源极，当第二电压大于第一电压时，经由第二开关和负载供电模式中的第三开关对诸如发光二极管（LED）光源的负载供电。

公开(公告)号：US08054001B2

公开(公告)日：2011-11-08

申请号：US11600615

申请日：2006-11-15

Applicant: Xiaojun Wang ,  Sheng-Tai Lee ,  Youling Li ,  Da Liu ,  Ru Guo

Inventor： Xiaojun Wang ,  Sheng-Tai Lee ,  Youling Li ,  Da Liu ,  Ru Guo

IPC: G05F1/00

CPC classification number: H05B41/2822

Abstract: A circuit structure for LCD backlight is disclosed in the present invention. The circuit structure includes an inverter topology, a current balance circuit, and a plurality of loads. The current balance circuit is coupled to the plurality of loads and capable of balancing current of N loads by using N/2−1 balance chokes. The circuit structure may further include a protection circuit which is coupled to the low voltage sides of the plurality of loads. The protection circuit is capable of sensing lamp voltages and providing a feedback signal to a controller. Furthermore, the protection circuit is composed of count-reduced and cost-competitive electronic elements.

Abstract translation: 在本发明中公开了用于LCD背光的电路结构。 电路结构包括逆变器拓扑，电流平衡电路和多个负载。 目前的平衡电路耦合到多个负载，并能够通过使用N / 2-1平衡扼流圈平衡N个负载的电流。 电路结构还可以包括耦合到多个负载的低电压侧的保护电路。 保护电路能够感测灯电压并向控制器提供反馈信号。 此外，保护电路由数量减少和成本竞争的电子元件组成。

公开(公告)号：US20100320934A1

公开(公告)日：2010-12-23

申请号：US12817388

申请日：2010-06-17

Applicant: Da Liu ,  Ching-Chuan Kuo ,  Sheng-Tai Lee

Inventor： Da Liu ,  Ching-Chuan Kuo ,  Sheng-Tai Lee

IPC: H05B41/36 ,  G05F5/00

CPC classification number: H02M1/4258 ,  H05B33/0815 ,  Y02B70/126

Abstract: A circuit for driving a load includes a power line, converter circuitry, and a controller. The power line is operable for providing an input current and an input voltage. The converter circuitry coupled to the power line is operable for converting the input voltage to a regulated voltage to drive the load, and for providing a current detection signal indicating whether a converter current flowing through the converter circuitry drops to a predetermined level. The controller coupled to the converter circuitry is operable for correcting a power factor of the circuit based on the current detection signal and the input voltage such that a waveform of the input current follows a waveform of the input voltage.

Abstract translation: 用于驱动负载的电路包括电力线，转换器电路和控制器。 电力线可操作用于提供输入电流和输入电压。 耦合到电力线的转换器电路可操作用于将输入电压转换为调节电压以驱动负载，并且用于提供指示流过转换器电路的转换器电流是否下降到预定电平的电流检测信号。 耦合到转换器电路的控制器可操作用于基于电流检测信号和输入电压校正电路的功率因数，使得输入电流的波形遵循输入电压的波形。