公开(公告)号：US09837913B1

公开(公告)日：2017-12-05

申请号：US15425195

申请日：2017-02-06

申请人： Universal Lighting Technologies, Inc.

发明人： Wei Xiong

IPC分类号： H05B37/02 ,  H02M3/335 ,  H02M3/08 ,  H02M1/42 ,  H05B33/08 ,  H02M1/00

CPC分类号： H05B33/0845 ,  H02M3/3376 ,  H02M2001/0009 ,  H02M2001/0058 ,  H05B33/0851 ,  H05B33/0887 ,  H05B41/2856

摘要： A resonant power converter is provided with capacitive switching mode protection. The converter produces output current and voltage according to an operating frequency, which is desirably maintained above a resonant frequency for the power converter. A controller regulates the operating frequency based on an output current relative to a reference value, which may be provided via a dimming interface. A capacitive switching mode is determinable, based on a positive relationship in a detected direction of change in an output value relative to a detected direction of change in the operating frequency. When the capacitive switching mode is determined, a preceding operating frequency is enacted and the controller disables regulation of the operating frequency therefrom. Inductive mode switching is determinable with a negative relationship between detected direction of change in the output value relative to direction of change in the operating frequency, wherein regulation of operating frequency is renewed.

公开(公告)号：US08779693B1

公开(公告)日：2014-07-15

申请号：US13101842

申请日：2011-05-05

申请人： Robert Allan Blalock ,  George Michael Drake

发明人： Robert Allan Blalock ,  George Michael Drake

IPC分类号： H05B37/02 ,  H05B41/285

CPC分类号： F21V25/10 ,  H05B33/0854 ,  H05B33/089 ,  H05B41/2856 ,  Y02B20/341

摘要： A system for providing thermal protection for an LED light module and methods for manufacturing the same are described herein. The thermally protected LED light module may include a heat sink assembly thermally coupled to an LED light source, and a thermal protector. The thermal protector may be connected to the heat sink assembly by a mechanical fastener. Further, the thermal protector is electrically coupled to the LED light source and a power source where the thermal protector breaks the power provided to the LED light source from the power source when the thermal protector detects heat at or above a threshold temperature.

摘要翻译： 本文描述了一种用于为LED灯模块提供热保护的系统及其制造方法。 热保护LED灯模块可以包括热耦合到LED光源的散热器组件和热保护器。 热保护器可以通过机械紧固件连接到散热器组件。 此外，热保护器电耦合到LED光源和电源，其中当热保护器检测到高于或高于阈值温度的热时，热保护器从电源断开提供给LED光源的功率。

公开(公告)号：US08093832B2

公开(公告)日：2012-01-10

申请号：US12234074

申请日：2008-09-19

申请人： Hyeon-Yong Jang

发明人： Hyeon-Yong Jang

IPC分类号： G05F1/00 ,  H05B37/02 ,  H05B39/04 ,  H05B41/36 ,  H05B39/02 ,  H05B41/16 ,  H05B41/24 ,  H05B37/00 ,  H05B39/00 ,  H05B41/00 ,  G09G3/36

CPC分类号： H05B41/2856 ,  H05B41/3921

摘要： In a backlight unit and an LCD apparatus having the backlight unit, in which the backlight unit includes a plurality of lamps and an inverter, the inverter provides the lamps with current. The inverter reduces current provided to the lamps to turn off the lamps. Therefore, currents are gradually decreased to reduce noise generated by the transformer when the lamps are turned off.

摘要翻译： 在具有背光单元的背光单元和LCD装置中，背光单元包括多个灯和逆变器，逆变器为灯提供电流。 逆变器减少提供给灯的电流以关闭灯。 因此，当灯关闭时，电流逐渐减小以减小变压器产生的噪声。

公开(公告)号：US07986105B2

公开(公告)日：2011-07-26

申请号：US12140835

申请日：2008-06-17

申请人： Sang-hoon Kang

发明人： Sang-hoon Kang

IPC分类号： H05B41/36

CPC分类号： H05B41/40 ,  H05B41/2856 ,  Y02B20/186

摘要： A display and a method for driving a backlight thereof are provided. The display generates a control voltage and supplies the generated control voltage to a backlight driving unit in a step-wise manner. Accordingly, malfunctions of the backlight due to incomplete activation during initial driving, can be avoided.

摘要翻译： 提供了用于驱动其背光的显示器和方法。 显示器产生控制电压，并且以逐步的方式将生成的控制电压提供给背光驱动单元。 因此，可以避免在初始驱动期间由于不完全的激活导致的背光源的故障。

公开(公告)号：US07843149B2

公开(公告)日：2010-11-30

申请号：US12100472

申请日：2008-04-10

申请人： Li-Chun Lai

发明人： Li-Chun Lai

IPC分类号： H05B37/00

CPC分类号： H05B41/3927 ,  H05B41/2856 ,  Y02B20/186 ,  Y02B20/19 ,  Y10S315/04

摘要： A light dimming device for compact fluorescent lamp includes a rectifying circuit for rectifying an AC current signal into a zero crossing voltage signal and outputting it to a current limiting circuit; the current limiting circuit for limiting the zero crossing voltage signal and sending the current limited zero crossing voltage signal to a voltage regulating and filtering circuit and a first comparator; the voltage regulating and filtering circuit for regulating the current limited signal and sending the regulated current limited signal to a reference voltage generating circuit and a current controller; a reference voltage generating circuit for generating a reference voltage signal upon receiving the regulated current limited signal and sending the reference voltage signal respectively to the first comparator and a second comparator; a current controller for controlling the amount of a charging current of a capacitor; the first comparator for outputting a low voltage level signal to the capacitor after receiving the zero crossing voltage signal and the reference voltage signal to discharge the capacitor; the second comparator for outputting a drive signal to the drive circuit after receiving the discharging signal to turn on a power switch; the filter circuit for converting the discharging signal of the capacitor into a steady DC current signal and transferring the DC current signal to the compact fluorescent lamp so as to let the compact fluorescent lamp generate light of different luminance according to the amount of the DC current signal.

摘要翻译： 一种用于紧凑型荧光灯的调光装置，包括：整流电路，用于将AC电流信号整流为过零电压信号，并将其输出到限流电路; 用于限制过零电压信号的电流限制电路，并将电流限制过零电压信号发送到电压调节和滤波电路以及第一比较器; 电压调节滤波电路，用于调节电流限制信号，并将调节电流限制信号发送到参考电压发生电路和电流控制器; 参考电压产生电路，用于在接收到调节电流限制信号时产生参考电压信号，并将参考电压信号分别发送到第一比较器和第二比较器; 用于控制电容器的充电电流量的电流控制器; 第一比较器，用于在接收到过零电压信号和参考电压信号之后向电容器输出低电压电平信号以对电容器放电; 所述第二比较器用于在接收到所述放电信号以接通电源开关之后向所述驱动电路输出驱动信号; 滤波电路，用于将电容器的放电信号转换为稳定的直流电流信号，并将直流电流信号传送到紧凑型荧光灯，以使紧凑型荧光灯根据直流电流信号的量产生不同亮度的光 。

公开(公告)号：US07777423B2

公开(公告)日：2010-08-17

申请号：US11919010

申请日：2006-03-22

申请人： Klaus Fischer ,  Josef Kreittmayr

发明人： Klaus Fischer ,  Josef Kreittmayr

IPC分类号： H05B37/02

CPC分类号： H05B41/3924 ,  H05B41/28 ,  H05B41/2856 ,  Y10S315/04

摘要： An electronic ballast presenting an input capacitor (C) and including a step-up converter (LH, DH, SH, CH) for operating a load, for example a discharge lamp (CFL), on a phase control dimmer (DIM) having an integrated or parasite inductance (L). According to the invention, excessive voltage after connection with a phase control can be reduced by adjusting currents via of the step-up converter (LH, DH, SH, CH).

摘要翻译： 具有输入电容器（C）的电子镇流器并且包括用于在相位控制调光器（DIM）上操作负载（例如放电灯（CFL））的升压转换器（LH，DH，SH，CH），所述相位控制调光器 集成或寄生电感（L）。 根据本发明，通过调节升压转换器（LH，DH，SH，CH）的电流可以减小与相位控制连接之后的过大电压。

公开(公告)号：US07675250B2

公开(公告)日：2010-03-09

申请号：US11489145

申请日：2006-07-18

申请人： Venkatesh Chitta ,  Mark S. Taipale ,  Jonathan Quayle ,  Thomas Richard Hinds

发明人： Venkatesh Chitta ,  Mark S. Taipale ,  Jonathan Quayle ,  Thomas Richard Hinds

IPC分类号： G05F1/00

CPC分类号： H05B41/2856 ,  H05B41/2986

摘要： The output current of a ballast is dynamically limited when an over-temperature condition is detected in the ballast according to one of (i) a step function or (ii) a combination of step and continuous functions, so as to reduce the temperature of the ballast while continuing to operate it.

摘要翻译： 当在镇流器中检测到过温条件时，镇流器的输出电流根据（i）阶跃函数或（ii）阶跃函数和连续函数的组合之一被检测，以便降低温度 镇流器，同时继续操作它。

公开(公告)号：US20090256486A1

公开(公告)日：2009-10-15

申请号：US12100472

申请日：2008-04-10

申请人： Li-Chun LAI

发明人： Li-Chun LAI

IPC分类号： H05B41/14

CPC分类号： H05B41/3927 ,  H05B41/2856 ,  Y02B20/186 ,  Y02B20/19 ,  Y10S315/04

摘要： A light dimming device for compact fluorescent lamp includes a rectifying circuit for rectifying an AC current signal into a zero crossing voltage signal and outputting it to a current limiting circuit; the current limiting circuit for limiting the zero crossing voltage signal and sending the current limited zero crossing voltage signal to a voltage regulating and filtering circuit and a first comparator; the voltage regulating and filtering circuit for regulating the current limited signal and sending the regulated current limited signal to a reference voltage generating circuit and a current controller; a reference voltage generating circuit for generating a reference voltage signal upon receiving the regulated current limited signal and sending the reference voltage signal respectively to the first comparator and a second comparator; a current controller for controlling the amount of a charging current of a capacitor; the first comparator for outputting a low voltage level signal to the capacitor after receiving the zero crossing voltage signal and the reference voltage signal to discharge the capacitor; the second comparator for outputting a drive signal to the drive circuit after receiving the discharging signal to turn on a power switch; the filter circuit for converting the discharging signal of the capacitor into a steady DC current signal and transferring the DC current signal to the compact fluorescent lamp so as to let the compact fluorescent lamp generate light of different luminance according to the amount of the DC current signal.

摘要翻译： 一种用于紧凑型荧光灯的调光装置，包括：整流电路，用于将AC电流信号整流为过零电压信号，并将其输出到限流电路; 用于限制过零电压信号的电流限制电路，并将电流限制过零电压信号发送到电压调节和滤波电路以及第一比较器; 电压调节滤波电路，用于调节电流限制信号，并将调节电流限制信号发送到参考电压发生电路和电流控制器; 参考电压产生电路，用于在接收到调节电流限制信号时产生参考电压信号，并将参考电压信号分别发送到第一比较器和第二比较器; 用于控制电容器的充电电流量的电流控制器; 第一比较器，用于在接收到过零电压信号和参考电压信号之后向电容器输出低电压电平信号以对电容器放电; 所述第二比较器用于在接收到所述放电信号以接通电源开关之后向所述驱动电路输出驱动信号; 滤波电路，用于将电容器的放电信号转换为稳定的直流电流信号，并将直流电流信号传送到紧凑型荧光灯，以使紧凑型荧光灯根据直流电流信号的量产生不同亮度的光 。

公开(公告)号：US20090128058A1

公开(公告)日：2009-05-21

申请号：US12269861

申请日：2008-11-12

申请人： Zahir Mohammad Ahmed ,  Chen Hongcheng

发明人： Zahir Mohammad Ahmed ,  Chen Hongcheng

IPC分类号： H02H9/04 ,  H05B41/36

CPC分类号： H05B41/2856 ,  H02H3/023

摘要： A current shut-off overload protection circuit useful for fluorescent lamp ballast protection and the like has at least one power transistor for supplying a load current to a circuit load, a protection circuit comprising a current sensing resistance connected for developing a voltage drop related to the circuit load, and a switching diode having a control input operative for turning off the power transistor by removing a bias level, as by grounding the transistor base, responsive to a preset level of the voltage drop such that the load current to the load is switched off upon the load current exceeding a maximum acceptable load current represented by a preset level of the voltage drop.

摘要翻译： 用于荧光灯镇流器保护等的电流关断过载保护电路具有至少一个用于向电路负载提供负载电流的功率晶体管，保护电路包括连接的电流感测电阻，用于形成与 电路负载和具有控制输入的开关二极管，其操作用于通过去除偏置电平来关断功率晶体管，如通过接地晶体管基极，响应于预设电平的电压降，使得到负载的负载电流被切换 在负载电流超过由电压降的预设电平表示的最大可接受负载电流时关闭。

公开(公告)号：US07531970B2

公开(公告)日：2009-05-12

申请号：US11385536

申请日：2006-03-20

申请人： Chung-Che Yu ,  Chien-Pang Hung ,  Chih-Shun Lee ,  Chin-Fa Kao

发明人： Chung-Che Yu ,  Chien-Pang Hung ,  Chih-Shun Lee ,  Chin-Fa Kao

IPC分类号： G05F1/00

CPC分类号： H05B41/2828 ,  H05B41/2824 ,  H05B41/2855 ,  H05B41/2856 ,  Y02B20/186 ,  Y10S315/07

摘要： A controller for a driving circuit of power source comprises a frequency generator, a pulse width modulator, and a driving device. The frequency generator comprises a latch circuit. The frequency generator provides a pulse signal at a first frequency after the controller is started. After the frequency generator receives an indicating signal, the frequency generator changes the frequency of pulse signal from the first frequency to a second frequency and locks the frequency of pulse signal at the second frequency. The pulse width modulator provides a PWM signal according to the pulse signal and a feedback signal which indicates a status of electric power supply of the driving circuit. The driving device controls semiconductor switches according to the PWM signal.

摘要翻译： 用于电源驱动电路的控制器包括频率发生器，脉宽调制器和驱动装置。 频率发生器包括一个锁存电路。 频率发生器在控制器启动后以第一个频率提供脉冲信号。 在频率发生器接收到指示信号之后，频率发生器将脉冲信号的频率从第一频率改变到第二频率，并将脉冲信号的频率锁定在第二频率。 脉冲宽度调制器根据脉冲信号提供PWM信号，并提供指示驱动电路的电力供应状态的反馈信号。 驱动装置根据PWM信号控制半导体开关。