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    • 2. 发明授权
    • Multifunction magnetic device with multiple cores and coils
    • 多功能磁性元件,多芯和线圈
    • US09295145B1
    • 2016-03-22
    • US14539804
    • 2014-11-12
    • Universal Lighting Technologies, Inc.
    • Donald FolkerJohn J. DernovsekStephen D. Mays, IIThomas M. PoehlmanWei Xiong
    • H01F27/38H01F38/10H05B41/38H01F27/24H05B41/24
    • H05B41/2824H01F27/326H01F27/38
    • A magnetic device includes first and second magnetic cores defining first, second, and middle legs extending between first and second back walls, an air gap defined in the middle leg. First, second, and middle legs, and first and second back walls have a substantially equal width. A first winding is located on the first leg, a second winding located on the second leg, and a third winding located on the middle leg. The magnetic device can be part of an electronic ballast circuit including an AC power source, a positive AC rail, a negative AC rail, a resonant capacitor coupled between the positive and negative AC rails, multiple positive and negative lamp terminals configured to couple to respective gas discharge lamps, and windings on a magnetic device coupled between the positive AC rail and respective positive lamp terminals. The third winding is coupled between AC power source and positive AC rail to define a resonant inductor.
    • 磁性装置包括限定在第一和第二后壁之间延伸的第一,第二和中间腿的第一和第二磁芯,限定在中间腿部中的气隙。 第一,第二和中间的腿,以及第一和第二后壁具有基本相等的宽度。 第一绕组位于第一腿上,位于第二腿上的第二绕组和位于中间腿上的第三绕组。 该磁性装置可以是电子镇流器电路的一部分,该电子镇流器电路包括AC电源,正交流电源线,负AC电源线,耦合在正和负AC电源轨道之间的谐振电容器,多个正极和负极灯端子,被配置为耦合到相应的 气体放电灯和耦合在正交流电源线和各个正极端子之间的磁性装置上的绕组。 第三绕组耦合在交流电源和正交流电源线之间,以定义谐振电感。
    • 3. 发明申请
    • ELECTRONIC BALLAST CIRCUIT FOR LAMPS
    • 电子镇流器电路
    • US20140252978A1
    • 2014-09-11
    • US14246698
    • 2014-04-07
    • GENESYS SYSTEMS, LLC
    • Steve McNay
    • H05B41/282
    • H05B37/02H05B41/2822H05B41/2824H05B41/382
    • An electronic ballast circuit includes a power factor correction circuit, a control and amplifier circuit, a ballast controller circuit and a ballast driver circuit. The ballast driver circuit includes a resonant circuit that connects to a lamp and a strike voltage limiter circuit that regulates the behavior of the resonant circuit. An overcurrent sensor circuit may be included to indirectly the control the ballast controller circuit via the control and amplifier circuit. The strike voltage limiter circuit uses varistors to change the resonant frequency of the resonant circuit to limit the voltage to the lamp.
    • 电子镇流器电路包括功率因数校正电路,控制和放大器电路,镇流器控制器电路和镇流器驱动器电路。 镇流器驱动器电路包括连接到灯的谐振电路和调节谐振电路的行为的击穿限压器电路。 可以包括过电流传感器电路以间接地经由控制和放大器电路来控制镇流器控制器电路。 冲击电压限制器电路使用压敏电阻来改变谐振电路的谐振频率以限制灯的电压。
    • 4. 发明授权
    • Electronic ballast with high power factor
    • 电子镇流器具有高功率因数
    • US08779674B2
    • 2014-07-15
    • US13391491
    • 2010-08-20
    • John LamPraveen Jain
    • John LamPraveen Jain
    • H05B37/00H05B39/00H05B41/14
    • H05B41/2824Y02B20/186
    • This invention provides an integrated power supply for a controller of an electronic ballast for a fluorescent lamp. The integrated power supply couples output power from the electronic ballast and uses the coupled power to provide power to the controller. In one embodiment, the electronic ballast may include a rectifier for converting an alternating current input voltage into a direct current output voltage, and a circuit including a combined power factor correction (PFC) stage and an inverter, wherein the PFC stage and the inverter share a switch. Also provided is a controller for an electronic ballast. The controller may include a voltage mode or current mode duty ratio controller that controls a duty ratio of a switch of the ballast. The controller and the ballast allow dimming of the fluorescent lamp while maintaining a high power factor.
    • 本发明提供一种用于荧光灯的电子镇流器的控制器的集成电源。 集成电源耦合来自电子镇流器的输出功率,并使用耦合功率向控制器供电。 在一个实施例中,电子镇流器可以包括用于将交流输入电压转换成直流输出电压的整流器,以及包括组合功率因数校正(PFC)级和反相器的电路,其中PFC级和逆变器共享 一个开关 还提供了一种用于电子镇流器的控制器。 控制器可以包括控制镇流器开关的占空比的电压模式或电流模式占空比控制器。 控制器和镇流器允许荧光灯调光,同时保持高功率因数。
    • 5. 发明授权
    • Fluorescent lamp power supply
    • 荧光灯电源
    • US08536803B2
    • 2013-09-17
    • US12837460
    • 2010-07-15
    • Laurence P. SadwickWilliam B. Sackett
    • Laurence P. SadwickWilliam B. Sackett
    • H05B37/02H02M1/12
    • H05B37/02H05B41/2824H05B41/3927
    • Various embodiments of a fluorescent lamp power supply are disclosed herein. In one embodiment, a power supply includes a power input connected to a pulse generator. The power supply also includes a filter connected to a variable pulse width output on the pulse generator and to the power input. The filter is adapted to substantially block at least one harmonic frequency component of the variable pulse width output and to substantially pass a fundamental frequency component of the variable pulse width output. The power supply also includes a power output connected to the filter, wherein an amplitude at the power output is related to the pulse width at the variable pulse width output.
    • 本文公开了荧光灯电源的各种实施例。 在一个实施例中,电源包括连接到脉冲发生器的电源输入。 电源还包括连接到脉冲发生器上的可变脉冲宽度输出端和电源输入端的滤波器。 滤波器适于基本上阻挡可变脉冲宽度输出的至少一个谐波频率分量并且基本上传递可变脉冲宽度输出的基频分量。 电源还包括连接到滤波器的功率输出,其中功率输出处的振幅与可变脉冲宽度输出处的脉冲宽度相关。
    • 9. 发明授权
    • Backlight lamp lighting control device and display device including same
    • 背光灯照明控制装置及包括其的显示装置
    • US08305335B2
    • 2012-11-06
    • US12451224
    • 2008-02-14
    • Mitsuru Hosoki
    • Mitsuru Hosoki
    • G09G3/36
    • H05B41/3927G09G3/3406H05B41/2824Y02B20/186
    • One embodiment of the present invention discloses: a backlight lamp lighting control device including: a PWM signal generating section for generating a PWM signal in accordance with a duty ratio externally inputted, and outputting the PWM signal to a PWM inverter section controlled by the PWM signal so as to drive a fluorescent lamp to light; and a tube current detecting section for detecting a current flowing in the fluorescent lamp, the PWM signal generating section generating the PWM signal based on a current, which is obtained by adjusting the current detected by the tube current detecting section in accordance with the duty ratio externally inputted, so that luminance displayed on a liquid crystal display panel will be substantially uniform over the entire liquid crystal display panel.
    • 本发明的一个实施例公开了一种背光灯点亮控制装置,包括:PWM信号产生部分,用于根据外部输入的占空比产生PWM信号,并将PWM信号输出到由PWM信号控制的PWM逆变器部分 以驱动荧光灯点亮; 以及管电流检测部分,用于检测在荧光灯中流动的电流,PWM信号产生部分基于电流产生PWM信号,该电流是通过根据占空比调节由电流检测部分检测的电流而获得的 从而使液晶显示面板上显示的亮度在整个液晶显示面板上基本均匀。
    • 10. 发明申请
    • HIGH-PRECISION OSCILLATOR SYSTEMS WITH FEED FORWARD COMPENSATION FOR CCFL DRIVER SYSTEMS AND METHODS THEREOF
    • 具有CCFL驱动器系统的进给前向补偿的高精度振荡器系统及其方法
    • US20110279153A1
    • 2011-11-17
    • US12823378
    • 2010-06-25
    • Liqiang ZhuMiao LiLieyi Fang
    • Liqiang ZhuMiao LiLieyi Fang
    • H03K4/48
    • H03K4/06H02M7/53803H02M2001/0022H05B41/282H05B41/2824H05B41/2828Y02B20/183
    • System and method for generating one or more ramp signals. The method includes an oscillator configured to generate at least a clock signal, and a ramp signal generator configured to receive at least the clock signal and generate a first ramp signal. Additionally, the ramp signal generator is coupled to a first resistor including a first terminal and a second terminal. The first resistor is configured to receive an input voltage at the first terminal and is coupled to the ramp signal generator at the second terminal. Moreover, the first resistor is associated with a first resistance value. Also, the clock signal is associated with at least a predetermined frequency. The predetermined frequency does not change if the input voltage changes from a first magnitude to a second magnitude. The first magnitude is different from the second magnitude.
    • 用于产生一个或多个斜坡信号的系统和方法。 该方法包括被配置为产生至少一个时钟信号的振荡器和被配置为至少接收时钟信号并产生第一斜坡信号的斜坡信号发生器。 另外,斜坡信号发生器耦合到包括第一端子和第二端子的第一电阻器。 第一电阻器被配置为在第一端子处接收输入电压并且在第二端子耦合到斜坡信号发生器。 此外,第一电阻器与第一电阻值相关联。 此外,时钟信号至少与预定频率相关联。 如果输入电压从第一幅度变化到第二幅度,则预定频率不改变。 第一幅度与第二幅度不同。