公开(公告)号：US06218788B1

公开(公告)日：2001-04-17

申请号：US09378193

申请日：1999-08-20

申请人： Timothy Chen ,  Louis R. Nerone

发明人： Timothy Chen ,  Louis R. Nerone

IPC分类号： H05B4114

CPC分类号： H05B41/3921

摘要： Ballast circuit 10 for lamp 52 has a switching network consisting of a complimentary pair of switches 30, 32 which are driven by a low-power universally available controller IC 26. The controller IC 26 is configured with a floating ground arrangement 36. A current sensor 72 assists in generating a negative feedback signal 79 which is provided to an inverting input of operational amplifier 86 of controller IC 26. Prior to being supplied, the negative feedback signal 79 is summed at summing node 80 with a level shifted signal 92, generated by a level shifting circuit 22 which received an input dimming signal 16. The level shifting circuit 22 shifts the dimming signal 16 from a ground reference system to a floating ground design. The level shifted signal 92 and feedback signal 79 are designed to cancel each other whereby the input to operational amplifier 86 is maintained constant as the non-inverting input has a constant internally supplied voltage.

摘要翻译： 用于灯52的镇流器电路10具有由互补的一对开关30,32组成的开关网络，开关30,32由低功率普遍可用的控制器IC 26驱动。控制器IC 26配置有浮动接地装置36.电流传感器 72协助产生负反馈信号79，该负反馈信号79被提供给控制器IC26的运算放大器86的反相输入。在被提供之前，负反馈信号79在求和节点80与电平移位信号92相加，电平移位信号92由 电平移位电路22接收输入调光信号16.电平移位电路22将调光信号16从地面参考系统移动到浮动地面设计。 电平移位信号92和反馈信号79被设计为彼此抵消，由此，当非反相输入具有恒定的内部供应电压时，运算放大器86的输入保持恒定。

公开(公告)号：US09531255B2

公开(公告)日：2016-12-27

申请号：US14594536

申请日：2015-01-12

申请人： Timothy Chen ,  Daniel Albert Haas

发明人： Timothy Chen ,  Daniel Albert Haas

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

CPC分类号： H02M1/42 ,  H02M1/4241 ,  H02M3/325 ,  H02M3/33546 ,  H02M2001/0058 ,  H05B33/0809 ,  H05B33/0815 ,  Y02B70/126 ,  Y02B70/1491

摘要： A driver circuit for powering a load is disclosed. The driver circuit includes an input for receiving for connection to a source of AC power, and a rectifier for converting the AC power from the input into DC power. The driver circuit also include a voltage bus filter, a high-frequency oscillator for generating a high-frequency AC signal, a resonant driver, a feedback circuit, and a high-frequency DC rectifier. The voltage bus filter smoothens the DC power from the rectifier, and includes at least one capacitor. The resonant driver is in electrical communication with the high-frequency oscillator, and limits a current of the high-frequency AC signal and produces a limited output voltage based on the high-frequency AC signal. The feedback circuit is in electrical communication with the resonant driver and the voltage bus filter, and maintains a charge on the capacitor of the voltage bus filter.

摘要翻译： 公开了一种为负载供电的驱动电路。 驱动器电路包括用于连接到AC电源的接收的输入端和用于将来自输入的AC电力转换为DC电力的整流器。 驱动电路还包括电压总线滤波器，用于产生高频AC信号的高频振荡器，谐振驱动器，反馈电路和高频DC整流器。 电压总线滤波器使来自整流器的直流电力平滑，并且包括至少一个电容器。 谐振驱动器与高频振荡器电连通，并限制高频交流信号的电流，并基于高频交流信号产生有限的输出电压。 反馈电路与谐振驱动器和电压总线滤波器电连通，并在电压总线滤波器的电容器上保持电荷。

公开(公告)号：US20160353555A1

公开(公告)日：2016-12-01

申请号：US14723553

申请日：2015-05-28

申请人： Timothy Chen ,  Andrew Hussey ,  Hao Wang

发明人： Timothy Chen ,  Andrew Hussey ,  Hao Wang

IPC分类号： H05B37/02 ,  H05B33/08

CPC分类号： H05B37/0272 ,  H05B33/0815 ,  H05B33/0845 ,  Y02B20/347

摘要： A driver circuit receiving wireless communication over a wireless network is disclosed. The driver circuit includes a lighting load, a main driver, and an auxiliary driver. The lighting load is selectively illuminated based on an output voltage being provided to the lighting load that is at least a forward voltage of the lighting load. The wireless communication is indicative of whether the lighting load is to be illuminated. The main driver is for controlling current and voltage within the driver circuit such that if the wireless communication indicates the lighting load is to be illuminated, then the current delivered to the lighting load is regulated by the main driver, and if the wireless communication indicates the lighting load is not to be illuminated, then the output voltage delivered to the lighting load is controlled by the main driver is below the forward voltage.

摘要翻译： 公开了一种通过无线网络接收无线通信的驱动器电路。 驱动器电路包括照明负载，主驱动器和辅助驱动器。 基于提供给至少照明负载的正向电压的照明负载的输出电压来选择性地照明照明负载。 无线通信指示照明负载是否被照亮。 主要驱动器用于控制驱动器电路内的电流和电压，使得如果无线通信指示照明负载被点亮，则传送到照明负载的电流由主驱动器调节，并且如果无线通信指示 照明负载不被点亮，则传输到照明负载的输出电压由主驱动器控制在正向电压以下。

公开(公告)号：US09210773B1

公开(公告)日：2015-12-08

申请号：US14290359

申请日：2014-05-29

申请人： Donald A. Sargent ,  Timothy Chen

发明人： Donald A. Sargent ,  Timothy Chen

IPC分类号： H05B37/02 ,  F21V21/30 ,  H05B33/08 ,  F21V15/01 ,  F21V19/04

CPC分类号： H05B37/02 ,  F21V15/01 ,  F21V15/012 ,  F21V19/045 ,  F21V21/30 ,  F21V23/009 ,  F21V31/005 ,  F21Y2105/10 ,  F21Y2115/10 ,  H05B33/0803 ,  H05B33/0845 ,  H05B33/086 ,  H05B37/0227 ,  H05B37/0272 ,  H05K3/366 ,  H05K2201/10295

摘要： A light fixture may have a housing containing a lighting element and any number of PCBs. A first PCB section may have circuitry that controls the lighting element. A second PCB section may have an antenna and circuitry that converts RF signals into control signal input to the first PCB section. The second PCB section may be operatively interconnected with the first PCB section, and may be contained in the housing in an orientation projecting from the first PCB section.

摘要翻译： 灯具可以具有容纳照明元件和任何数量的PCB的壳体。 第一PCB部分可以具有控制照明元件的电路。 第二PCB部分可以具有将RF信号转换成输入到第一PCB部分的控制信号的天线和电路。 第二PCB部分可以与第一PCB部分可操作地互连，并且可以以从第一PCB部分突出的方向容纳在壳体中。

公开(公告)号：US08754583B2

公开(公告)日：2014-06-17

申请号：US13353580

申请日：2012-01-19

申请人： Timothy Chen ,  James K Skully

发明人： Timothy Chen ,  James K Skully

IPC分类号： H05B41/14

CPC分类号： H05B41/14 ,  H05B41/3924 ,  H05B41/3927 ,  Y02B20/19

摘要： An electronic ballast has a rectifying circuit for rectifying an input voltage controlled by a phase dimmer. The electronic ballast has an averaging circuit for averaging current received from the rectifying circuit to produce a reference voltage. The electronic ballast has a control integrated circuit for providing an output current to a compact fluorescent lamp by performing a linear to logarithmic conversion of the reference current, according to a predefined conversion function.

摘要翻译： 电子镇流器具有用于整流由相位调光器控制的输入电压的整流电路。 电子镇流器具有用于对从整流电路接收的电流进行平均以产生参考电压的平均电路。 电子镇流器具有控制集成电路，用于根据预定义的转换功能，通过执行基准电流的线性对数转换来向紧凑型荧光灯提供输出电流。

公开(公告)号：US08698407B1

公开(公告)日：2014-04-15

申请号：US13295868

申请日：2011-11-14

申请人： Timothy Chen ,  John Boyle

发明人： Timothy Chen ,  John Boyle

IPC分类号： H05B37/00 ,  H05B39/00 ,  H05B41/00

CPC分类号： H05B33/0812 ,  Y02B20/345

摘要： An inductorless LED driver powers a string of low current LEDs. A phase controlled triac dimmer, serially connected to a full-wave rectifier circuit, performs as an LED current and triac holding current control element. The output of the full-wave rectifier circuit is divided into two circuit paths; the first path provides power to drive a string of serially-connected low-current LEDs, and the second path connects to a dynamic load, which supplies a holding current that flows through the triac dimmer. There are two feedback control systems; the first regulates the luminance of the LEDs; the second regulates the triac holding current to eliminate lamp flicker.

摘要翻译： 无电感LED驱动器为一串低电流LED供电。 串联连接到全波整流电路的相控三极双向可控硅调光器作为LED电流和三端双向可控硅开关元件保持电流控制元件。 全波整流电路的输出分为两路电路; 第一路径提供驱动一串串联的低电流LED的电力，并且第二路径连接到动态负载，动态负载提供流过三端双向可控硅调光器的保持电流。 有两个反馈控制系统; 首先调节LED的亮度; 第二个调节三端双向可控硅开关电压以消除灯闪烁。

公开(公告)号：US20130307417A1

公开(公告)日：2013-11-21

申请号：US13473559

申请日：2012-05-16

申请人： Timothy Chen ,  Haiyan Wang

发明人： Timothy Chen ,  Haiyan Wang

IPC分类号： H05B37/02

CPC分类号： H05B33/0809

摘要： A driver circuit for driving an LED includes a rectifier circuit to receive AC voltage and to convert the AC voltage to DC voltage. The driver circuit further includes a filter circuit for filtering the DC voltage. The driver circuit further includes a detection circuit for determining a change in the filtered DC voltage over a predetermined time interval. The driver circuit further includes a dampening circuit for dampening the filtered DC voltage responsive to the detection circuit determining that the change in filtered DC voltage over the predetermined time interval exceeds a predetermined threshold.

摘要翻译： 用于驱动LED的驱动器电路包括用于接收AC电压并将AC电压转换为DC电压的整流器电路。 驱动器电路还包括用于对直流电压进行滤波的滤波电路。 驱动器电路还包括用于在预定时间间隔内确定经滤波的DC电压的变化的检测电路。 驱动器电路还包括用于衰减滤波后的DC电压的阻尼电路，该阻尼电路响应于检测电路确定在预定时间间隔内滤波的直流电压的变化超过预定阈值。

公开(公告)号：US08487551B1

公开(公告)日：2013-07-16

申请号：US12773015

申请日：2010-05-04

申请人： Timothy Chen ,  James Kevin Skully

发明人： Timothy Chen ,  James Kevin Skully

IPC分类号： H05B37/02

CPC分类号： H05B41/2855 ,  Y02B20/185

摘要： In one embodiment, a self-oscillating electronic ballast for discharge tube type lamps which increases efficiency and has IEC-standard end of lamp life protection. Efficiency is enhanced by placing primary resonant capacitor (351a) in parallel with cathode conduction loop (270) while retaining a minimal secondary resonant capacitor (351b) within the cathode conduction loop (270). IEC-standard end of lamp life protection is achieved by placing the primary winding (323) of the base drive transformer (357) within the cathode conduction loop (270) of the ballast circuit, and employing a dampening capacitor (307) to suppress the erroneous base drive signals generated by coupling in the secondary windings (325, 327) as a lamp nears end of lamp life. Other embodiments are described and shown.

摘要翻译： 在一个实施例中，用于放电管型灯的自振荡电子镇流器，其提高效率并且具有IEC标准的灯寿命保护结束。 通过将初级谐振电容器（351a）与阴极导通回路（270）并联，同时保持阴极导通回路（270）内的最小次级谐振电容器（351b）而提高效率。 通过将基极驱动变压器（357）的初级绕组（323）放置在镇流器电路的阴极导通回路（270）内，并采用阻尼电容器（307）来抑制IEC标准的灯寿命保护结束 通过在次级绕组（325,327）中耦合作为靠近灯寿命结束的灯而产生的错误的基本驱动信号。 描述和示出了其他实施例。

公开(公告)号：US20120086351A1

公开(公告)日：2012-04-12

申请号：US12901711

申请日：2010-10-11

申请人： Bruce Roberts ,  Timothy Chen

发明人： Bruce Roberts ,  Timothy Chen

IPC分类号： H05B37/02

CPC分类号： H05B41/295

摘要： A ballast circuit (6) comprises a rectifier circuit (8) and dual starting circuits (11, 13) that ensure ballast startup and lamp ignition regardless of input waveform half cycle. The first starting circuit comprises resonant circuit (10), and the second starting circuit includes a resistor (11). The resistor (11) comprising the second startup circuit provides a bias resistance to the second switches (72) to ensure ballast startup when an oscillating input waveform is in a negative phase.

摘要翻译： 镇流器电路（6）包括整流器电路（8）和双重起动电路（11,13），其确保镇流器启动和灯点亮，而与输入波形半周期无关。 第一启动电路包括谐振电路（10），第二启动电路包括电阻器（11）。 包括第二启动电路的电阻器（11）向第二开关（72）提供偏置电阻，以在振荡输入波形处于负相位时确保镇流器启动。

公开(公告)号：US07944155B2

公开(公告)日：2011-05-17

申请号：US12273131

申请日：2008-11-18

申请人： Timothy Chen ,  James K. Skully

发明人： Timothy Chen ,  James K. Skully

IPC分类号： H05B39/04 ,  H05B41/36

CPC分类号： H05B33/0818 ,  H05B33/0827 ,  Y02B20/347

摘要： A single-converter circuit-based LED driver circuit (10) with isolated multi-channel outputs is disclosed. The circuit (10) includes an IC control circuit (11), a plurality of isolated output channels (70, 74) each having an output current sensing and conditioning circuit (74, 90), and an output current regulation circuit (128). The output current regulation circuit (128) includes a voltage-sensing transformer winding (T4) that senses an output voltage level across a secondary side of the circuit (10), and a peak output current sensing component (156) that senses output currents from the isolated output channels and determines which channel has a highest current output. Additionally, the circuit (10) facilitates providing output current regulation when detected output voltage is below a predetermined threshold, and providing output current regulation when the detected output voltage is above the predetermined threshold.

摘要翻译： 公开了一种具有隔离多通道输出的单转换器基于电路的LED驱动电路（10）。 电路（10）包括IC控制电路（11），多个具有输出电流检测和调理电路（74,90）的隔离输出通道（70,74）和输出电流调节电路（128）。 输出电流调节电路（128）包括感测电路（10）的次级侧的输出电压电平的电压感测变压器绕组（T4）和感测来自电路（10）的输出电流的峰值输出电流感测部件（156） 隔离的输出通道并确定哪个通道具有最高的电流输出。 此外，当检测到的输出电压低于预定阈值时，电路（10）便于提供输出电流调节，并且当检测到的输出电压高于预定阈值时提供输出电流调节。