公开(公告)号：US09030117B2

公开(公告)日：2015-05-12

申请号：US13548257

申请日：2012-07-13

Applicant: Paolo De Anna ,  Ilan D'Incà

Inventor： Paolo De Anna ,  Ilan D'Incà

IPC: H05B37/00 ,  H05B39/00 ,  H05B41/14 ,  H05B41/16 ,  H05B41/24 ,  H05B37/02 ,  H05B33/08 ,  H05B41/28 ,  H05B41/285 ,  H05B41/292 ,  H05B41/298 ,  H02M3/335

CPC classification number: H05B37/02 ,  H02M3/335 ,  H05B33/0815 ,  H05B33/0884 ,  H05B41/28 ,  H05B41/2853 ,  H05B41/2923 ,  H05B41/2983

Abstract: In various embodiments, a method for powering light sources from a input power supply through a converter circuit is provided including a primary side and a secondary side separated by a galvanic barrier, wherein the primary side includes a power factor control block with an output capacitor. The method may include providing save circuitry on said secondary side for saving operational data of the converter upon failure of said input power supply; and powering said save circuitry during saving said operational data with energy derived from said output capacitor of said power factor control block.

Abstract translation: 在各种实施例中，提供了一种用于通过转换器电路从输入电源供电光源的方法，包括由电隔离层隔开的初级侧和次级侧，其中初级侧包括具有输出电容器的功率因数控制块。 该方法可以包括在所述次级侧提供保存电路，以便在所述输入电源故障时保存转换器的操作数据; 以及在利用从所述功率因数控制块的所述输出电容器获得的能量来保存所述操作数据期间为所述保存电路供电。

公开(公告)号：US08749144B2

公开(公告)日：2014-06-10

申请号：US12573073

申请日：2009-10-02

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

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

IPC: H05B37/00

CPC classification number: H05B41/282 ,  H05B41/2853 ,  Y02B20/186

Abstract: 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.

Abstract translation: 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：US08344646B2

公开(公告)日：2013-01-01

申请号：US11369892

申请日：2006-03-06

Applicant: Huijie Xue ,  Ning Zhai

Inventor： Huijie Xue ,  Ning Zhai

IPC: H05B37/02

CPC classification number: H05B41/2824 ,  H02M1/10 ,  H05B41/28 ,  H05B41/2853

Abstract: A ballast and method for operating a ballast includes a switch or other circuit for connecting and disconnecting a voltage multiplier to a rectifier circuit. A control circuit for controlling the switch senses an input voltage and connects the voltage multiplier to the rectifier circuit when an input voltage falls below a selected voltage level.

Abstract translation: 用于操作镇流器的镇流器和方法包括用于将电压倍增器与整流器电路连接和断开的开关或其它电路。 用于控制开关的控制电路感测输入电压，并且当输入电压低于所选择的电压电平时将电压倍增器连接到整流器电路。

公开(公告)号：US08274227B2

公开(公告)日：2012-09-25

申请号：US12774928

申请日：2010-05-06

Applicant: Anthony Mangiaracina

Inventor： Anthony Mangiaracina

IPC: H05B37/00 ,  H05B41/14

CPC classification number: H05B41/28 ,  H02H11/002 ,  H02J9/065 ,  H05B41/2853 ,  Y10T307/625

Abstract: A high-efficiency ballast arrangement for a lighting fixture has an automatic polarity protection circuit for supplying an output DC voltage of constant polarity no matter in which orientation the fixture is mounted in a DC-powered suspended ceiling system having a DC power supply. A main DC ballast circuit includes a main DC ballast powered by the output DC voltage from the protection circuit to enable a lamp in the fixture to be illuminated during normal operation. An emergency back-up DC ballast circuit includes a battery charged to a charged DC voltage by the output DC voltage during the normal operation, and an emergency DC ballast powered by the charged DC voltage from the battery to enable the lamp in the fixture to be illuminated during emergency operation upon failure of the DC power supply.

Abstract translation: 用于照明器具的高效镇流器布置具有自动极性保护电路，用于提供具有恒定极性的输出DC电压，而不管夹具安装在具有直流电源的直流供电悬吊式天花板系统中的哪个取向。 主DC镇流器电路包括由保护电路的输出DC电压供电的主DC镇流器，以使得灯具中的灯在正常工作期间被照亮。 紧急备用DC镇流器电路包括在正常操作期间通过输出DC电压充电到充电的DC电压的电池和由来自电池的充电的DC电压供电的紧急直流镇流器，以使灯具中的灯能够 在直流电源故障时，在紧急操作期间点亮。

公开(公告)号：US07573207B2

公开(公告)日：2009-08-11

申请号：US11871123

申请日：2007-10-11

Applicant: Changshan Zhang ,  Jun Ye ,  Lieyi Fang

Inventor： Changshan Zhang ,  Jun Ye ,  Lieyi Fang

IPC: G05F1/00

CPC classification number: H05B41/282 ,  H05B41/2853

Abstract: System and method for driving a cold-cathode fluorescent lamp. The system includes a control subsystem configured to generate one or more control signals, and a power supply subsystem configured to receive the one or more control signals and a DC input voltage, convert the DC input voltage to an AC output voltage, and send the AC output voltage to a cold-cathode fluorescent lamp. If the DC input voltage is lower than a predetermined threshold, the system for driving the cold-cathode fluorescent lamp is turned off in response to the one or more control signals.

Abstract translation: 用于驱动冷阴极荧光灯的系统和方法。 该系统包括配置成产生一个或多个控制信号的控制子系统和被配置为接收一个或多个控制信号和DC输入电压的电源子系统，将DC输入电压转换成AC输出电压，并且发送AC 输出电压到冷阴极荧光灯。 如果直流输入电压低于预定阈值，则根据一个或多个控制信号关闭用于驱动冷阴极荧光灯的系统。

公开(公告)号：US20090167209A1

公开(公告)日：2009-07-02

申请号：US11988734

申请日：2006-07-06

Applicant: Klaus Fischer

Inventor： Klaus Fischer

IPC: H05B41/36

CPC classification number: H05B41/2853 ,  H02H7/1252

Abstract: A circuit arrangement for operating at least one electric lamp having an inverter has at least one first and one second bridge transistor arranged in series with one another, a first drive circuit for the first bridge transistor; a second drive circuit for the second bridge transistor; the and second drive circuits being designed to drive the first and second bridge transistors to switch alternately completely on and off during normal lamp operation; and at least one protective apparatus; the at least one protective apparatus being designed, in the case of a value for a reference voltage, which is correlated with the voltage across the bridge transistor which has just been switched off, above a predeterminable limit value, to drive the bridge transistor, which has just been completely switched on, such that it is no longer completely switched on. A related method is also described.

Abstract translation: 用于操作具有逆变器的至少一个电灯的电路装置具有彼此串联布置的至少一个第一和第二桥接晶体管，用于第一桥式晶体管的第一驱动电路; 用于所述第二电桥晶体管的第二驱动电路; 所述第二驱动电路被设计成在正常的灯操作期间驱动所述第一和第二桥式晶体管交替地完全开关; 和至少一个保护装置; 所述至少一个保护装置被设计为在参考电压的值的情况下，其与刚刚关闭的桥式晶体管的电压相关，高于可预定的极限值，以驱动桥式晶体管，其中 刚刚完全打开，使其不再完全打开。 还描述了相关方法。

公开(公告)号：US20080246418A1

公开(公告)日：2008-10-09

申请号：US11871125

申请日：2007-10-11

Applicant: Changshan Zhang ,  Jun Ye ,  Lieyi Fang

Inventor： Changshan Zhang ,  Jun Ye ,  Lieyi Fang

IPC: H05B41/36

CPC classification number: H05B41/282 ,  H05B41/2853

Abstract: System and method for driving a cold-cathode fluorescent lamp. The system includes a control subsystem configured to generate one or more control signals, and a power supply subsystem configured to receive the one or more control signals and a DC input voltage, convert the DC input voltage to an AC output voltage, and send the AC output voltage to a cold-cathode fluorescent lamp. If the DC input voltage is lower than a predetermined threshold, the system for driving the cold-cathode fluorescent lamp is turned off in response to the one or more control signals.

公开(公告)号：US20080088256A1

公开(公告)日：2008-04-17

申请号：US11871123

申请日：2007-10-11

Applicant: Changshan Zhang ,  Jun Ye ,  Lieyi Fang

Inventor： Changshan Zhang ,  Jun Ye ,  Lieyi Fang

IPC: H05B41/36

CPC classification number: H05B41/282 ,  H05B41/2853

Abstract: System and method for driving a cold-cathode fluorescent lamp. The system includes a control subsystem configured to generate one or more control signals, and a power supply subsystem configured to receive the one or more control signals and a DC input voltage, convert the DC input voltage to an AC output voltage, and send the AC output voltage to a cold-cathode fluorescent lamp. If the DC input voltage is lower than a predetermined threshold, the system for driving the cold-cathode fluorescent lamp is turned off in response to the one or more control signals.

Abstract translation: 用于驱动冷阴极荧光灯的系统和方法。 该系统包括配置成产生一个或多个控制信号的控制子系统和被配置为接收一个或多个控制信号和DC输入电压的电源子系统，将DC输入电压转换成AC输出电压，并且发送AC 输出电压到冷阴极荧光灯。 如果直流输入电压低于预定阈值，则根据一个或多个控制信号关闭用于驱动冷阴极荧光灯的系统。

公开(公告)号：US20080074909A1

公开(公告)日：2008-03-27

申请号：US11535699

申请日：2006-09-27

Applicant: Bhadresh H. MEHTA

Inventor： Bhadresh H. MEHTA

IPC: H02H7/125

CPC classification number: H02H7/1213 ,  H05B41/2853

Abstract: A circuit (20) for powering a load (50) includes a rectifier circuit (200), a voltage clamping circuit (300), and a DC-to-DC converter (400) such as a buck-boost converter. Voltage clamping circuit (300) is coupled between the rectifier circuit (200) and the DC-to-DC converter (400), and functions to prevent the input voltage (VIN) of the DC-to-DC converter (400) from exceeding a predetermined acceptable level, so as to protect the DC-to-DC converter (400) from damage due to transients in a voltage (VAC) provided by an AC line source (40). Preferably, voltage clamping circuit (300) is realized by an arrangement that includes a voltage divider circuit (320), a voltage sensing circuit (340), and an energy-limiting circuit (360), and is well-suited for use in power supplies and in electronic ballasts for powering gas discharge lamps.

Abstract translation: 用于为负载（50）供电的电路（20）包括整流器电路（200），电压钳位电路（300）和诸如降压 - 升压转换器的DC-DC转换器（400）。 电压钳位电路（300）耦合在整流电路（200）和DC-DC转换器（400）之间，并且用于防止DC-到DC转换器（400）的输入电压（V IN IN） -DC转换器（400）超过预定的可接受电平，以便保护DC-D​​C转换器（400）免受由AC提供的电压（V AC AC）中的瞬变的损坏 线源（40）。 优选地，钳位电路（300）通过包括分压器电路（320），电压感测电路（340）和限能电路（360）的装置实现，并且非常适合用于电力 供应和电子镇流器为气体放电灯供电。

公开(公告)号：US20070285029A1

公开(公告)日：2007-12-13

申请号：US11646495

申请日：2006-12-28

Applicant: Byoung Chul Kim

Inventor： Byoung Chul Kim

IPC: H05B41/24

CPC classification number: H05B41/2853

Abstract: A backlight driving apparatus for a liquid crystal display device includes a light source, an AC driver for supplying a high voltage AC power to turn on the light source, and a protection circuit electrically connected to the AC driver responsive to an input voltage lower than a reference voltage for stopping the driving of the AC driver.

Abstract translation: 一种用于液晶显示装置的背光驱动装置，包括光源，用于提供高压AC电源以接通光源的AC驱动器，以及响应于低于a的输入电压而电连接到AC驱动器的保护电路 用于停止AC驱动器驱动的参考电压。