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    • 1. 发明申请
    • LIGHT EMITTING DIODE LIGHTING SYSTEM
    • 发光二极管照明系统
    • US20140312806A1
    • 2014-10-23
    • US14000863
    • 2011-10-10
    • Young Jong KimDong Young HuhTaek Soo KimHyun Sik Kim
    • Young Jong KimDong Young HuhTaek Soo KimHyun Sik Kim
    • H05B33/08
    • H05B33/0815H05B33/0851Y02B20/347Y02B20/348
    • An LED lighting system is provided. The LED lighting system includes a main transformer, a voltage detector, a current controller, a second reference voltage supplier, and a power factor compensation circuit. The main transformer transforms an input signal to supply the transformed input signal to an LED group. The voltage detector supplies a control voltage proportional to a level of an input voltage corresponding to the input signal. The current controller includes a first voltage storage, a negative voltage applier, a second voltage storage, switch, and a current control signal generator. The first voltage storage stores the control voltage supplied from the voltage detector or discharges a stored voltage. The negative voltage applier is connected to the first voltage storage, and connected to a ground to apply the control voltage to the ground when the control voltage is a negative voltage. The second voltage storage is connected to the first voltage storage, and stores the control voltage applied through the first voltage storage or discharges a stored voltage. The switch is connected to the second voltage storage, and activated by a driving signal to apply a ground voltage to the second voltage storage. The current control signal generator generates a current control signal according to a voltage signal and gain of the second voltage storage. The first voltage storage or the second voltage storage supplies the current control signal through the voltage detector. The second reference voltage supplier supplies the second reference voltage when the control signal supplied from the voltage detector is equal to or greater than the second reference voltage. The power factor compensation circuit controls a duty ratio of the driving signal according to a level of the current control signal, and controls a peak value of a primary current in the main transformer according to a level of the second reference voltage.
    • 提供LED照明系统。 LED照明系统包括主变压器,电压检测器,电流控制器,第二参考电压供应器和功率因数补偿电路。 主变压器转换输入信号以将变换的输入信号提供给LED组。 电压检测器提供与对应于输入信号的输入电压的电平成比例的控制电压。 电流控制器包括第一电压存储器,负电压施加器,第二电压存储器,开关和电流控制信号发生器。 第一电压存储器存储从电压检测器提供的控制电压或放电所存储的电压。 负电压施加器连接到第一电压存储器,并且当控制电压为负电压时,连接到地面以将控制电压施加到地。 第二电压存储器连接到第一电压存储器,并且存储通过第一电压存储器施加的控制电压或放电存储的电压。 开关连接到第二电压存储器,并由驱动信号激活,以将接地电压施加到第二电压存储器。 电流控制信号发生器根据电压信号和第二电压存储器的增益产生电流控制信号。 第一电压存储器或第二电压存储器通过电压检测器提供电流控制信号。 当从电压检测器提供的控制信号等于或大于第二参考电压时,第二参考电压供应器提供第二参考电压。 功率因数补偿电路根据电流控制信号的电平来控制驱动信号的占空比,并且根据第二参考电压的电平来控制主变压器中的初级电流的峰值。
    • 4. 发明授权
    • Light emitting diode lighting system
    • 发光二极管照明系统
    • US08952624B2
    • 2015-02-10
    • US14000863
    • 2011-10-10
    • Young Jong KimDong Young HuhTaek Soo KimHyun Shik Kim
    • Young Jong KimDong Young HuhTaek Soo KimHyun Shik Kim
    • H05B41/16
    • H05B33/0815H05B33/0851Y02B20/347Y02B20/348
    • An LED lighting system is provided. The LED lighting system includes a main transformer, a voltage detector, a current controller, a second reference voltage supplier, and a power factor compensation circuit. The main transformer transforms an input signal to supply the transformed input signal to an LED group. The voltage detector supplies a control voltage proportional to a level of an input voltage corresponding to the input signal. The current controller includes a first voltage storage, a negative voltage applier, a second voltage storage, switch, and a current control signal generator. The first voltage storage stores the control voltage supplied from the voltage detector or discharges a stored voltage. The negative voltage applier is connected to the first voltage storage, and connected to a ground to apply the control voltage to the ground when the control voltage is a negative voltage. The second voltage storage is connected to the first voltage storage, and stores the control voltage applied through the first voltage storage or discharges a stored voltage. The switch is connected to the second voltage storage, and activated by a driving signal to apply a ground voltage to the second voltage storage. The current control signal generator generates a current control signal according to a voltage signal and gain of the second voltage storage. The first voltage storage or the second voltage storage supplies the current control signal through the voltage detector. The second reference voltage supplier supplies the second reference voltage when the control signal supplied from the voltage detector is equal to or greater than the second reference voltage. The power factor compensation circuit controls a duty ratio of the driving signal according to a level of the current control signal, and controls a peak value of a primary current in the main transformer according to a level of the second reference voltage.
    • 提供LED照明系统。 LED照明系统包括主变压器,电压检测器,电流控制器,第二参考电压供应器和功率因数补偿电路。 主变压器转换输入信号以将变换的输入信号提供给LED组。 电压检测器提供与对应于输入信号的输入电压的电平成比例的控制电压。 电流控制器包括第一电压存储器,负电压施加器,第二电压存储器,开关和电流控制信号发生器。 第一电压存储器存储从电压检测器提供的控制电压或放电所存储的电压。 负电压施加器连接到第一电压存储器,并且当控制电压为负电压时,连接到地面以将控制电压施加到地。 第二电压存储器连接到第一电压存储器,并且存储通过第一电压存储器施加的控制电压或放电存储的电压。 开关连接到第二电压存储器,并由驱动信号激活,以将接地电压施加到第二电压存储器。 电流控制信号发生器根据电压信号和第二电压存储器的增益产生电流控制信号。 第一电压存储器或第二电压存储器通过电压检测器提供电流控制信号。 当从电压检测器提供的控制信号等于或大于第二参考电压时,第二参考电压供应器提供第二参考电压。 功率因数补偿电路根据电流控制信号的电平来控制驱动信号的占空比,并且根据第二参考电压的电平来控制主变压器中的初级电流的峰值。
    • 7. 发明申请
    • POWER SUPPLY
    • 电源
    • US20090201707A1
    • 2009-08-13
    • US12370963
    • 2009-02-13
    • Jun Ho ParkDong Young Huh
    • Jun Ho ParkDong Young Huh
    • H02M7/06
    • H02M3/33576G09G3/20G09G3/296G09G2330/02H02M1/08H02M3/33561Y02B70/1433Y10T307/707
    • A power supply is provided. The power supply comprises: a power input unit switching an input power; a transformer unit inducing an output power of the power input unit to a secondary side; a first power output unit connected to a first coil of the secondary side of the transformer unit; a second power output unit connected to a part of the first coil of the secondary side of the transformer unit; a synchronization signal detecting unit connected to a third coil of the secondary side of the transformer unit and detecting a switching period of the power input unit; and a synchronization signal output unit controlling an operation of the second power output unit according to the detected signal of the synchronization signal detecting unit.
    • 提供电源。 电源包括:切换输入电源的电源输入单元; 变压器单元,其将所述电力输入单元的输出功率引导到次级侧; 连接到所述变压器单元的次级侧的第一线圈的第一电力输出单元; 连接到变压器单元的次级侧的第一线圈的一部分的第二电力输出单元; 连接到所述变压器单元的次级侧的第三线圈并检测所述电力输入单元的开关周期的同步信号检测单元; 以及同步信号输出单元,根据同步信号检测单元的检测信号来控制第二功率输出单元的动作。
    • 8. 发明申请
    • POWER SUPPLY APPARATUS FOR LIGHT EMITTING DIODE
    • 用于发光二极管的电源装置
    • US20120019157A1
    • 2012-01-26
    • US13164284
    • 2011-06-20
    • KYUNG RAE CHODong Young Huh
    • KYUNG RAE CHODong Young Huh
    • H05B37/02
    • H05B33/089H05B33/0818Y02B20/341Y02B20/347
    • A power supply apparatus for LED is provided. The power supply apparatus for LED includes a transformer, a first output unit, and a second output unit. The transformer includes a primary winding, a secondary winding receiving a power induced from the primary winding, and a tertiary winding receiving the power induced from the primary winding. The first output unit is connected to the secondary winding of the transformer, and outputs a first power current to an LED in a first operating condition. The second output unit is connected to the tertiary winding of the transformer, and outputs a second power current to the LED in a second operating condition. When the LED is connected to the power supply apparatus for LED, the power supply apparatus allows a current equal to or less than a predetermined current to flow in the LED, thereby protecting the LED from an overcurrent.
    • 提供一种用于LED的电源装置。 用于LED的电源装置包括变压器,第一输出单元和第二输出单元。 变压器包括初级绕组,接收从初级绕组感应的功率的次级绕组和接收从初级绕组引起的功率的三级绕组。 第一输出单元连接到变压器的次级绕组,并且在第一操作状态下将第一电力电流输出到LED。 第二输出单元连接到变压器的三级绕组,并且在第二操作条件下将第二电力电流输出到LED。 当LED连接到用于LED的电源装置时,电源装置允许等于或小于预定电流的电流流过LED,从而保护LED免受过电流的影响。
    • 9. 发明授权
    • Power supply apparatus for light emitting diode
    • 发光二极管供电装置
    • US08710760B2
    • 2014-04-29
    • US13164284
    • 2011-06-20
    • Kyung Rae ChoDong Young Huh
    • Kyung Rae ChoDong Young Huh
    • H05B37/02
    • H05B33/089H05B33/0818Y02B20/341Y02B20/347
    • A power supply apparatus for LED is provided. The power supply apparatus for LED includes a transformer, a first output unit, and a second output unit. The transformer includes a primary winding, a secondary winding receiving a power induced from the primary winding, and a tertiary winding receiving the power induced from the primary winding. The first output unit is connected to the secondary winding of the transformer, and outputs a first power current to an LED in a first operating condition. The second output unit is connected to the tertiary winding of the transformer, and outputs a second power current to the LED in a second operating condition. When the LED is connected to the power supply apparatus for LED, the power supply apparatus allows a current equal to or less than a predetermined current to flow in the LED, thereby protecting the LED from an overcurrent.
    • 提供一种用于LED的电源装置。 用于LED的电源装置包括变压器,第一输出单元和第二输出单元。 变压器包括初级绕组,接收从初级绕组感应的功率的次级绕组和接收从初级绕组引起的功率的三级绕组。 第一输出单元连接到变压器的次级绕组,并且在第一操作状态下将第一电力电流输出到LED。 第二输出单元连接到变压器的三级绕组,并且在第二操作条件下将第二电力电流输出到LED。 当LED连接到用于LED的电源装置时,电源装置允许等于或小于预定电流的电流流过LED,从而保护LED免受过电流的影响。