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    • 2. 发明授权
    • Power supply for lighting and luminaire
    • 照明和照明用电源
    • US08836234B2
    • 2014-09-16
    • US13533667
    • 2012-06-26
    • Noriyuki KitamuraHirokazu OtakeYuji Takahashi
    • Noriyuki KitamuraHirokazu OtakeYuji Takahashi
    • H05B37/02
    • H05B33/0809
    • According to one embodiment, a power supply for lighting includes a rectifying circuit, a smoothing capacitor, and a current control circuit. The rectifying circuit rectifies a phase-controlled alternating-current voltage supplied to between a pair of input terminals. The smoothing capacitor is connected to a high-potential terminal and a low-potential terminal of the rectifying circuit. A first electric current flows to the current control circuit in a period when an absolute value of the alternating-current voltage is lower than a specified value. After a second electric current larger than the first electric current flows when the absolute value of the alternating-current voltage increases to be equal to or larger than the specified value, the current control circuit is shut off to reduce a current value to be smaller than the second electric current until the absolute value of the alternating-current voltage decreases to be lower than the specified value.
    • 根据一个实施例,用于照明的电源包括整流电路,平滑电容器和电流控制电路。 整流电路对提供给一对输入端子之间的相位控制的交流电压进行整流。 平滑电容器连接到整流电路的高电位端子和低电位端子。 在交流电压的绝对值低于规定值的期间,第一电流流向电流控制电路。 当交流电压的绝对值增加到等于或大于规定值时,大于第一电流的第二电流流过时,电流控制电路被切断以将电流值减小到 直到交流电压的绝对值的第二电流降低到低于规定值。
    • 3. 发明申请
    • Lighting Power Source and Luminaire
    • 照明电源和灯具
    • US20130119878A1
    • 2013-05-16
    • US13608177
    • 2012-09-10
    • Noriyuki KitamuraHirokazu OtakeYuji Takahashi
    • Noriyuki KitamuraHirokazu OtakeYuji Takahashi
    • H05B37/00
    • H05B33/0815
    • A lighting power source according to an embodiment includes a rectification circuit, a smoothing capacitor, a waveform shaping circuit, and a DC-DC converter. The rectification circuit rectifies an AC voltage input thereto.The waveform shaping circuit is connected between the rectification circuit and the smoothing capacitor, performs a switching operation to repeat an ON state and an OFF state when the voltage output from the rectification circuit is relatively high, continues to be in the ON state to allow the current to flow to the rectification circuit when the voltage output from the rectification circuit is relatively low. The DC-DC converter converts a voltage charged in the smoothing capacitor.
    • 根据实施例的照明电源包括整流电路,平滑电容器,波形整形电路和DC-DC转换器。 整流电路对输入的交流电压进行整流。 波形整形电路连接在整流电路和平滑电容器之间,当从整流电路输出的电压相对较高时,执行开关操作以重复ON状态和OFF状态,继续处于ON状态,以允许 当整流电路输出的电压相对较低时,电流流向整流电路。 DC-DC转换器转换在平滑电容器中充电的电压。
    • 4. 发明授权
    • Lighting power source and luminaire
    • 照明电源和灯具
    • US08803433B2
    • 2014-08-12
    • US13608460
    • 2012-09-10
    • Noriyuki KitamuraYuji TakahashiHirokazu Otake
    • Noriyuki KitamuraYuji TakahashiHirokazu Otake
    • H05B37/00
    • H05B33/0854H05B33/0815Y02B20/347
    • A lighting power source according to an embodiment includes a rectifying circuit, a smoothing capacitor, a reference voltage generating circuit, and a DC-DC converter. The rectifying circuit rectifies an AD voltage input thereto. The smoothing capacitor smoothes an output from the rectifying circuit. The reference voltage generating circuit generates a reference voltage on the basis of at least any one of an output voltage of the rectifying circuit and a voltage from the smoothing capacitor. The DC-DC converter includes an output element and a constant current element, and converts the voltage of the smoothing capacitor. The output element receives a supply of a voltage of the smoothing capacitor, oscillates by performing a switching operation which repeats an ON state and an OFF state when the reference voltage is relatively high, and continues the ON state when the reference voltage is relatively low.
    • 根据实施例的照明电源包括整流电路,平滑电容器,参考电压产生电路和DC-DC转换器。 整流电路对输入的AD电压进行整流。 平滑电容平滑整流电路的输出。 参考电压产生电路基于整流电路的输出电压和来自平滑电容器的电压中的至少一个产生参考电压。 DC-DC转换器包括输出元件和恒流元件,并且对平滑电容器的电压进行转换。 输出元件接收平滑电容器的电压供给,当参考电压相对较高时,执行重复ON状态和OFF状态的开关动作而振荡,当基准电压相对较低时,继续接通状态。
    • 5. 发明申请
    • Lighting Power Source and Luminaire
    • 照明电源和灯具
    • US20130119879A1
    • 2013-05-16
    • US13608460
    • 2012-09-10
    • Noriyuki KitamuraYuji TakahashiHirokazu Otake
    • Noriyuki KitamuraYuji TakahashiHirokazu Otake
    • H05B37/00
    • H05B33/0854H05B33/0815Y02B20/347
    • A lighting power source according to an embodiment includes a rectifying circuit, a smoothing capacitor, a reference voltage generating circuit, and a DC-DC converter. The rectifying circuit rectifies an AD voltage input thereto. The smoothing capacitor smoothes an output from the rectifying circuit. The reference voltage generating circuit generates a reference voltage on the basis of at least any one of an output voltage of the rectifying circuit and a voltage from the smoothing capacitor. The DC-DC converter includes an output element and a constant current element, and converts the voltage of the smoothing capacitor. The output element receives a supply of a voltage of the smoothing capacitor, oscillates by performing a switching operation which repeats an ON state and an OFF state when the reference voltage is relatively high, and continues the ON state when the reference voltage is relatively low.
    • 根据实施例的照明电源包括整流电路,平滑电容器,参考电压产生电路和DC-DC转换器。 整流电路对输入的AD电压进行整流。 平滑电容平滑整流电路的输出。 参考电压产生电路基于整流电路的输出电压和来自平滑电容器的电压中的至少一个产生参考电压。 DC-DC转换器包括输出元件和恒流元件,并且对平滑电容器的电压进行转换。 输出元件接收平滑电容器的电压供给,当基准电压相对较高时,通过执行重复ON状态和OFF状态的开关动作进行振荡,并且在基准电压相对较低时继续接通状态。
    • 9. 发明授权
    • Lighting power source and luminaire
    • 照明电源和灯具
    • US08884536B2
    • 2014-11-11
    • US13608177
    • 2012-09-10
    • Noriyuki KitamuraHirokazu OtakeYuji Takahashi
    • Noriyuki KitamuraHirokazu OtakeYuji Takahashi
    • H05B37/00H05B33/08
    • H05B33/0815
    • A lighting power source according to an embodiment includes a rectification circuit, a smoothing capacitor, a waveform shaping circuit, and a DC-DC converter. The rectification circuit rectifies an AC voltage input thereto. The waveform shaping circuit is connected between the rectification circuit and the smoothing capacitor, performs a switching operation to repeat an ON state and an OFF state when the voltage output from the rectification circuit is relatively high, continues to be in the ON state to allow the current to flow to the rectification circuit when the voltage output from the rectification circuit is relatively low. The DC-DC converter converts a voltage charged in the smoothing capacitor.
    • 根据实施例的照明电源包括整流电路,平滑电容器,波形整形电路和DC-DC转换器。 整流电路对输入的交流电压进行整流。 波形整形电路连接在整流电路和平滑电容器之间,当从整流电路输出的电压相对较高时,执行开关操作以重复ON状态和OFF状态,继续处于ON状态,以允许 当整流电路输出的电压相对较低时,电流流向整流电路。 DC-DC转换器转换在平滑电容器中充电的电压。
    • 10. 发明申请
    • POWER FACTOR CONTROL CIRCUIT AND POWER SOURCE DEVICE
    • 功率因数控制电路和电源设备
    • US20130170260A1
    • 2013-07-04
    • US13608869
    • 2012-09-10
    • Noriyuki KITAMURAYuji TakahashiHirokazu Otake
    • Noriyuki KITAMURAYuji TakahashiHirokazu Otake
    • H02M7/155H02M7/06
    • H02M1/4225H02M3/135H02M3/1563Y02B70/126
    • A power factor control circuit of an embodiment includes an inductor, a switching element, a constant current element, a feedback coil, and a control circuit. The switching element is connected to one end of the inductor in series, performs a switching operation of repeating an on-state and an off-state when an input voltage is relatively high, continues the on-state when the input voltage is relatively low, and causes an input current to flow through the inductor. The constant current element is connected to the switching element in series and limits the current of the switching element. The feedback coil is magnetically coupled to the inductor, supplies a voltage to a control terminal of the switching element, and controls the switching element. The control circuit controls a constant current value of the constant current element depending on the input voltage.
    • 实施例的功率因数控制电路包括电感器,开关元件,恒流元件,反馈线圈和控制电路。 开关元件串联连接到电感器的一端,当输入电压相对较高时执行重复导通状态和截止状态的开关操作,当输入电压相对较低时继续导通状态, 并使输入电流流过电感器。 恒流元件串联连接到开关元件,并限制开关元件的电流。 反馈线圈磁耦合到电感器,向开关元件的控制端提供电压,并控制开关元件。 控制电路根据输入电压控制恒流元件的恒定电流值。