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    • 1. 发明授权
    • Light emitting diode driving circuit having voltage detection
    • 具有电压检测的发光二极管驱动电路
    • US08144111B2
    • 2012-03-27
    • US12251176
    • 2008-10-14
    • Jin Hwan KimNam Kyu LeeDoo Ho YooYoung Jong Yoo
    • Jin Hwan KimNam Kyu LeeDoo Ho YooYoung Jong Yoo
    • G09G3/36
    • H05B33/0815G09G3/342G09G2320/064G09G2330/04H05B33/0827Y02B20/347
    • There is provided a driving circuit of a light emitting device. The driving circuit of a light emitting may include: a DC/DC converter converting an input DC voltage into an output DC voltage; a light emitting device block including a plurality of LED groups connected to an output terminal of the DC/DC converter; a current source circuit unit including a plurality of current sources; a voltage detection unit detecting the output DC voltage of the DC/DC converter; a minimum voltage detection unit detecting a minimum voltage among a plurality of voltages between the plurality of LED groups and the plurality of current sources, respectively; and a single comparator including a first non-inverting input terminal receiving the voltage detected by the voltage detection unit, a second non-inverting input terminal receiving the minimum voltage detected by the minimum voltage detection unit, and an inverting input terminal receiving a predetermined reference voltage.
    • 提供了一种发光装置的驱动电路。 发光的驱动电路可以包括:将输入DC电压转换为输出DC电压的DC / DC转换器; 发光器件块,包括连接到DC / DC转换器的输出端子的多个LED组; 包括多个电流源的电流源电路单元; 电压检测单元,检测DC / DC转换器的输出直流电压; 最小电压检测单元,分别检测所述多个LED组和所述多个电流源之间的多个电压中的最小电压; 以及单个比较器,包括接收由电压检测单元检测到的电压的第一非反相输入端子,接收由最小电压检测单元检测到的最小电压的第二非反相输入端子和接收预定参考值的反相输入端子 电压。
    • 4. 发明授权
    • Method of preparing silica aerogel powder
    • 制备二氧化硅气凝胶粉末的方法
    • US08961919B2
    • 2015-02-24
    • US13099936
    • 2011-05-03
    • Young Chul JoungMyung Je RoeYoung Jong YooJong Chul ParkHee Jung ChoiMin Woo Kim
    • Young Chul JoungMyung Je RoeYoung Jong YooJong Chul ParkHee Jung ChoiMin Woo Kim
    • C01B33/12C01B33/158C01B33/16
    • C01B33/158C01B33/166
    • A method of preparing silica aero-gel powders having a short preparation time and stable preparation processes. In the method, the silica aerogel powders are generated by using a water glass solution, an inorganic acid, an organosilane compound and an organic solvent. The method includes dispersion-solution generating, gelating and solvent exchanging and drying. In the dispersion-solution generating, a dispersion solution is generated by dispersing the water glass solution and the organosilane compound in the organic solvent. In the gelating and solvent exchanging, silica hydrogel is generated by adding the inorganic acid to the dispersion solution and simultaneously performing gelating and solvent-exchanging. In the drying, the silica aerogel powders are generated by drying the silica hydro-gel.
    • 一种制备具有较短制备时间和稳定制备方法的二氧化硅气凝胶粉末的方法。 在该方法中,通过使用水玻璃溶液,无机酸,有机硅烷化合物和有机溶剂来生成二氧化硅气凝胶粉末。 该方法包括分散溶液产生,凝胶化和溶剂交换和干燥。 在分散液生成中,通过将水玻璃溶液和有机硅烷化合物分散在有机溶剂中而产生分散液。 在凝胶化和溶剂交换中,通过向分散液中加入无机酸,同时进行凝胶化和溶剂交换,生成二氧化硅水凝胶。 在干燥过程中,通过干燥二氧化硅水凝胶来生成二氧化硅气凝胶粉末。
    • 6. 发明申请
    • METHOD OF PREPARING SILICA AEROGEL POWDER
    • 制备二氧化硅气泡粉的方法
    • US20120225003A1
    • 2012-09-06
    • US13099936
    • 2011-05-03
    • Young Chul JOUNGMyung Je RoeYoung Jong YooJong Chul ParkHee Jung ChoiMin Woo Kim
    • Young Chul JOUNGMyung Je RoeYoung Jong YooJong Chul ParkHee Jung ChoiMin Woo Kim
    • C01B33/158
    • C01B33/158C01B33/166
    • A method of preparing silica aero-gel powders having a short preparation time and stable preparation processes. In the method, the silica aerogel powders are generated by using a water glass solution, an inorganic acid, an organosilane compound and an organic solvent. The method includes dispersion-solution generating, gelating and solvent exchanging and drying. In the dispersion-solution generating, a dispersion solution is generated by dispersing the water glass solution and the organosilane compound in the organic solvent. In the gelating and solvent exchanging, silica hydrogel is generated by adding the inorganic acid to the dispersion solution and simultaneously performing gelating and solvent-exchanging. In the drying, the silica aerogel powders are generated by drying the silica hydro-gel.
    • 一种制备具有较短制备时间和稳定制备方法的二氧化硅气凝胶粉末的方法。 在该方法中,通过使用水玻璃溶液,无机酸,有机硅烷化合物和有机溶剂来生成二氧化硅气凝胶粉末。 该方法包括分散溶液产生,凝胶化和溶剂交换和干燥。 在分散液生成中,通过将水玻璃溶液和有机硅烷化合物分散在有机溶剂中而产生分散液。 在凝胶化和溶剂交换中,通过向分散液中加入无机酸,同时进行凝胶化和溶剂交换,生成二氧化硅水凝胶。 在干燥过程中,通过干燥二氧化硅水凝胶来生成二氧化硅气凝胶粉末。