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    • 84. 发明授权
    • Variable-gain low-noise amplifier
    • 可变增益低噪声放大器
    • US07679446B2
    • 2010-03-16
    • US12040303
    • 2008-02-29
    • Young Jin KimMyung Woon Hwang
    • Young Jin KimMyung Woon Hwang
    • H03G3/00
    • H03G9/24H03F1/14H03F1/223H03F3/19H03F3/72H03F2200/153H03F2200/294H03F2200/492H03G1/0094H03H7/38H03H11/1213
    • A variable-gain low-noise amplifier is provided. The variable-gain low-noise amplifier includes a first load, a second load, an input transistor, a pole/zero control circuit, and a gain control circuit. A first terminal of the first load is connected to a power-source voltage, and a second terminal thereof is connected to an output terminal. The second load is operated in response to a bias voltage, and a first terminal thereof is connected to the output terminal. A first terminal of the input transistor is connected to the second terminal of the second load, and a gate thereof is connected to an input terminal. The pole/zero control circuit adjusts frequency characteristics and a gain in response to at least one pole/zero control signal. A first terminal of the pole/zero control circuit is connected to the input terminal, and a second terminal thereof is connected to the output terminal. The gain control circuit adjusts the gain in response to at least one gain control signal. A first terminal of the gain control circuit is connected to a common terminal of the second load and the input transistor, and a second terminal thereof is connected to the input terminal, and a third terminal thereof of is connected to a ground voltage.
    • 提供可变增益低噪声放大器。 可变增益低噪声放大器包括第一负载,第二负载,输入晶体管,极/零控制电路和增益控制电路。 第一负载的第一端子连接到电源电压,其第二端子连接到输出端子。 第二负载响应于偏压而工作,其第一端连接到输出端。 输入晶体管的第一端子连接到第二负载的第二端子,并且其栅极连接到输入端子。 极/零控制电路响应于至少一个极/零控制信号调整频率特性和增益。 极/零控制电路的第一端子连接到输入端子,并且其第二端子连接到输出端子。 增益控制电路响应于至少一个增益控制信号调整增益。 增益控制电路的第一端子连接到第二负载和输入晶体管的公共端子,并且其第二端子连接到输入端子,并且其第三端子连接到接地电压。
    • 87. 发明申请
    • ICE TRAY
    • 冰盘
    • US20090020681A1
    • 2009-01-22
    • US12142132
    • 2008-06-19
    • Tae Hee LEEHong Hee ParkJoon Hwan OhYoung Jin KimKwang Ha Suh
    • Tae Hee LEEHong Hee ParkJoon Hwan OhYoung Jin KimKwang Ha Suh
    • F25C1/24
    • F25C1/22
    • An ice tray is provided that prevents the overflow or splashing of water or thin ice out of the ice tray as water is supplied to the ice tray, or when the ice tray is shaken by an external force. The ice tray may include a plurality of receiving portions that receive water for freezing into ice pieces. An overflow preventing portion may extend upward from upper edges of the receiving portions to form a barrier to water flowing out of the ice tray. Alternatively, the receiving parts may be positioned within a corresponding plurality of location parts having water proofing walls extending upward therefrom to inhibit the unintentional flow of water or thin ice out of the receiving portions of the ice tray.
    • 提供了一个冰盘,当水被供应到冰盘时,或当冰盘被外力摇动时,防止水或薄冰溢出或溅出冰盘的冰盘。 冰盘可以包括多个容纳部分,其接收水以冻结成冰块。 溢流防止部分可以从接收部分的上边缘向上延伸以形成从冰盘流出的水的屏障。 或者,接收部件可以定位在具有从其向上延伸的防水壁的对应的多个位置部件中,以防止冰或薄冰从冰托的接收部分的无意的流动。
    • 90. 发明授权
    • Catalytic hydrogen peroxide decomposer in water-cooled reactors
    • 水冷反应器中催化过氧化氢分解器
    • US06259758B1
    • 2001-07-10
    • US09259645
    • 1999-02-26
    • Young Jin KimLeonard William NiedrachGeorge Charles SogoianRobert Lee Cowan, II
    • Young Jin KimLeonard William NiedrachGeorge Charles SogoianRobert Lee Cowan, II
    • G21C900
    • G21C17/0225G21Y2002/103
    • A metal cooling tube of a water-cooled nuclear reactor, having an inner surface thereof exposed to an aqueous cooling medium containing hydrogen peroxide. The cooling tube has its inner surface coated with matter selected from the group consisting of the element manganese, molybdenum, zinc, copper, cadmium for absorbing such hydrogen peroxide and then affecting decomposition of the hydrogen peroxide in the aqueous medium. In preferred embodiment such coating is manganese and oxides thereof. A method for lowering the electrochemical corrosion potential of a metal allow cooling tube exposed to an aqueous medium in a water-cooled nuclear reactor is also disclosed. Such method comprises the step of coating an inner surface of such tube with matter selected from the group of elements comprising manganese, molybdenum, zinc, copper, cadmium, so as to permit absorption and hydrogen peroxide in such aqueous medium and effect decomposition of hydrogen peroxide in such aqueous medium.
    • 水冷核反应堆的金属冷却管,其内表面暴露于含有过氧化氢的含水冷却介质中。 冷却管的内表面涂有选自元素锰,钼,锌,铜,镉的物质,用于吸收这种过氧化氢,然后影响水介质中过氧化氢的分解。 在优选的实施方案中,这种涂层是锰及其氧化物。 还公开了一种用于降低金属的电化学腐蚀电位的方法,允许在水冷核反应堆中暴露于水性介质的冷却管。 这种方法包括用选自锰,钼,锌,铜,镉的元素组的物质涂覆这种管的内表面的步骤,以便允许在这种水性介质中吸收和过氧化氢并且实现过氧化氢的分解 在这种水性介质中。