Linear voltage controlled variable attenuator with linear DB/V gain slope
    21.
    发明申请
    Linear voltage controlled variable attenuator with linear DB/V gain slope 有权
    具有线性DB / V增益斜率的线性电压控制可变衰减器

    公开(公告)号:US20070072569A1

    公开(公告)日:2007-03-29

    申请号:US11238657

    申请日:2005-09-28

    CPC classification number: H03G1/007 H03G3/3063

    Abstract: A variable attenuator and method of attenuating a signal is presented. The variable attenuator contains an input that receives an input signal to be attenuated. A voltage divider between a resistor and parallel MOSFETs provides the attenuated input signal. The MOSFETs have different sizes and have gates that are connected to a control signal through different resistances such that the larger the MOSFET, the larger the resistance. The control signal is dependent on the output of the attenuator. The arrangement extends the linearity of the attenuation over a wide voltage range of the control signal and decreases the intermodulation distortion of the attenuator.

    Abstract translation: 提出了一种衰减信号的可变衰减器和方法。 可变衰减器包含接收要衰减的输入信号的输入端。 电阻和并联MOSFET之间的分压器提供衰减的输入信号。 MOSFET具有不同的尺寸,并且具有通过不同电阻连接到控制信号的栅极,使得MOSFET越大,电阻越大。 控制信号取决于衰减器的输出。 该布置在控制信号的宽电压范围内延伸衰减的线性,并减小衰减器的互调失真。

    Performance monitor with precise start-stop control
    22.
    发明申请
    Performance monitor with precise start-stop control 有权
    性能监视器具有精确的起停控制

    公开(公告)号:US20060248410A1

    公开(公告)日:2006-11-02

    申请号:US11116672

    申请日:2005-04-27

    CPC classification number: G06F11/348 G06F11/3476

    Abstract: A system and method for performance monitoring in processors is provided. The system and method evaluates the performance of the processor by counting selected events during one or more defined periods. The performance monitor provides improved performance characterization by providing highly-configurable start-stop control over the event counting.

    Abstract translation: 提供了一种用于处理器中性能监控的系统和方法。 系统和方法通过在一个或多个定义的周期内计数所选事件来评估处理器的性能。 性能监视器通过为事件计数提供高度可配置的启动 - 停止控制来提供改进的性能表征。

    Load measurement device
    23.
    发明申请

    公开(公告)号:US20060037405A1

    公开(公告)日:2006-02-23

    申请号:US11240683

    申请日:2005-09-30

    CPC classification number: G01L5/102 G01G3/12 G01L5/101

    Abstract: A variable reluctance load cell for measuring the static or slowly fluctuating load, or tension, on devices is contained in a support tube. A sensor in the tube utilizes opposing C and I shaped magnetic cores attached to opposing ends of the support tube. A magnetic circuit is formed having an inductance defined by the size of the gap between the magnetic cores with the reluctance dominated by the gap. The sensor inductance is coupled with a fixed, predetermined capacitance in a resonant LC circuit, and the resonant frequency is a function of the gap. The sensor is in a cavity within the tube, and the cavity is sealed in a manner that prevents water or other damaging agents from entering the sensor. In this manner, mounting the sensor and tube to a static device and measuring the AC voltage at the sensor, the amount of load, or stress can be determined.

    Gas-liquid dissolving tank
    24.
    发明授权
    Gas-liquid dissolving tank 失效
    气液溶解罐

    公开(公告)号:US4275020A

    公开(公告)日:1981-06-23

    申请号:US944116

    申请日:1978-09-20

    Abstract: A dissolving tank for dissolving a large amount of gas in a liquid and including a generally horizontally disposed tray (28) (29) mounted within the tank (2) (21) to divide the tank (2) (21) into an upper reaction zone (36) and a lower discharge zone (38). The tray (28) (29) has formed therein both a central opening (34) (35) for fluid communication between the discharge zone (38) and the reaction zone (36) and peripheral openings (32) (33) which allow any liquid which collects on the tray (28) (29) to flow from reaction zone (36) to discharge zone (38). The dissolving tank further includes liquid feed means (10) positioned within the tank (2) (21) below the tray (28) (29) to discharge liquid upwardly through the central opening (34) (35) of the tray (28) (29) and into the reaction zone (36). The dissolving tank further includes liquid distribution means (14) mounted within the tank (2) (21) above the tray (28) (29) and having flared sidewalls (15) and a vertically-oriented distribution orifice (16). The distribution means (14) is positioned so that a portion of the liquid discharged upwardly from the feed means (10) impacts on the flared sidewalls (15) and is distributed as droplets within the reaction zone (36) and another portion of the liquid discharged from the feed means (10) passes upwardly through the distribution orifice (16) toward the top (3) of the tank (2) (21).

    Abstract translation: 一种用于将大量气体溶解在液体中并且包括安装在罐(2)(21)内的大致水平布置的盘(28)(29)的溶解槽,以将罐(2)(21)分成上反应 区域(36)和下排放区域(38)。 托盘(28)(29)在其中形成有用于在排放区(38)和反应区(36)之间流体连通的中心开口(34)和周边开口(32)(33),允许任何 收集在托盘(28)(29)上的液体从反应区(36)流到排放区(38)。 溶解罐还包括定位在托盘(28)(29)下方的罐(2)(21)内的液体进料装置(10),以将液体向上排出通过托盘(28)的中心开口(34)(35) (29)并进入反应区(36)。 溶解罐还包括安装在托盘(28)(29)上方的罐(2)(21)内并具有扩口侧壁(15)和垂直定向的分配孔(16)的液体分配装置(14)。 分配装置(14)被定位成使得从进料装置(10)向上排出的液体的一部分冲击扩张的侧壁(15),并且作为液滴分布在反应区(36)内,另一部分液体 从进料装置(10)排出的液体向上通过分配孔(16)朝向罐(2)(21)的顶部(3)。

    High linearity and low noise amplifier with continuously variable gain control
    26.
    发明申请
    High linearity and low noise amplifier with continuously variable gain control 有权
    高线性度和低噪声放大器,连续可变增益控制

    公开(公告)号:US20070216482A1

    公开(公告)日:2007-09-20

    申请号:US11374870

    申请日:2006-03-14

    Abstract: An amplifier, tuner, and method of amplification are provided. The amplifier has a pair of transistors. Each transistor has a control terminal and an output terminal disposed between the transistor and a power supply input. A first network is connected between each power supply input and output terminal. The first network contains a first resistor and a first switch connected in parallel with the first resistor. A second network is connected between the transistors. The second network contains a first and second combination. Each of the first and second combinations contains a second resistor and a second switch connected in parallel with the second resistor. The first and second combinations are connected by a third switch.

    Abstract translation: 提供放大器,调谐器和放大方法。 放大器有一对晶体管。 每个晶体管具有控制端子和设置在晶体管和电源输入端之间的输出端子。 第一个网络连接在每个电源输入和输出端子之间。 第一网络包含与第一电阻并联连接的第一电阻器和第一开关。 第二网络连接在晶体管之间。 第二网络包含第一和第二组合。 第一和第二组合中的每一个包括与第二电阻器并联连接的第二电阻器和第二开关。 第一和第二组合通过第三开关连接。

    Low noise reference oscillator with fast start-up
    27.
    发明申请
    Low noise reference oscillator with fast start-up 有权
    低噪声基准振荡器,启动速度快

    公开(公告)号:US20070096841A1

    公开(公告)日:2007-05-03

    申请号:US11261978

    申请日:2005-10-28

    CPC classification number: H03L3/00 H03B5/06 H03L5/00

    Abstract: A frequency source having a fast start-up time and low noise in steady state is presented. The frequency source includes an oscillator and a hybrid automatic gain control (AGC) loop that switches between an analog AGC loop at oscillator start up and a digital AGC loop at steady state operation. The analog AGC loop includes a peak detector connected to the oscillator and an error integrator integrating the difference between the peak detector output and a reference voltage. The digital AGC loop includes a comparator comparing the peak detector output and high/low reference voltages, an oscillator counter providing a timer signal, a digital-to-analog converter (DAC) supplied with a digital word, and a low pass filter between the DAC and the oscillator. The timer signal causes a multiplexer to select either the analog AGC loop or the digital AGC loop.

    Abstract translation: 提出了一种在稳态下具有快速起动时间和低噪声的频率源。 频率源包括振荡器和混合自动增益控制(AGC)环路,其在振荡器启动时在模拟AGC环路和稳态操作之间的数字AGC环路之间切换。 模拟AGC环路包括连接到振荡器的峰值检测器和积分峰值检测器输出和参考电压之间的差的误差积分器。 数字AGC环路包括比较峰值检测器输出和高/低参考电压的比较器,提供定时器信号的振荡器计数器,提供有数字字的数模转换器(DAC)和在数字字之间的低通滤波器 DAC和振荡器。 定时器信号使多路复用器选择模拟AGC环路或数字AGC环路。

    Transalkylation of benzene in a moving bed
    28.
    发明授权
    Transalkylation of benzene in a moving bed 失效
    苯在移动床中的烷基转移

    公开(公告)号:US5087783A

    公开(公告)日:1992-02-11

    申请号:US610950

    申请日:1990-11-09

    CPC classification number: C07C2/66 C07C6/126 C07C2529/06 Y02P20/584

    Abstract: An improved process for the alkylation of benzene in the presence of an alkylation catalyst. The catalyst bed may be caused to move in a direction countercurrent to the movement of the benzene and olefin, or a portion of the catalyst bed is periodically removed and replaced. A regeneration step, whereby the catalyst is heated in a controlled oxygen atmosphere in order to reactivate the catalyst, is also described.

    Abstract translation: 在烷基化催化剂存在下烷基化苯的改进方法。 可以使催化剂床沿与苯和烯烃的运动逆流的方向移动,或者催化剂床的一部分被周期性地去除和更换。 还描述了再生步骤,其中催化剂在受控氧气氛中加热以使催化剂再活化。

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