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    • 23. 发明授权
    • Low voltage CMOS amplifier
    • 低电压CMOS放大器
    • US4264874A
    • 1981-04-28
    • US872281
    • 1978-01-25
    • William R. Young
    • William R. Young
    • H03F1/30H03F3/16
    • H03F1/301
    • A CMOS amplifier having a pair of CMOS load and amplifying devices connected in series, two parallel pairs of CMOS devices with interconnected gates to form current mirrors and connected to the gate of the load MOS device to compensate the gain for variations in power supply voltage, temperature and transistor parameters, a feedback MOS device having its source-drain path connected between the junction of the load and amplifying MOS and the gate of the amplifying MOS to provide nonlinear, negative feedback, and a resistor connected in parallel with the feedback MOS device to establish an initial self-biasing voltage level for the amplifying MOS below the threshold voltage of the feedback MOS.
    • 具有串联连接的一对CMOS负载和放大装置的CMOS放大器,具有互连栅极的两个并联的CMOS器件对以形成电流镜并连接到负载MOS器件的栅极,以补偿电源电压变化的增益, 温度和晶体管参数,其源极 - 漏极路径连接在负载和放大MOS的结点与放大MOS的栅极之间以提供非线性负反馈的反馈MOS器件和与反馈MOS器件并联连接的电阻器 以建立低于反馈MOS的阈值电压的放大MOS的初始自偏置电压电平。
    • 24. 发明授权
    • Method for improving a property of an alloy
    • 提高合金性能的方法
    • US4249963A
    • 1981-02-10
    • US59796
    • 1979-07-23
    • William R. Young
    • William R. Young
    • C22C1/00B23K35/30C21D3/00C22C3/00C23F1/12C21D1/74C22F1/02
    • B23K35/38B23K35/30C21D3/00C23F1/12
    • A property, such as ductility, mechanical strength and increased remelt temperature, of an alloy, for example one which includes an element such as Si or B, or both, is improved by depletion of such an element through the alloy surface. This is accomplished by exposing the alloy surface, one common form of which is a brazing alloy, to gaseous ions such as fluoride ions, while heating the alloy at a temperature which is not detrimental to the alloy or members associated with the alloy. Heating is conducted for a time sufficient for such elements, for example those selected from Si and B, included as a melting point depressant, to diffuse to the surface of the alloy and to react with the gaseous ions to form a gaseous compound of the element. Such gaseous compound then separates from the surface, thereby depleting the alloy of the element and improving at least one property.
    • 通过合金表面的这种元素的消耗,可以改善合金例如包括诸如Si或B的元素或两者的合金的延展性,机械强度和增加的熔融温度的性质。 这是通过将合金表面(其一种常见形式是钎焊合金)暴露于诸如氟离子的气态离子而实现的,同时在对合金或与合金相关的构件不利的温度下加热合金。 进行加热进行足够的时间,这些元素例如包括作为熔点降低剂的Si和B元素扩散到合金表面并与气态离子反应以形成元素的气态化合物 。 这样的气体化合物然后与表面分离,从而消耗元素的合金并改善至少一种性质。
    • 27. 发明授权
    • Driver circuit having load-independent slew rate
    • 驱动电路具有负载独立的转换速率
    • US06172541B2
    • 2001-01-09
    • US09152420
    • 1998-09-14
    • William R. YoungStuart W. Pullen
    • William R. YoungStuart W. Pullen
    • H03K512
    • H04L25/028H03K19/00361H03K19/00384
    • Load-monitoring feedback is used to maintain the slew rate of a line driver circuit at a prescribed rate that is independent of the effective load of the line being driven. This load-monitoring feedback control makes it possible to drive the line with an amplified output signal that faithfully tracks the input signal and conforms with prescribed slew rate and rise/fall time specifications, irrespective of characteristics of the signal line, which may vary over a specified range of component values. In a first embodiment, slew rate control is effected by increasing or decreasing the amount of charge on a reference capacitor and thereby the drive current to an output driver FET, in accordance with the change in state of the output of an output terminal-monitoring voltage threshold comparator relative to termination of a prescribed (one-shot established) time window. In a second embodiment, slew rate control is effected by directly determining the length of time required for the output terminal to transition between first and second states, and adjusting the operation of the output driver FET based on whether the total time measurement is equal to, greater than or less than the slew rate window.
    • 负载监控反馈用于将线路驱动电路的转换速率保持在与驱动线路的有效负载无关的规定速率。 该负载监测反馈控制使得可以用放大的输出信号来驱动线路,该放大的输出信号忠实地跟踪输入信号并且符合规定的转换速率和上升/下降时间规范,而与信号线的特性无关,其可以在一个 指定范围的组件值。 在第一实施例中,通过根据输出端子监视电压的输出状态的变化来增加或减少参考电容器上的电荷量,从而提供到输出驱动器FET的驱动电流来实现转换速率控制 阈值比较器相对于规定(一次建立)时间窗口的终止。 在第二实施例中,通过直接确定输出端子在第一和第二状态之间转变所需的时间长度以及基于总时间测量是否等于调整输出驱动器FET的操作来实现压摆率控制, 大于或小于压摆率窗口。