Low-distortion high-frequency amplifier

    公开(公告)号:US6057731A

    公开(公告)日:2000-05-02

    申请号:US158838

    申请日:1998-09-23

    CPC分类号: H03F3/195 H03F3/211 H03F3/34

    摘要: The invention is an amplifier configuration which provides signal gain at very low levels of distortion. The inventive amplifier configuration consists of two amplifiers whose outputs are added to give the total amplified signal. A first amplifier functions in the usual way, amplifying a signal from a voltage source and having a controllable feedback gain. A second amplifier is also fed by the voltage source but applies a feedback gain to the total amplified signal rather than to its own output signal. By selecting the feedback gains to be substantially identical, portions of voltage waveforms that have been removed or altered due to clipping or other forms of distortion are restored by the second amplifier. The invention is particularly useful when amplifier gain is low, e.g., at high frequencies. Suitable implementations are in the voltage domain, using operational amplifiers, or in the current domain, using, for example, voltage-controlled current sources.

    Low-distortion high-frequency amplifier
    2.
    发明授权
    Low-distortion high-frequency amplifier 失效
    低失真高频放大器

    公开(公告)号:US6137359A

    公开(公告)日:2000-10-24

    申请号:US457000

    申请日:1999-12-07

    CPC分类号: H03F3/195 H03F3/211 H03F3/34

    摘要: The invention is an amplifier configuration which provides signal gain at very low levels of distortion. The inventive amplifier configuration consists of two amplifiers whose outputs are added to give the total amplified signal. A first amplifier functions in the usual way, amplifying a signal from a voltage source and having a controllable feedback gain. A second amplifier is also fed by the voltage source but applies a feedback gain to the total amplified signal rather than to its own output signal. By selecting the feedback gains to be substantially identical, portions of voltage waveforms that have been removed or altered due to clipping or other forms of distortion are restored by the second amplifier. The invention is particularly useful when amplifier gain is low, e.g., at high frequencies. Suitable implementations are in the voltage domain, using operational amplifiers, or in the current domain, using, for example, voltage-controlled current sources.

    摘要翻译: 本发明是以非常低的失真水平提供信号增益的放大器配置。 本发明的放大器配置由两个放大器组成,其放大器的输出被加到总放大信号上。 第一放大器以通常的方式起作用,放大来自电压源的信号并具有可控的反馈增益。 第二放大器也由电压源馈送,但是对总放大信号而不是其自己的输出信号施加反馈增益。 通过选择基本相同的反馈增益,由第二放大器恢复由于限幅或其他形式的失真而被去除或改变的电压波形的部分。 当放大器增益低,例如在高频时,本发明特别有用。 合适的实施方式是使用例如电压控制电流源的电压域,使用运算放大器,或在当前域中。

    Current pulse-injected, phase-locked oscillator
    3.
    发明授权
    Current pulse-injected, phase-locked oscillator 失效
    电流脉冲注入,锁相振荡器

    公开(公告)号:US4320360A

    公开(公告)日:1982-03-16

    申请号:US115638

    申请日:1980-01-28

    申请人: Robert M. Thomas

    发明人: Robert M. Thomas

    IPC分类号: H03L7/24

    CPC分类号: H03L7/24

    摘要: The phase of a voltage controlled oscillator (VCO) can be controlled and changed by a series of pulses applied through an isolating element such as a capacitor. A small amount of current injected into the reactive element distorts the waveform of the VCO during the period of injection. Depending on the power of the pulse of injected current, a corresponding phase shift in the output of the VCO will result during the period of injection. The pulses are applied at a frequency equivalent to the desired frequency. Assuming the waveform of the VCO to be sinusoidal or otherwise symmetrical, the injected current pulses result in one point on the waveform where the distortion will be symmetrical and stable. The injection of repeated pulses results in this stable point eventually occurring symmetrically about the peak of the VCO waveform thereby locking the phase of the VCO to correspond to the frequency of the injected pulses.

    摘要翻译: 压控振荡器(VCO)的相位可以通过诸如电容器的隔离元件施加的一系列脉冲来控制和改变。 注入电抗元件的少量电流在注入期间使VCO的波形发生变形。 取决于注入电流脉冲的功率,在注入期间会产生VCO的输出中相应的相移。 以等于所需频率的频率施加脉冲。 假设VCO的波形为正弦或对称,则注入的电流脉冲会导致波形上的一个点,其中失真将对称且稳定。 重复脉冲的注入导致该稳定点最终关于VCO波形的峰值对称地发生,从而锁定VCO的相位以对应于注入的脉冲的频率。

    Control point driver circuit
    4.
    发明授权
    Control point driver circuit 失效
    控制点驱动电路

    公开(公告)号:US4085294A

    公开(公告)日:1978-04-18

    申请号:US711019

    申请日:1976-08-02

    IPC分类号: H04Q3/00 H04M3/00

    CPC分类号: H04Q3/00

    摘要: A control point driver circuit for use in a telephone exchange for energizing and deenergizing a control element such as a control relay in response to set and reset input pulses. The control point driver circuit comprises a transformer having a centertapped primary forming set, reset, and common inputs for receiving the set and reset input pulses and a secondary coupled to a constant control voltage. The control point driver circuit also includes a comparator having a first input coupled to the transformer secondary, an output coupled to the control relay to be energized and de-energized and a second input coupled to the comparator output for receiving first and second reference voltages which are related in magnitude to the constant control voltage to maintain the comparator in the set state or reset state indefinitely until a reset or set input pulse is received. A received input pulse causes an induced voltage within the transformer secondary which augments the control voltage to change the relation in magnitude between the reference voltages and the control voltage to cause the comparator to change states in response to the received set and reset input pulses. When the comparator is in the set state, the control relay is energized and when the comparator is in the reset state, the control relay is de-energized.

    摘要翻译: 一种用于电话交换机中的控制点驱动器电路,用于响应于设置和复位输入脉冲激励和断电控制元件(例如控制继电器)。 控制点驱动电路包括一个变压器,它具有一个初始成形设置,复位和用于接收设定和复位输入脉冲的公共输入,以及耦合到一个恒定控制电压的一个二极管。 所述控制点驱动电路还包括具有耦合到所述变压器次级的第一输入的比较器,耦合到所述控制继电器以被通电和断电的输出以及耦合到所述比较器输出的第二输入,用于接收第一和第二参考电压, 与恒定控制电压相关,以将比较器保持在设定状态或无限期复位状态,直到接收到复位或置位输入脉冲为止。 接收到的输入脉冲导致变压器次级中的感应电压,其增加控制电压以改变参考电压和控制电压之间的幅度关系,以使得比较器响应于接收到的设置和复位输入脉冲改变状态。 当比较器处于设定状态时,控制继电器通电,当比较器处于复位状态时,控制继电器断电。

    Steering column assembly
    6.
    发明授权
    Steering column assembly 失效
    转向柱总成

    公开(公告)号:US5498032A

    公开(公告)日:1996-03-12

    申请号:US245277

    申请日:1994-05-18

    申请人: Robert M. Thomas

    发明人: Robert M. Thomas

    IPC分类号: B62D1/19 B62D1/18

    CPC分类号: B62D1/195

    摘要: A steering column assembly for a collapsible energy absorbing vehicle steering column includes a lower support bracket for pivotally attaching a lower portion of the steering column to vehicle support structure and an upper mounting mechanism for attaching an upper portion of the steering column to vehicle support structure, the upper mounting mechanism having a structure for guiding movement of the steering column along an arcuate path during a collision.

    摘要翻译: 用于可折叠能量吸收车辆转向柱的转向柱组件包括用于将转向柱的下部可枢转地附接到车辆支撑结构的下支撑支架和用于将转向柱的上部附接到车辆支撑结构的上安装机构, 上部安装机构具有用于在碰撞期间沿着弧形路径引导转向柱的运动的结构。

    Gearshift knob attaching arrangement
    7.
    发明授权
    Gearshift knob attaching arrangement 失效
    换档旋钮连接装置

    公开(公告)号:US5284400A

    公开(公告)日:1994-02-08

    申请号:US986416

    申请日:1992-12-07

    申请人: Robert M. Thomas

    发明人: Robert M. Thomas

    IPC分类号: B60K20/02 G05G1/06 G05G9/12

    摘要: A fastening arrangement for attaching a handgrip knob assembly to a vehicle gearshift lever rod. The knob has a through cavity comprising an upper cavity portion, an intermediate cavity portion supporting a metal insert, and a lower upwardly tapered cavity portion. The insert upper surface defining a bottom wall clamping surface of the upper cavity portion bottom wall. An internally threaded insert through bore is divided from a lower counterbored portion by an internal stop shoulder. The shift lever rod has an upper threaded stem connected by a cylindrical shank portion to an upwardly tapered rod section while the stem portion terminates in a frustoconical pilot end. A rod external stop shoulder divides the stem and shank sections. A spring steel drive washer, having a central aperture intermeshed with an upper crown portion of a locknut, is initially press-fitted in the upper cavity until its outer edge frictionally engages a serrated portion of the upper cavity. Assembly begins with the installer releasing the knob assembly above the rod stem such that the knob's lead-in cavity slidably receives the rod stem in a gravity induced torque ready manner. Initial torquing of the locknut results in self-threading of the stem through the insert and into the locknut bore causing the stop shoulders to clamp in a first anti-rotational lock. Continued torquing releases the frictionally retained drive washer from the serrated portion thereby clamping the locknut undersurface against the cavity bottom wall providing a second anti-rotational lock.

    摘要翻译: 用于将手柄组合件附接到车辆变速杆的紧固装置。 旋钮具有包括上空腔部分,支撑金属插入件的中间腔部分和下向上渐缩的空腔部分的通孔。 所述插入件上表面限定所述上部空腔部底壁的底壁夹紧表面。 内螺纹插入孔通过内部止动肩部与下沉孔部分分开。 变速杆杆具有上螺纹杆,其通过圆柱形柄部分连接到向上锥形的杆部分,而杆部分终止于截头圆锥形导向端。 杆外部止动肩分开柄和柄部分。 具有与锁紧螺母的上冠部相互啮合的中心孔的弹簧钢驱动垫圈首先被压配合在上腔中,直到其外边缘摩擦地接合上腔的锯齿状部分。 组装开始于安装者释放杆杆上方的旋钮组件,使得旋钮的引入腔以重力感应的扭矩准备方式可滑动地容纳杆杆。 锁紧螺母的初始扭转导致杆通过插入件自锁,并进入锁紧螺母孔,导致止动肩部夹紧第一防旋转锁。 继续扭矩从锯齿部分释放摩擦保持的驱动垫圈,从而将锁紧螺母下表面压靠在空腔底壁上,从而提供第二防旋转锁。

    Lost motion link
    8.
    发明授权
    Lost motion link 失效
    丢失运动链接

    公开(公告)号:US4790206A

    公开(公告)日:1988-12-13

    申请号:US129857

    申请日:1987-12-04

    申请人: Robert M. Thomas

    发明人: Robert M. Thomas

    IPC分类号: F16C1/14 F16C1/10

    摘要: A lost motion link for allowing selective control of the throttle valve of a vehicle engine between accelerator pedal linkage and speed control system linkage comprises:an elongated body having an enclosed longitudinal passage dimensioned to receive an enlarged cable terminus, an integral flange for pivotally mounting the body to the throttle valve actuator, and a restricted portion of the longitudinal passage entraining the terminus in the body.

    摘要翻译: 用于允许在加速器踏板联动和速度控制系统联动之间选择性地控制车辆发动机的节气门的空动连杆包括:细长主体,其具有被设计成容纳放大的电缆终端的封闭的纵向通道,用于枢转地安装 主体连接到节流阀致动器,并且纵向通道的限制部分夹带在主体中。

    VIRTUAL VEHICLE SYSTEM
    10.
    发明申请
    VIRTUAL VEHICLE SYSTEM 有权
    虚拟车辆系统

    公开(公告)号:US20090063172A1

    公开(公告)日:2009-03-05

    申请号:US11847550

    申请日:2007-08-30

    IPC分类号: G06Q10/00

    CPC分类号: G06Q10/06 G06Q30/014

    摘要: A system for providing vehicle part information includes a build configuration module that provides delta information that indicates a change in build configurations for vehicles. The build configuration indicates vehicle parts that were used at specific manufacturing plants on the vehicles during a time period. A build data module includes vehicle identification information that indicates predetermined build parameters for the vehicles. A display control module includes a database that combines the delta information and the vehicle identification information in a matrix and that stores the matrix.

    摘要翻译: 用于提供车辆部件信息的系统包括构建配置模块,其提供指示车辆的构建配置的改变的增量信息。 构建配置表示在一段时间内在车辆上的特定制造工厂使用的车辆部件。 构建数据模块包括指示车辆的预定构建参数的车辆识别信息。 显示控制模块包括将Δ信息和车辆识别信息组合成矩阵并存储矩阵的数据库。