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140 条记录 (耗时 0.014 秒)

    Biplanar tapered line frequency selective limiter
    1.
    发明授权
    Biplanar tapered line frequency selective limiter 有权

    公开(公告)号：US10707547B2

    公开(公告)日：2020-07-07

    申请号：US16018768

    申请日：2018-06-26

    申请人： Raytheon Company

    发明人： Matthew A. Morton ,  Gerhard Sollner ,  Jason C. Soric

    IPC分类号： H01P1/23 ,  H01P1/215 ,  H01P1/218 ,  H01P1/22 ,  H01P3/08 ,  H01P11/00 ,  H03G11/00 ,  H03G11/06

    摘要： A frequency selective limiter (FSL) is provided having a transmission line structure with a tapered width. The FSL includes a magnetic material having first and second opposing surfaces. A first conductor is disposed on the first surface of the magnetic material, where a width of the first conductor decreases from a first end of the FSL to a second end of the FSL along a length of the FSL. Two second conductors are disposed on the second surface of the magnetic material, where a width of a gap between the two second conductors decreases from the first end of the FSL to the second end of the FSL along a length of the FSL. The first conductor and two second conductors form a biplanar waveguide transmission line.

    Control circuit
    2.
    发明授权
    Control circuit 失效
    控制电路

    公开(公告)号：US5793874A

    公开(公告)日：1998-08-11

    申请号：US431086

    申请日：1995-04-28

    申请人： Arthur J. Camire

    发明人： Arthur J. Camire

    IPC分类号： H03G3/32 ,  H03G11/06 ,  H03G3/20

    CPC分类号： H03G3/32

    摘要： A volume control device is inserted in the circuit between the output of a sound system amplifier and a speaker. The volume control device measures ambient noise in the music environment and adjusts the power transferred to the speaker, such that the output volume of the speaker increases and decreases with changes in the ambient noise. A variable throughput current device, such as a thermistor or a transistor, is connected in the speaker circuit to control a power transfer to the speaker. A comparator compares the output of an ambient noise detector with the signal applied to the speaker and the variable throughput current device is adjusted in accordance with the compared signals. A level detect circuit serves to maintain the speaker volume at a preset level when the amplifier output drops below a predefined signal level. The speaker may be provided with a sensing coil generating an output signal representative of the level of ambient noise in the vicinity of the speaker.

    摘要翻译： 音量控制装置插入在声音系统放大器的输出端和扬声器之间的电路中。 音量控制装置测量音乐环境中的环境噪声并调节传递到扬声器的功率，使扬声器的输出音量随环境噪声的变化而增加和减少。 在扬声器电路中连接可变吞吐量电流装置，例如热敏电阻或晶体管，以控制到扬声器的功率传递。 比较器将环境噪声检测器的输出与施加到扬声器的信号进行比较，并且可变吞吐量电流装置根据所比较的信号进行调整。 当放大器输出下降到低于预定信号电平时，电平检测电路用于将扬声器音量保持在预设电平。 扬声器可以设置有感测线圈，其产生表示扬声器附近的环境噪声水平的输出信号。

    Level detector
    3.
    发明授权
    Level detector 失效
    液位探测器

    公开(公告)号：US4621206A

    公开(公告)日：1986-11-04

    申请号：US610669

    申请日：1984-05-16

    申请人： Masaru Hashimoto

    发明人： Masaru Hashimoto

    IPC分类号： G01R19/165 ,  H03G3/20 ,  H03G11/06 ,  H03K5/08 ,  G01R19/22

    CPC分类号： H03G3/3052 ,  H03G11/06

    摘要： Disclosed is a level detector in use with a differential amplifier circuit in an amplitude-limiting amplifying system for angle-modulation signal amplification. The differential amplifier circuit is made up of differentially paired transistors. The level detector contains first and second transistors which form a differential pair. In the first transistor, the base is connected to an interjunction of the emitters of the differentially paired transistors. A second transistor is connected at the emitter to the emitter of the first transistor. A current source is connected to the emitter interjunction of the first and second transistors. A bias circuit applies a predetermined bias potential to the base of the second transistor. An output signal containing the detected level information of the input signal is derived from the collector of the first or second transistor.

    摘要翻译： 公开了一种与用于角度调制信号放大的限幅放大系统中的差分放大器电路一起使用的电平检测器。 差分放大器电路由差分配对的晶体管组成。 电平检测器包含形成差分对的第一和第二晶体管。 在第一晶体管中，基极连接到差分配对晶体管的发射极的交汇点。 第二晶体管在发射极处连接到第一晶体管的发射极。 电流源连接到第一和第二晶体管的发射极结。 偏置电路将预定的偏置电位施加到第二晶体管的基极。 包含检测到的输入信号的电平信息的输出信号从第一或第二晶体管的集电极导出。

    Signal processing circuit with voltage clamped input
    4.
    发明授权
    Signal processing circuit with voltage clamped input 失效
    具有电压钳位输入的信号处理电路

    公开(公告)号：US4590394A

    公开(公告)日：1986-05-20

    申请号：US589269

    申请日：1984-03-13

    申请人： Gary L. Pace

    发明人： Gary L. Pace

    IPC分类号： H03G11/04 ,  H03G11/06 ,  H03K5/08

    CPC分类号： H03G11/06 ,  H03G11/04

    摘要： A signal processing circuit with enhanced response time includes a data limiter circuit having an input and an input capacitor having one terminal coupled to the input. A first selectively actuable voltage clamping circuit responds to a first comparing circuit and is coupled to the input for preventing the voltage at the input from exceeding a predetermined upper voltage. A second selectively actuable voltage clamping circuit is responsive to a second comparing circuit and is coupled to the input for preventing the voltage at the input from decreasing below a predetermined lower voltage.

    摘要翻译： 具有增强的响应时间的信号处理电路包括具有输入的数据限制器电路和具有耦合到输入的一个端子的输入电容器。 第一可选择性致动的钳位电路响应于第一比较电路并耦合到输入端，用于防止输入端的电压超过预定的上限电压。 第二可选择性致动的钳位电路响应于第二比较电路并耦合到输入端，用于防止输入端的电压降低到低于预定的较低电压。

    Multistage cascade/cascode limiting IF amplifier and meter circuit
    5.
    发明授权
    Multistage cascade/cascode limiting IF amplifier and meter circuit 失效
    多级串联/共源共栅限幅IF放大器和仪表电路

    公开(公告)号：US4429416A

    公开(公告)日：1984-01-31

    申请号：US362363

    申请日：1982-03-26

    申请人： Ronald W. Page

    发明人： Ronald W. Page

    IPC分类号： G01R15/00 ,  G01R19/04 ,  H03G7/00 ,  H03G11/06 ,  H04B1/26 ,  H03F3/45

    CPC分类号： H03G7/001 ,  G01R15/005 ,  G01R19/04 ,  H03G11/06

    摘要： A plurality of differential amplifier stages in cascaded in a directly coupled configuration to provide substantial signal gain. The first few stages are cascode coupled to a plural input differential signal combiner which has a single differential output that feeds a full wave differential peak detector. The peak detector therefore has an output that rises as a log function of the signal input. This signal-related voltage is then fed to a differential dc amplifier which in turn drives a meter that indicates the log of the input signal strength. The amplifier cascade is stabilized by a dc feedback loop.

    摘要翻译： 多个差分放大器级级以直接耦合的配置级联以提供实质的信号增益。 前几级是共源共栅耦合到多输入差分信号组合器，其具有馈送全波差分峰值检测器的单个差分输出。 因此，峰值检测器具有作为信号输入的对数函数上升的输出。 然后将该信号相关电压馈送到差分dc放大器，该差动直流放大器又驱动指示输入信号强度对数的仪表。 放大器级联由直流反馈环路稳定。

    Stable low current amplifier
    6.
    发明授权
    Stable low current amplifier 失效
    稳定的低电流放大器

    公开(公告)号：US3733558A

    公开(公告)日：1973-05-15

    申请号：US3733558D

    申请日：1971-05-20

    申请人： MOTOROLA INC

    发明人： CRAMER J ,  NICKERSON D

    IPC分类号： H03F1/34 ,  H03G11/00 ,  H03G11/06 ,  H03F3/18

    CPC分类号： H03G11/00 ,  H03F1/34 ,  H03G11/06

    摘要： Limiter amplifier adapted to be constructed in integrated circuit form and including a plurality of direct current coupled transistor stages capable of limiting operation from a one-cell battery. The amplifier has sufficient gain to limit on noise so that a rectangular wave output signal is developed at the output. An integrating network responsive to the output signal provides a bias voltage which is coupled through complementary emitter followers, having current sharing therebetween, to the input circuit to control the bias applied to the semiconductor devices so that the duty cycle of the rectangular wave output signal is regulated to be preferably a 50 percent duty cycle.

    摘要翻译： 适用于以集成电路形式构成的限幅放大器，并且包括能够限制来自单节电池的操作的多个直流耦合晶体管级。 放大器具有足够的增益来限制噪声，从而在输出端产生矩形波输出信号。 响应于输出信号的积分网络提供偏置电压，该偏置电压通过互补发射极跟随器（它们之间具有电流共享）耦合到输入电路，以控制施加到半导体器件的偏置，使得矩形波输出信号的占空比为 优选为50％的占空比。