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195 条记录 (耗时 0.018 秒)

    Monostable multivibrator
    51.
    发明授权
    Monostable multivibrator 失效
    单稳态多谐振荡器

    公开(公告)号：US4293781A

    公开(公告)日：1981-10-06

    申请号：US967636

    申请日：1978-12-08

    申请人： Tsuneo Yamada ,  Yukihiko Miyamoto

    发明人： Tsuneo Yamada ,  Yukihiko Miyamoto

    IPC分类号： H03D3/00 ,  H03K3/02 ,  H03K3/023 ,  H03K3/0232 ,  H03K3/033 ,  H03K3/284 ,  H03K5/08 ,  H03K17/16

    CPC分类号： H03K3/02 ,  H03D3/00 ,  H03K3/023 ,  H03K3/033 ,  H03K3/284

    摘要： A monostable multivibrator including a gate circuit, a driver circuit responsive to the gate circuit, a differentiating circuit responsive to the driver circuit and a voltage comparison circuit responsive to the differentiating circuit where the gate circuit has a trigger pulse applied to a first input thereof and the output of the voltage comparison circuit is fed back to a second input thereof, and where the gate circuit, the driver circuit and the voltage comparison circuit are each non-saturating and include a constant current source and where clipping circuitry clips the output of the driver circuit to lessen the effect of noise produced by the constant current sources on the output of the multivibrator. Further clipping circuitry may be employed to prevent saturation of the gate circuit. A common voltage source may provide bias voltages for at least the above clipping circuits and a threshold voltage for the voltage comparison circuit. In addition to a bias power supply for the gate circuit, the driver circuit, and the voltage comparison circuit, a further supply may supply a reference voltage for clipping the output of the gate circuit and for determining the asymptotic characteristic of the output from the differentiating circuit.

    摘要翻译： 一种单稳态多谐振荡器，包括门电路，响应于门电路的驱动电路，响应于驱动电路的微分电路和响应于微分电路的电压比较电路，其中门电路具有施加到其第一输入的触发脉冲， 电压比较电路的输出被反馈到其第二输入端，并且其中门电路，驱动电路和电压比较电路各自不饱和并且包括恒流源，并且其中限幅电路钳位 驱动电路，以减少由恒流源产生的噪声对多谐振荡器输出的影响。 可以采用进一步的限幅电路来防止门电路的饱和。 公共电压源可以为至少上述限幅电路提供偏置电压，并为电压比较电路提供阈值电压。 除了栅极电路，驱动电路和电压比较电路的偏置电源之外，另外的电源可以提供用于限幅门电路的输出的参考电压，并且用于确定来自差分的输出的渐近特性 电路。

    Frequency discriminator apparatus
    53.
    发明授权
    Frequency discriminator apparatus 失效
    鉴频装置

    公开(公告)号：US4127819A

    公开(公告)日：1978-11-28

    申请号：US631708

    申请日：1975-11-13

    申请人： William J. Keane

    发明人： William J. Keane

    IPC分类号： H03D3/00 ,  H03D9/04 ,  H04B1/16 ,  H03B3/08

    CPC分类号： H03D3/00 ,  H03D9/04

    摘要： A frequency discriminator having a bandwidth variable from a relatively narrow range to a very wide range in which the center frequency is simultaneously tunable over an extremely wide frequency range. The discriminator is insensitive to amplitude variations of the input signal and is capable of demodulating low level signals. The frequency discriminator is particularly useful for microwave frequency applications wherein the basic discriminator element is a ferrimagnetic resonator. The frequency discriminator forms a portion of several preferred embodiments including devices for the frequency control of signal sources, frequency measurement of signal sources, demodulation of frequency modulated signals and frequency tracking control for other ferrimagnetic devices.

    摘要翻译： 频率鉴别器具有从相对狭窄的范围变化到非常宽的范围的带宽，其中中心频率在极宽的频率范围内同时可调。 鉴频器对输入信号的幅度变化不敏感，并且能够解调低电平信号。 鉴频器对于微波频率应用特别有用，其中基本鉴频器元件是亚铁磁共振器。 鉴频器形成几个优选实施例的一部分，包括用于信号源的频率控制，信号源的频率测量，频率调制信号的解调和其他亚铁磁装置的频率跟踪控制的装置。

    Phase demodulator
    54.
    发明授权
    Phase demodulator 失效
    相位解调器

    公开(公告)号：US3949314A

    公开(公告)日：1976-04-06

    申请号：US519028

    申请日：1974-10-29

    申请人： Yukihiko Machida

    发明人： Yukihiko Machida

    IPC分类号： H03D3/02 ,  H03D3/00 ,  H03D3/18 ,  H03D3/24 ,  H03D13/00 ,  H03K9/04

    CPC分类号： H03D3/242 ,  H03D3/00 ,  H03D3/18

    摘要： A reference carrier signal is combined with a phase modulated signal of the same basic frequency to generate an output signal the amplitude of which varies in accordance with the phase difference between the phase modulated signal and the reference carrier. The permissible modulation angle is increased by vectorally adding the phase modulated signal with a reference signal having a phase different from the comparison reference carrier. The vector sum signal is amplitude-limited so that the signal produced by the comparison will only be responsive to phase angle and not amplitude.

    摘要翻译： 参考载波信号与相同基本频率的相位调制信号组合以产生其幅度根据相位调制信号和参考载波之间的相位差而变化的输出信号。 通过使用具有与比较参考载波不同的相位的参考信号对相位调制信号进行向量相加来增加允许的调制角度。 矢量和信号受到幅度限制，使得由比较产生的信号将仅响应于相位角而不是幅度。

    Circuit arrangement for limiting amplitude modulation in a frequency modulated signal
    56.
    发明授权
    Circuit arrangement for limiting amplitude modulation in a frequency modulated signal 失效
    用于限制频率调制信号中振幅调制的电路布置

    公开(公告)号：US3654488A

    公开(公告)日：1972-04-04

    申请号：US3654488D

    申请日：1970-11-18

    申请人： GRUNDIG E M V ELECKTRO MECHANI

    发明人： TRAUB KARL ,  BENECKE GUNTHER

    IPC分类号： H03D3/00 ,  H03G11/06 ,  H03K5/08 ,  H04B1/10

    CPC分类号： H03D3/00 ,  H03D3/002 ,  H03G11/06

    摘要： A first transistor stage has a tuned output circuit. A coil coupled to the tuned output circuit has, in parallel with it, a series circuit of a resistance and a pair of diodes connected in parallel but with opposite polarity. Terminal of the resistance not connected to the pair of diodes may be connected to the top of the coupling coil via a resistance and is connected to the base of the subsequent transistor stage.

    摘要翻译： 第一晶体管级具有调谐输出电路。 耦合到调谐输出电路的线圈与其并联具有并联连接但具有相反极性的电阻和一对二极管的串联电路。 未连接到一对二极管的电阻的端子可以经由电阻连接到耦合线圈的顶部，并且连接到后续晶体管级的基极。