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    Automatic level control device for use in telecommunication systems
    2.
    发明授权
    Automatic level control device for use in telecommunication systems 失效
    用于电信系统的自动电平控制装置

    公开(公告)号：US3737774A

    公开(公告)日：1973-06-05

    申请号：US3737774D

    申请日：1970-10-06

    申请人： PHILIPS NV

    发明人： VERHAGEN J

    IPC分类号： H04B3/10 ,  H04B3/12 ,  H04B3/04

    CPC分类号： H04B3/10 ,  H04B3/12

    摘要： Automatic level control device for use in telecommunication systems, said device comprising a level control member formed by a current-dependent impedance varying with the level control signal, said device comprising, in order to enable a very accurate adjustment of the level control signal, furthermore a variable current-independent impedance controlled by the level control signal, which together with the said current-dependent impedance forms part of a Wheatstone bridge formed by two parallel impedance circuits, of a variable direct-current source connected to said bridge and of a comparison device included in the galvanometer branch of the bridge, the output signal of said comparison device controlling the direct-current source.

    摘要翻译： 用于电信系统的自动电平控制装置，所述装置包括由与电平控制信号变化的电流相关阻抗形成的电平控制部件，所述装置包括，以便能够非常准确地调整电平控制信号 由电平控制信号控制的可变电流独立阻抗，其与所述电流相关阻抗一起形成由两个并联阻抗电路形成的惠斯登电桥的一部分，连接到所述桥的可变直流电源和比较 设备包括在桥的检流计分支中，所述比较装置的输出信号控制直流电源。

    Arrangement for suppressing overshoot caused by level regulation in carrier-frequency systems
    8.
    发明授权
    Arrangement for suppressing overshoot caused by level regulation in carrier-frequency systems 失效
    载波频率系统中水平调节造成的海外压力安排

    公开(公告)号：US3804995A

    公开(公告)日：1974-04-16

    申请号：US29805272

    申请日：1972-10-16

    申请人： INT STANDARD ELECTRIC CORP

    发明人： BECKR L

    IPC分类号： H04B3/12 ,  H04M7/10

    CPC分类号： H04B3/12

    摘要： This relates to level regulation in a carrier frequency system with a plurality of repeaters in tandem. More particularly, the level regulator at the repeaters suppress overshoot (excessive regulation) by one or more regulators. The level regulator is disposed in each repeater of a pilot-controlled repeater chain. Suppression of overshoot is obtained by a gradient discriminator in each repeater which detects the rate of change of the pilot level deviation from a nominal level. If the rate of change exceeds a predetermined value, the level regulator is blocked.

    摘要翻译： 这涉及具有串联的多个中继器的载波频率系统中的电平调节。 更具体地，中继器处的电平调节器抑制一个或多个调节器的过冲（过度调节）。 电平调节器设置在先导控制中继器链的每个中继器中。 通过每个中继器中的梯度鉴别器来获得超调的抑制，其检测导频电平偏离标称电平的变化率。 如果变化率超过预定值，则电平调节器被阻塞。