Current supply system for terminal devices
    1.
    发明授权
    Current supply system for terminal devices 失效
    终端设备供电系统

    公开(公告)号:US4035586A

    公开(公告)日:1977-07-12

    申请号:US660780

    申请日:1976-02-24

    IPC分类号: H04M19/00 H04Q1/28

    CPC分类号: H04M19/00 H04M19/001

    摘要: A current supply system for terminal devices in which the line circuits are divided into groups in accordance with the line impedance thereof between an exchange or switching network and respective terminal devices or telephone sets, and a different voltage is applied to respective groups of line circuits which corresponds to the current matching the line impedance for the respective groups of line circuits.

    摘要翻译: 一种用于终端设备的电流供应系统,其中根据交换机或交换网络与相应的终端设备或电话机之间的线路阻抗将线路电路分成几组,并且将不同的电压施加到相应的线路电路组 对应于相应的线路电路组的线路阻抗匹配的电流。