公开(公告)号：EP0778683B1

公开(公告)日：2004-02-18

申请号：EP96308746.5

申请日：1996-12-03

申请人： FUJITSU LIMITED

发明人： Sudo, Yozo ,  Yamaguchi, Yuji

IPC分类号： H04B15/02 ,  H04M1/74

CPC分类号： H04B15/02

公开(公告)号：EP0778683A3

公开(公告)日：1999-08-18

申请号：EP96308746.5

申请日：1996-12-03

申请人： FUJITSU LIMITED

发明人： Sudo, Yozo ,  Yamaguchi, Yuji

IPC分类号： H04B15/02

CPC分类号： H04B15/02

摘要： Terminal equipment (10) for telecommunications and information processing with improved electromagnetic compatibility (EMC). The equipment has a human-machine interface (HMI), connected via HMI cables 31 and 32, a metallic telecommunications interface (TCI), connected via TCI cable 41, and optionally a power line interface (PLI), connected via PLI cord 42. First common-mode rejection filters (Lc11, C11, C13; Lc12, C12, C14) comprising common-mode choke coils (Lc) and shunt capacitors (C) are placed at the HMI interface of the equipment, while second common-mode rejection filters (Lc21, C21, C23; Lc22, C22, C24) comprising the same components are placed at the TCI and PLI interfacces. High-frequency junction points (P1-P4) of the fisrt and second common-mode rejection filters are interconnected with a bypass circuit (BG). Being isolated from the signal ground (SG) and frame ground (FG) of the equipment, the bypass circuit (BG) is an independent non-grounded circuit. Such internal structure makes it possible to reject noise signals induced by an external noise source and also to suppress spurious radiation from an internal noise source.

公开(公告)号：EP0778683A2

公开(公告)日：1997-06-11

申请号：EP96308746.5

申请日：1996-12-03

申请人： FUJITSU LIMITED

发明人： Sudo, Yozo ,  Yamaguchi, Yuji

IPC分类号： H04B15/02

CPC分类号： H04B15/02

摘要： Terminal equipment (10) for telecommunications and information processing with improved electromagnetic compatibility (EMC). The equipment has a human-machine interface (HMI), connected via HMI cables 31 and 32, a metallic telecommunications interface (TCI), connected via TCI cable 41, and optionally a power line interface (PLI), connected via PLI cord 42. First common-mode rejection filters (Lc11, C11, C13; Lc12, C12, C14) comprising common-mode choke coils (Lc) and shunt capacitors (C) are placed at the HMI interface of the equipment, while second common-mode rejection filters (Lc21, C21, C23; Lc22, C22, C24) comprising the same components are placed at the TCI and PLI interfacces. High-frequency junction points (P1-P4) of the fisrt and second common-mode rejection filters are interconnected with a bypass circuit (BG). Being isolated from the signal ground (SG) and frame ground (FG) of the equipment, the bypass circuit (BG) is an independent non-grounded circuit. Such internal structure makes it possible to reject noise signals induced by an external noise source and also to suppress spurious radiation from an internal noise source.

摘要翻译： 终端设备（10），用于电信和信息处理，具有改进的电磁兼容性（EMC）。 该设备具有通过HMI电缆31和32连接的人机接口（HMI），通过TCI电缆41连接的金属电信接口（TCI）和可选地通过PLI线42连接的电力线接口（PLI）。 包括共模扼流线圈（Lc）和并联电容器（C）的第一共模抑制滤波器（Lc11，C11，C13; Lc12，C12，C14）被放置在设备的HMI接口处，而第二共模抑制 将包含相同组分的过滤器（Lc21，C21，C23; Lc22，C22，C24）置于TCI和PLI界面处。 fisrt和第二共模抑制滤波器的高频接点（P1-P4）与旁路电路（BG）互连。 与设备的信号地（SG）和框架地（FG）隔离，旁路电路（BG）是独立的非接地电路。 这种内部结构使得可以抑制由外部噪声源引起的噪声信号，并且还抑制来自内部噪声源的杂散辐射。