发明公开
EP0237656A2 Telecommunication line circuit and amplifier circuit used therein
失效
Fernmeldeleitungsschaltung mit darin verwendeterVerstärkerschaltung。
- 专利标题： Telecommunication line circuit and amplifier circuit used therein
- 专利标题（中）： Fernmeldeleitungsschaltung mit darin verwendeterVerstärkerschaltung。
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申请号： EP86202325.6申请日： 1986-12-18
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公开(公告)号： EP0237656A2公开(公告)日： 1987-09-23
- 发明人: Pieters, Jozef Frans Pharida , Moons, Elve Desiderius Jozef
- 申请人： ALCATEL N.V.
- 申请人地址： Strawinskylaan 537, (World Trade Center) NL-1077 XX Amsterdam NL
- 专利权人： ALCATEL N.V.
- 当前专利权人： ALCATEL N.V.
- 当前专利权人地址： Strawinskylaan 537, (World Trade Center) NL-1077 XX Amsterdam NL
- 代理机构： Vermeersch, Robert
- 优先权： BE2060894 19851220
- 主分类号： H04M19/00
- IPC分类号： H04M19/00
摘要：
Telecommunication line circuit with a resistance synthesis circuit coupled between line feed resistances - (RO/1) and supply inputs (VEET) of line amplifiers (LOAO/1) and including a line current sensing circuit (SENC) which is coupled with an AC filter (R22, R23, C4) which is directly connected to the plus input of an operational amplifier (OA6) whose minus input is connected to a control circuit wherein a control voltage is converted into a current which is derived from this minus input. The output of this amplifier is coupled with the line amplifiers.
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