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公开(公告)号：EP0237656B1
公开(公告)日：1992-04-08
申请号：EP86202325.6
申请日：1986-12-18
申请人： ALCATEL N.V.
IPC分类号： H04M19/00
CPC分类号： H04M19/008 , H04M3/40
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公开(公告)号：EP0201635B1
公开(公告)日：1991-12-18
申请号：EP85200774.9
申请日：1985-05-17
CPC分类号： H04M19/026 , H04M3/005 , H04M3/2272 , H04M19/005 , H04M19/02
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公开(公告)号：EP0237656A3
公开(公告)日：1988-07-27
申请号：EP86202325
申请日：1986-12-18
申请人： ALCATEL N.V.
IPC分类号： H04M19/00
CPC分类号： H04M19/008 , H04M3/40
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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公开(公告)号：EP0201635A1
公开(公告)日：1986-11-20
申请号：EP85200774.9
申请日：1985-05-17
CPC分类号： H04M19/026 , H04M3/005 , H04M3/2272 , H04M19/005 , H04M19/02
摘要： Telecommunication line circuit including a Herter bridge (R o - R5) with a first pair of terminals (STB, SRA) coupled to a bidirectional 2-wire line, a second pair of terminals (STA, SRB) coupled to an exchange, and a third pair of terminals (A,B) where longitudinal currents are eliminated from sensed signals, as well as a ringing generator (RC) that may be coupled across the second pair of terminals which is coupled to a receive leg (RX) of a 4-wire exchange circuit and, through switching means (sw30/31) to the ringing generator while the third pair of terminals is coupled to a transmit leg (Tx) of the 4-wire exchange circuit.
摘要翻译： 包括耦合到双向2线线路的第一对终端（STB，SRA）和耦合到交换机的第二对终端（STA，SRB）的赫特桥（R0-R5）的电信线路电路，以及第三 从感测到的信号中消除纵向电流的一对端子（A，B）以及可以耦合到第二对端子的振铃发生器（RC），该第二对端子耦合到四线制的接收支路（RX） 并且通过切换装置（sw30 / 31）到振铃发生器，而第三对终端耦合到4线交换电路的发送支路（Tx）。
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5.发明公开Telecommunication line circuit and amplifier circuit used therein 失效Fernmeldeleitungsschaltung mit darin verwendeterVerstärkerschaltung。
公开(公告)号：EP0237656A2
公开(公告)日：1987-09-23
申请号：EP86202325.6
申请日：1986-12-18
申请人： ALCATEL N.V.
IPC分类号： H04M19/00
CPC分类号： H04M19/008 , H04M3/40
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.
摘要翻译： 具有耦合在线路馈送电阻（R0 / 1）和线路放大器（LOA0 / 1）的电源输入（VEET）之间的电阻合成电路的电信线路电路，并且包括与AC滤波器耦合的线路电流感测电路（SENC） R22，R23，C4），其直接连接到负输入连接到控制电路的运算放大器（OA6）的正输入，其中控制电压被转换为从该负输入导出的电流。 该放大器的输出与线路放大器耦合。
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公开(公告)号：EP0193244A2
公开(公告)日：1986-09-03
申请号：EP86200271.4
申请日：1986-02-21
CPC分类号： H04M19/023 , H04M3/005 , H04Q1/38
摘要： Polarity reversal circuit including a differential amplifier (Tl/4) and a signal source able to apply a constant voltage and a gradually varying voltage to respective inputs of the amplifier each via the series connection of the gate-to- source path of a field effecttransistor (NM2/3), the base-emitterfunc- tion of a bipolar transistor (T7/8) and a resistance (R14/18) constituting together with another resistance (R15/19) a voltage divider connected to a temperature independent reference voltage (VREF).
摘要翻译： 极性反转电路包括差分放大器（T1 / 4）和能够通过场效应的栅极 - 源极路径的串联连接向放大器的各个输入施加恒定电压和逐渐变化的电压的信号源 晶体管（NM2 / 3），双极晶体管（T7 / 8）的基极 - 发射极 - 功能和与另一个电阻（R15 / 19）组合的电阻（R14 / 18），分压器连接到独立于温度的参考电压 （VREF）
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