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1. 发明专利

MXPA06008534A PROTECCION CONTRA SOBREVOLTAJE EN LINEAS TELEFONICAS/DATOS, ADECUADA PARA INSTALACIONES CON CONEXIONES A TIERRA DE BAJA CALIDAD. 未知
公开(公告)号：MXPA06008534A
公开(公告)日：2006-08-28
申请号：MXPA06008534
申请日：2005-01-25
申请人： TYCO ELECTRONICS ARGENTINA SA
发明人： GUTNISKY WALTERF GUSTAVO
IPC分类号： H04M3/18 , H02H3/06 , H02H3/20 , H02H9/04 , H04M03/18
摘要： Un dispositivo de proteccion (10) utiliza un rele de enganche (11) de bobina unica (15) para desconectar una instalacion telefonica y/o datos de las lineas de transmision DC (12) en el caso de una perturbacion de AC de lineas/sobrevoltaje. Un circuito disparador (19) y un circuito de reinicio (21) se conectan respectivamente a terminales normalmente cerradas (SALA1, SALB1), y normalmente abiertas (ENTA2, ENB2) del rele para monitorear el voltaje de linea utilizando una conexion de tierra como un voltaje de referencia, suministrando respectivamente corrientes de disparo (23) o reinicio (25) a la bobina para conmutar el rele. De alli en adelante, el dispositivo de proteccion puede tolerar operativamente una conexion a tierra de resistencia elevada barata. La corriente de reinicio se suministra a la bobina de reinicio mediante un circuito transistor (Q1, Q2) solamente despues de que la perturbacion ha cesado, el voltaje de transmision nominal se ha restaurado y la linea se ha estabilizado por algunos segundos.

2. 发明公开

EP0242562A3 Protection circuit for the overvoltage protection of a subscriber circuit 失效
标题翻译：保护电路的过电压保护电路
公开(公告)号：EP0242562A3
公开(公告)日：1988-07-06
申请号：EP87103427
申请日：1987-03-10
申请人： Siemens Aktiengesellschaft
发明人： Lechner, Robert, Dipl.-Ing. , Rudolf, Hans-Werner, Dr.rer.nat. , Krimmer, Roland, Dipl.-Ing.
IPC分类号： H04M03/18 , H04M03/00 , H04M03/30
CPC分类号： H04M3/18

3. 发明公开

EP0185213A3 Circuit arrangement for overcharge protection of a subscriber current supply circuit, especially in a digital telephone exchange 失效
标题翻译：用于超大规模保护订户电流供电电路的电路布置，特别是数字电话交换
公开(公告)号：EP0185213A3
公开(公告)日：1988-09-21
申请号：EP85114727
申请日：1985-11-19
申请人： Siemens Aktiengesellschaft
发明人： Dragotin, Alexander, Dipl.-Ing.
IPC分类号： H04M03/18 , H04M19/00
CPC分类号： H04M19/001 , H04M3/18

4. 发明申请

WO1997038517A1 POWER CROSS DETECTION USING LOOP CURRENT AND VOLTAGE 审中-公开
标题翻译：使用环路电流和电压进行电源检测
公开(公告)号：WO1997038517A1
公开(公告)日：1997-10-16
申请号：PCT/US1997001043
申请日：1997-01-23
申请人： ADVANCED MICRO DEVICES, INC.
发明人： ADVANCED MICRO DEVICES, INC. , SCHOPFER, Walter, S.
IPC分类号： H04M03/18
CPC分类号： H04M1/745 , C08J9/144 , C08J9/149 , C08J2203/14 , C08J2203/142 , C08J2203/18 , C08J2375/04 , H04M3/18
摘要： A power cross detection circuit that detects a power cross condition on the ring and tip lines of a telephone system. The power cross detection circuit senses a loop current flowing across a ring feed resistor (Rgfd 1), as well as a loop voltage at a first node (2) and a second node (4) at opposite ends of the ring feed resistor. Based on these sensed values, a threshold voltage for detecting a power cross condition can be adjusted to detect the power cross condition at a lower voltage value.
摘要翻译：电力交叉检测电路，其检测电话系统的环线和末端线路上的电力交叉状态。电力交叉检测电路感测流过环馈电电阻器（Rgfd 1）的回路电流以及在环馈电电阻器的相对端的第一节点（2）和第二节点（4）处的回路电压。基于这些感测值，可以调整用于检测功率交叉条件的阈值电压，以在较低电压值下检测功率交叉条件。

5. 发明申请

WO1996001015A1 AN APPARATUS FOR PROTECTING A SUBSCRIBER LINE INTERFACE CIRCUIT AGAINST OVERVOLTAGES 审中-公开
标题翻译：保护用户线路接口电路防止过电压的装置
公开(公告)号：WO1996001015A1
公开(公告)日：1996-01-11
申请号：PCT/SE1995000800
申请日：1995-06-28
申请人： TELEFONAKTIEBOLAGET LM ERICSSON , ERIKSSON, Hans, Oskar
发明人： TELEFONAKTIEBOLAGET LM ERICSSON
IPC分类号： H04M03/18
CPC分类号： H04M3/18 , H02H1/0038 , H02H9/041
摘要： An apparatus for protecting a subscriber line interface circuit (1) against overvoltages occurring on its two input wires (A, B) and exceeding the voltage of the supply voltage source of the subscriber line interface circuit (1). A resistor (RA, RB) is connected in series with a respective input wire (A, B) to respective input terminals (LA, LB) of the subscriber line interface circuit. Each input terminal (LA, LB) is connected to the anode of a respective first diode (DA1, DB1), whose cathode is connected to the positive terminal of the supply voltage source, and also to the cathode of a respective second diode (DA2, DB2). The anodes of the second diodes are connected to the cathode of a thyristor (TAB) which is common to the second diodes. The anode of the thyristor is connected to the positive terminal of the supply voltage source and the gate of the thyristor is connected to the negative terminal of the supply voltage source.
摘要翻译：一种用于保护用户线路接口电路（1）的装置，用于抵抗在其两条输入线（A，B）上出现的超过用户线路接口电路（1）的电源电压的电压的过电压。电阻器（RA，RB）与相应的输入线（A，B）串联连接到用户线路接口电路的各个输入端子（LA，LB）。每个输入端子（LA，LB）连接到相应的第一二极管（DA1，DB1）的阳极，其阴极连接到电源电压源的正极端，并连接到相应的第二二极管（DA2 ，DB2）。第二二极管的阳极连接到第二二极管共用的晶闸管（TAB）的阴极。晶闸管的阳极连接到电源电压源的正极，晶闸管的栅极连接到电源电压源的负极。

6. 发明申请

WO1990008441A1 EARTH DETECTING CIRCUIT 审中-公开
标题翻译：接地检测电路
公开(公告)号：WO1990008441A1
公开(公告)日：1990-07-26
申请号：PCT/JP1990000036
申请日：1990-01-12
申请人： FUJITSU LIMITED , KINOSHITA, Kazumi , TAKATO, Kenji , TOJO, Toshiro
发明人： FUJITSU LIMITED
IPC分类号： H04M03/18
CPC分类号： H04M19/008 , H04M3/30 , H04M19/006
摘要： This invention relates to an earth detecting circuit for a long-distance subscriber's circuit in a small-capacity digital electronic switch-board. A DC/DC converter of a power source for supplying electric power is stopped when an earth is detected. Upon receiving a stop signal, the DC/DC converter converts the source voltage for the subscriber's circuit into the voltage of the system power source for the switch-board, i.e., the voltage before the conversion by the DC/DC converter. The supply resistors in the power supplying circuit are not broken even when the current continues to flow through the supply resistors because of the earth, and the alarm state is kept until the operation for resume is performed.

7. 发明公开

EP0252872A3 Circuit arrangement for determining subscriber loop conditions (constant current feeding) 失效
标题翻译：用于确定订户环路条件的电路布置（恒定电流输入）
公开(公告)号：EP0252872A3
公开(公告)日：1988-11-09
申请号：EP87730072
申请日：1987-07-02
申请人： Siemens Aktiengesellschaft
发明人： Schade, Gerd, Dipl.-Ing. , Schley, Michael, Dipl.-Ing. , Schüler, Ulrich, Dipl.-Ing.
IPC分类号： H04M03/22 , H04M03/18 , H04M03/00
CPC分类号： H04M3/2272 , H04M3/18
摘要： Die Erfindung betrifft eine Schaltungsanordnung zur Auswer tung von Teilnehmerschleifenzuständen in Fernsprechanlagen, insbesondere in Fernsprechnebenstellenanlagen, mit beim Verbindungsaufbau zwischen Teilnehmerstellen derselben Anlage bzw. zwischen einer Teilnehmerstelle der Anlage und einer Teilnehmerstelle einer zweiten Anlage über eine ent sprechende Verbindungsleitung unter Verwendung von an je einer Sprechader mit unterschiedlichem Potential angeschal teten Auswertemitteln, wobei in Reihe mit jedem dieser Aus wertemittel eine die Funktion einer Drosselspule mit hohem Scheinwiderstand, mit geringer Einfügungsdämpfung und mit hoher Unsymmetriedämpfung bildende Anordnung, bestehend aus einem elektronischen Schalter, angeordnet ist.
Im Schaltstromkreis des jeweiligen elektronischen Schalters (TA, TB) ist ein in Hybridtechnik ausgeführter Speisestrom widerstand (RA, RB) vorgesehen, wobei einer der beiden Spei sestromwiderstände (RA, RB) durch Läserabgleich an die Lei tungsverhältnisse angepaßt werden kann. Die Speisestromwi derstände (RA, RB) sind derart dimensioniert, daß der Speise strom der A-Ader (IA) gleich dem Speisestrom der B-Ader (-IB) ist.
Derartige Schaltungsanordnungen sind in Teilnehmeranschluß baugruppen in Fernsprechanlagen, insbesondere in Fernsprech nebenstellenanlagen, eingesetzt.

8. 发明公开

EP0242563A3 Protection circuit for the overvoltage protection of a subscriber circuit 失效
标题翻译：保护电路的过电压保护电路
公开(公告)号：EP0242563A3
公开(公告)日：1988-07-20
申请号：EP87103429
申请日：1987-03-10
申请人： Siemens Aktiengesellschaft
发明人： Lechner, Robert, Dipl.-Ing. , Rudolf, Hans-Werner, Dr.rer.nat. , Krimmer, Roland, Dipl.-Ing.
IPC分类号： H04M03/18 , H04M03/00
CPC分类号： H04M3/18

9. 发明公开

EP0186873A3 Protector circuit 失效
标题翻译：保护电路
公开(公告)号：EP0186873A3
公开(公告)日：1987-08-26
申请号：EP85116302
申请日：1985-12-20
申请人： NIPPON TELEGRAPH AND TELEPHONE CORPORATION
发明人： Satoh, Hidetaka , Kurosawa, Hideyuki , Kamijoh, Yoshiaki , Jyumonji, Hiromichi
IPC分类号： H02H09/04 , H04M03/18
CPC分类号： H04M3/18 , H02H9/04 , H02H9/042
摘要： A series connection of a bidirectional voltage limiting element (32) and a two-terminal bidirectional thyristor (33) is connected between a signal line (12) connected to a communication equipment (11) and ground. Breakdown voltage V B of the bidirectional voltage limiting element is set to be slightly higher than battery feed voltage V Bf on the signal line. The sum of this breakdown voltage V B and break-over voltage V BO of the bidirectional thyristor is set to be lower than breakdown voltage V R of the equipment and higher than non-operation voltage V A .

10. 发明申请

WO1996011543A1 PROTECTION OF ACTIVE TELEPHONE LINE INTERFACE CIRCUITS 审中-公开
标题翻译：有源电话线接口电路的保护
公开(公告)号：WO1996011543A1
公开(公告)日：1996-04-18
申请号：PCT/CA1995000125
申请日：1995-03-08
申请人： NORTHERN TELECOM LIMITED
发明人： NORTHERN TELECOM LIMITED , PISTILLI, Antonio
IPC分类号： H04M03/18
CPC分类号： H04M3/18 , H02H9/048 , H04M2201/80
摘要： A telephone line interface circuit with d.c. amplifiers (12) coupled to tip and ring paths is protected against transient voltages by a crowbar-type protection device (52) coupled via a diode bridge (28, 30) to the tip and ring paths, positive and negative terminals of the diode bridge being connected respectively to ground and via a diode (54) to a negative supply voltage line for the amplifiers. The diode prevents discharge of a capacitor (26), coupled between the negative supply voltage line and ground, through the protection device when it conducts. A locked up state, in which the amplifiers maintain holding current to the protection device after a transient voltage, is avoided by further diodes (56, 58) coupled from the negative terminal of the diode bridge to inputs of the amplifiers, or by controlling a current limiter (34) to interrupt current to the capacitor when the diode is reverse biased, so that the capacitor discharges. The current limiter includes a resistance (38) and inductance (40) in series for sensing current, whereby initial charging current for the capacitor is reduced on closing of relay contacts (K1, K2) in series with the current limiter, and relay contact deterioration is avoided.
摘要翻译：具有直流电的电话线路接口电路耦合到尖端和环路的放大器（12）通过经由二极管桥（28,30）耦合到尖端和环路径的通路型保护装置（52）来防止瞬态电压，二极管桥的正端和负端分别连接到地和通过二极管（54）连接到用于放大器的负电源电压线。当二极管导通时，二极管防止通过保护装置在负电源电压线和地之间耦合的电容器（26）的放电。通过从二极管电桥的负端子耦合到放大器的输入端的另外的二极管（56,58）避免放大器在瞬态电压之后保持对保护装置的保持电流的锁定状态，或通过控制限流器（34）在二极管反向偏置时中断电容器电流，使电容放电。电流限制器包括用于感测电流的电阻（38）和电感（40），由此在与限流器串联的继电器触点（K1，K2）闭合时，电容器的初始充电电流减小，并且继电器触点劣化被避免。

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