公开(公告)号：US06563926B1

公开(公告)日：2003-05-13

申请号：US09361854

申请日：1999-07-27

Applicant: Anthony A. Pistilli

Inventor： Anthony A. Pistilli

IPC: H04M100

CPC classification number: H04M3/18 ,  H02H9/048 ,  H04M2201/80

Abstract: A surge reset circuit used to automatically reset a surge protection circuit within a telephone line interface circuit. A sensor (e.g., a zenering device) advantageously generates a voltage level representing current draining out of the transient voltage suppression portion of the surge protection circuit after a transient energy surge. If the current is draining, which may indicate a potential lockup situation, feedback circuitry generates a reset feedback signal that is provided to a cutoff device. The cutoff device, in response to receiving the feedback signal, disables a current limiter portion of the surge protection circuit to reduce the current draining from the transient voltage suppression portion. As the current level is reduced, the transient voltage suppression portion will reset when the current drops below a threshold value or is substantially eliminated. As a result, the feedback circuitry removes the reset feedback signal from the cutoff device to re-enable the current limiter.

Abstract translation: 浪涌复位电路，用于自动复位电话线接口电路内的浪涌保护电路。 传感器（例如，齐纳装置）有利地在瞬态能量浪涌之后产生表示从浪涌保护电路的瞬态电压抑制部分排出的电流的电压电平。 如果电流正在排水，这可能表示潜在的锁定情况，反馈电路产生提供给切断装置的复位反馈信号。 截止装置响应于接收到反馈信号而禁用浪涌保护电路的限流器部分，以减小从瞬态电压抑制部分流出的电流。 当电流电平降低时，当电流下降到阈值以下或基本上消除时，瞬态电压抑制部分将复位。 结果，反馈电路从切断装置去除复位反馈信号以重新启用限流器。

公开(公告)号：US6108183A

公开(公告)日：2000-08-22

申请号：US237984

申请日：1999-01-25

Applicant: Gerald W. Beene

Inventor： Gerald W. Beene

IPC: H04M3/18 ,  H02H3/00

CPC classification number: H04M3/18 ,  H04M2201/80

Abstract: A current limiter is provided that includes a power switch for receiving input power from a power source and passing at least a portion of the input power to an output, a current sense mechanism coupled to the power switch for sensing current flowing through the current limiter and for providing a current flow signal related to the current flow through the current limiter, and a control mechanism coupled to the power switch that causes the power switch to reduce the current flow when the current flow signal indicates that the current flow exceeds a first current flow level. In one embodiment the current limiter may include a voltage sense mechanism that senses the voltage drop across the input to output of the device and use a reference voltage and a control loop to maintain the voltage drop relatively constant at all load currents. In another embodiment the current limiter may include a timing mechanism that provides a timing signal that is used by the control mechanism to cause the power switch to block power transmission to the load. In yet another embodiment the current limiter may include a temperature sensing mechanism that provides a first temperature signal that is used by the control mechanism to cause the power switch to block power transmission when the temperature signal indicates that a monitored temperature exceeds a reference temperature. Optionally, the current limiter may include a surge voltage protection mechanism that blocks high voltage power surges from the output. Also, the current limiter may include short circuit protection means.

Abstract translation: 提供了限流器，其包括用于从电源接收输入功率并将至少一部分输入功率传递到输出的电源开关，耦合到电源开关的电流感测机构，用于感测流过限流器的电流;以及 用于提供与通过限流器的电流相关的电流流动信号;以及耦合到电源开关的控制机构，当电流流动信号指示电流超过第一电流时，电流开关减小电流 水平。 在一个实施例中，电流限制器可以包括电压感测机构，其感测输入到设备的输出端的电压降，并且使用参考电压和控制回路来在所有负载电流下保持电压降相对恒定。 在另一个实施例中，电流限制器可以包括定时机构，其提供由控制机构用于使电源开关阻断向负载的电力传输的定时信号。 在又一个实施例中，限流器可以包括温度感测机构，其提供当温度信号指示所监视的温度超过参考温度时由控制机构使用的第一温度信号以使功率开关阻止功率传输。 可选地，电流限制器可以包括阻止来自输出端的高压功率浪涌的浪涌电压保护机构。 此外，限流器可以包括短路保护装置。

公开(公告)号：US5490215A

公开(公告)日：1996-02-06

申请号：US241868

申请日：1994-05-12

Applicant: Dimitris J. Pelegris

Inventor： Dimitris J. Pelegris

IPC: H02H9/04 ,  H04M3/18

CPC classification number: H04M3/18 ,  H02H9/048 ,  H04M2201/80

Abstract: A fiber to curb and telecommunications T1 carrier overvoltage protection apparatus includes a pair of semiconductor junction breakdown crowbar devices connected in series between TIP and RING telephone lines, and a reverse standoff voltage breakdown zener-type device connected between ground potential and a junction connection of the series connected semiconductor junction breakdown crowbar devices.

Abstract translation: 光纤到路缘和电信T1载波过电压保护装置包括在TIP和RING电话线之间串联连接的一对半导体结击穿撬棒装置，以及连接在地电位和地电位之间的反向隔离电压击穿齐纳型装置 串联连接半导体结击穿撬棒器件。

公开(公告)号：US5392349A

公开(公告)日：1995-02-21

申请号：US885098

申请日：1992-05-18

Applicant: Joseph M. Elder, Jr.

Inventor： Joseph M. Elder, Jr.

IPC: H02H3/20 ,  H04M3/18 ,  H04Q3/42 ,  H04M7/00

CPC classification number: H04M3/18 ,  H04M2201/80

Abstract: By opening switches coupling a subscriber loop to circuits in a SLIC when an overvoltage condition occurs, the SLIC is protected from damage. The overvoltage is detected by a overvoltage protector behind the switches. The overvoltage condition is latched and the common control is notified of the condition. The common control may then clear the latch, reclosing the switches. If the overvoltage still exists, the switches are re-opened and maintenance personnel is notified of the fault.

Abstract translation: 当发生过电压状态时，通过打开将用户环路耦合到SLIC中的电路的开关，可以保护SLIC免受损坏。 过压由开关后面的过电压保护器检测。 锁存过压状态，通知通用控制条件。 然后，公共控制可以清除闩锁，重新闭合开关。 如果过电压仍然存在，则重新打开开关，并通知维护人员故障。