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。