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    • 8. 发明申请
    • OVERVOLTAGE PROTECTOR CIRCUIT AND A DETECTOR CIRCUIT FOR SUPERVISING SUCH A PROTECTOR CIRCUIT
    • 过电压保护电路和用于监控这种保护电路的检测器电路
    • US20090085758A1
    • 2009-04-02
    • US12279761
    • 2006-02-16
    • Tomas Eriksson
    • Tomas Eriksson
    • G08B21/00H02H9/04
    • H02H3/048H02H9/06
    • An overvoltage protector circuit for telecommunication equipments is disclosed. The protector circuit includes a gas discharge tube connected to a communication line for passing any harmful surge currents appearing in the line to ground. A degradation detector circuit is arranged to detect any degradation of the gas discharge tube, the detector circuit comprises a reference gas discharge tube with a higher breakdown voltage than the supervised gas discharge tube and an alarm circuit loop connected to an alarm system. The alarm system is arranged to detect when current is breaking through the reference gas discharge tube and to initiate a degradation alarm.
    • 公开了一种用于电信设备的过电压保护电路。 保护器电路包括连接到通信线路的气体放电管,用于将出现在线路中的任何有害的浪涌电流传递到地。 劣化检测器电路被设置为检测气体放电管的任何劣化,检测器电路包括具有比监督气体放电管更高的击穿电压的参考气体放电管和连接到报警系统的报警电路回路。 报警系统被设置为检测当前正在通过参考气体放电管的电流,并发起降级报警。