Overvoltage protector bridge circuit
    24.
    发明授权
    Overvoltage protector bridge circuit 失效
    过电压保护桥电路

    公开(公告)号:US06628497B1

    公开(公告)日:2003-09-30

    申请号:US09657262

    申请日:2000-09-07

    CPC classification number: H04M3/18 H04M2201/02

    Abstract: An overvoltage protector bridge circuit for protecting telecommunications equipment against voltage surges on transmission lines utilizes an overvoltage protection device in a bridge circuit having multiple diodes arranged in series or in parallel on each leg of the circuit. The overvoltage protection device conducts when it reaches a threshold voltage potential. The overvoltage protection device is electrically connected between a pair of connection nodes in the bridge circuit. The bridge circuit is made up of multiple diodes arranged along each of the legs of the circuit, which extend between the tip line and the ring line and the connection nodes. At least two diodes are arranged in series or in parallel along each leg of the bridge circuit to steer the excess voltage on the tip line or the ring line, or both, through the overvoltage protection device to ground. The use of multiple diodes on each leg of the bridge circuit reduces the effective off-state capacitance of the overvoltage protection device, thereby permitting the bridge circuit to be utilized for high frequency transmission line applications, and increases the overall surge current handling capability of the bridge circuit.

    Abstract translation: 用于保护电信设备免受传输线路上的电压浪涌的过电压保护器桥接电路使用具有串联或并联布置在电路的每条支路上的多个二极管的桥式电路中的过电压保护装置。 过电压保护装置在达到阈值电压时进行。 过电压保护装置电连接在桥式电路中的一对连接节点之间。 桥接电路由沿着电路的每个支路布置的多个二极管组成,其在尖端线与环线和连接节点之间延伸。 至少两个二极管串联或并联布置在桥接电路的每个支路上,以将尖端线路或环形线路上的过电压或两者通过过压保护装置转向地。 在桥式电路的每条支路上使用多个二极管可以降低过电压保护装置的有效截止状态电容,从而允许桥接电路用于高频传输线应用,并提高整个浪涌电流处理能力 桥电路。

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