Network interface with transient protection apparatus for...

Details Network interface with transient protection apparatus for... Network interface with transient protection apparatus for...

2007-02-23

2010-12-21

Nguyen, Danny (Department: 2836)

Electricity: electrical systems and devices

Safety and protection of systems and devices

Transient responsive

C361S056000

Reexamination Certificate

active

07855866

ABSTRACT:
A network interface apparatus is disclosed that includes a connector coupled to a plurality of communication lines. A Physical Layer (PHY) device coupled to the communication lines and to a first ground level. A transient event suppression module coupled between the communication lines and a low impedance path to earth ground. During a transient event the transient event suppression module provides a low impedance path to the earth ground to protect the PHY device from the transient event. A power circuit that delivers power from a second ground level to the PHY device is coupled to the first ground level. The first ground level and the second ground level are coupled to provide a low impedance path during normal operation and high impedance during transient events.

REFERENCES:
patent: 2007/0121832 (2007-05-01), Ghoshal
patent: 2008/0049458 (2008-02-01), Pozzuoli et al.

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