Network interface with transient protection apparatus for multiple ground planes
US7855866B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Feb 23, 2007 |
| Grant date | Dec 21, 2010 |
| Priority date | — |
| Expiry date | Sep 8, 2029 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L25/029
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
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.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.