Method and apparatus for current sharing ethernet power across four conductor pairs
US7474704B2 · kind B2 · utility
13Cited by
3References
16Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 16, 2005 |
| Grant date | Jan 6, 2009 |
| Priority date | — |
| Expiry date | Jan 23, 2027 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L12/413
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
Methods and apparatus for delivering power down all conductors of an Ethernet connection are disclosed. Embodiments include control circuitry coupled to both conductor of an Ethernet cable. The control circuitry is configured to sense the current flowing through power switches coupled inline with the respective conductors and control the switch in order to maintain the current flow through the power switch below a predetermined level. The circuitry prevents Ethernet ports from being shutting down due to conditions caused by imbalances in the effective resistance of Ethernet conductors and circuit paths.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.