Power sourcing equipment and connection checking method
US11418355B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Apr 20, 2021 |
| Grant date | Aug 16, 2022 |
| Priority date | — |
| Expiry date | Apr 20, 2041 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02M7/06
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A power sourcing equipment includes a control logic circuit and current source circuits that are coupled to a powered device via first and second wire pairs of a network cable respectively. The control logic circuit controls one of the current source circuits to drain a current from the powered device via the first wire pair during a first interval, to detect a first voltage of the first wire pair and a second voltage of the second wire pair, and controls the current source circuits to respectively drain currents from the powered device via the first and the second wire pairs during a second interval, to detect a third voltage of the first wire pair and a fourth voltage of the second wire pair, and determines whether the powered device is a single signature or a dual signature according to the first to the fourth voltages.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.