Power sourcing equipment having bipolar junction transistor for controlling power supply and supporting AC disconnect-detection function
US8014412B2 · kind B2 · utility
4Cited by
1References
8Claims
0Family size
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Inventor
Key dates
| Filing date | Apr 19, 2006 |
| Grant date | Sep 6, 2011 |
| Priority date | — |
| Expiry date | Jun 7, 2030 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L12/10
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
A power supply system for providing power to a powered device over a communication link includes a power supply device capable of supporting an AC disconnect-detect function. The power supply device has a controller, an output port coupled to the communication link, and a bipolar junction transistor (BJT) controlled by the controller to provide power to the output port. The BJT may be turned off to present a high impedance required to support the AC disconnect-detection function.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.