Sensing auxiliary power in various peripheral component interconnect environments
US6438429B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 3, 1999 |
| Grant date | Aug 20, 2002 |
| Priority date | — |
| Expiry date | Dec 3, 2019 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F1/266
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A circuit and method thereof for indicating availability of a power source other than a first power source in a computer system peripheral device (such as a network adapter) connected to a plurality of power sources including. The circuit includes a circuit subassembly coupled to the first power source and a second power source. The circuit subassembly conducts current from the first power source when power is not available from the second power source and otherwise conducts current from the second power source. A first component is coupled to the circuit subassembly and conducts current when the second power source is available; otherwise, it does not conduct current. A second component is coupled to the circuit subassembly and to the first component. The second component conducts current when the first component is conducting current and otherwise does not conduct current. An output lead is coupled to the second component, and the output lead provides a signal indicating the second power source is available.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.