Method for determining power supply compatibility in a portable device
US6653814B1 · kind B1 · utility
30Cited by
6References
9Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jun 28, 2002 |
| Grant date | Nov 25, 2003 |
| Priority date | — |
| Expiry date | Jul 2, 2022 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02J7/00304
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A power supply that is compatible with a portable electric or electronic device is provided with a current sensing circuit. When the current exceeds a threshold level in response to the device intentionally changing its current demand, the power supply changes its voltage output level. The voltage change indicates to the device the power supply is a compatible power supply, and indicates the user of the device the power supply is compatible.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.