Backup power supply with parallel AC power source and DC power source
US7394674B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Dec 28, 2004 |
| Grant date | Jul 1, 2008 |
| Priority date | — |
| Expiry date | Apr 3, 2026 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02J1/102
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
Provided is a backup power supply comprising at least one DC/DC power electrically connected to a DC power source for taking DC current therefrom prior to providing regulated DC current, at least one AC/DC power electrically connected to an AC power source for taking AC current therefrom prior to providing rectified DC current, and a power control device including a power balance unit, a power output circuit, and a detection circuit each interconnected the AC/DC power and the DC/DC power. The power control device can combine DC current from both the AC/DC power and the DC/DC power prior to providing to an electronic device (e.g., computer). The invention can continue providing electricity to the computer in the event of not only a malfunctioning of the AC/DC or DC/DC power but also a power outage of either the AC or DC power source.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.