Battery backup system
US4143283A · kind A · utility
71Cited by
4References
16Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jan 17, 1978 |
| Grant date | Mar 6, 1979 |
| Priority date | — |
| Expiry date | Jan 17, 1998 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02J9/061
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A battery backup system provides DC power to a data processing system in the event of an AC power failure. A preferred embodiment supplies DC power from a plurality of series-connected batteries at a voltage level sufficient to operate a data processor. After a time delay, the batteries are connected in parallel to provide DC power at a lower voltage level sufficient to maintain information stored in a memory.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.