Secondary electrical power supply
US5399909A · kind A · utility
5Cited by
3References
8Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Mar 8, 1993 |
| Grant date | Mar 21, 1995 |
| Priority date | — |
| Expiry date | Mar 8, 2013 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02J7/34
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A secondary battery equipped power supply is provided with charging and related circuitry such that when placed in a location, such as in a DC powered electrical transit system, where there are normal, surge and continuous peak demands placed on the primary DC supply, the battery charges during normal operation and discharges to provide additional power on the occasion of a surge or peak demand.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.