Uninterruptible power supply with an automatic transfer switch
US5939799A · kind A · utility
74Cited by
6References
10Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jul 16, 1997 |
| Grant date | Aug 17, 1999 |
| Priority date | — |
| Expiry date | Jul 16, 2017 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02J1/10
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
Power is supplied to a load from either a first power source or a second power source. A transfer switch determines which of the power sources provides the power to the load. A switch control detects a loss in the power provided by a first power source and signals the transfer switch to switch to a second power source. A small energy storage device provides power to the load, during the switch from the first power source to the second power source.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.