Off-line switcher with battery reserve
US4745299A · kind A · utility
53Cited by
16References
4Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Apr 17, 1986 |
| Grant date | May 17, 1988 |
| Priority date | — |
| Expiry date | Apr 17, 2006 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02J9/067
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
An off-line switcher includes an auxiliary winding on the secondary side of the power transformer coupled by a power switch to a secondary voltage source in order to provide uninterruptible power to the output from either a primary AC or a secondary DC source. The power switches coupling both primary and secondary source voltages to the power transformers are driven at identical duty cycles by a common regulation control. Differing transformation ratios between primary and secondary sources of power define different operational ranges and determine flow of power based on the magnitude of the primary source of power.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.