Battery based portable power supply
US9166422B2 · kind B2 · utility
20Cited by
11References
7Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Feb 26, 2008 |
| Grant date | Oct 20, 2015 |
| Priority date | — |
| Expiry date | Feb 6, 2033 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02J2207/20
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A portable power supply includes a housing, and power circuitry providing an output AC waveform having a first positive voltage step level, a second higher positive voltage step level, a third lower positive voltage step level, a fourth negative voltage step level, a fifth higher negative voltage step level, and a sixth lower negative voltage step level.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.