Self contained power source
US8384356B2 · kind B2 · utility
Inventor
Key dates
| Filing date | Sep 25, 2009 |
| Grant date | Feb 26, 2013 |
| Priority date | — |
| Expiry date | Feb 6, 2031 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02J7/35
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A self-contained power source to charge a battery and/or power a load is provided. The power source does not utilize a connection to an external power supply, such as AC mains and/or an AC to DC converter. In one embodiment, the self-contained power source includes an ultra low voltage power generator, such as 0.3V of a single solar cell, or even lower to slightly above the GND potential, that provides a voltage to a rechargeable battery, a load or both. A voltage converter with boost topology is used to supply a voltage comparable to the voltage of the rechargeable battery. A first push circuit containing a zero threshold voltage switch, a MUX circuit and a one-pulse-control block is utilized to ensure initial and continued operation of the voltage converter.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.