Capacitive discharge energy harvesting converter
US7781943B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Jan 23, 2008 |
| Grant date | Aug 24, 2010 |
| Priority date | — |
| Expiry date | Jan 23, 2028 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02N2/181
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
An energy harvesting circuit includes a device for converting mechanical energy into electrical energy, a solid state voltage dependent switch, and an inductor. The piezoelectric device, the solid state voltage dependent switch, and the inductor are all connected in series. The solid state voltage dependent switch has a first threshold The solid state voltage dependent switch remains open until voltage applied across the solid state voltage dependent switch by the device reaches the first threshold. When the voltage applied across the solid state voltage dependent switch reaches the first threshold the solid state voltage dependent switch closes so charge from the device flows through the switch and through the inductor.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.