Piezoelectric power generation module and remote controller
US9882511B2 · kind B2 · utility
2Cited by
5References
17Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jun 30, 2016 |
| Grant date | Jan 30, 2018 |
| Priority date | — |
| Expiry date | Jun 30, 2036 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH10N30/304
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A piezoelectric device is connected in parallel with a diode, and outputs a power generation voltage when depressed. When the power generation voltage exceeds a first threshold voltage, a load switch control circuit makes a load switch be conductive, and when the generated voltage becomes lower than a second threshold voltage, the load switch is cut off. Further, when depression is released, the piezoelectric device is discharged by the diode such that the amount of charge remaining in the piezoelectric device becomes zero.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.