Soft starting driver for piezoelectric device
US8232791B2 · kind B2 · utility
1Cited by
13References
7Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Oct 5, 2009 |
| Grant date | Jul 31, 2012 |
| Priority date | — |
| Expiry date | Sep 1, 2030 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02N2/0075
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A driver includes a boost converter, a pulse width modulator controlling the boost converter, and a timer controlling the pulse width modulator. The timer, such as a digital counter, causes the pulse width modulator to produce narrow pulses unless or until the end of a period is reached, at which point the pulse width modulator is not controlled by the timer.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.