Piezoelectric/electrostrictive element driving circuit
US6528925B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Aug 10, 2000 |
| Grant date | Mar 4, 2003 |
| Priority date | — |
| Expiry date | Aug 10, 2020 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH10N30/802
Abstract
A first charging circuit and a third charging circuit are provided as first-step charging circuits to first and second piezoelectric/electrostrictive elements, and a second charging circuit and a fourth charging circuit are provided as next-step charging circuits. Moreover, the first-step charging circuits of the piezoelectric/electrostrictive elements serve also as first-step discharging circuits, and a first discharging circuit and a second discharging circuit are provided as next-step discharging circuits. Resistances as well as coils intervene in the first charging circuit and the third charging circuit in a series with the piezoelectric/electrostrictive elements.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.