Drive circuit for piezoelectric stack
US4595854A · kind A · utility
14Cited by
8References
19Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Apr 25, 1984 |
| Grant date | Jun 17, 1986 |
| Priority date | — |
| Expiry date | Apr 25, 2004 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02N2/067
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A drive circuit for a piezoelectric stack which drives a desired mechanical object such as a printing head of a dot matrix printer or an ink jet printer. A winding is connected in series with one of electrodes of the piezoelectric stack so that an excitation voltage is applied to the stack via the winding. An excessive charge current at each time of drive and an excessive discharge current at each time of recovery are prevented.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.