Single crystal piezoelectric transformer
US6674222B2 · kind B2 · utility
4Cited by
22References
7Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Apr 5, 2002 |
| Grant date | Jan 6, 2004 |
| Priority date | — |
| Expiry date | Apr 5, 2022 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF02P3/12
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
The present invention comprises a piezoelectric transformer having substantially improved performance. The piezoelectric element is composed of a single crystal of a relaxor ferroelectric piezoelectric material. This element is coupled to input and output electrodes. The element vibrates mechanically in response to an input signal, which causes an output signal to be generated at the output electrodes. Improved power transmission is observed despite the reduced mechanical Q of the single crystal material, because the coupling and dielectric strength of the material are improved relative to polycrystals.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.