Driver circuit for piezoelectric transducer and electroluminescent lamp
US4982141A · kind A · utility
12Cited by
7References
12Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jul 24, 1989 |
| Grant date | Jan 1, 1991 |
| Priority date | — |
| Expiry date | Jul 24, 2009 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02B20/30
- WIPO fieldControl
- WIPO sectorInstruments
Abstract
A driving circuit including a single transformer drives a piezoelectric transducer and an electroluminescent lamp. The circuit is coupled to the driving circuit for limiting the peak current through the transformer.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.