Acoustic transducer with improved electret assembly
US4063050A · kind A · utility
36Cited by
0References
10Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Dec 30, 1976 |
| Grant date | Dec 13, 1977 |
| Priority date | — |
| Expiry date | Dec 30, 1996 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04R25/604
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
The present invention relates to an acoustic transducer including an improved electret assembly mounted in an improved case and having an electronic amplifier circuit comprising FET transistors. The electronic circuit further includes means for protecting the FET transistors against current surges.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.