BR8005910A - Transdutores eletroacusticos - Google Patents
Transdutores eletroacusticosInfo
- Publication number
- BR8005910A BR8005910A BR8005910A BR8005910A BR8005910A BR 8005910 A BR8005910 A BR 8005910A BR 8005910 A BR8005910 A BR 8005910A BR 8005910 A BR8005910 A BR 8005910A BR 8005910 A BR8005910 A BR 8005910A
- Authority
- BR
- Brazil
- Prior art keywords
- acoustic transducers
- electric acoustic
- electric
- transducers
- acoustic
- Prior art date
Links
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R17/00—Piezoelectric transducers; Electrostrictive transducers
- H04R17/005—Piezoelectric transducers; Electrostrictive transducers using a piezoelectric polymer
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R1/00—Details of transducers, loudspeakers or microphones
- H04R1/06—Arranging circuit leads; Relieving strain on circuit leads
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R17/00—Piezoelectric transducers; Electrostrictive transducers
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R2499/00—Aspects covered by H04R or H04S not otherwise provided for in their subgroups
- H04R2499/10—General applications
- H04R2499/11—Transducers incorporated or for use in hand-held devices, e.g. mobile phones, PDA's, camera's
Landscapes
- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Acoustics & Sound (AREA)
- Signal Processing (AREA)
- Telephone Set Structure (AREA)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB7932324A GB2059715B (en) | 1979-09-18 | 1979-09-18 | Electro acoustic transducers |
Publications (1)
Publication Number | Publication Date |
---|---|
BR8005910A true BR8005910A (pt) | 1981-03-31 |
Family
ID=10507909
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
BR8005910A BR8005910A (pt) | 1979-09-18 | 1980-09-16 | Transdutores eletroacusticos |
Country Status (3)
Country | Link |
---|---|
BR (1) | BR8005910A (pt) |
GB (1) | GB2059715B (pt) |
HK (1) | HK76087A (pt) |
Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2542552B1 (fr) * | 1983-03-07 | 1986-04-11 | Thomson Csf | Transducteur electroacoustique a diaphragme piezo-electrique |
DE19541197A1 (de) * | 1995-11-04 | 1997-05-07 | Nokia Deutschland Gmbh | Anordnung zur Abstrahlung von Schallwellen |
DK172871B1 (da) * | 1997-08-22 | 1999-08-23 | Danfoss As | Ultralydstransducer |
JP4206599B2 (ja) * | 2000-02-29 | 2009-01-14 | 康浩 蜂須賀 | マイクロホン |
-
1979
- 1979-09-18 GB GB7932324A patent/GB2059715B/en not_active Expired
-
1980
- 1980-09-16 BR BR8005910A patent/BR8005910A/pt unknown
-
1987
- 1987-10-15 HK HK76087A patent/HK76087A/xx unknown
Also Published As
Publication number | Publication date |
---|---|
GB2059715B (en) | 1984-02-01 |
GB2059715A (en) | 1981-04-23 |
HK76087A (en) | 1987-10-23 |
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