HK76087A - Electro-acoustic transducers - Google Patents
Electro-acoustic transducersInfo
- Publication number
- HK76087A HK76087A HK76087A HK76087A HK76087A HK 76087 A HK76087 A HK 76087A HK 76087 A HK76087 A HK 76087A HK 76087 A HK76087 A HK 76087A HK 76087 A HK76087 A HK 76087A
- Authority
- HK
- Hong Kong
- Prior art keywords
- electro
- acoustic transducers
- 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 |
---|---|
HK76087A true HK76087A (en) | 1987-10-23 |
Family
ID=10507909
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
HK76087A HK76087A (en) | 1979-09-18 | 1987-10-15 | Electro-acoustic transducers |
Country Status (3)
Country | Link |
---|---|
BR (1) | BR8005910A (en) |
GB (1) | GB2059715B (en) |
HK (1) | HK76087A (en) |
Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2542552B1 (en) * | 1983-03-07 | 1986-04-11 | Thomson Csf | ELECTROACOUSTIC TRANSDUCER WITH PIEZOELECTRIC DIAPHRAGM |
DE19541197A1 (en) * | 1995-11-04 | 1997-05-07 | Nokia Deutschland Gmbh | Arrangement for the emission of sound waves |
DK172871B1 (en) * | 1997-08-22 | 1999-08-23 | Danfoss As | An ultrasonic transducer |
JP4206599B2 (en) * | 2000-02-29 | 2009-01-14 | 康浩 蜂須賀 | Microphone |
-
1979
- 1979-09-18 GB GB7932324A patent/GB2059715B/en not_active Expired
-
1980
- 1980-09-16 BR BR8005910A patent/BR8005910A/en unknown
-
1987
- 1987-10-15 HK HK76087A patent/HK76087A/en unknown
Also Published As
Publication number | Publication date |
---|---|
GB2059715A (en) | 1981-04-23 |
GB2059715B (en) | 1984-02-01 |
BR8005910A (en) | 1981-03-31 |
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