NO312800B1 - Elektroakustisk transducer - Google Patents
Elektroakustisk transducer Download PDFInfo
- Publication number
- NO312800B1 NO312800B1 NO19985719A NO985719A NO312800B1 NO 312800 B1 NO312800 B1 NO 312800B1 NO 19985719 A NO19985719 A NO 19985719A NO 985719 A NO985719 A NO 985719A NO 312800 B1 NO312800 B1 NO 312800B1
- Authority
- NO
- Norway
- Prior art keywords
- transducer
- inductance
- switches
- acoustic
- acoustic element
- Prior art date
Links
- 239000003990 capacitor Substances 0.000 claims description 17
- 239000012528 membrane Substances 0.000 claims description 16
- 230000000694 effects Effects 0.000 claims description 4
- 230000005236 sound signal Effects 0.000 claims description 3
- 239000002184 metal Substances 0.000 claims description 2
- 238000004146 energy storage Methods 0.000 abstract description 2
- 238000007599 discharging Methods 0.000 abstract 1
- 238000010586 diagram Methods 0.000 description 8
- 230000001276 controlling effect Effects 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000011159 matrix material Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R19/00—Electrostatic transducers
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10S367/00—Communications, electrical: acoustic wave systems and devices
- Y10S367/903—Transmit-receive circuitry
Landscapes
- Engineering & Computer Science (AREA)
- Acoustics & Sound (AREA)
- Signal Processing (AREA)
- Physics & Mathematics (AREA)
- Audible-Bandwidth Dynamoelectric Transducers Other Than Pickups (AREA)
- Circuit For Audible Band Transducer (AREA)
- Transducers For Ultrasonic Waves (AREA)
- Piezo-Electric Transducers For Audible Bands (AREA)
- Diaphragms For Electromechanical Transducers (AREA)
- Oscillators With Electromechanical Resonators (AREA)
- Measuring Fluid Pressure (AREA)
- Measurement Of Velocity Or Position Using Acoustic Or Ultrasonic Waves (AREA)
- Electrostatic, Electromagnetic, Magneto- Strictive, And Variable-Resistance Transducers (AREA)
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FI962386A FI962386A0 (fi) | 1996-06-07 | 1996-06-07 | Elektroakustisk omvandlare |
| PCT/FI1997/000354 WO1997048253A1 (en) | 1996-06-07 | 1997-06-06 | Electroacoustic transducer |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| NO985719D0 NO985719D0 (no) | 1998-12-07 |
| NO985719L NO985719L (no) | 1999-02-05 |
| NO312800B1 true NO312800B1 (no) | 2002-07-01 |
Family
ID=8546167
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| NO19985719A NO312800B1 (no) | 1996-06-07 | 1998-12-07 | Elektroakustisk transducer |
Country Status (13)
| Country | Link |
|---|---|
| US (1) | US6570818B1 (da) |
| EP (1) | EP0903058B1 (da) |
| JP (1) | JP3632978B2 (da) |
| AT (1) | ATE218027T1 (da) |
| AU (1) | AU3035097A (da) |
| CA (1) | CA2257447A1 (da) |
| DE (1) | DE69712755T2 (da) |
| DK (1) | DK0903058T3 (da) |
| ES (1) | ES2175412T3 (da) |
| FI (1) | FI962386A0 (da) |
| NO (1) | NO312800B1 (da) |
| PT (1) | PT903058E (da) |
| WO (1) | WO1997048253A1 (da) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| AU2001277864A1 (en) * | 2000-07-11 | 2002-01-21 | American Technology Corporation | Power amplification for parametric loudspeakers |
| FI118622B (fi) | 2002-01-17 | 2008-01-15 | Band Oy B | Soittimen muunnin ja menetelmä sen valmistamiseksi |
| JP4116930B2 (ja) * | 2003-06-03 | 2008-07-09 | 古野電気株式会社 | 超音波送信装置、超音波送受信装置、および探知装置 |
| US9794703B2 (en) | 2014-06-27 | 2017-10-17 | Cochlear Limited | Low-power active bone conduction devices |
| JP6528391B2 (ja) * | 2014-11-25 | 2019-06-12 | セイコーエプソン株式会社 | 液体吐出装置、ヘッドユニット、容量性負荷駆動用集積回路装置および容量性負荷駆動回路 |
Family Cites Families (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3786495A (en) | 1972-05-17 | 1974-01-15 | Ncr | Stored charge transducer |
| DE2357499C3 (de) * | 1973-11-17 | 1979-03-01 | Standard Elektrik Lorenz Ag, 7000 Stuttgart | Ultraschallsender zur Fernbedienung von Rundfunk- und Fernsehempfängern |
| GB1499575A (en) | 1974-09-11 | 1978-02-01 | Seiko Instr & Electronics | Electronic buzzers |
| NL7802688A (nl) | 1978-03-13 | 1979-09-17 | Philips Nv | Inrichting voor het omzetten van akoestische in elektrische trillingen en omgekeerd, voor- zien van tenminste een kondensator elektreet- element aangesloten op een elektronische schakeling. |
| US4207442A (en) * | 1978-05-15 | 1980-06-10 | Freeman Miller L | Driver circuit for electrostatic transducers |
| DE3048632A1 (de) | 1980-12-23 | 1982-07-22 | Siemens AG, 1000 Berlin und 8000 München | Schaltungsanordnung fuer piezoelektrisches stellglied und dergleichen |
| JPH083528B2 (ja) * | 1986-07-15 | 1996-01-17 | 株式会社日立製作所 | 超音波装置 |
| US4817066A (en) * | 1985-10-09 | 1989-03-28 | Hitachi, Ltd | Transmitter/receiver for ultrasonic diagnostic system |
| JPS62155698A (ja) | 1985-12-27 | 1987-07-10 | Nippon Atsudenki Kk | 容量性拡声器の省電力駆動装置 |
| US5161128A (en) | 1990-11-30 | 1992-11-03 | Ultrasonic Arrays, Inc. | Capacitive transducer system and method |
| GB2296365B (en) | 1993-08-16 | 1997-01-15 | Fulleon Synchrobell Ltd | Sounder |
-
1996
- 1996-06-07 FI FI962386A patent/FI962386A0/fi not_active Application Discontinuation
-
1997
- 1997-06-06 AU AU30350/97A patent/AU3035097A/en not_active Abandoned
- 1997-06-06 JP JP50124598A patent/JP3632978B2/ja not_active Expired - Lifetime
- 1997-06-06 WO PCT/FI1997/000354 patent/WO1997048253A1/en active IP Right Grant
- 1997-06-06 DE DE69712755T patent/DE69712755T2/de not_active Expired - Lifetime
- 1997-06-06 ES ES97925087T patent/ES2175412T3/es not_active Expired - Lifetime
- 1997-06-06 AT AT97925087T patent/ATE218027T1/de not_active IP Right Cessation
- 1997-06-06 EP EP97925087A patent/EP0903058B1/en not_active Expired - Lifetime
- 1997-06-06 DK DK97925087T patent/DK0903058T3/da active
- 1997-06-06 US US09/202,002 patent/US6570818B1/en not_active Expired - Lifetime
- 1997-06-06 PT PT97925087T patent/PT903058E/pt unknown
- 1997-06-06 CA CA002257447A patent/CA2257447A1/en not_active Abandoned
-
1998
- 1998-12-07 NO NO19985719A patent/NO312800B1/no unknown
Also Published As
| Publication number | Publication date |
|---|---|
| NO985719L (no) | 1999-02-05 |
| JP2000512104A (ja) | 2000-09-12 |
| AU3035097A (en) | 1998-01-07 |
| DE69712755T2 (de) | 2002-11-21 |
| EP0903058A1 (en) | 1999-03-24 |
| JP3632978B2 (ja) | 2005-03-30 |
| US6570818B1 (en) | 2003-05-27 |
| ES2175412T3 (es) | 2002-11-16 |
| CA2257447A1 (en) | 1997-12-18 |
| PT903058E (pt) | 2002-09-30 |
| FI962386A0 (fi) | 1996-06-07 |
| ATE218027T1 (de) | 2002-06-15 |
| EP0903058B1 (en) | 2002-05-22 |
| WO1997048253A1 (en) | 1997-12-18 |
| DE69712755D1 (de) | 2002-06-27 |
| DK0903058T3 (da) | 2002-08-26 |
| NO985719D0 (no) | 1998-12-07 |
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