GB1405789A - Electroacoustic transducer - Google Patents
Electroacoustic transducerInfo
- Publication number
- GB1405789A GB1405789A GB5063772A GB5063772A GB1405789A GB 1405789 A GB1405789 A GB 1405789A GB 5063772 A GB5063772 A GB 5063772A GB 5063772 A GB5063772 A GB 5063772A GB 1405789 A GB1405789 A GB 1405789A
- Authority
- GB
- United Kingdom
- Prior art keywords
- diaphragm
- electrode
- electrodes
- electret
- fixed electrode
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
- 229920000642 polymer Polymers 0.000 abstract 5
- 239000011347 resin Substances 0.000 abstract 3
- 229920005989 resin Polymers 0.000 abstract 3
- BQCIDUSAKPWEOX-UHFFFAOYSA-N 1,1-Difluoroethene Chemical compound FC(F)=C BQCIDUSAKPWEOX-UHFFFAOYSA-N 0.000 abstract 2
- 230000000694 effects Effects 0.000 abstract 2
- OEPOKWHJYJXUGD-UHFFFAOYSA-N 2-(3-phenylmethoxyphenyl)-1,3-thiazole-4-carbaldehyde Chemical compound O=CC1=CSC(C=2C=C(OCC=3C=CC=CC=3)C=CC=2)=N1 OEPOKWHJYJXUGD-UHFFFAOYSA-N 0.000 abstract 1
- 239000002033 PVDF binder Substances 0.000 abstract 1
- 229920001328 Polyvinylidene chloride Polymers 0.000 abstract 1
- BZHJMEDXRYGGRV-UHFFFAOYSA-N Vinyl chloride Chemical compound ClC=C BZHJMEDXRYGGRV-UHFFFAOYSA-N 0.000 abstract 1
- 239000000654 additive Substances 0.000 abstract 1
- 230000000996 additive effect Effects 0.000 abstract 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 abstract 1
- 229910052782 aluminium Inorganic materials 0.000 abstract 1
- 239000004411 aluminium Substances 0.000 abstract 1
- 239000003990 capacitor Substances 0.000 abstract 1
- 230000008602 contraction Effects 0.000 abstract 1
- 238000001816 cooling Methods 0.000 abstract 1
- 229920001577 copolymer Polymers 0.000 abstract 1
- XUCNUKMRBVNAPB-UHFFFAOYSA-N fluoroethene Chemical compound FC=C XUCNUKMRBVNAPB-UHFFFAOYSA-N 0.000 abstract 1
- 239000000178 monomer Substances 0.000 abstract 1
- 230000010287 polarization Effects 0.000 abstract 1
- 229920003229 poly(methyl methacrylate) Polymers 0.000 abstract 1
- 229920006254 polymer film Polymers 0.000 abstract 1
- 239000004926 polymethyl methacrylate Substances 0.000 abstract 1
- 239000005033 polyvinylidene chloride Substances 0.000 abstract 1
- 229920002981 polyvinylidene fluoride Polymers 0.000 abstract 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
- 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
- H04R19/00—Electrostatic transducers
- H04R19/01—Electrostatic transducers characterised by the use of electrets
- H04R19/013—Electrostatic transducers characterised by the use of electrets for loudspeakers
-
- 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
- Y10S310/00—Electrical generator or motor structure
- Y10S310/80—Piezoelectric polymers, e.g. PVDF
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP46087854A JPS5221364B2 (xx) | 1971-11-04 | 1971-11-04 |
Publications (1)
Publication Number | Publication Date |
---|---|
GB1405789A true GB1405789A (en) | 1975-09-10 |
Family
ID=13926458
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB5063772A Expired GB1405789A (en) | 1971-11-04 | 1972-11-02 | Electroacoustic transducer |
Country Status (6)
Country | Link |
---|---|
US (1) | US3894198A (xx) |
JP (1) | JPS5221364B2 (xx) |
CA (1) | CA989972A (xx) |
FR (1) | FR2158571B1 (xx) |
GB (1) | GB1405789A (xx) |
NL (1) | NL7214888A (xx) |
Families Citing this family (51)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2199430A5 (xx) * | 1972-09-08 | 1974-04-05 | Anvar | |
JPS5745760Y2 (xx) * | 1974-02-18 | 1982-10-08 | ||
JPS50117412A (xx) * | 1974-02-18 | 1975-09-13 | ||
US3980838A (en) * | 1974-02-20 | 1976-09-14 | Tokyo Shibaura Electric Co., Ltd. | Plural electret electroacoustic transducer |
JPS5215972B2 (xx) * | 1974-02-28 | 1977-05-06 | ||
US3970862A (en) * | 1974-06-25 | 1976-07-20 | The United States Of America As Represented By The Secretary Of The Navy | Polymeric sensor of vibration and dynamic pressure |
JPS51101927U (xx) * | 1975-02-14 | 1976-08-16 | ||
JPS5215319A (en) * | 1975-07-25 | 1977-02-04 | Matsushita Electric Ind Co Ltd | Electric sound convertor |
GB1520118A (en) * | 1975-08-11 | 1978-08-02 | Rank Organisation Ltd | Transducers |
US4146800A (en) * | 1975-10-08 | 1979-03-27 | Gregory Stephen E | Apparatus and method of generating electricity from wind energy |
US4170185A (en) * | 1978-01-09 | 1979-10-09 | Lectret S.A. | Preventing marine fouling |
US4207442A (en) * | 1978-05-15 | 1980-06-10 | Freeman Miller L | Driver circuit for electrostatic transducers |
JPS5512508A (en) * | 1978-07-10 | 1980-01-29 | Kureha Chem Ind Co Ltd | Information recording sheet |
US4331840A (en) * | 1980-02-22 | 1982-05-25 | Lectret S.A. | Electret transducer with tapered acoustic chamber |
GB2079054B (en) * | 1980-06-30 | 1984-02-22 | Tokyo Shibaura Electric Co | Electret device |
US4440027A (en) * | 1982-05-26 | 1984-04-03 | Ford Motor Company | Velocity and mass air flow sensor |
DE3437488A1 (de) * | 1984-10-12 | 1986-04-17 | Richard Wolf Gmbh, 7134 Knittlingen | Schallsender |
US4868447A (en) * | 1987-09-11 | 1989-09-19 | Cornell Research Foundation, Inc. | Piezoelectric polymer laminates for torsional and bending modal control |
US4985926A (en) * | 1988-02-29 | 1991-01-15 | Motorola, Inc. | High impedance piezoelectric transducer |
US5558298A (en) * | 1994-12-05 | 1996-09-24 | General Electric Company | Active noise control of aircraft engine discrete tonal noise |
US5949892A (en) * | 1995-12-07 | 1999-09-07 | Advanced Micro Devices, Inc. | Method of and apparatus for dynamically controlling operating characteristics of a microphone |
US6140740A (en) * | 1997-12-30 | 2000-10-31 | Remon Medical Technologies, Ltd. | Piezoelectric transducer |
US20030036746A1 (en) | 2001-08-16 | 2003-02-20 | Avi Penner | Devices for intrabody delivery of molecules and systems and methods utilizing same |
US6760455B2 (en) * | 2000-07-13 | 2004-07-06 | American Technology Corporation | Electrostatic loudspeaker with a distributed filter |
AT410498B (de) * | 2001-02-20 | 2003-05-26 | Akg Acoustics Gmbh | Elektroakustische kapsel |
US6978032B2 (en) * | 2001-11-29 | 2005-12-20 | Matsushita Electric Industrial Co., Ltd. | Piezoelectric speaker |
GB0204572D0 (en) * | 2002-02-27 | 2002-04-10 | Univ Warwick | Non contacting air-coupled ultrasonic inspection system for food and drinks |
EP2289392B1 (en) * | 2004-11-24 | 2012-05-09 | Remon Medical Technologies Ltd. | Implantable medical device with integrated acoustic transducer |
US7522962B1 (en) | 2004-12-03 | 2009-04-21 | Remon Medical Technologies, Ltd | Implantable medical device with integrated acoustic transducer |
JP4814316B2 (ja) * | 2005-05-02 | 2011-11-16 | エプコス アーゲー | 統合減結合コンデンサを有する容量性rf−mems装置 |
US20080212807A1 (en) * | 2005-06-08 | 2008-09-04 | General Mems Corporation | Micromachined Acoustic Transducers |
US7615012B2 (en) * | 2005-08-26 | 2009-11-10 | Cardiac Pacemakers, Inc. | Broadband acoustic sensor for an implantable medical device |
US7570998B2 (en) * | 2005-08-26 | 2009-08-04 | Cardiac Pacemakers, Inc. | Acoustic communication transducer in implantable medical device header |
JP2008042869A (ja) * | 2005-10-05 | 2008-02-21 | Seiko Epson Corp | 静電型超音波トランスデューサ、超音波スピーカ、音声信号再生方法、超指向性音響システム及び表示装置 |
US7912548B2 (en) * | 2006-07-21 | 2011-03-22 | Cardiac Pacemakers, Inc. | Resonant structures for implantable devices |
US7949396B2 (en) * | 2006-07-21 | 2011-05-24 | Cardiac Pacemakers, Inc. | Ultrasonic transducer for a metallic cavity implated medical device |
US8825161B1 (en) | 2007-05-17 | 2014-09-02 | Cardiac Pacemakers, Inc. | Acoustic transducer for an implantable medical device |
US7634318B2 (en) | 2007-06-14 | 2009-12-15 | Cardiac Pacemakers, Inc. | Multi-element acoustic recharging system |
TWI343756B (en) * | 2009-08-10 | 2011-06-11 | Ind Tech Res Inst | Flat loudspeaker structure |
US20100103115A1 (en) * | 2008-10-24 | 2010-04-29 | Sony Ericsson Mobile Communications Ab | Display arrangement and electronic device |
CN101754078A (zh) * | 2008-12-12 | 2010-06-23 | 志丰电子股份有限公司 | 驻极体背极式双振膜电声致动器及其制法 |
JP5810328B2 (ja) * | 2010-03-29 | 2015-11-11 | パナソニックIpマネジメント株式会社 | 圧電型音響変換器 |
JP5195895B2 (ja) * | 2010-12-27 | 2013-05-15 | 株式会社村田製作所 | 圧電発音部品 |
CN102651836A (zh) * | 2011-02-28 | 2012-08-29 | 千如电机工业股份有限公司 | 用于平板型电声致动器的音讯驱动器 |
EP2512029A1 (en) * | 2011-04-11 | 2012-10-17 | ABC Taiwan Electronics Corp. | Audio signal driver for flat sound generator |
DE102012221833A1 (de) * | 2012-11-29 | 2014-06-05 | Robert Bosch Gmbh | Wandler mit zumindest einer Elektrode eines ersten Typs, einer Elektrode eines zweiten Typs und zumindest einem Ferroelektret |
JP6278619B2 (ja) * | 2013-06-14 | 2018-02-14 | 古河電気工業株式会社 | 振動発電体 |
DE102013222231A1 (de) | 2013-10-31 | 2015-04-30 | Sennheiser Electronic Gmbh & Co. Kg | Hörer |
KR20160068059A (ko) | 2014-12-04 | 2016-06-15 | 삼성디스플레이 주식회사 | 다공성 압전 박막을 포함하는 압전 소자 |
US10120449B2 (en) | 2015-08-25 | 2018-11-06 | Immersion Corporation | Parallel plate actuator |
KR101703608B1 (ko) * | 2015-08-28 | 2017-02-07 | 현대자동차 주식회사 | 탈착형 마이크로폰 및 그 제조 방법 |
Family Cites Families (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE524082C (de) * | 1928-09-07 | 1931-05-01 | Siemens & Halske Akt Ges | Lautsprecher mit mehreren nach verschiedenartigen Prinzipien arbeitenden elektrischen Antriebssystemen |
US2478223A (en) * | 1946-03-01 | 1949-08-09 | Clarkstan Corp | Electrostrictive translator |
JPS4815867B1 (xx) * | 1969-08-28 | 1973-05-17 | ||
US3646413A (en) * | 1970-09-25 | 1972-02-29 | Avco Corp | Piezoelectric-driven variable capacitor |
-
1971
- 1971-11-04 JP JP46087854A patent/JPS5221364B2/ja not_active Expired
-
1972
- 1972-10-31 CA CA155,743A patent/CA989972A/en not_active Expired
- 1972-11-02 GB GB5063772A patent/GB1405789A/en not_active Expired
- 1972-11-03 NL NL7214888A patent/NL7214888A/xx not_active Application Discontinuation
- 1972-11-06 FR FR7239244A patent/FR2158571B1/fr not_active Expired
- 1972-11-06 US US303894A patent/US3894198A/en not_active Expired - Lifetime
Also Published As
Publication number | Publication date |
---|---|
CA989972A (en) | 1976-05-25 |
NL7214888A (xx) | 1973-05-08 |
DE2253721A1 (de) | 1973-05-24 |
JPS4853713A (xx) | 1973-07-28 |
JPS5221364B2 (xx) | 1977-06-10 |
US3894198A (en) | 1975-07-08 |
DE2253721B2 (de) | 1976-02-12 |
FR2158571A1 (xx) | 1973-06-15 |
FR2158571B1 (xx) | 1978-11-03 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
PS | Patent sealed [section 19, patents act 1949] | ||
PCNP | Patent ceased through non-payment of renewal fee |