JPS5032919A - - Google Patents
Info
- Publication number
- JPS5032919A JPS5032919A JP48082821A JP8282173A JPS5032919A JP S5032919 A JPS5032919 A JP S5032919A JP 48082821 A JP48082821 A JP 48082821A JP 8282173 A JP8282173 A JP 8282173A JP S5032919 A JPS5032919 A JP S5032919A
- Authority
- JP
- Japan
- 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.)
- Granted
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
- H04R19/00—Electrostatic transducers
- H04R19/01—Electrostatic transducers characterised by the use of electrets
Landscapes
- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Acoustics & Sound (AREA)
- Signal Processing (AREA)
- Electrostatic, Electromagnetic, Magneto- Strictive, And Variable-Resistance Transducers (AREA)
- Diaphragms For Electromechanical Transducers (AREA)
- Superconductors And Manufacturing Methods Therefor (AREA)
Priority Applications (10)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP8282173A JPS5419172B2 (ja) | 1973-07-23 | 1973-07-23 | |
GB3169374A GB1472778A (en) | 1973-07-23 | 1974-07-17 | Electrostatic transducers |
NL7409685A NL7409685A (nl) | 1973-07-23 | 1974-07-17 | Elektrostatische microfoon of telefoon. |
US05/489,400 US3942029A (en) | 1973-07-23 | 1974-07-17 | Electrostatic transducer |
AU71416/74A AU486726B2 (en) | 1973-07-23 | 1974-07-19 | Electrostatic transducer |
CA205,339A CA1013068A (en) | 1973-07-23 | 1974-07-22 | Electrostatic transducer |
DE2435430A DE2435430C2 (de) | 1973-07-23 | 1974-07-23 | Elektrostatischer Wandler |
FR7425571A FR2239072B1 (ja) | 1973-07-23 | 1974-07-23 | |
SE7409546A SE395102B (sv) | 1973-07-23 | 1974-07-23 | Elektrostatisk omvandlare, innefattande ett elektretmembran |
NO742686A NO140847C (no) | 1973-07-23 | 1974-07-23 | Elektrostatisk omformer. |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP8282173A JPS5419172B2 (ja) | 1973-07-23 | 1973-07-23 |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS5032919A true JPS5032919A (ja) | 1975-03-29 |
JPS5419172B2 JPS5419172B2 (ja) | 1979-07-13 |
Family
ID=13785053
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP8282173A Expired JPS5419172B2 (ja) | 1973-07-23 | 1973-07-23 |
Country Status (9)
Country | Link |
---|---|
US (1) | US3942029A (ja) |
JP (1) | JPS5419172B2 (ja) |
CA (1) | CA1013068A (ja) |
DE (1) | DE2435430C2 (ja) |
FR (1) | FR2239072B1 (ja) |
GB (1) | GB1472778A (ja) |
NL (1) | NL7409685A (ja) |
NO (1) | NO140847C (ja) |
SE (1) | SE395102B (ja) |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS51142334U (ja) * | 1975-05-12 | 1976-11-16 | ||
JPS5569027U (ja) * | 1978-11-06 | 1980-05-13 | ||
WO2012008460A1 (ja) * | 2010-07-15 | 2012-01-19 | ヤマハ株式会社 | 静電型スピーカおよび静電型スピーカの製造方法 |
US8983099B2 (en) | 2010-07-12 | 2015-03-17 | Yamaha Corporation | Electrostatic loudspeaker |
Families Citing this family (43)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5756160B2 (ja) * | 1974-08-27 | 1982-11-27 | ||
FR2294535A1 (fr) * | 1974-12-10 | 1976-07-09 | Lewiner Jacques | Perfectionnements aux dispositifs de commande du genre des relais |
FR2296297A1 (fr) * | 1974-12-27 | 1976-07-23 | Thomson Csf | Dispositif commutateur a commande electrique de deplacement |
FR2386898A2 (fr) * | 1977-04-05 | 1978-11-03 | Anvar | Perfectionnements aux dispositifs de commande du genre des relais |
US4224540A (en) * | 1978-08-10 | 1980-09-23 | Shigeo Okubo | Displacement current sensor |
JPS5543326A (en) * | 1978-09-21 | 1980-03-27 | Tokai:Kk | Plastic gas lighter |
CA1107382A (en) * | 1978-11-03 | 1981-08-18 | Beverley W. Gumb | Electret microphone with simplified electrical connections by printed circuit board mounting |
CA1165859A (en) * | 1981-10-19 | 1984-04-17 | Guy J. Chaput | Electret microphone shield |
US4509193A (en) * | 1983-07-11 | 1985-04-02 | Industrial Research Products, Inc. | Miniature acoustical transducer with filter/regulator power supply circuit |
US4703509A (en) * | 1985-06-19 | 1987-10-27 | Zavod Za Elektronni Preobrazuvatelni Elementi | Electrostatic acoustic converter with stationary electrode having a progressively increasing surface resistance |
WO1993001691A1 (en) * | 1991-07-11 | 1993-01-21 | Driver Michael L | Electrolytic loudspeaker assembly |
US5272758A (en) * | 1991-09-09 | 1993-12-21 | Hosiden Corporation | Electret condenser microphone unit |
EP0825585B1 (de) * | 1996-08-21 | 2005-07-20 | Volkswagen Aktiengesellschaft | Vorrichtung zur Bestimmung des Abstandes von Objekten |
US5854846A (en) * | 1996-09-06 | 1998-12-29 | Northrop Grumman Corporation | Wafer fabricated electroacoustic transducer |
US5862239A (en) * | 1997-04-03 | 1999-01-19 | Lucent Technologies Inc. | Directional capacitor microphone system |
FR2790635B1 (fr) * | 1999-03-05 | 2001-04-13 | France Etat | Dispositif triboelectrique |
US6127918A (en) * | 1999-05-26 | 2000-10-03 | Lin; Kuang-Yao | Buzzer with a sound film and equalizing or whirlpool sound mechanism |
US7095864B1 (en) | 2000-09-02 | 2006-08-22 | University Of Warwick | Electrostatic audio loudspeakers |
US6934402B2 (en) * | 2001-01-26 | 2005-08-23 | American Technology Corporation | Planar-magnetic speakers with secondary magnetic structure |
JP2002345092A (ja) * | 2001-05-15 | 2002-11-29 | Citizen Electronics Co Ltd | コンデンサマイクロホンの製造方法 |
JP2002345063A (ja) * | 2001-05-17 | 2002-11-29 | Citizen Electronics Co Ltd | マイクロホンとその製造方法 |
JP5103873B2 (ja) * | 2005-12-07 | 2012-12-19 | セイコーエプソン株式会社 | 静電型超音波トランスデューサの駆動制御方法、静電型超音波トランスデューサ、これを用いた超音波スピーカ、音声信号再生方法、超指向性音響システム及び表示装置 |
GB0600014D0 (en) | 2006-01-03 | 2006-02-08 | Warwick Audio Technologies Ltd | Electrostatic loudspeakers |
US7545138B2 (en) * | 2006-07-06 | 2009-06-09 | Schweitzer Engineering Laboratories, Inc. | Precision, temperature-compensated, shielded current measurement device |
US8559660B2 (en) * | 2007-07-12 | 2013-10-15 | Industrial Technology Research Institute | Electrostatic electroacoustic transducers |
TWI343756B (en) * | 2009-08-10 | 2011-06-11 | Ind Tech Res Inst | Flat loudspeaker structure |
TW201026097A (en) * | 2008-12-30 | 2010-07-01 | Ind Tech Res Inst | Solar flexpeaker structure and speaker therewith |
KR101096546B1 (ko) * | 2009-11-10 | 2011-12-22 | 주식회사 비에스이 | 정전형 스피커 |
TWI419577B (zh) * | 2009-12-23 | 2013-12-11 | Ind Tech Res Inst | 揚聲器的製造方法與裝置 |
TWM395976U (en) * | 2010-06-30 | 2011-01-01 | Tsung-Hung Wu | Electret electroacoustic transducer |
TW201204062A (en) * | 2010-07-15 | 2012-01-16 | Taiwan Electrets Electronics Co Ltd | Electrostatic speaker and manufacturing method thereof and conducting plate of the speaker |
US20120148074A1 (en) * | 2010-10-14 | 2012-06-14 | Gaston Bastiaens | Electrostatic Loudspeaker System |
TW201220862A (en) * | 2010-11-03 | 2012-05-16 | Ind Tech Res Inst | Driving Interface device adaptive to a flat speaker |
CN102487468A (zh) * | 2010-12-06 | 2012-06-06 | 洪爱琴 | 一种麦克风 |
GB2490931A (en) * | 2011-05-19 | 2012-11-21 | Warwick Audio Technologies Ltd | Electrostatic acoustic transducer |
CN102843628B (zh) * | 2011-06-24 | 2015-01-07 | 富祐鸿科技股份有限公司 | 耳机发声结构及其组装方法 |
US8699740B2 (en) * | 2011-07-22 | 2014-04-15 | Fortune Grand Technology Inc. | Headphone sound-generating structure and method of assembling same |
US8928337B2 (en) | 2012-01-27 | 2015-01-06 | Schweitzer Engineering Laboratories, Inc. | Device for measuring electrical current and method of manufacturing the same |
GB2522932A (en) | 2014-02-11 | 2015-08-12 | Warwick Audio Technologies Ltd | Improved electrostatic transducer |
GB2522931A (en) | 2014-02-11 | 2015-08-12 | Warwick Audio Technologies Ltd | Improved electrostatic transducer |
KR20160068059A (ko) * | 2014-12-04 | 2016-06-15 | 삼성디스플레이 주식회사 | 다공성 압전 박막을 포함하는 압전 소자 |
GB201906425D0 (en) | 2019-05-07 | 2019-06-19 | Warwick Acoustics Ltd | Electrostatic transducer and diaphragm |
US11617269B2 (en) | 2021-07-20 | 2023-03-28 | Schweitzer Engineering Laboratories, Inc. | Current measuring device for an electric power protection system |
Family Cites Families (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB348573A (en) * | 1930-02-12 | 1931-05-12 | Albert Rauser | Improvements relating to electrostatic loud-speakers |
US2924970A (en) * | 1956-04-30 | 1960-02-16 | Gen Electric | Static force measurement |
US3118022A (en) * | 1961-08-07 | 1964-01-14 | Bell Telephone Labor Inc | Electroacoustic transducer |
DE1939130A1 (de) * | 1969-08-01 | 1971-03-25 | Sennheiser Electronic | Universell verwendbare kapazitive Mikrofonkapsel |
JPS4840084B1 (ja) * | 1969-11-19 | 1973-11-28 | ||
JPS5040720B1 (ja) * | 1970-09-26 | 1975-12-26 | ||
FR2144933A5 (ja) * | 1971-07-02 | 1973-02-16 | Anvar |
-
1973
- 1973-07-23 JP JP8282173A patent/JPS5419172B2/ja not_active Expired
-
1974
- 1974-07-17 GB GB3169374A patent/GB1472778A/en not_active Expired
- 1974-07-17 US US05/489,400 patent/US3942029A/en not_active Expired - Lifetime
- 1974-07-17 NL NL7409685A patent/NL7409685A/xx not_active Application Discontinuation
- 1974-07-22 CA CA205,339A patent/CA1013068A/en not_active Expired
- 1974-07-23 SE SE7409546A patent/SE395102B/xx unknown
- 1974-07-23 NO NO742686A patent/NO140847C/no unknown
- 1974-07-23 FR FR7425571A patent/FR2239072B1/fr not_active Expired
- 1974-07-23 DE DE2435430A patent/DE2435430C2/de not_active Expired
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS51142334U (ja) * | 1975-05-12 | 1976-11-16 | ||
JPS5569027U (ja) * | 1978-11-06 | 1980-05-13 | ||
US8983099B2 (en) | 2010-07-12 | 2015-03-17 | Yamaha Corporation | Electrostatic loudspeaker |
WO2012008460A1 (ja) * | 2010-07-15 | 2012-01-19 | ヤマハ株式会社 | 静電型スピーカおよび静電型スピーカの製造方法 |
JP2012039597A (ja) * | 2010-07-15 | 2012-02-23 | Yamaha Corp | 静電型スピーカおよび静電型スピーカの製造方法 |
Also Published As
Publication number | Publication date |
---|---|
NO140847C (no) | 1979-11-21 |
GB1472778A (en) | 1977-05-04 |
SE395102B (sv) | 1977-07-25 |
CA1013068A (en) | 1977-06-28 |
US3942029A (en) | 1976-03-02 |
DE2435430A1 (de) | 1975-02-06 |
NO140847B (no) | 1979-08-13 |
SE7409546L (ja) | 1975-01-24 |
DE2435430C2 (de) | 1983-02-03 |
AU7141674A (en) | 1976-01-22 |
NO742686L (ja) | 1975-02-17 |
FR2239072B1 (ja) | 1982-03-26 |
NL7409685A (nl) | 1975-01-27 |
JPS5419172B2 (ja) | 1979-07-13 |
FR2239072A1 (ja) | 1975-02-21 |