FR2336721A1 - Transducteur electro-acoustique, notamment pour chronometres electroniques - Google Patents
Transducteur electro-acoustique, notamment pour chronometres electroniquesInfo
- Publication number
- FR2336721A1 FR2336721A1 FR7638493A FR7638493A FR2336721A1 FR 2336721 A1 FR2336721 A1 FR 2336721A1 FR 7638493 A FR7638493 A FR 7638493A FR 7638493 A FR7638493 A FR 7638493A FR 2336721 A1 FR2336721 A1 FR 2336721A1
- Authority
- FR
- France
- Prior art keywords
- thin plate
- electro
- acoustic transducer
- plate
- magnetic core
- 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.)
- Granted
Links
Classifications
-
- G—PHYSICS
- G04—HOROLOGY
- G04C—ELECTROMECHANICAL CLOCKS OR WATCHES
- G04C21/00—Producing acoustic time signals by electrical means
- G04C21/02—Constructional details
-
- G—PHYSICS
- G10—MUSICAL INSTRUMENTS; ACOUSTICS
- G10K—SOUND-PRODUCING DEVICES; METHODS OR DEVICES FOR PROTECTING AGAINST, OR FOR DAMPING, NOISE OR OTHER ACOUSTIC WAVES IN GENERAL; ACOUSTICS NOT OTHERWISE PROVIDED FOR
- G10K13/00—Cones, diaphragms, or the like, for emitting or receiving sound in general
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R13/00—Transducers having an acoustic diaphragm of magnetisable material directly co-acting with electromagnet
Landscapes
- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Acoustics & Sound (AREA)
- General Physics & Mathematics (AREA)
- Multimedia (AREA)
- Electromagnetism (AREA)
- Signal Processing (AREA)
- Electrostatic, Electromagnetic, Magneto- Strictive, And Variable-Resistance Transducers (AREA)
- Piezo-Electric Transducers For Audible Bands (AREA)
- Transducers For Ultrasonic Waves (AREA)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP50154297A JPS5277718A (en) | 1975-12-24 | 1975-12-24 | Electromagnetic type electroacoustic transducer |
Publications (2)
Publication Number | Publication Date |
---|---|
FR2336721A1 true FR2336721A1 (fr) | 1977-07-22 |
FR2336721B1 FR2336721B1 (US20100223739A1-20100909-C00005.png) | 1981-10-23 |
Family
ID=15581043
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FR7638493A Granted FR2336721A1 (fr) | 1975-12-24 | 1976-12-21 | Transducteur electro-acoustique, notamment pour chronometres electroniques |
Country Status (6)
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP1617703A2 (en) | 2004-07-16 | 2006-01-18 | LG Electronics Inc. | Speaker apparatus using display window |
Families Citing this family (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4374624A (en) * | 1980-09-08 | 1983-02-22 | Citizen Watch Co., Ltd. | Sound emitting device for electronic timepiece |
US4660186A (en) * | 1986-02-24 | 1987-04-21 | Fred M. Dellorfano, Jr. | Electromagnetic transducers for underwater low-frequency high-power use |
GB2260466B (en) * | 1991-09-28 | 1995-08-16 | Star Mfg Co | Electroacoustic transducer |
JP2905350B2 (ja) * | 1992-11-18 | 1999-06-14 | スター精密 株式会社 | 電気音響変換器 |
US5894264A (en) * | 1997-07-18 | 1999-04-13 | Caterpillar Inc. | Apparatus for generating an audible tone |
US5953436A (en) * | 1997-07-18 | 1999-09-14 | Caterpillar Inc. | Apparatus for generating an audible tone |
US6246330B1 (en) * | 1998-05-29 | 2001-06-12 | Wyn Y. Nielsen | Elimination-absorber monitoring system |
DE10058104C2 (de) * | 2000-11-23 | 2003-10-30 | Harman Audio Electronic Sys | Elektromagnetischer Treiber für einen Plattenlautsprecher |
DE102009036609B4 (de) * | 2009-08-07 | 2012-05-03 | Siemens Aktiengesellschaft | Akustische Signalausgabe bei einem Leistungsschalter |
CN104820024B (zh) * | 2015-04-27 | 2017-10-13 | 北京工业大学 | 一种全向型A0模态Lamb波电磁声传感器 |
US20200088184A1 (en) * | 2017-08-04 | 2020-03-19 | Clean Energy Labs, Llc | Electromagnet membrane pump/transducer system and methods to make and use same |
Family Cites Families (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US1738653A (en) * | 1925-11-24 | 1929-12-10 | American Telephone & Telegraph | Telephone receiver |
US2078385A (en) * | 1933-06-13 | 1937-04-27 | Kato Tooru | Small receiver |
JPS4123125Y1 (US20100223739A1-20100909-C00005.png) * | 1964-06-20 | 1966-11-22 |
-
1975
- 1975-12-24 JP JP50154297A patent/JPS5277718A/ja active Pending
-
1976
- 1976-12-10 GB GB51686/76A patent/GB1539100A/en not_active Expired
- 1976-12-21 FR FR7638493A patent/FR2336721A1/fr active Granted
- 1976-12-23 US US05/753,849 patent/US4090041A/en not_active Expired - Lifetime
- 1976-12-23 DE DE19762658595 patent/DE2658595A1/de not_active Ceased
- 1976-12-23 CH CH1628776A patent/CH623713B/fr unknown
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP1617703A2 (en) | 2004-07-16 | 2006-01-18 | LG Electronics Inc. | Speaker apparatus using display window |
EP1617703A3 (en) * | 2004-07-16 | 2008-09-17 | LG Electronics Inc. | Speaker apparatus using display window |
US7764803B2 (en) | 2004-07-16 | 2010-07-27 | Lg Electronics Inc. | Speaker apparatus using display window |
Also Published As
Publication number | Publication date |
---|---|
GB1539100A (en) | 1979-01-24 |
CH623713B (fr) | |
JPS5277718A (en) | 1977-06-30 |
CH623713GA3 (US20100223739A1-20100909-C00005.png) | 1981-06-30 |
US4090041A (en) | 1978-05-16 |
FR2336721B1 (US20100223739A1-20100909-C00005.png) | 1981-10-23 |
DE2658595A1 (de) | 1977-07-07 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
ST | Notification of lapse |