BE884895A - Dispositifs pourvus d'un circuit magnetique - Google Patents
Dispositifs pourvus d'un circuit magnetiqueInfo
- Publication number
- BE884895A BE884895A BE0/201844A BE201844A BE884895A BE 884895 A BE884895 A BE 884895A BE 0/201844 A BE0/201844 A BE 0/201844A BE 201844 A BE201844 A BE 201844A BE 884895 A BE884895 A BE 884895A
- Authority
- BE
- Belgium
- Prior art keywords
- devices
- magnetic circuit
- magnetic
- circuit
- 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
- H04R11/00—Transducers of moving-armature or moving-core type
Landscapes
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Engineering & Computer Science (AREA)
- Acoustics & Sound (AREA)
- Signal Processing (AREA)
- Hard Magnetic Materials (AREA)
- Audible-Bandwidth Dynamoelectric Transducers Other Than Pickups (AREA)
- Electrostatic, Electromagnetic, Magneto- Strictive, And Variable-Resistance Transducers (AREA)
- Soft Magnetic Materials (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US06/069,276 US4258234A (en) | 1979-08-24 | 1979-08-24 | Electroacoustic device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| BE884895A true BE884895A (fr) | 1981-02-23 |
Family
ID=22087886
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| BE0/201844A BE884895A (fr) | 1979-08-24 | 1980-08-22 | Dispositifs pourvus d'un circuit magnetique |
Country Status (4)
| Country | Link |
|---|---|
| US (1) | US4258234A (fr) |
| JP (1) | JPS5634300A (fr) |
| BE (1) | BE884895A (fr) |
| CA (1) | CA1140666A (fr) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4443667A (en) * | 1982-01-11 | 1984-04-17 | Bell Telephone Laboratories, Incorporated | Electromagnetic transducer |
| JPS5924000A (ja) * | 1982-07-30 | 1984-02-07 | Nippon Gakki Seizo Kk | 電気音響変換器 |
| JP2004519170A (ja) * | 2001-02-13 | 2004-06-24 | コーニンクレッカ フィリップス エレクトロニクス エヌ ヴィ | 膜構造を有する電気音響変換器を製造する方法 |
| US8467565B2 (en) * | 2011-09-22 | 2013-06-18 | Merry Electronics Co., Ltd. | Inductive electroacoustic transducer |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| BE481098A (fr) * | 1947-06-18 | |||
| US4075437A (en) * | 1976-07-16 | 1978-02-21 | Bell Telephone Laboratories, Incorporated | Composition, processing and devices including magnetic alloy |
-
1979
- 1979-08-24 US US06/069,276 patent/US4258234A/en not_active Expired - Lifetime
-
1980
- 1980-07-16 CA CA000356328A patent/CA1140666A/fr not_active Expired
- 1980-08-22 JP JP11490180A patent/JPS5634300A/ja active Pending
- 1980-08-22 BE BE0/201844A patent/BE884895A/fr not_active IP Right Cessation
Also Published As
| Publication number | Publication date |
|---|---|
| US4258234A (en) | 1981-03-24 |
| JPS5634300A (en) | 1981-04-06 |
| CA1140666A (fr) | 1983-02-01 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| RE | Patent lapsed |
Owner name: WESTERN ELECTRIC CY INC. Effective date: 19840822 |