BR8201551A - Transdutor eletromagnetico - Google Patents
Transdutor eletromagneticoInfo
- Publication number
- BR8201551A BR8201551A BR8201551A BR8201551A BR8201551A BR 8201551 A BR8201551 A BR 8201551A BR 8201551 A BR8201551 A BR 8201551A BR 8201551 A BR8201551 A BR 8201551A BR 8201551 A BR8201551 A BR 8201551A
- Authority
- BR
- Brazil
- Prior art keywords
- electromagnetic transducer
- transducer
- electromagnetic
- 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)
- Electrostatic, Electromagnetic, Magneto- Strictive, And Variable-Resistance Transducers (AREA)
- Measuring Magnetic Variables (AREA)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP1981039773U JPS57153400U (pt) | 1981-03-20 | 1981-03-20 |
Publications (1)
Publication Number | Publication Date |
---|---|
BR8201551A true BR8201551A (pt) | 1983-02-08 |
Family
ID=12562246
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
BR8201551A BR8201551A (pt) | 1981-03-20 | 1982-03-19 | Transdutor eletromagnetico |
Country Status (4)
Country | Link |
---|---|
US (1) | US4386244A (pt) |
JP (1) | JPS57153400U (pt) |
BR (1) | BR8201551A (pt) |
GB (1) | GB2096862B (pt) |
Families Citing this family (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH06319190A (ja) * | 1992-03-31 | 1994-11-15 | Souei Denki Seisakusho:Yugen | レシーバーとマイクロホーンを一体化したイヤホーンの構成方法装置 |
US5724015A (en) * | 1995-06-01 | 1998-03-03 | California Institute Of Technology | Bulk micromachined inductive transducers on silicon |
JPH10224892A (ja) * | 1997-02-12 | 1998-08-21 | Star Micronics Co Ltd | 電気音響変換器 |
JPH10290494A (ja) * | 1997-04-15 | 1998-10-27 | Star Micronics Co Ltd | 電気音響変換器 |
EP1179285B1 (en) * | 1999-05-14 | 2004-04-07 | Matsushita Electric Industrial Co., Ltd. | Electromagnetic transducer and portable communication device |
US6709886B2 (en) | 2000-04-25 | 2004-03-23 | Umachines, Inc. | Method of fabricating micromachined devices |
US6639713B2 (en) | 2000-04-25 | 2003-10-28 | Umachines, Inc. | Silicon micromachined optical device |
Family Cites Families (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2220942A (en) * | 1936-08-01 | 1940-11-12 | Bell Telephone Labor Inc | Acoustic device |
NL73059C (pt) * | 1939-05-19 | |||
US2754373A (en) * | 1952-08-22 | 1956-07-10 | Harry B Shaper | Miniature hearing-aid receiver |
US3515818A (en) * | 1962-01-23 | 1970-06-02 | Tibbetts Industries | Magnetic translating device |
US3593217A (en) * | 1967-10-27 | 1971-07-13 | Texas Instruments Inc | Subminiature tunable circuits in modular form and method for making same |
US3542974A (en) * | 1968-06-14 | 1970-11-24 | Western Electric Co | Electrical transducer |
JPS5926577Y2 (ja) * | 1979-09-17 | 1984-08-02 | ティーディーケイ株式会社 | 小型インダクタンス素子 |
-
1981
- 1981-03-20 JP JP1981039773U patent/JPS57153400U/ja active Pending
-
1982
- 1982-03-11 GB GB8207087A patent/GB2096862B/en not_active Expired
- 1982-03-12 US US06/357,578 patent/US4386244A/en not_active Expired - Fee Related
- 1982-03-19 BR BR8201551A patent/BR8201551A/pt unknown
Also Published As
Publication number | Publication date |
---|---|
GB2096862A (en) | 1982-10-20 |
GB2096862B (en) | 1984-11-07 |
US4386244A (en) | 1983-05-31 |
JPS57153400U (pt) | 1982-09-27 |
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