FI57679C - Elektretmikrofon - Google Patents
Elektretmikrofon Download PDFInfo
- Publication number
- FI57679C FI57679C FI3188/72A FI318872A FI57679C FI 57679 C FI57679 C FI 57679C FI 3188/72 A FI3188/72 A FI 3188/72A FI 318872 A FI318872 A FI 318872A FI 57679 C FI57679 C FI 57679C
- Authority
- FI
- Finland
- Prior art keywords
- microphone
- film
- electrode
- electret
- fixed electrode
- 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
- H04R31/00—Apparatus or processes specially adapted for the manufacture of transducers or diaphragms therefor
- H04R31/006—Interconnection of transducer parts
-
- 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
- H04R19/016—Electrostatic transducers characterised by the use of electrets for microphones
-
- 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
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T29/00—Metal working
- Y10T29/49—Method of mechanical manufacture
- Y10T29/49002—Electrical device making
- Y10T29/49005—Acoustic transducer
-
- 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
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T29/00—Metal working
- Y10T29/49—Method of mechanical manufacture
- Y10T29/49002—Electrical device making
- Y10T29/49226—Electret making
Landscapes
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Physics & Mathematics (AREA)
- Acoustics & Sound (AREA)
- Signal Processing (AREA)
- Electrostatic, Electromagnetic, Magneto- Strictive, And Variable-Resistance Transducers (AREA)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
SE15456/71A SE362571B (no) | 1971-12-02 | 1971-12-02 | |
SE1545671 | 1971-12-02 |
Publications (2)
Publication Number | Publication Date |
---|---|
FI57679B FI57679B (fi) | 1980-05-30 |
FI57679C true FI57679C (fi) | 1980-09-10 |
Family
ID=20300673
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FI3188/72A FI57679C (fi) | 1971-12-02 | 1972-11-14 | Elektretmikrofon |
Country Status (16)
Country | Link |
---|---|
US (1) | US3812575A (no) |
JP (1) | JPS5816000B2 (no) |
AU (1) | AU467222B2 (no) |
BR (1) | BR7208381D0 (no) |
CA (1) | CA961974A (no) |
CH (1) | CH555123A (no) |
DE (1) | DE2257358C3 (no) |
DK (1) | DK141150B (no) |
ES (1) | ES409005A1 (no) |
FI (1) | FI57679C (no) |
FR (1) | FR2162194B1 (no) |
GB (1) | GB1365257A (no) |
IT (1) | IT971396B (no) |
NL (1) | NL7216115A (no) |
NO (1) | NO132015C (no) |
SE (1) | SE362571B (no) |
Families Citing this family (23)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3896274A (en) * | 1973-10-04 | 1975-07-22 | Thermo Electron Corp | Electret earphone |
SE7410408L (sv) * | 1974-08-15 | 1976-01-19 | Ericsson Telefon Ab L M | Forfarande for framstellning av en elektretmikrofon med ett noggrant bestemt luftgap. |
JPS5636233Y2 (no) * | 1974-12-27 | 1981-08-26 | ||
US4070741A (en) * | 1976-09-27 | 1978-01-31 | Genrad Inc. | Method of making an electret acoustic transducer |
JPS53100228U (no) * | 1976-12-27 | 1978-08-14 | ||
SE398588B (sv) * | 1977-03-23 | 1977-12-27 | Ericsson Telefon Ab L M | Temperaturstabil elektretmikrofon |
JPS5754399Y2 (no) * | 1978-02-20 | 1982-11-25 | ||
GB2079056B (en) * | 1980-06-30 | 1985-04-17 | Tokyo Shibaura Electric Co | Electret device |
GB2079053B (en) * | 1980-06-30 | 1984-03-28 | Tokyo Shibaura Electric Co | Electret device |
US4429190A (en) * | 1981-11-20 | 1984-01-31 | Bell Telephone Laboratories, Incorporated | Continuous strip electret transducer array |
DE8531503U1 (de) * | 1985-11-07 | 1987-03-05 | Siemens AG, 1000 Berlin und 8000 München | Röntgenstrahler |
US4767973A (en) * | 1987-07-06 | 1988-08-30 | Sarcos Incorporated | Systems and methods for sensing position and movement |
JPH02149199A (ja) * | 1988-11-30 | 1990-06-07 | Matsushita Electric Ind Co Ltd | エレクトレットコンデンサマイクロホン |
US5408534A (en) * | 1992-03-05 | 1995-04-18 | Knowles Electronics, Inc. | Electret microphone assembly, and method of manufacturer |
US5647007A (en) * | 1994-12-22 | 1997-07-08 | Helen Of Troy Limited | Optimized sound components for hair dryer stereo system |
AT410498B (de) * | 2001-02-20 | 2003-05-26 | Akg Acoustics Gmbh | Elektroakustische kapsel |
TW200629954A (en) * | 2004-11-02 | 2006-08-16 | Hosiden Corp | Condenser microphone and method for manufacturing substrate for the same |
JP4245625B2 (ja) * | 2006-09-29 | 2009-03-25 | ホシデン株式会社 | エレクトレットコンデンサマイクロホン |
JP5172198B2 (ja) * | 2007-04-27 | 2013-03-27 | 三洋電機株式会社 | エレクトレット素子および静電動作装置 |
JP4944760B2 (ja) * | 2007-12-27 | 2012-06-06 | ホシデン株式会社 | エレクトレットコンデンサマイクロホン |
TWI378733B (en) * | 2008-10-27 | 2012-12-01 | Htc Corp | Method for manufacturing electret diaphragm |
KR101276350B1 (ko) * | 2011-07-04 | 2013-06-18 | 주식회사 비에스이 | 스프링 베이스를 이용한 접합형 콘덴서 마이크로폰 |
US9583456B2 (en) | 2013-11-22 | 2017-02-28 | Invensas Corporation | Multiple bond via arrays of different wire heights on a same substrate |
Family Cites Families (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR1330592A (fr) * | 1961-08-07 | 1963-06-21 | Western Electric Co | Transducteur électrostatique |
US3118022A (en) * | 1961-08-07 | 1964-01-14 | Bell Telephone Labor Inc | Electroacoustic transducer |
FR1354631A (fr) * | 1962-05-22 | 1964-03-06 | Western Electric Co | Transducteur électroacoustique |
US3436492A (en) * | 1966-01-17 | 1969-04-01 | Northern Electric Co | Field effect electroacoustic transducer |
US3612778A (en) * | 1967-05-15 | 1971-10-12 | Thermo Electron Corp | Electret acoustic transducer and method of making |
-
1971
- 1971-12-02 SE SE15456/71A patent/SE362571B/xx unknown
-
1972
- 1972-11-14 FI FI3188/72A patent/FI57679C/sv active
- 1972-11-20 DE DE2257358A patent/DE2257358C3/de not_active Expired
- 1972-11-22 US US00308832A patent/US3812575A/en not_active Expired - Lifetime
- 1972-11-23 CH CH1707072A patent/CH555123A/xx not_active IP Right Cessation
- 1972-11-23 AU AU49176/72A patent/AU467222B2/en not_active Expired
- 1972-11-27 ES ES409005A patent/ES409005A1/es not_active Expired
- 1972-11-28 NL NL7216115A patent/NL7216115A/xx not_active Application Discontinuation
- 1972-11-29 BR BR008381/72A patent/BR7208381D0/pt unknown
- 1972-11-30 IT IT32313/72A patent/IT971396B/it active
- 1972-12-01 NO NO4428/72A patent/NO132015C/no unknown
- 1972-12-01 CA CA158,473A patent/CA961974A/en not_active Expired
- 1972-12-01 GB GB5573172A patent/GB1365257A/en not_active Expired
- 1972-12-01 DK DK603072AA patent/DK141150B/da not_active IP Right Cessation
- 1972-12-01 FR FR7242899A patent/FR2162194B1/fr not_active Expired
- 1972-12-02 JP JP47120344A patent/JPS5816000B2/ja not_active Expired
Also Published As
Publication number | Publication date |
---|---|
AU467222B2 (en) | 1975-11-27 |
FI57679B (fi) | 1980-05-30 |
DK141150C (no) | 1980-07-07 |
NL7216115A (no) | 1973-06-05 |
DE2257358C3 (de) | 1980-09-25 |
NO132015B (no) | 1975-05-26 |
BR7208381D0 (pt) | 1973-08-30 |
JPS4864917A (no) | 1973-09-07 |
FR2162194A1 (no) | 1973-07-13 |
NO132015C (no) | 1975-09-03 |
IT971396B (it) | 1974-04-30 |
CA961974A (en) | 1975-01-28 |
US3812575A (en) | 1974-05-28 |
DE2257358A1 (de) | 1973-06-14 |
GB1365257A (en) | 1974-08-29 |
DE2257358B2 (de) | 1976-01-15 |
JPS5816000B2 (ja) | 1983-03-29 |
CH555123A (de) | 1974-10-15 |
DK141150B (da) | 1980-01-21 |
FR2162194B1 (no) | 1976-06-04 |
ES409005A1 (es) | 1975-10-16 |
SE362571B (no) | 1973-12-10 |
AU4917672A (en) | 1974-05-23 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
FI57679C (fi) | Elektretmikrofon | |
US5702629A (en) | Piezeoelectric ceramic-polymer composites | |
TW503444B (en) | Semiconductor device and manufacturing method thereof | |
US7024738B2 (en) | Method for controlling a direction of polarization of a piezoelectric thin film | |
Kacprzyk et al. | Piezoelectric properties of nonuniform electrets | |
KR20140146234A (ko) | 투명 도전성 필름 및 그 제조 방법 | |
JPWO2009144972A1 (ja) | シート型振動体および音響機器 | |
US20180103323A1 (en) | Microphone and method for manufacturing the same | |
JP2003347570A (ja) | 太陽電池用裏面保護シート | |
CA1084153A (en) | Temperature-stable electret microphone with embossed, small area, electret | |
US8369545B2 (en) | Flexible luminescent electro-acoustic transducer and electronic device using the same | |
Marcus | Controlling the piezoelectric activity distribution in poly (vinylidene fluoride) transducers | |
JPS58134485A (ja) | 分極による無しわ圧電フイルムの製造方法 | |
JP2001250992A (ja) | 可撓性圧電素子 | |
JP2010231173A (ja) | 光学物品およびその製造方法 | |
US8654996B2 (en) | Spacer for a capacitive microphone and capacitive microphone with the same | |
JPS58186981A (ja) | 入出力変換素子 | |
Rychkov et al. | Unipolar Teflon®-FEP ferroelectrets-choice of negative electret charge enhances stability | |
JPS62133605A (ja) | 絶縁膜形成方法 | |
JPH01170300A (ja) | 圧電素子板 | |
US20020179984A1 (en) | Silicon-based ferroelectric cantilever structure | |
JPS62155700A (ja) | 音響振動板 | |
EP1765175B1 (en) | Ultrasonic probe and method for the fabrication thereof | |
TW202145608A (zh) | 可伸縮導電膜、感測器、電波吸收體及反射器 | |
JPH0746077A (ja) | 表面弾性波フィルタとその製造方法 |