FI57679C - Elektretmikrofon - Google Patents

Elektretmikrofon Download PDF

Info

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
Application number
FI3188/72A
Other languages
English (en)
Finnish (fi)
Swedish (sv)
Other versions
FI57679B (fi
Inventor
Jan-Olof Hedman
Original Assignee
Ericsson Telefon Ab L M
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Ericsson Telefon Ab L M filed Critical Ericsson Telefon Ab L M
Application granted granted Critical
Publication of FI57679B publication Critical patent/FI57679B/sv
Publication of FI57679C publication Critical patent/FI57679C/sv

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)
FI3188/72A 1971-12-02 1972-11-14 Elektretmikrofon FI57679C (fi)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
SE1545671 1971-12-02
SE15456/71A SE362571B (de) 1971-12-02 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 (de)
JP (1) JPS5816000B2 (de)
AU (1) AU467222B2 (de)
BR (1) BR7208381D0 (de)
CA (1) CA961974A (de)
CH (1) CH555123A (de)
DE (1) DE2257358C3 (de)
DK (1) DK141150B (de)
ES (1) ES409005A1 (de)
FI (1) FI57679C (de)
FR (1) FR2162194B1 (de)
GB (1) GB1365257A (de)
IT (1) IT971396B (de)
NL (1) NL7216115A (de)
NO (1) NO132015C (de)
SE (1) SE362571B (de)

Families Citing this family (23)

* Cited by examiner, † Cited by third party
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 (de) * 1974-12-27 1981-08-26
US4070741A (en) * 1976-09-27 1978-01-31 Genrad Inc. Method of making an electret acoustic transducer
JPS53100228U (de) * 1976-12-27 1978-08-14
SE398588B (sv) * 1977-03-23 1977-12-27 Ericsson Telefon Ab L M Temperaturstabil elektretmikrofon
JPS5754399Y2 (de) * 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)

* Cited by examiner, † Cited by third party
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

Also Published As

Publication number Publication date
CA961974A (en) 1975-01-28
NO132015C (de) 1975-09-03
DE2257358C3 (de) 1980-09-25
US3812575A (en) 1974-05-28
SE362571B (de) 1973-12-10
BR7208381D0 (pt) 1973-08-30
DE2257358B2 (de) 1976-01-15
NL7216115A (de) 1973-06-05
DE2257358A1 (de) 1973-06-14
AU4917672A (en) 1974-05-23
AU467222B2 (en) 1975-11-27
CH555123A (de) 1974-10-15
FR2162194B1 (de) 1976-06-04
IT971396B (it) 1974-04-30
JPS4864917A (de) 1973-09-07
FR2162194A1 (de) 1973-07-13
ES409005A1 (es) 1975-10-16
FI57679B (fi) 1980-05-30
GB1365257A (en) 1974-08-29
DK141150B (da) 1980-01-21
JPS5816000B2 (ja) 1983-03-29
DK141150C (de) 1980-07-07
NO132015B (de) 1975-05-26

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