SE7410408L - Forfarande for framstellning av en elektretmikrofon med ett noggrant bestemt luftgap. - Google Patents

Forfarande for framstellning av en elektretmikrofon med ett noggrant bestemt luftgap.

Info

Publication number
SE7410408L
SE7410408L SE7410408A SE7410408A SE7410408L SE 7410408 L SE7410408 L SE 7410408L SE 7410408 A SE7410408 A SE 7410408A SE 7410408 A SE7410408 A SE 7410408A SE 7410408 L SE7410408 L SE 7410408L
Authority
SE
Sweden
Prior art keywords
layer
electret
procedure
manufacturing
air gap
Prior art date
Application number
SE7410408A
Other languages
English (en)
Swedish (sv)
Other versions
SE382297B (sv
Inventor
N A M Andersson
R B G Jonsson
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
Priority to SE7410408A priority Critical patent/SE7410408L/
Priority to DE2532980A priority patent/DE2532980C3/de
Priority to FI752120A priority patent/FI57680C/sv
Priority to GB33607/75A priority patent/GB1510833A/en
Priority to NL7509703A priority patent/NL7509703A/xx
Priority to DK368875A priority patent/DK147670C/da
Priority to CH1057375A priority patent/CH589994A5/xx
Priority to ES440246A priority patent/ES440246A1/es
Priority to IT26359/75A priority patent/IT1042081B/it
Priority to FR7525443A priority patent/FR2282195A1/fr
Priority to NO752839A priority patent/NO136387C/no
Publication of SE382297B publication Critical patent/SE382297B/xx
Publication of SE7410408L publication Critical patent/SE7410408L/

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
    • H04R19/00—Electrostatic transducers
    • H04R19/01—Electrostatic transducers characterised by the use of electrets
    • 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

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
  • Electrostatic, Electromagnetic, Magneto- Strictive, And Variable-Resistance Transducers (AREA)
SE7410408A 1974-08-15 1974-08-15 Forfarande for framstellning av en elektretmikrofon med ett noggrant bestemt luftgap. SE7410408L (sv)

Priority Applications (11)

Application Number Priority Date Filing Date Title
SE7410408A SE7410408L (sv) 1974-08-15 1974-08-15 Forfarande for framstellning av en elektretmikrofon med ett noggrant bestemt luftgap.
DE2532980A DE2532980C3 (de) 1974-08-15 1975-07-23 Verfahren zur Herstellung eines Elektretmikrophons mit genau bestimmtem Luftspalt
FI752120A FI57680C (fi) 1974-08-15 1975-07-24 Foerfarande foer framstaellning av en elektret-mikrofon med ett noggrant bestaemt luftgap
GB33607/75A GB1510833A (en) 1974-08-15 1975-08-12 Process for manufacturing an electret microphone
NL7509703A NL7509703A (nl) 1974-08-15 1975-08-14 Werkwijze voor het vervaardigen van een microfoon van de als elektreet aangeduide soort, en een microfoon vervaardigd volgens zulk een werkwijze.
DK368875A DK147670C (da) 1974-08-15 1975-08-14 Fremgangsmaade til fremstilling af en elektretmikrofon med en noejagtigt bestemt luftspalte
CH1057375A CH589994A5 ( ) 1974-08-15 1975-08-14
ES440246A ES440246A1 (es) 1974-08-15 1975-08-14 Procedimiento para la fabricacion de un microfono de elec- treto con un espacio de aire exactamente determinado.
IT26359/75A IT1042081B (it) 1974-08-15 1975-08-14 Procedimento di fabbricazione di microfoni ad elettrete
FR7525443A FR2282195A1 (fr) 1974-08-15 1975-08-14 Procede de fabrication d'un microphone a electret
NO752839A NO136387C (no) 1974-08-15 1975-08-14 Fremgangsm}te for fremstilling av en elektretmikrofon med et n¦yaktig bestemt luftgap

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SE7410408A SE7410408L (sv) 1974-08-15 1974-08-15 Forfarande for framstellning av en elektretmikrofon med ett noggrant bestemt luftgap.

Publications (2)

Publication Number Publication Date
SE382297B SE382297B (sv) 1976-01-19
SE7410408L true SE7410408L (sv) 1976-01-19

Family

ID=20321900

Family Applications (1)

Application Number Title Priority Date Filing Date
SE7410408A SE7410408L (sv) 1974-08-15 1974-08-15 Forfarande for framstellning av en elektretmikrofon med ett noggrant bestemt luftgap.

Country Status (11)

Country Link
CH (1) CH589994A5 ( )
DE (1) DE2532980C3 ( )
DK (1) DK147670C ( )
ES (1) ES440246A1 ( )
FI (1) FI57680C ( )
FR (1) FR2282195A1 ( )
GB (1) GB1510833A ( )
IT (1) IT1042081B ( )
NL (1) NL7509703A ( )
NO (1) NO136387C ( )
SE (1) SE7410408L ( )

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SE398588B (sv) * 1977-03-23 1977-12-27 Ericsson Telefon Ab L M Temperaturstabil elektretmikrofon
GB2079055B (en) * 1980-06-30 1985-02-20 Tokyo Shibaura Electric Co Electret device
GB2136207B (en) * 1983-03-07 1987-06-17 Harold Wilson Meredith Pook Manufacture of electrets
DE3927254A1 (de) * 1989-08-18 1991-02-21 Reifenhaeuser Masch Verfahren und spinnduesenaggregat fuer die herstellung von kunststoff-faeden und/oder kunststoff-fasern im zuge der herstellung von einem spinnvlies aus thermoplastischem kunststoff

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA832651A (en) * 1970-01-20 Thermo Electron Corporation Electroacoustic transducers and method of making the same
DE844306C (de) * 1948-10-02 1952-07-17 Siemens Ag Kondensatormikrophon mit sehr kleinem Abstand zwischen Membran und Gegenflaeche
FR1324076A (fr) * 1962-05-30 1963-04-12 Accumulatoren Fabrik Ag Accumulateur dont l'énergie électrique est accumulée dans un diélectrique et procédé pour sa fabrication
US3373251A (en) * 1965-02-23 1968-03-12 Shure Bros Electrostatic transducer
NL146969B (nl) * 1969-11-12 1975-08-15 Tno Verbetering van werkwijze voor het formeren van een eenzijdig gemetalliseerde elektreetfoelie.
JPS5115599B1 ( ) * 1971-07-28 1976-05-18
SE362571B ( ) * 1971-12-02 1973-12-10 Ericsson Telefon Ab L M
NL7210088A ( ) * 1972-07-21 1974-01-23

Also Published As

Publication number Publication date
FR2282195A1 (fr) 1976-03-12
GB1510833A (en) 1978-05-17
DE2532980A1 (de) 1976-03-04
DK147670C (da) 1985-05-20
DK147670B (da) 1984-11-05
NO136387B ( ) 1977-05-16
FI752120A ( ) 1976-02-16
ES440246A1 (es) 1977-03-01
FR2282195B1 ( ) 1979-05-11
SE382297B (sv) 1976-01-19
NO136387C (no) 1977-08-31
CH589994A5 ( ) 1977-07-29
NO752839L ( ) 1976-02-17
NL7509703A (nl) 1976-02-17
DK368875A (da) 1976-02-16
DE2532980B2 (de) 1976-08-05
FI57680C (fi) 1980-09-10
IT1042081B (it) 1980-01-30
FI57680B (fi) 1980-05-30
DE2532980C3 (de) 1985-07-11

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