IT1042081B - Procedimento di fabbricazione di microfoni ad elettrete - Google Patents

Procedimento di fabbricazione di microfoni ad elettrete

Info

Publication number
IT1042081B
IT1042081B IT26359/75A IT2635975A IT1042081B IT 1042081 B IT1042081 B IT 1042081B IT 26359/75 A IT26359/75 A IT 26359/75A IT 2635975 A IT2635975 A IT 2635975A IT 1042081 B IT1042081 B IT 1042081B
Authority
IT
Italy
Prior art keywords
manufacturing procedure
microphone manufacturing
electronic microphone
electronic
procedure
Prior art date
Application number
IT26359/75A
Other languages
English (en)
Italian (it)
Inventor
N Andersson
R 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
Application granted granted Critical
Publication of IT1042081B publication Critical patent/IT1042081B/it

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)
IT26359/75A 1974-08-15 1975-08-14 Procedimento di fabbricazione di microfoni ad elettrete IT1042081B (it)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SE7410408A SE382297B (sv) 1974-08-15 1974-08-15 Forfarande for framstellning av en elektretmikrofon med ett noggrant bestemt luftgap.

Publications (1)

Publication Number Publication Date
IT1042081B true IT1042081B (it) 1980-01-30

Family

ID=20321900

Family Applications (1)

Application Number Title Priority Date Filing Date
IT26359/75A IT1042081B (it) 1974-08-15 1975-08-14 Procedimento di fabbricazione di microfoni ad elettrete

Country Status (11)

Country Link
CH (1) CH589994A5 (fi)
DE (1) DE2532980C3 (fi)
DK (1) DK147670C (fi)
ES (1) ES440246A1 (fi)
FI (1) FI57680C (fi)
FR (1) FR2282195A1 (fi)
GB (1) GB1510833A (fi)
IT (1) IT1042081B (fi)
NL (1) NL7509703A (fi)
NO (1) NO136387C (fi)
SE (1) SE382297B (fi)

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 (fi) * 1971-07-28 1976-05-18
SE362571B (fi) * 1971-12-02 1973-12-10 Ericsson Telefon Ab L M
NL7210088A (fi) * 1972-07-21 1974-01-23

Also Published As

Publication number Publication date
GB1510833A (en) 1978-05-17
DK147670B (da) 1984-11-05
FR2282195A1 (fr) 1976-03-12
DK147670C (da) 1985-05-20
ES440246A1 (es) 1977-03-01
DE2532980C3 (de) 1985-07-11
FI57680B (fi) 1980-05-30
SE7410408L (sv) 1976-01-19
NL7509703A (nl) 1976-02-17
FI57680C (fi) 1980-09-10
FI752120A (fi) 1976-02-16
NO752839L (fi) 1976-02-17
FR2282195B1 (fi) 1979-05-11
NO136387B (fi) 1977-05-16
DK368875A (da) 1976-02-16
NO136387C (no) 1977-08-31
DE2532980A1 (de) 1976-03-04
CH589994A5 (fi) 1977-07-29
DE2532980B2 (de) 1976-08-05
SE382297B (sv) 1976-01-19

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