SE382297B - 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
- SE382297B SE382297B SE7410408A SE7410408A SE382297B SE 382297 B SE382297 B SE 382297B SE 7410408 A SE7410408 A SE 7410408A SE 7410408 A SE7410408 A SE 7410408A SE 382297 B SE382297 B SE 382297B
- Authority
- SE
- Sweden
- Prior art keywords
- procedure
- manufacturing
- air gap
- determined air
- carefully determined
- 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
- 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)
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 |
NO752839A NO136387C (no) | 1974-08-15 | 1975-08-14 | Fremgangsm}te for fremstilling av en elektretmikrofon med et n¦yaktig bestemt luftgap |
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. |
CH1057375A CH589994A5 (fi) | 1974-08-15 | 1975-08-14 | |
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. |
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 |
DK368875A DK147670C (da) | 1974-08-15 | 1975-08-14 | Fremgangsmaade til fremstilling af en elektretmikrofon med en noejagtigt bestemt luftspalte |
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 true SE382297B (sv) | 1976-01-19 |
SE7410408L 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 (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) | SE7410408L (fi) |
Families Citing this family (4)
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)
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 |
-
1974
- 1974-08-15 SE SE7410408A patent/SE7410408L/ not_active IP Right Cessation
-
1975
- 1975-07-23 DE DE2532980A patent/DE2532980C3/de not_active Expired
- 1975-07-24 FI FI752120A patent/FI57680C/fi not_active IP Right Cessation
- 1975-08-12 GB GB33607/75A patent/GB1510833A/en not_active Expired
- 1975-08-14 CH CH1057375A patent/CH589994A5/xx not_active IP Right Cessation
- 1975-08-14 NO NO752839A patent/NO136387C/no unknown
- 1975-08-14 NL NL7509703A patent/NL7509703A/xx not_active Application Discontinuation
- 1975-08-14 ES ES440246A patent/ES440246A1/es not_active Expired
- 1975-08-14 FR FR7525443A patent/FR2282195A1/fr active Granted
- 1975-08-14 IT IT26359/75A patent/IT1042081B/it active
- 1975-08-14 DK DK368875A patent/DK147670C/da not_active IP Right Cessation
Also Published As
Publication number | Publication date |
---|---|
NL7509703A (nl) | 1976-02-17 |
ES440246A1 (es) | 1977-03-01 |
DK147670B (da) | 1984-11-05 |
NO136387C (no) | 1977-08-31 |
NO752839L (fi) | 1976-02-17 |
IT1042081B (it) | 1980-01-30 |
FR2282195A1 (fr) | 1976-03-12 |
DE2532980C3 (de) | 1985-07-11 |
DK147670C (da) | 1985-05-20 |
DK368875A (da) | 1976-02-16 |
DE2532980A1 (de) | 1976-03-04 |
GB1510833A (en) | 1978-05-17 |
FI57680B (fi) | 1980-05-30 |
FI57680C (fi) | 1980-09-10 |
NO136387B (fi) | 1977-05-16 |
DE2532980B2 (de) | 1976-08-05 |
SE7410408L (sv) | 1976-01-19 |
FR2282195B1 (fi) | 1979-05-11 |
CH589994A5 (fi) | 1977-07-29 |
FI752120A (fi) | 1976-02-16 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
EG11559A (en) | A method for the manufacture of an electret fibrous filte | |
FR2290811A1 (fr) | Unite microphonique perfectionnee | |
DK409175A (da) | Hovedtelefon | |
SE417470B (sv) | Forfarande for framstellning av en brenslecell | |
SE7608261L (sv) | Gasframstellning | |
SE448790B (sv) | Forfarande for framstellning av ett dokument | |
NL7502461A (nl) | Met gas gekoelde elektrische machine. | |
IT1039311B (it) | Avvolgimento di traferro di una macchina elettrica | |
SE408249B (sv) | Foerfarande foer montering av en statorlindning | |
NO142533C (no) | Fremgangsmaate for fremstilling av membranmateriale | |
NL7508526A (nl) | Vervaardigingswerkwijze voor electro-akoesti- sche overdragers. | |
SE7503644L (sv) | Sats av element for ett stengsel. | |
SE402666B (sv) | Forfarande for framstellning av ett elektriskt isolerande lindningsmaterial | |
SE7513280L (sv) | Tendstromsgenerator for en elektrisk granattendare | |
SE382297B (sv) | Forfarande for framstellning av en elektretmikrofon med ett noggrant bestemt luftgap. | |
FI64203B (fi) | Inloppslaoda foer maskiner foer framstaellning av ett banformigt material | |
SE7414502L (sv) | Genomforing for elektrisk forbindelse | |
FI54053B (fi) | Foerfarande foer isolering av hemagglutinin- och neuraminidasbestaondsdelarna ur ett influensavirus | |
FI54728B (fi) | Plaotklaedsel foer ett takfoenster | |
SE7508056L (sv) | Forfarande for framstellning av ett janer jemte forbettrat faner. | |
SE412534B (sv) | Forfarande for framstellning av ett gangjern | |
SE7504259L (sv) | Sett att framstella metallalster overdragna med ett zirkoniumnitridskikt. | |
FR2324901A1 (fr) | Compresseur a air | |
SE404105B (sv) | Forfarande for tillverkning av ett elektriskt motstand | |
SE439328B (sv) | Sett for framstellning av ett superhart sintrat material |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
NUG | Patent has lapsed |
Ref document number: 7410408-4 Format of ref document f/p: F |