NL6813993A - - Google Patents
Info
- Publication number
- NL6813993A NL6813993A NL6813993A NL6813993A NL6813993A NL 6813993 A NL6813993 A NL 6813993A NL 6813993 A NL6813993 A NL 6813993A NL 6813993 A NL6813993 A NL 6813993A NL 6813993 A NL6813993 A NL 6813993A
- Authority
- NL
- Netherlands
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
- H04R17/00—Piezoelectric transducers; Electrostrictive transducers
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03F—AMPLIFIERS
- H03F13/00—Amplifiers using amplifying element consisting of two mechanically- or acoustically-coupled transducers, e.g. telephone-microphone amplifier
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03F—AMPLIFIERS
- H03F3/00—Amplifiers with only discharge tubes or only semiconductor devices as amplifying elements
- H03F3/04—Amplifiers with only discharge tubes or only semiconductor devices as amplifying elements with semiconductor devices only
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R7/00—Diaphragms for electromechanical transducers; Cones
- H04R7/16—Mounting or tensioning of diaphragms or cones
- H04R7/18—Mounting or tensioning of diaphragms or cones at the periphery
- H04R7/20—Securing diaphragm or cone resiliently to support by flexible material, springs, cords, or strands
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Acoustics & Sound (AREA)
- Signal Processing (AREA)
- Power Engineering (AREA)
- Multimedia (AREA)
- Piezo-Electric Transducers For Audible Bands (AREA)
Priority Applications (6)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| NL6813993A NL6813993A (xx) | 1968-09-30 | 1968-09-30 | |
| DE19691948095 DE1948095A1 (de) | 1968-09-30 | 1969-09-23 | Wandler zur Umwandlung von akustischen Schwingungen in elektrische Schwingungen und umgekehrt in Form einer Membran mit mindestens einer Schicht aus piezoelektrischem Material |
| US860863A US3683129A (en) | 1968-09-30 | 1969-09-25 | Electroacoustic transducer having a diaphragm made of at least one layer of piezoelectric material |
| GB47432/69A GB1276196A (en) | 1968-09-30 | 1969-09-26 | Electro-acoustic transducer |
| AT911569A AT294212B (de) | 1968-09-30 | 1969-09-26 | Piezoelektrischer Wandler zur Umwandlung von akustischen Schwingungen in elektrische Schwingungen und umgekehrt |
| FR6933363A FR2019237A1 (xx) | 1968-09-30 | 1969-09-30 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| NL6813993A NL6813993A (xx) | 1968-09-30 | 1968-09-30 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| NL6813993A true NL6813993A (xx) | 1970-04-01 |
Family
ID=19804799
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| NL6813993A NL6813993A (xx) | 1968-09-30 | 1968-09-30 |
Country Status (6)
| Country | Link |
|---|---|
| US (1) | US3683129A (xx) |
| AT (1) | AT294212B (xx) |
| DE (1) | DE1948095A1 (xx) |
| FR (1) | FR2019237A1 (xx) |
| GB (1) | GB1276196A (xx) |
| NL (1) | NL6813993A (xx) |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3721840A (en) * | 1971-09-14 | 1973-03-20 | Nittan Co Ltd | Sound generator |
| US4190782A (en) * | 1978-07-24 | 1980-02-26 | Telex Communications, Inc. | Piezoelectric ceramic resonant transducer with stable frequency |
| US4942066A (en) * | 1989-04-21 | 1990-07-17 | E. I. Du Pont De Nemours And Company | Solid imaging method using photohardenable materials of self limiting thickness |
| US5128235A (en) * | 1989-04-21 | 1992-07-07 | E. I. Du Pont De Nemours And Company | Method of forming a three-dimensional object comprising additives imparting reduction of shrinkage to photohardenable compositions |
| JP5136644B2 (ja) * | 2008-07-14 | 2013-02-06 | 株式会社村田製作所 | 圧電発電装置 |
| JP5837827B2 (ja) * | 2012-01-06 | 2015-12-24 | 日本セラミック株式会社 | ユニモルフ振動子と超音波送受信器 |
Family Cites Families (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2939106A (en) * | 1943-10-06 | 1960-05-31 | Bell Telephone Labor Inc | High frequency electromechanical transducer |
| US2448352A (en) * | 1946-03-26 | 1948-08-31 | Sperry Prod Inc | Piezoelectric crystal mounting means |
| US3030606A (en) * | 1953-03-19 | 1962-04-17 | Wilbur T Harris | Hollow conical electromechanical transducer |
| US2967956A (en) * | 1955-04-19 | 1961-01-10 | Gulton Ind Inc | Transducer |
| GB878087A (en) * | 1957-12-09 | 1961-09-27 | Raytheon Co | Electroacoustical apparatus |
| US3007013A (en) * | 1959-04-22 | 1961-10-31 | Astatic Corp | Microphone construction |
| US3206558A (en) * | 1961-09-22 | 1965-09-14 | Erie Technological Prod Inc | Microphone |
| BE623017A (xx) * | 1961-09-29 | |||
| US3305638A (en) * | 1964-02-17 | 1967-02-21 | Steven D Teachout | Condenser microphone circuit with solid electrolyte battery polarizing source |
-
1968
- 1968-09-30 NL NL6813993A patent/NL6813993A/xx unknown
-
1969
- 1969-09-23 DE DE19691948095 patent/DE1948095A1/de active Pending
- 1969-09-25 US US860863A patent/US3683129A/en not_active Expired - Lifetime
- 1969-09-26 GB GB47432/69A patent/GB1276196A/en not_active Expired
- 1969-09-26 AT AT911569A patent/AT294212B/de not_active IP Right Cessation
- 1969-09-30 FR FR6933363A patent/FR2019237A1/fr not_active Withdrawn
Also Published As
| Publication number | Publication date |
|---|---|
| DE1948095A1 (de) | 1970-08-27 |
| AT294212B (de) | 1971-11-10 |
| US3683129A (en) | 1972-08-08 |
| GB1276196A (en) | 1972-06-01 |
| FR2019237A1 (xx) | 1970-06-26 |