GB941657A - Improvements in or relating to microphones - Google Patents
Improvements in or relating to microphonesInfo
- Publication number
- GB941657A GB941657A GB2729161A GB2729161A GB941657A GB 941657 A GB941657 A GB 941657A GB 2729161 A GB2729161 A GB 2729161A GB 2729161 A GB2729161 A GB 2729161A GB 941657 A GB941657 A GB 941657A
- Authority
- GB
- United Kingdom
- Prior art keywords
- semi
- wafer
- conductor
- july
- diaphragm
- Prior art date
- Legal status (The legal status 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 status listed.)
- Expired
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
- H04R21/00—Variable-resistance transducers
- H04R21/02—Microphones
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R21/00—Variable-resistance transducers
Landscapes
- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Acoustics & Sound (AREA)
- Signal Processing (AREA)
- Pressure Sensors (AREA)
- Electrostatic, Electromagnetic, Magneto- Strictive, And Variable-Resistance Transducers (AREA)
Abstract
941,657. Semi-conductor microphones. SIEMENS & HALSKE A.G. July 27, 1961 [July 28, 1960], No. 27291/61. Heading H4J. [Also in Division H1] A microphone comprises a diaphragm 1 having a wafer of semi-conductor material 4 attached to its centre, the semi-conductor having a many valley energy band structure. The semi-conductor wafer 4 is attached to the diaphragm by a layer of synthetic resin 5, and is provided with contacts 6 and 7 of a material which may be silver or gold to which an impurity has been added to ensure a good ohmic contact. The wafer is connected in series with a fixed resistor and a D.C. source so that changes in its resistance when it is distorted give rise to changes in the voltage across it. It is suggested that a portion of the wafer may be constructed as an amplifying device, e.g. transistor, to serve as a first amplifying stage.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DES69642A DE1175746B (en) | 1960-07-28 | 1960-07-28 | Arrangement for converting mechanical vibrations into electrical ones |
Publications (1)
Publication Number | Publication Date |
---|---|
GB941657A true GB941657A (en) | 1963-11-13 |
Family
ID=7501129
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB2729161A Expired GB941657A (en) | 1960-07-28 | 1961-07-27 | Improvements in or relating to microphones |
Country Status (5)
Country | Link |
---|---|
BE (1) | BE606617A (en) |
CH (1) | CH396993A (en) |
DE (1) | DE1175746B (en) |
GB (1) | GB941657A (en) |
NL (1) | NL267357A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3624315A (en) * | 1967-01-23 | 1971-11-30 | Max E Broce | Transducer apparatus and transducer amplifier system utilizing insulated gate semiconductor field effect devices |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1235376B (en) * | 1963-08-24 | 1967-03-02 | Heinrich Peiker | Microphone in which the vibrational forces occurring on the membrane act on a transistor |
US3518508A (en) * | 1965-12-10 | 1970-06-30 | Matsushita Electric Ind Co Ltd | Transducer |
Family Cites Families (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
BE490715A (en) * | 1948-08-19 | |||
US2497770A (en) * | 1948-12-29 | 1950-02-14 | Bell Telephone Labor Inc | Transistor-microphone |
FR1011286A (en) * | 1949-01-08 | 1952-06-30 | ||
US2929885A (en) * | 1953-05-20 | 1960-03-22 | Rca Corp | Semiconductor transducers |
US2866014A (en) * | 1955-10-31 | 1958-12-23 | Bell Telephone Labor Inc | Piezoresistive acoustic transducer |
US2905771A (en) * | 1957-05-15 | 1959-09-22 | Bell Telephone Labor Inc | Piezoresistive semiconductor microphone |
-
0
- NL NL267357D patent/NL267357A/xx unknown
-
1960
- 1960-07-28 DE DES69642A patent/DE1175746B/en active Pending
-
1961
- 1961-06-23 CH CH735261A patent/CH396993A/en unknown
- 1961-07-27 BE BE606617A patent/BE606617A/en unknown
- 1961-07-27 GB GB2729161A patent/GB941657A/en not_active Expired
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3624315A (en) * | 1967-01-23 | 1971-11-30 | Max E Broce | Transducer apparatus and transducer amplifier system utilizing insulated gate semiconductor field effect devices |
Also Published As
Publication number | Publication date |
---|---|
BE606617A (en) | 1961-11-16 |
DE1175746B (en) | 1964-08-13 |
CH396993A (en) | 1965-08-15 |
NL267357A (en) |
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