GB1209647A - Electro-mechanical transducer element - Google Patents
Electro-mechanical transducer elementInfo
- Publication number
- GB1209647A GB1209647A GB52091/67A GB5209167A GB1209647A GB 1209647 A GB1209647 A GB 1209647A GB 52091/67 A GB52091/67 A GB 52091/67A GB 5209167 A GB5209167 A GB 5209167A GB 1209647 A GB1209647 A GB 1209647A
- Authority
- GB
- United Kingdom
- Prior art keywords
- pressure
- semi
- nov
- gold
- heterojunction
- 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
- H04R23/00—Transducers other than those covered by groups H04R9/00 - H04R21/00
- H04R23/006—Transducers other than those covered by groups H04R9/00 - H04R21/00 using solid state devices
Landscapes
- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Acoustics & Sound (AREA)
- Signal Processing (AREA)
- Pressure Sensors (AREA)
- Measuring Fluid Pressure (AREA)
Abstract
1,209,647. Heterojunction pressure transducers. MATSUSHITA ELECTRIC INDUSTRIAL CO. Ltd. 15 Nov., 1967 [28 Nov., 1966 (2)], No. 52091/67. Heading H1K. A pressure transducer has pressure applied to a semi-conductor heterojunction which incorporates deep level impurities to enhance its sensitivity, the electrical output being taken across the junction from ohmic or rectifying contacts. As shown, a 20 ohm/cm. N-type silicon body 11 bears a vapour-deposited layer of gallium arsenide. Gold (a deep level impurity) is diffused into the junction region from both sides of the structure. Ohmic contact is made to the silicon by gold-antimony and to the gallium arsenide by tin. Pressure is applied by a rod 15. Alternative semi-conductors include germanium, gallium antimonide, indium arsenide and cadmium sulphide. Reactions in the vapour phase or in the liquid phase may be used to deposit semi-conductor layers.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7855166 | 1966-11-28 | ||
| JP7855066 | 1966-11-28 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB1209647A true GB1209647A (en) | 1970-10-21 |
Family
ID=26419610
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB52091/67A Expired GB1209647A (en) | 1966-11-28 | 1967-11-15 | Electro-mechanical transducer element |
Country Status (3)
| Country | Link |
|---|---|
| DE (1) | DE1648625B2 (en) |
| GB (1) | GB1209647A (en) |
| NL (1) | NL152741B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2064873B (en) * | 1979-11-26 | 1984-09-05 | Eventoff Franklin Neal | Pressure sensitive electric switch |
| DE4238545A1 (en) * | 1992-11-14 | 1994-05-19 | Daimler Benz Ag | Pressure sensor e.g. for diesel engine, high-pressure lines or industrial processes - comprises heterostructure semiconductor diode with double barrier resonant tunnel or simple barrier tunnel structure |
-
1967
- 1967-11-15 GB GB52091/67A patent/GB1209647A/en not_active Expired
- 1967-11-17 DE DE19671648625 patent/DE1648625B2/en active Pending
- 1967-11-24 NL NL676716010A patent/NL152741B/en unknown
Also Published As
| Publication number | Publication date |
|---|---|
| NL6716010A (en) | 1968-05-29 |
| NL152741B (en) | 1977-03-15 |
| DE1648625B2 (en) | 1971-10-21 |
| DE1648625A1 (en) | 1971-02-25 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PS | Patent sealed [section 19, patents act 1949] | ||
| PCNP | Patent ceased through non-payment of renewal fee |