GB533204A - Piezoelectric apparatus - Google Patents
Piezoelectric apparatusInfo
- Publication number
- GB533204A GB533204A GB28131/39A GB2813139A GB533204A GB 533204 A GB533204 A GB 533204A GB 28131/39 A GB28131/39 A GB 28131/39A GB 2813139 A GB2813139 A GB 2813139A GB 533204 A GB533204 A GB 533204A
- Authority
- GB
- United Kingdom
- Prior art keywords
- crystal
- supported
- bars
- piezo
- screws
- 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
- 239000013078 crystal Substances 0.000 abstract 4
- FEWJPZIEWOKRBE-JCYAYHJZSA-N Dextrotartaric acid Chemical compound OC(=O)[C@H](O)[C@@H](O)C(O)=O FEWJPZIEWOKRBE-JCYAYHJZSA-N 0.000 abstract 1
- DGAQECJNVWCQMB-PUAWFVPOSA-M Ilexoside XXIX Chemical compound C[C@@H]1CC[C@@]2(CC[C@@]3(C(=CC[C@H]4[C@]3(CC[C@@H]5[C@@]4(CC[C@@H](C5(C)C)OS(=O)(=O)[O-])C)C)[C@@H]2[C@]1(C)O)C)C(=O)O[C@H]6[C@@H]([C@H]([C@@H]([C@H](O6)CO)O)O)O.[Na+] DGAQECJNVWCQMB-PUAWFVPOSA-M 0.000 abstract 1
- 229910001030 Iron–nickel alloy Inorganic materials 0.000 abstract 1
- 239000002131 composite material Substances 0.000 abstract 1
- LJCNRYVRMXRIQR-OLXYHTOASA-L potassium sodium L-tartrate Chemical compound [Na+].[K+].[O-]C(=O)[C@H](O)[C@@H](O)C([O-])=O LJCNRYVRMXRIQR-OLXYHTOASA-L 0.000 abstract 1
- 238000000926 separation method Methods 0.000 abstract 1
- 229910052708 sodium Inorganic materials 0.000 abstract 1
- 239000011734 sodium Substances 0.000 abstract 1
- 235000011006 sodium potassium tartrate Nutrition 0.000 abstract 1
- 229940095064 tartrate Drugs 0.000 abstract 1
Classifications
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
- H03H9/00—Networks comprising electromechanical or electro-acoustic devices; Electromechanical resonators
- H03H9/15—Constructional features of resonators consisting of piezoelectric or electrostrictive material
- H03H9/17—Constructional features of resonators consisting of piezoelectric or electrostrictive material having a single resonator
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
- H03H9/00—Networks comprising electromechanical or electro-acoustic devices; Electromechanical resonators
- H03H9/02—Details
- H03H9/05—Holders; Supports
- H03H9/08—Holders with means for regulating temperature
Abstract
533,204. Piezo-electric crystals. STANDARD TELEPHONES & CABLES, Ltd. Oct. 18, 1939, No. 28131. Convention date, Nov. 3, 1938. [Class 40 (v)] The temperature co-efficient of a piezo-electric element is reduced by combining it with a non-piezoelectric loading means of suitable dimensions and opposite temperature co-efficient. In Fig. 2, loading bars 3, 4 of nickel iron alloy are formed with integral extensions 5 for close attachment to a crystal 2. The points of attachment are made at antinodes of the system to reduce the tendency to separation and the system is supported at nodal points on the bars 3, 4. In Fig. 5, the loading bars 6, 7 are connected by a thin web 15 to opposite sides of which crystal plates 16, 17 are glued, the device being supported by screws at the nodal points. Fig. 6 shows an arrangement in which a composite vibrator 20, 21, 22 is adjustably supported by screws between adjustable electrode plates 18, 19. In all cases the crystal may be of Rochelle salt, the curie point of which is reduced by the addition of a small percentage of sodium rabidium tartrate. Specification 475,275 is referred to.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US238530A US2202391A (en) | 1938-11-03 | 1938-11-03 | Piezoelectric apparatus |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB533204A true GB533204A (en) | 1941-02-07 |
Family
ID=22898307
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB28131/39A Expired GB533204A (en) | 1938-11-03 | 1939-10-18 | Piezoelectric apparatus |
Country Status (4)
| Country | Link |
|---|---|
| US (1) | US2202391A (en) |
| FR (1) | FR862048A (en) |
| GB (1) | GB533204A (en) |
| NL (1) | NL64738C (en) |
Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2803803A (en) * | 1957-08-20 | Electric | ||
| US2753529A (en) * | 1955-07-28 | 1956-07-03 | Rca Corp | Electromechanical resonator |
| US2978597A (en) * | 1956-03-14 | 1961-04-04 | Harris Transducer Corp | Circuit element transducer |
| US3123727A (en) * | 1960-06-15 | 1964-03-03 | Kritz | |
| US3225226A (en) * | 1961-09-08 | 1965-12-21 | Toko Radio Coil Kenkyusho Kk | Electrical vibrator |
| JPS58137317A (en) * | 1982-02-09 | 1983-08-15 | Nec Corp | Thin-film piezoelectric compound oscillator |
| US20050151443A1 (en) * | 2002-10-21 | 2005-07-14 | Lockheed Martin Corporation | Piezoelectric micro positioner for large temperature range |
-
1938
- 1938-11-03 US US238530A patent/US2202391A/en not_active Expired - Lifetime
-
1939
- 1939-10-18 GB GB28131/39A patent/GB533204A/en not_active Expired
- 1939-11-03 NL NL95757A patent/NL64738C/xx active
- 1939-12-01 FR FR862048D patent/FR862048A/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| US2202391A (en) | 1940-05-28 |
| FR862048A (en) | 1941-02-25 |
| NL64738C (en) | 1949-11-15 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| GB533204A (en) | Piezoelectric apparatus | |
| GB1041263A (en) | Improvements in or relating to piezoelectric oscillators | |
| US2411146A (en) | Sound signaling apparatus | |
| GB553050A (en) | Piezoelectric crystal elements | |
| GB980524A (en) | Improvements in sonic transducers | |
| GB1333644A (en) | Noise making device | |
| GB553121A (en) | Piezoelectric crystal apparatus | |
| GB641470A (en) | Piezoelectric crystal elements | |
| GB631348A (en) | Improvements in piezoelectric crystal elements and apparatus | |
| GB554789A (en) | Rochelle salt piezoelectric crystal apparatus | |
| GB466212A (en) | Improvements in or relating to the generation of mechanical waves of supersonic frequency | |
| GB1073600A (en) | Improvements in or relating to piezo-electric devices comprising first and second piezo-electric elements | |
| GB502075A (en) | Improvements in means for supporting piezo-electric vibrating elements | |
| ES321223A1 (en) | Transducer having mechanical impedance matching between air and the driver | |
| GB535507A (en) | Piezo-electric devices | |
| GB814123A (en) | Improvements in or relating to electro-mechanical crystal transducer elements exhibiting piezo electricity or ferro electricity | |
| GB552835A (en) | Piezoelectric crystal apparatus | |
| GB619679A (en) | Improvements in or relating to piezoelectric vibrator | |
| GB549594A (en) | Piezoelectric crystal apparatus | |
| GB559502A (en) | Improvements relating to the manufacture of electrodes for use with piezo-electric crystals | |
| GB625188A (en) | Improvements in or relating to the mounting of piezo-electric crystals | |
| GB631346A (en) | Piezoelectric crystal elements and apparatus | |
| GB801471A (en) | Piezodynamic relay | |
| GB906658A (en) | Piezoelectric quartz device | |
| GB650796A (en) | Piezoelectric crystal elements |