GB1432519A - Piezeoelectric crystal - Google Patents
Piezeoelectric crystalInfo
- Publication number
- GB1432519A GB1432519A GB3777074A GB3777074A GB1432519A GB 1432519 A GB1432519 A GB 1432519A GB 3777074 A GB3777074 A GB 3777074A GB 3777074 A GB3777074 A GB 3777074A GB 1432519 A GB1432519 A GB 1432519A
- Authority
- GB
- United Kingdom
- Prior art keywords
- electrodes
- resistance
- piezo
- electric
- total loss
- 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 title abstract 2
- 239000011195 cermet Substances 0.000 abstract 1
- 238000007373 indentation Methods 0.000 abstract 1
- 230000004048 modification Effects 0.000 abstract 1
- 238000012986 modification Methods 0.000 abstract 1
- 150000004767 nitrides Chemical class 0.000 abstract 1
- 239000010453 quartz Substances 0.000 abstract 1
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N silicon dioxide Inorganic materials O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 abstract 1
Classifications
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
- H03H3/00—Apparatus or processes specially adapted for the manufacture of impedance networks, resonating circuits, resonators
- H03H3/007—Apparatus or processes specially adapted for the manufacture of impedance networks, resonating circuits, resonators for the manufacture of electromechanical resonators or networks
- H03H3/02—Apparatus or processes specially adapted for the manufacture of impedance networks, resonating circuits, resonators for the manufacture of electromechanical resonators or networks for the manufacture of piezoelectric or electrostrictive resonators or networks
- H03H3/04—Apparatus or processes specially adapted for the manufacture of impedance networks, resonating circuits, resonators for the manufacture of electromechanical resonators or networks for the manufacture of piezoelectric or electrostrictive resonators or networks for obtaining desired frequency or temperature coefficient
-
- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10N—ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10N30/00—Piezoelectric or electrostrictive devices
- H10N30/80—Constructional details
- H10N30/87—Electrodes or interconnections, e.g. leads or terminals
- H10N30/877—Conductive materials
- H10N30/878—Conductive materials the principal material being non-metallic, e.g. oxide or carbon based
Abstract
1432519 Piezo-electric resonator INTERNATIONAL STANDARD ELECTRIC CORP 29 Aug 1974 [6 Sept 1973] 37770/74 Heading H1E The equivalent circuit of a piezo-electric (e.g. quartz) plate-like vibrator with face electrodes (Fig. 1, not shown), vibrating in a longitudinal mode, comprises elements as shown, with total loss resistance R1 made up of the equivalent crystal resistance Rq having a significant temperature coefficient and Re the inherent resistance of the electrodes which may have a low TC and a value high enough to swamp Rq, making the combined TC negligible, or a TC opposite in sign to that of Rq and a value chosen to zeroize the overall TC. With the usual positive TC of Rq, the electrodes may be made of, e.g. Ta nitride vapour deposited to have negative TC or a cermet such as CrSiO. The edges of the electrodes may be indented to allow later adjustment by modification of the indentations. Attenuation due to the total loss resistance is compensated by the amplifier following (not shown).
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE2344892A DE2344892C2 (en) | 1973-09-06 | 1973-09-06 | Piezoelectric transducer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB1432519A true GB1432519A (en) | 1976-04-22 |
Family
ID=5891769
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB3777074A Expired GB1432519A (en) | 1973-09-06 | 1974-08-29 | Piezeoelectric crystal |
Country Status (5)
| Country | Link |
|---|---|
| JP (1) | JPS5322439B2 (en) |
| DE (1) | DE2344892C2 (en) |
| FR (1) | FR2243549B1 (en) |
| GB (1) | GB1432519A (en) |
| IT (1) | IT1020429B (en) |
-
1973
- 1973-09-06 DE DE2344892A patent/DE2344892C2/en not_active Expired
-
1974
- 1974-08-29 GB GB3777074A patent/GB1432519A/en not_active Expired
- 1974-09-04 IT IT26903/74A patent/IT1020429B/en active
- 1974-09-05 FR FR7430160A patent/FR2243549B1/fr not_active Expired
- 1974-09-06 JP JP10216774A patent/JPS5322439B2/ja not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| JPS5074393A (en) | 1975-06-19 |
| FR2243549A1 (en) | 1975-04-04 |
| FR2243549B1 (en) | 1979-05-11 |
| DE2344892C2 (en) | 1974-12-19 |
| DE2344892B1 (en) | 1974-04-25 |
| IT1020429B (en) | 1977-12-20 |
| JPS5322439B2 (en) | 1978-07-08 |
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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 |