GB848028A - Improvements in or relating to piezo-electric crystal units - Google Patents
Improvements in or relating to piezo-electric crystal unitsInfo
- Publication number
- GB848028A GB848028A GB3999857A GB3999857A GB848028A GB 848028 A GB848028 A GB 848028A GB 3999857 A GB3999857 A GB 3999857A GB 3999857 A GB3999857 A GB 3999857A GB 848028 A GB848028 A GB 848028A
- Authority
- GB
- United Kingdom
- Prior art keywords
- condenser
- piezo
- envelope
- relating
- resonator
- 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 4
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 abstract 2
- 239000010931 gold Substances 0.000 abstract 2
- 229910052737 gold Inorganic materials 0.000 abstract 2
- 238000005259 measurement Methods 0.000 abstract 1
- 238000000034 method Methods 0.000 abstract 1
- 238000012986 modification Methods 0.000 abstract 1
- 230000004048 modification Effects 0.000 abstract 1
- 238000007789 sealing Methods 0.000 abstract 1
- 239000007787 solid Substances 0.000 abstract 1
- 238000009966 trimming Methods 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
Landscapes
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Piezo-Electric Or Mechanical Vibrators, Or Delay Or Filter Circuits (AREA)
- Investigating Or Analyzing Materials By The Use Of Electric Means (AREA)
Abstract
848,028. Piezo-electric crystals. MARCONI'S WIRELESS TELEGRAPH CO. Ltd. Oct. 17, 1958 [Dec. 24, 1957], No. 39998/57. Class 40(8). A piezo-electric resonator is tuned to a desired frequency by means of a trimming condenser which is adjusted before the resonator, together with the condenser, is hermetically sealed in an envelope. An electroded crystal plate 1 and a condenser 14 connected in series or parallel with the crystal are mounted within an envelope 13 provided with exhaust tubulation 16, 18. The condenser is of the type having deposited gold electrodes and the capacitance is adjusted by increasing the area of one of the electrodes. To do this, gold is vaporized from a filament 20 whilst frequency measurements are made. The envelope is subsequently sealed off at the tube 16. In a modification (Fig. 1, not shown), the condenser is of the movable vane type having air or solid dielectric. It is so arranged that adjustment is possible by inserting a screwdriver through the exhaust tubulation before the pumping-out and sealing process.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB3999857A GB848028A (en) | 1957-12-24 | 1957-12-24 | Improvements in or relating to piezo-electric crystal units |
| DEM39913A DE1202351B (en) | 1957-12-24 | 1958-12-11 | Component with a piezoelectric body in an evacuable vessel |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB3999857A GB848028A (en) | 1957-12-24 | 1957-12-24 | Improvements in or relating to piezo-electric crystal units |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB848028A true GB848028A (en) | 1960-09-14 |
Family
ID=10412636
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB3999857A Expired GB848028A (en) | 1957-12-24 | 1957-12-24 | Improvements in or relating to piezo-electric crystal units |
Country Status (2)
| Country | Link |
|---|---|
| DE (1) | DE1202351B (en) |
| GB (1) | GB848028A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1289136B (en) * | 1967-11-20 | 1969-02-13 | Siemens Ag | Electromechanical converter for converting electrical vibrations into mechanical vibrations |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB460087A (en) * | 1935-10-16 | 1937-01-20 | Telefunken Gmbh | Improvements in or relating to piezo-electric crystal mounting arrangements |
| NL133060B (en) * | 1944-03-28 | |||
| DE872966C (en) * | 1951-01-26 | 1953-04-09 | Quarzkeramik G M B H | Frequency adjustment of oscillating crystals |
| DE1700512U (en) * | 1952-07-25 | 1955-06-16 | Telefunken Gmbh | PIEZOELECTRIC SWITCHING ELEMENT. |
| US2765765A (en) * | 1952-09-03 | 1956-10-09 | Robert R Bigler | Apparatus for the manufacture of piezoelectric crystals |
-
1957
- 1957-12-24 GB GB3999857A patent/GB848028A/en not_active Expired
-
1958
- 1958-12-11 DE DEM39913A patent/DE1202351B/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1289136B (en) * | 1967-11-20 | 1969-02-13 | Siemens Ag | Electromechanical converter for converting electrical vibrations into mechanical vibrations |
Also Published As
| Publication number | Publication date |
|---|---|
| DE1202351B (en) | 1965-10-07 |
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