GB1073964A - Improvements in or relating to electromechanical oscillators - Google Patents
Improvements in or relating to electromechanical oscillatorsInfo
- Publication number
- GB1073964A GB1073964A GB3157366A GB3157366A GB1073964A GB 1073964 A GB1073964 A GB 1073964A GB 3157366 A GB3157366 A GB 3157366A GB 3157366 A GB3157366 A GB 3157366A GB 1073964 A GB1073964 A GB 1073964A
- Authority
- GB
- United Kingdom
- Prior art keywords
- crystals
- pair
- divided
- resonator
- polarization
- 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 9
- 229910000831 Steel Inorganic materials 0.000 abstract 2
- 230000010355 oscillation Effects 0.000 abstract 2
- 230000010287 polarization Effects 0.000 abstract 2
- 239000010959 steel Substances 0.000 abstract 2
- 238000005452 bending Methods 0.000 abstract 1
- 238000010276 construction Methods 0.000 abstract 1
- 230000007935 neutral effect Effects 0.000 abstract 1
- 230000003071 parasitic effect Effects 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
- 229910052709 silver Inorganic materials 0.000 abstract 1
- 239000004332 silver Substances 0.000 abstract 1
- 230000001629 suppression Effects 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
- H03H9/21—Crystal tuning forks
-
- 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
Landscapes
- Physics & Mathematics (AREA)
- Acoustics & Sound (AREA)
- Chemical & Material Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Piezo-Electric Or Mechanical Vibrators, Or Delay Or Filter Circuits (AREA)
- Control Of Motors That Do Not Use Commutators (AREA)
Abstract
1,073,964. Electromechanical oscillators and filters. SIEMENS A.G. May 20, 1964, No. 31573/66. Divided out of 1,073,962. Heading H3U. A mechanical resonator oscillating in the bending mode carries two piezoelectrio crystals having their planes perpendicular to the longitudinal axis of the resonator, being located predominantly in a region bounded by two adjacent nodes of oscillation, one crystal on each side of the neutral axis of the oscillator, and being mutually oppositely polarized, the crystals being arranged to divide the resonator into two distinct parts. In Fig. 1, steel bars 1, 2 are united by two crystals 3, 4 which are soldered to the bars via layers of silver used for applying the polarizing voltages. A gap S prevents parasitic oscillations and permits the directions of polarization to be opposite. Further resonators can be attached at the nodes 7, 8 to provide a multistage filter. A quadripole element can be obtained by including a second pair of crystals in a further gap in the bar (Fig. 3, not shown). This pair may or may not be of the same thickness as the first pair. The phase of the output then depends on the relative directions of polarization of the two pairs of crystals. Alternatively, the crystals can be divided by a conducting layer in a plane at right angles to the axis of the bar (Fig. 4, not shown). In another form of construction (Fig. 8, not shown) pairs of crystals are included in one or both arms of a tuning fork. These crystals may be divided by a conducting, layer as in Fig. 4. The resonating member may be of quartz instead of steel and may be of circular instead of rectangular cross-section. Harmonic suppression using the arrangement of the invention is described in Specification 1,073,962.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DES0114405 | 1963-05-21 | ||
DE1963S0085316 DE1280988B (en) | 1963-05-21 | 1963-05-21 | Mechanical flexural oscillator |
Publications (1)
Publication Number | Publication Date |
---|---|
GB1073964A true GB1073964A (en) | 1967-06-28 |
Family
ID=35169661
Family Applications (2)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB3157366A Expired GB1073964A (en) | 1963-05-21 | 1964-05-20 | Improvements in or relating to electromechanical oscillators |
GB2071264A Expired GB1073962A (en) | 1963-05-21 | 1964-05-20 | Improvements in or relating to electromechanical oscillators |
Family Applications After (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB2071264A Expired GB1073962A (en) | 1963-05-21 | 1964-05-20 | Improvements in or relating to electromechanical oscillators |
Country Status (7)
Country | Link |
---|---|
BE (1) | BE648207A (en) |
CH (1) | CH424010A (en) |
DE (2) | DE1203321B (en) |
FR (1) | FR1395158A (en) |
GB (2) | GB1073964A (en) |
NL (1) | NL144457B (en) |
SE (1) | SE315052B (en) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2549657B1 (en) * | 1983-07-22 | 1985-10-04 | Thomson Csf | ELECTROMECHANICAL TRANSDUCER DEVICE FOR THE GENERATION AND DETECTION OF ELASTIC WAVES IN A PLATE |
Family Cites Families (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US1781513A (en) * | 1928-05-15 | 1930-11-11 | Ets Edouard Belin | Electrical tuning fork |
AT224163B (en) * | 1960-04-07 | 1962-11-12 | Western Electric Co | Piezoelectric device |
-
1962
- 1962-09-12 DE DES81418A patent/DE1203321B/en active Granted
-
1963
- 1963-05-21 DE DE1963S0085316 patent/DE1280988B/en active Pending
-
1964
- 1964-04-10 SE SE4486/64A patent/SE315052B/xx unknown
- 1964-04-21 NL NL6404357A patent/NL144457B/en unknown
- 1964-04-22 FR FR971886A patent/FR1395158A/en not_active Expired
- 1964-05-20 GB GB3157366A patent/GB1073964A/en not_active Expired
- 1964-05-20 GB GB2071264A patent/GB1073962A/en not_active Expired
- 1964-05-21 CH CH663464A patent/CH424010A/en unknown
- 1964-05-21 BE BE648207D patent/BE648207A/xx unknown
Also Published As
Publication number | Publication date |
---|---|
GB1073962A (en) | 1967-06-28 |
SE315052B (en) | 1969-09-22 |
DE1280988B (en) | 1968-10-24 |
NL6404357A (en) | 1964-11-23 |
CH424010A (en) | 1966-11-15 |
DE1203321B (en) | 1965-10-21 |
FR1395158A (en) | 1965-04-09 |
NL144457B (en) | 1974-12-16 |
DE1203321C2 (en) | 1966-05-18 |
BE648207A (en) | 1964-11-23 |
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