LU27897A1 - - Google Patents
Info
- Publication number
- LU27897A1 LU27897A1 LU27897DA LU27897A1 LU 27897 A1 LU27897 A1 LU 27897A1 LU 27897D A LU27897D A LU 27897DA LU 27897 A1 LU27897 A1 LU 27897A1
- Authority
- LU
- Luxembourg
Links
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
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- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03B—GENERATION OF OSCILLATIONS, DIRECTLY OR BY FREQUENCY-CHANGING, BY CIRCUITS EMPLOYING ACTIVE ELEMENTS WHICH OPERATE IN A NON-SWITCHING MANNER; GENERATION OF NOISE BY SUCH CIRCUITS
- H03B5/00—Generation of oscillations using amplifier with regenerative feedback from output to input
- H03B5/30—Generation of oscillations using amplifier with regenerative feedback from output to input with frequency-determining element being electromechanical resonator
- H03B5/32—Generation of oscillations using amplifier with regenerative feedback from output to input with frequency-determining element being electromechanical resonator being a piezoelectric resonator
- H03B5/34—Generation of oscillations using amplifier with regenerative feedback from output to input with frequency-determining element being electromechanical resonator being a piezoelectric resonator active element in amplifier being vacuum tube
Landscapes
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR992526T | 1944-06-28 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| LU27897A1 true LU27897A1 (en:Method) | 1946-04-11 |
Family
ID=9554868
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| LU27897D LU27897A1 (en:Method) | 1944-06-28 | 1946-02-13 |
Country Status (4)
| Country | Link |
|---|---|
| BE (1) | BE459654A (en:Method) |
| ES (1) | ES172693A1 (en:Method) |
| FR (1) | FR992526A (en:Method) |
| LU (1) | LU27897A1 (en:Method) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0706835B1 (en) * | 1994-10-10 | 1999-01-20 | Endress + Hauser GmbH + Co. | Method of operating an ultrasonic piezoelectric transducer and circuit arrangement for performing the method |
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1944
- 1944-06-28 FR FR992526D patent/FR992526A/fr not_active Expired
-
1945
- 1945-08-11 BE BE459654D patent/BE459654A/xx unknown
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1946
- 1946-02-13 LU LU27897D patent/LU27897A1/fr unknown
- 1946-02-26 ES ES172693A patent/ES172693A1/es not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| FR992526A (fr) | 1951-10-19 |
| ES172693A1 (es) | 1946-04-01 |
| BE459654A (en:Method) | 1945-09-29 |