BE459654A - - Google Patents
Info
- Publication number
- BE459654A BE459654A BE459654DA BE459654A BE 459654 A BE459654 A BE 459654A BE 459654D A BE459654D A BE 459654DA BE 459654 A BE459654 A BE 459654A
- Authority
- BE
- Belgium
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
-
- 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 |
|---|---|
| BE459654A true BE459654A (OSRAM) | 1945-09-29 |
Family
ID=9554868
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| BE459654D BE459654A (OSRAM) | 1944-06-28 | 1945-08-11 |
Country Status (4)
| Country | Link |
|---|---|
| BE (1) | BE459654A (OSRAM) |
| ES (1) | ES172693A1 (OSRAM) |
| FR (1) | FR992526A (OSRAM) |
| LU (1) | LU27897A1 (OSRAM) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE69416129T2 (de) * | 1994-10-10 | 1999-07-01 | Endress + Hauser GmbH + Co., 79689 Maulburg | Ein Verfahren zum Betrieb eines Ultraschallwandlers und Schaltungsanordnung zur Durchführung des Verfahrens |
-
1944
- 1944-06-28 FR FR992526D patent/FR992526A/fr not_active Expired
-
1945
- 1945-08-11 BE BE459654D patent/BE459654A/xx unknown
-
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 |
| LU27897A1 (OSRAM) | 1946-04-11 |
| ES172693A1 (es) | 1946-04-01 |