BE353651A - - Google Patents
Info
- Publication number
- BE353651A BE353651A BE353651DA BE353651A BE 353651 A BE353651 A BE 353651A BE 353651D A BE353651D A BE 353651DA BE 353651 A BE353651 A BE 353651A
- Authority
- BE
- Belgium
Links
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R9/00—Instruments employing mechanical resonance
- G01R9/04—Instruments employing mechanical resonance using vibrating reeds, e.g. for measuring frequency
- G01R9/08—Instruments employing mechanical resonance using vibrating reeds, e.g. for measuring frequency piezoelectrically driven
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J17/00—Gas-filled discharge tubes with solid cathode
- H01J17/02—Details
- H01J17/34—One or more circuit elements structurally associated with the tube
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J19/00—Details of vacuum tubes of the types covered by group H01J21/00
- H01J19/78—One or more circuit elements structurally associated with the tube
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- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03F—AMPLIFIERS
- H03F3/00—Amplifiers with only discharge tubes or only semiconductor devices as amplifying elements
- H03F3/02—Amplifiers with only discharge tubes or only semiconductor devices as amplifying elements with tubes only
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03F—AMPLIFIERS
- H03F3/00—Amplifiers with only discharge tubes or only semiconductor devices as amplifying elements
- H03F3/189—High-frequency amplifiers, e.g. radio frequency amplifiers
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- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03F—AMPLIFIERS
- H03F99/00—Subject matter not provided for in other groups of this subclass
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Amplifiers (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US21456127A | 1927-08-22 | 1927-08-22 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| BE353651A true BE353651A (xx) |
Family
ID=22799556
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| BE353651D BE353651A (xx) | 1927-08-22 |
Country Status (3)
| Country | Link |
|---|---|
| BE (1) | BE353651A (xx) |
| FR (1) | FR658399A (xx) |
| GB (1) | GB295997A (xx) |
-
0
- BE BE353651D patent/BE353651A/xx unknown
-
1928
- 1928-07-30 FR FR658399D patent/FR658399A/fr not_active Expired
- 1928-08-15 GB GB23523/28A patent/GB295997A/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| GB295997A (en) | 1929-04-18 |
| FR658399A (fr) | 1929-06-14 |