BE488774A - - Google Patents
Info
- Publication number
- BE488774A BE488774A BE488774DA BE488774A BE 488774 A BE488774 A BE 488774A BE 488774D A BE488774D A BE 488774DA BE 488774 A BE488774 A BE 488774A
- Authority
- BE
- Belgium
Links
Classifications
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03F—AMPLIFIERS
- H03F3/00—Amplifiers with only discharge tubes or only semiconductor devices as amplifying elements
- H03F3/34—DC amplifiers in which all stages are DC-coupled
- H03F3/36—DC amplifiers in which all stages are DC-coupled with tubes only
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03F—AMPLIFIERS
- H03F3/00—Amplifiers with only discharge tubes or only semiconductor devices as amplifying elements
- H03F3/38—DC amplifiers with modulator at input and demodulator at output; Modulators or demodulators specially adapted for use in such amplifiers
- H03F3/40—DC amplifiers with modulator at input and demodulator at output; Modulators or demodulators specially adapted for use in such amplifiers with tubes only
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Amplifiers (AREA)
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR965955T | 1949-04-28 | ||
| FR1011936T | 1949-04-28 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| BE488774A true BE488774A (en:Method) |
Family
ID=26233238
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| BE488774D BE488774A (en:Method) | 1949-04-28 |
Country Status (5)
| Country | Link |
|---|---|
| BE (1) | BE488774A (en:Method) |
| CH (1) | CH283932A (en:Method) |
| FR (2) | FR965955A (en:Method) |
| GB (1) | GB669064A (en:Method) |
| NL (2) | NL76609C (en:Method) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2885497A (en) * | 1956-02-02 | 1959-05-05 | Alfred A Windsor | Drift compensated direct coupled amplifier |
| US2970266A (en) * | 1957-01-22 | 1961-01-31 | Beckman Instruments Inc | Self-zeroing amplifier |
| US3047797A (en) * | 1958-07-23 | 1962-07-31 | Shell Oil Co | Measuring conductivity of liquids |
| US3550013A (en) * | 1969-01-10 | 1970-12-22 | Gse Inc | Noise cancelling system |
-
0
- NL NL666601986A patent/NL146191B/xx unknown
- BE BE488774D patent/BE488774A/xx unknown
- NL NL76609D patent/NL76609C/xx active
-
1948
- 1948-04-30 FR FR965955D patent/FR965955A/fr not_active Expired
-
1949
- 1949-04-28 FR FR1011936D patent/FR1011936A/fr not_active Expired
- 1949-04-29 GB GB11460/49A patent/GB669064A/en not_active Expired
- 1949-04-29 CH CH283932D patent/CH283932A/fr unknown
Also Published As
| Publication number | Publication date |
|---|---|
| NL76609C (en:Method) | |
| FR965955A (fr) | 1950-09-27 |
| CH283932A (fr) | 1952-06-30 |
| FR1011936A (fr) | 1952-07-01 |
| GB669064A (en) | 1952-03-26 |
| NL146191B (nl) |