BE450187A - - Google Patents
Info
- Publication number
- BE450187A BE450187A BE450187DA BE450187A BE 450187 A BE450187 A BE 450187A BE 450187D A BE450187D A BE 450187DA BE 450187 A BE450187 A BE 450187A
- Authority
- BE
- Belgium
Links
Classifications
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03D—DEMODULATION OR TRANSFERENCE OF MODULATION FROM ONE CARRIER TO ANOTHER
- H03D7/00—Transference of modulation from one carrier to another, e.g. frequency-changing
- H03D7/06—Transference of modulation from one carrier to another, e.g. frequency-changing by means of discharge tubes having more than two electrodes
- H03D7/10—Transference of modulation from one carrier to another, e.g. frequency-changing by means of discharge tubes having more than two electrodes the signals to be mixed being applied between different pairs of electrodes
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03D—DEMODULATION OR TRANSFERENCE OF MODULATION FROM ONE CARRIER TO ANOTHER
- H03D7/00—Transference of modulation from one carrier to another, e.g. frequency-changing
- H03D7/06—Transference of modulation from one carrier to another, e.g. frequency-changing by means of discharge tubes having more than two electrodes
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03F—AMPLIFIERS
- H03F1/00—Details of amplifiers with only discharge tubes, only semiconductor devices or only unspecified devices as amplifying elements
- H03F1/26—Modifications of amplifiers to reduce influence of noise generated by amplifying elements
- H03F1/28—Modifications of amplifiers to reduce influence of noise generated by amplifying elements in discharge-tube amplifiers
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Superheterodyne Receivers (AREA)
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| NL245848X | 1942-04-16 | ||
| NL2486076X | 1943-02-23 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| BE450187A true BE450187A (ko) |
Family
ID=32232797
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| BE450187D BE450187A (ko) | 1942-04-16 |
Country Status (6)
| Country | Link |
|---|---|
| US (1) | US2486076A (ko) |
| BE (1) | BE450187A (ko) |
| CH (1) | CH245848A (ko) |
| FR (2) | FR894004A (ko) |
| GB (1) | GB613681A (ko) |
| NL (1) | NL60694C (ko) |
Families Citing this family (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| NL70859C (ko) * | 1947-08-14 | |||
| BE484503A (ko) * | 1947-08-25 | |||
| US2662939A (en) * | 1949-04-02 | 1953-12-15 | Nowak Karl | High selectivity amplifier |
| US2659776A (en) * | 1949-05-13 | 1953-11-17 | Nowak Karl | Selective receiving and amplifying circuit |
| US2662172A (en) * | 1950-02-21 | 1953-12-08 | Sperry Prod Inc | Oscillator cancellation frequency converter |
| US2713118A (en) * | 1951-05-04 | 1955-07-12 | Robert W Hart | Communication system |
| US2963660A (en) * | 1954-04-02 | 1960-12-06 | Northrop Corp | Signal frequency converter |
| DE1081514B (de) * | 1957-02-05 | 1960-05-12 | Deutsche Bundespost | Breitbandverstaerkerstufe |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB509398A (en) * | 1937-12-14 | 1939-07-14 | James Robinson | Improvements in retroactive valve apparatus |
| US2227604A (en) * | 1938-01-29 | 1941-01-07 | Rca Corp | Ultra high frequency device |
| US2256067A (en) * | 1938-05-27 | 1941-09-16 | Rca Corp | Receiver selectivity control |
-
0
- BE BE450187D patent/BE450187A/xx unknown
- NL NL60694D patent/NL60694C/xx active
-
1943
- 1943-04-14 FR FR894004D patent/FR894004A/fr not_active Expired
- 1943-04-14 CH CH245848D patent/CH245848A/de unknown
-
1944
- 1944-02-21 FR FR53342D patent/FR53342E/fr not_active Expired
-
1946
- 1946-06-26 GB GB19079/46A patent/GB613681A/en not_active Expired
- 1946-09-18 US US697769A patent/US2486076A/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| FR53342E (fr) | 1945-10-16 |
| GB613681A (en) | 1948-12-01 |
| US2486076A (en) | 1949-10-25 |
| NL60694C (ko) | |
| CH245848A (de) | 1946-11-30 |
| FR894004A (fr) | 1944-12-12 |