BE477233A - - Google Patents
Info
- Publication number
- BE477233A BE477233A BE477233DA BE477233A BE 477233 A BE477233 A BE 477233A BE 477233D A BE477233D A BE 477233DA BE 477233 A BE477233 A BE 477233A
- Authority
- BE
- Belgium
Links
Classifications
-
- 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
- H03B5/08—Generation of oscillations using amplifier with regenerative feedback from output to input with frequency-determining element comprising lumped inductance and capacitance
- H03B5/10—Generation of oscillations using amplifier with regenerative feedback from output to input with frequency-determining element comprising lumped inductance and capacitance active element in amplifier being vacuum tube
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- 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
- H03F1/42—Modifications of amplifiers to extend the bandwidth
- H03F1/48—Modifications of amplifiers to extend the bandwidth of aperiodic amplifiers
- H03F1/50—Modifications of amplifiers to extend the bandwidth of aperiodic amplifiers with tubes only
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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
- H03F3/46—Reflex amplifiers
- H03F3/48—Reflex amplifiers with tubes only
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03F—AMPLIFIERS
- H03F3/00—Amplifiers with only discharge tubes or only semiconductor devices as amplifying elements
- H03F3/66—Amplifiers simultaneously generating oscillations of one frequency and amplifying signals of another frequency
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
- H04B1/06—Receivers
- H04B1/16—Circuits
- H04B1/26—Circuits for superheterodyne receivers
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04J—MULTIPLEX COMMUNICATION
- H04J1/00—Frequency-division multiplex systems
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Input Circuits Of Receivers And Coupling Of Receivers And Audio Equipment (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB250786X | 1944-09-01 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| BE477233A true BE477233A (en:Method) |
Family
ID=10221852
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| BE477233D BE477233A (en:Method) | 1944-09-01 |
Country Status (4)
| Country | Link |
|---|---|
| US (1) | US2474978A (en:Method) |
| BE (1) | BE477233A (en:Method) |
| CH (1) | CH250786A (en:Method) |
| FR (1) | FR939230A (en:Method) |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2541818A (en) * | 1948-12-18 | 1951-02-13 | Gen Electric | Radio receiver |
| US2684402A (en) * | 1949-12-31 | 1954-07-20 | Stromberg Carlson Co | Dual-purpose carrier-wave receiver |
| US2771548A (en) * | 1952-07-08 | 1956-11-20 | Polytechnic Res & Dev Co Inc | Receiver tunable over v. h. f. and u. h. f. television bands |
| DE1022275B (de) * | 1953-11-14 | 1958-01-09 | Siemens Elektrogeraete Gmbh | Verfahren und Einrichtung zum Empfang von ueber getrennte modulierte Traegerwellen stereophonisch uebertragenen Schallsendungen |
| US3080532A (en) * | 1960-01-14 | 1963-03-05 | Collins Radio Co | Voltage variable gain circuit with gate correction |
| NL282484A (en:Method) * | 1961-08-25 |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| NL38500C (en:Method) * | 1932-07-24 | |||
| US2058512A (en) * | 1934-05-28 | 1936-10-27 | Rca Corp | Radio receiver |
| US2201365A (en) * | 1938-07-13 | 1940-05-21 | Hazeltine Corp | Duplex vacuum-tube repeater |
| US2189317A (en) * | 1938-08-31 | 1940-02-06 | Rca Corp | Diversity antenna system |
| US2257782A (en) * | 1939-01-24 | 1941-10-07 | Radio Patents Corp | Amplifier |
| GB538674A (en) * | 1940-04-01 | 1941-08-12 | Gen Electric Co Ltd | Improvements in electrical oscillators comprising thermionic valves |
-
0
- BE BE477233D patent/BE477233A/xx unknown
-
1945
- 1945-08-18 US US611378A patent/US2474978A/en not_active Expired - Lifetime
- 1945-08-31 CH CH250786D patent/CH250786A/de unknown
-
1946
- 1946-08-26 FR FR939230D patent/FR939230A/fr not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| US2474978A (en) | 1949-07-05 |
| FR939230A (fr) | 1948-11-08 |
| CH250786A (de) | 1947-09-15 |