BE518135A - - Google Patents
Info
- Publication number
- BE518135A BE518135A BE518135DA BE518135A BE 518135 A BE518135 A BE 518135A BE 518135D A BE518135D A BE 518135DA BE 518135 A BE518135 A BE 518135A
- Authority
- BE
- Belgium
Links
Classifications
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03G—CONTROL OF AMPLIFICATION
- H03G3/00—Gain control in amplifiers or frequency changers
- H03G3/20—Automatic control
- H03G3/22—Automatic control in amplifiers having discharge tubes
- H03G3/225—Automatic control in amplifiers having discharge tubes controlling or controlled by the (local) oscillators of a (super)heterodyne receiver
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03D—DEMODULATION OR TRANSFERENCE OF MODULATION FROM ONE CARRIER TO ANOTHER
- H03D9/00—Demodulation or transference of modulation of modulated electromagnetic waves
- H03D9/06—Transference of modulation using distributed inductance and capacitance
- H03D9/065—Transference of modulation using distributed inductance and capacitance by means of discharge tubes having more than two electrodes
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- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03J—TUNING RESONANT CIRCUITS; SELECTING RESONANT CIRCUITS
- H03J5/00—Discontinuous tuning; Selecting predetermined frequencies; Selecting frequency bands with or without continuous tuning in one or more of the bands, e.g. push-button tuning, turret tuner
- H03J5/24—Discontinuous tuning; Selecting predetermined frequencies; Selecting frequency bands with or without continuous tuning in one or more of the bands, e.g. push-button tuning, turret tuner with a number of separate pretuned tuning circuits or separate tuning elements selectively brought into circuit, e.g. for waveband selection or for television channel selection
- H03J5/242—Discontinuous tuning; Selecting predetermined frequencies; Selecting frequency bands with or without continuous tuning in one or more of the bands, e.g. push-button tuning, turret tuner with a number of separate pretuned tuning circuits or separate tuning elements selectively brought into circuit, e.g. for waveband selection or for television channel selection used exclusively for band selection
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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
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Power Engineering (AREA)
- Superheterodyne Receivers (AREA)
- Magnetic Resonance Imaging Apparatus (AREA)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
NL724951X | 1952-03-03 |
Publications (1)
Publication Number | Publication Date |
---|---|
BE518135A true BE518135A (sv) |
Family
ID=19817769
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
BE518135D BE518135A (sv) | 1952-03-03 |
Country Status (6)
Country | Link |
---|---|
US (1) | US2736798A (sv) |
BE (1) | BE518135A (sv) |
DE (1) | DE970703C (sv) |
FR (1) | FR1072114A (sv) |
GB (2) | GB193882A (sv) |
NL (2) | NL167858B (sv) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB1052828A (sv) * | 1963-04-29 |
Family Cites Families (12)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US1830242A (en) * | 1929-03-22 | 1931-11-03 | Rca Corp | Wobbled frequency superheterodyne system |
DE673313C (de) * | 1931-08-01 | 1939-03-20 | Walter Tausig | Schaltung fuer UEberlagerungsempfang mit zwei oertlichen Schwingungserzeugern, derenFrequenzen sich um die gewuenschte UEberlagerungsfrequenz unterscheiden und beide oberhalb des Empfangsfrequenzbereiches liegen |
DE645324C (de) * | 1931-09-17 | 1937-05-26 | Kolster Brandes Ltd | Superheterodynempfaenger |
US2000084A (en) * | 1931-09-25 | 1935-05-07 | Hazeltine Corp | Short wave receiver arrangement |
US2024807A (en) * | 1932-11-30 | 1935-12-17 | Rca Corp | Radio apparatus |
GB414769A (en) * | 1933-02-13 | 1934-08-13 | Emi Ltd | Improvements in or relating to supersonic heterodyne receivers for wireless and like reception |
US2026759A (en) * | 1934-03-31 | 1936-01-07 | Rca Corp | Superheterodyne receiver |
GB455649A (en) * | 1935-04-26 | 1936-10-26 | Marconi Wireless Telegraph Co | Improvements in or relating to radio receivers |
DE728755C (de) * | 1937-03-07 | 1942-12-03 | Georg V Schaub | UEberlagerungsempfaenger mit zwei aufeinander folgenden Zwischenfrequenzen |
US2606285A (en) * | 1942-11-23 | 1952-08-05 | Fr Des Telecomm Soc | Double heterodyne radio receiver |
US2509963A (en) * | 1947-01-30 | 1950-05-30 | Collins Radio Co | Radio receiving and frequency conversion system |
DE815497C (de) * | 1948-12-21 | 1951-10-01 | Telefunken Gmbh | Skalenanordnung fuer einen UEberlagerungsempfaenger oder Sender |
-
0
- BE BE518135D patent/BE518135A/xx unknown
- NL NL89829D patent/NL89829C/xx active
- NL NL7505213.A patent/NL167858B/xx unknown
-
1921
- 1921-08-30 GB GB23013/21A patent/GB193882A/en not_active Expired
-
1953
- 1953-02-17 US US337369A patent/US2736798A/en not_active Expired - Lifetime
- 1953-02-27 GB GB5538/53A patent/GB724951A/en not_active Expired
- 1953-03-01 DE DEN6822A patent/DE970703C/de not_active Expired
- 1953-03-02 FR FR1072114D patent/FR1072114A/fr not_active Expired
Also Published As
Publication number | Publication date |
---|---|
GB724951A (en) | 1955-02-23 |
NL89829C (sv) | |
GB193882A (en) | 1923-02-28 |
NL167858B (nl) | |
FR1072114A (fr) | 1954-09-08 |
DE970703C (de) | 1958-10-16 |
US2736798A (en) | 1956-02-28 |