FR877453A - Tuning device for radio receivers of the superheterodyne type - Google Patents
Tuning device for radio receivers of the superheterodyne typeInfo
- Publication number
- FR877453A FR877453A FR877453DA FR877453A FR 877453 A FR877453 A FR 877453A FR 877453D A FR877453D A FR 877453DA FR 877453 A FR877453 A FR 877453A
- Authority
- FR
- France
- Prior art keywords
- tuning device
- radio receivers
- superheterodyne type
- superheterodyne
- type
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
Classifications
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03J—TUNING RESONANT CIRCUITS; SELECTING RESONANT CIRCUITS
- H03J3/00—Continuous tuning
- H03J3/28—Continuous tuning of more than one resonant circuit simultaneously, the tuning frequencies of the circuits having a substantially constant difference throughout the tuning range
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
NL605353X | 1940-12-05 |
Publications (1)
Publication Number | Publication Date |
---|---|
FR877453A true FR877453A (en) | 1942-12-08 |
Family
ID=19787913
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FR877453D Expired FR877453A (en) | 1940-12-05 | 1941-12-04 | Tuning device for radio receivers of the superheterodyne type |
Country Status (5)
Country | Link |
---|---|
US (1) | US2486152A (en) |
DE (1) | DE971188C (en) |
FR (1) | FR877453A (en) |
GB (1) | GB605353A (en) |
NL (1) | NL59335C (en) |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2921186A (en) * | 1954-06-10 | 1960-01-12 | Polarad Electronics Corp | Means for generating a voltage linearly proportional to frequency |
US2882392A (en) * | 1955-03-09 | 1959-04-14 | Rca Corp | Receiver tuned by inductors with tracking by initial positionment of coils on cores |
US3310526A (en) * | 1961-12-18 | 1967-03-21 | Gen Electric | Cyclopolysiloxanes |
Family Cites Families (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2190082A (en) * | 1933-04-22 | 1940-02-13 | Johnson Lab Inc | Permeability-tuned superheterodyne receiver |
US2037754A (en) * | 1933-12-29 | 1936-04-21 | Rca Corp | Superheterodyne receiver |
US2276699A (en) * | 1939-03-11 | 1942-03-17 | Telefunken Geselischaft Fur Dr | Superheterodyne receiver |
US2263613A (en) * | 1939-03-31 | 1941-11-25 | Rca Corp | Unicontrol variable inductance tuning system |
US2190048A (en) * | 1939-04-10 | 1940-02-13 | Johnson Lab Inc | Permeability-tuned oscillator tracking arrangement |
NL58891C (en) * | 1940-01-02 | |||
NL61935C (en) * | 1940-05-17 |
-
0
- NL NL59335D patent/NL59335C/xx active
-
1941
- 1941-12-03 DE DEN2326D patent/DE971188C/en not_active Expired
- 1941-12-04 FR FR877453D patent/FR877453A/en not_active Expired
-
1945
- 1945-12-20 GB GB34501/45A patent/GB605353A/en not_active Expired
-
1946
- 1946-05-09 US US668534A patent/US2486152A/en not_active Expired - Lifetime
Also Published As
Publication number | Publication date |
---|---|
GB605353A (en) | 1948-07-21 |
NL59335C (en) | |
DE971188C (en) | 1958-12-24 |
US2486152A (en) | 1949-10-25 |
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