FR877453A - Tuning device for radio receivers of the superheterodyne type - Google Patents

Tuning device for radio receivers of the superheterodyne type

Info

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
Application number
Other languages
French (fr)
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Koninklijke Philips NV
Original Assignee
Philips Gloeilampenfabrieken NV
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Philips Gloeilampenfabrieken NV filed Critical Philips Gloeilampenfabrieken NV
Application granted granted Critical
Publication of FR877453A publication Critical patent/FR877453A/en
Expired legal-status Critical Current

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
FR877453D 1940-12-05 1941-12-04 Tuning device for radio receivers of the superheterodyne type Expired FR877453A (en)

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)

* Cited by examiner, † Cited by third party
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)

* Cited by examiner, † Cited by third party
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

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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