GB605353A - Improvements in or relating to tuning devices for superheterodyne receivers - Google Patents

Improvements in or relating to tuning devices for superheterodyne receivers

Info

Publication number
GB605353A
GB605353A GB34501/45A GB3450145A GB605353A GB 605353 A GB605353 A GB 605353A GB 34501/45 A GB34501/45 A GB 34501/45A GB 3450145 A GB3450145 A GB 3450145A GB 605353 A GB605353 A GB 605353A
Authority
GB
United Kingdom
Prior art keywords
core
oscillator
cores
coil
coils
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
GB34501/45A
Other languages
English (en)
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.)
Philips Lamps Ltd
Koninklijke Philips NV
Original Assignee
Philips Lamps Ltd
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 Lamps Ltd, Philips Gloeilampenfabrieken NV filed Critical Philips Lamps Ltd
Publication of GB605353A publication Critical patent/GB605353A/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

Landscapes

  • Inductance-Capacitance Distribution Constants And Capacitance-Resistance Oscillators (AREA)
  • Stabilization Of Oscillater, Synchronisation, Frequency Synthesizers (AREA)
GB34501/45A 1940-12-05 1945-12-20 Improvements in or relating to tuning devices for superheterodyne receivers Expired GB605353A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
NL605353X 1940-12-05

Publications (1)

Publication Number Publication Date
GB605353A true GB605353A (en) 1948-07-21

Family

ID=19787913

Family Applications (1)

Application Number Title Priority Date Filing Date
GB34501/45A Expired GB605353A (en) 1940-12-05 1945-12-20 Improvements in or relating to tuning devices for superheterodyne receivers

Country Status (5)

Country Link
US (1) US2486152A (enrdf_load_stackoverflow)
DE (1) DE971188C (enrdf_load_stackoverflow)
FR (1) FR877453A (enrdf_load_stackoverflow)
GB (1) GB605353A (enrdf_load_stackoverflow)
NL (1) NL59335C (enrdf_load_stackoverflow)

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 (enrdf_load_stackoverflow) * 1940-01-02
NL61935C (enrdf_load_stackoverflow) * 1940-05-17

Also Published As

Publication number Publication date
FR877453A (fr) 1942-12-08
DE971188C (de) 1958-12-24
US2486152A (en) 1949-10-25
NL59335C (enrdf_load_stackoverflow)

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