GB521330A - Improvements in or relating to superheterodyne wireless receiving sets - Google Patents

Improvements in or relating to superheterodyne wireless receiving sets

Info

Publication number
GB521330A
GB521330A GB13766/39A GB1376639A GB521330A GB 521330 A GB521330 A GB 521330A GB 13766/39 A GB13766/39 A GB 13766/39A GB 1376639 A GB1376639 A GB 1376639A GB 521330 A GB521330 A GB 521330A
Authority
GB
United Kingdom
Prior art keywords
band
condensers
coils
tuning
bands
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
GB13766/39A
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 GB521330A publication Critical patent/GB521330A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03J—TUNING RESONANT CIRCUITS; SELECTING RESONANT CIRCUITS
    • H03J3/00—Continuous tuning
    • H03J3/02—Details
    • H03J3/10—Circuit arrangements for fine tuning, e.g. bandspreading

Landscapes

  • Inductance-Capacitance Distribution Constants And Capacitance-Resistance Oscillators (AREA)
  • Arrangements For Transmission Of Measured Signals (AREA)
GB13766/39A 1938-05-11 1939-05-08 Improvements in or relating to superheterodyne wireless receiving sets Expired GB521330A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
NL212943X 1938-05-11

Publications (1)

Publication Number Publication Date
GB521330A true GB521330A (en) 1940-05-17

Family

ID=19778915

Family Applications (1)

Application Number Title Priority Date Filing Date
GB13766/39A Expired GB521330A (en) 1938-05-11 1939-05-08 Improvements in or relating to superheterodyne wireless receiving sets

Country Status (7)

Country Link
US (1) US2210379A (en, 2012)
BE (1) BE434287A (en, 2012)
CH (1) CH212943A (en, 2012)
DE (1) DE1081071B (en, 2012)
FR (1) FR854539A (en, 2012)
GB (1) GB521330A (en, 2012)
NL (1) NL53703C (en, 2012)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE950654C (de) * 1941-03-30 1956-10-11 Lorenz C Ag Rundfunkgeraet fuer Mittel- und Kurzwellenempfang, das mit einer Abstimmanzeigevorrichtung versehen ist
BE479623A (en, 2012) * 1942-01-07
US2424506A (en) * 1942-10-24 1947-07-22 Rca Corp Permeability-tuned short-wave spread-band receiver
US2522973A (en) * 1945-01-30 1950-09-19 Rca Corp Push-button ultra high frequency tuner
US2623995A (en) * 1949-10-28 1952-12-30 Gialluly Elie Marcel Scemam De Multirange tuning circuit
US2835813A (en) * 1954-04-26 1958-05-20 Philips Corp Device for fine tuning of a resonant circuit

Also Published As

Publication number Publication date
NL53703C (en, 2012)
DE1081071B (de) 1960-05-05
BE434287A (en, 2012)
FR854539A (fr) 1940-04-17
US2210379A (en) 1940-08-06
CH212943A (de) 1940-12-31

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