FR51420E - Band-dispersion radio receiver - Google Patents

Band-dispersion radio receiver

Info

Publication number
FR51420E
FR51420E FR51420DA FR51420E FR 51420 E FR51420 E FR 51420E FR 51420D A FR51420D A FR 51420DA FR 51420 E FR51420 E FR 51420E
Authority
FR
France
Prior art keywords
band
radio receiver
dispersion
dispersion radio
receiver
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 FR51420E publication Critical patent/FR51420E/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F21/00—Variable inductances or transformers of the signal type
    • H01F21/02—Variable inductances or transformers of the signal type continuously variable, e.g. variometers
    • H01F21/06—Variable inductances or transformers of the signal type continuously variable, e.g. variometers by movement of core or part of core relative to the windings as a whole
    • H01F21/065—Measures for obtaining a desired relation between the position of the core and the inductance
    • 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

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Channel Selection Circuits, Automatic Tuning Circuits (AREA)
  • Magnetic Resonance Imaging Apparatus (AREA)
FR51420D 1938-10-13 1941-02-15 Band-dispersion radio receiver Expired FR51420E (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE536412X 1938-10-13
DE2285029X 1939-06-22
DE2252100X 1939-06-28

Publications (1)

Publication Number Publication Date
FR51420E true FR51420E (en) 1942-06-24

Family

ID=32096473

Family Applications (3)

Application Number Title Priority Date Filing Date
FR860823D Expired FR860823A (en) 1938-10-13 1939-10-12 Band-dispersion radio receiver
FR51420D Expired FR51420E (en) 1938-10-13 1941-02-15 Band-dispersion radio receiver
FR51427D Expired FR51427E (en) 1938-10-13 1941-02-18 Band-dispersion radio receiver

Family Applications Before (1)

Application Number Title Priority Date Filing Date
FR860823D Expired FR860823A (en) 1938-10-13 1939-10-12 Band-dispersion radio receiver

Family Applications After (1)

Application Number Title Priority Date Filing Date
FR51427D Expired FR51427E (en) 1938-10-13 1941-02-18 Band-dispersion radio receiver

Country Status (6)

Country Link
US (2) US2252100A (en)
BE (1) BE440362A (en)
DE (1) DE1081072B (en)
FR (3) FR860823A (en)
GB (1) GB536412A (en)
NL (1) NL64971C (en)

Families Citing this family (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE551064A (en) * 1940-08-28
DE761144C (en) * 1941-01-27 1952-11-10 Telefunken Gmbh Receiver with spread spectrum in the shortwave range
DE976578C (en) * 1941-04-11 1963-12-05 Siemens Ag Variometer arrangement with different variation ranges
BE446251A (en) * 1941-07-01
DE952184C (en) * 1942-03-14 1956-11-15 Lorenz C Ag Receiver with permeability adjustment by moving iron cores for band spreading
US2424506A (en) * 1942-10-24 1947-07-22 Rca Corp Permeability-tuned short-wave spread-band receiver
DE963884C (en) * 1949-03-04 1957-05-16 Siemens Ag Circuit for frequency adjustment
DE933346C (en) * 1950-10-21 1955-09-22 Siemens Ag Variometer with movable iron core, especially for shortwave band spreading in radio equipment
DE864894C (en) * 1951-03-15 1953-01-29 Saba Gmbh Device for fine tuning of high-frequency oscillation circuits, preferably for radio equipment
DE902265C (en) * 1951-11-20 1954-01-21 Oskar Vierling Dr Voting arrangement and construction of small receivers
DE4012265A1 (en) * 1990-04-17 1991-10-24 Toepholm & Westermann CIRCUIT ARRANGEMENT FOR AN OUTPUT TANK CIRCUIT OF A TRANSMITTER END STAGE OPERATED WITH FREQUENCY REVERSING
US5302415A (en) * 1992-12-08 1994-04-12 E. I. Du Pont De Nemours And Company Electroless plated aramid surfaces and a process for making such surfaces

Also Published As

Publication number Publication date
US2285029A (en) 1942-06-02
FR860823A (en) 1941-01-24
GB536412A (en) 1941-05-14
BE440362A (en)
US2252100A (en) 1941-08-12
NL64971C (en)
FR51427E (en) 1942-06-24
DE1081072B (en) 1960-05-05

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