GB542611A - Improvements in band-spread tuning circuits for radio receivers - Google Patents

Improvements in band-spread tuning circuits for radio receivers

Info

Publication number
GB542611A
GB542611A GB11451/40A GB1145140A GB542611A GB 542611 A GB542611 A GB 542611A GB 11451/40 A GB11451/40 A GB 11451/40A GB 1145140 A GB1145140 A GB 1145140A GB 542611 A GB542611 A GB 542611A
Authority
GB
United Kingdom
Prior art keywords
tuning
inductance
band
spread
variable
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
GB11451/40A
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.)
Mullard Radio Valve Co Ltd
Original Assignee
Mullard Radio Valve Co Ltd
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 Mullard Radio Valve Co Ltd filed Critical Mullard Radio Valve Co Ltd
Publication of GB542611A publication Critical patent/GB542611A/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
    • 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)
  • Input Circuits Of Receivers And Coupling Of Receivers And Audio Equipment (AREA)
GB11451/40A 1940-07-09 1940-07-09 Improvements in band-spread tuning circuits for radio receivers Expired GB542611A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB236890X 1940-07-09
GB180241X 1941-02-18

Publications (1)

Publication Number Publication Date
GB542611A true GB542611A (en) 1942-01-19

Family

ID=26253069

Family Applications (1)

Application Number Title Priority Date Filing Date
GB11451/40A Expired GB542611A (en) 1940-07-09 1940-07-09 Improvements in band-spread tuning circuits for radio receivers

Country Status (6)

Country Link
BE (1) BE476458A (enrdf_load_stackoverflow)
CH (1) CH236890A (enrdf_load_stackoverflow)
DE (1) DE941549C (enrdf_load_stackoverflow)
FR (1) FR957376A (enrdf_load_stackoverflow)
GB (1) GB542611A (enrdf_load_stackoverflow)
NL (1) NL67385C (enrdf_load_stackoverflow)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE963884C (de) * 1949-03-04 1957-05-16 Siemens Ag Schaltung zur Frequenznachstellung

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE666632C (de) * 1938-10-24 Lorenz Akt Ges C Schaltungsanordnung fuer Empfaenger von drahtlosen Signalen mit Einknopfbedienung
GB327710A (en) * 1929-01-09 1930-04-09 Gramophone Co Ltd Improvements in or relating to tuning devices for wireless receivers

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE963884C (de) * 1949-03-04 1957-05-16 Siemens Ag Schaltung zur Frequenznachstellung

Also Published As

Publication number Publication date
CH236890A (de) 1945-03-15
DE941549C (de) 1956-04-12
BE476458A (enrdf_load_stackoverflow)
NL67385C (enrdf_load_stackoverflow)
FR957376A (enrdf_load_stackoverflow) 1950-02-18

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