GB538389A - Improvements in or relating to wireless receivers with bandspread tuning - Google Patents

Improvements in or relating to wireless receivers with bandspread tuning

Info

Publication number
GB538389A
GB538389A GB3574/40A GB357440A GB538389A GB 538389 A GB538389 A GB 538389A GB 3574/40 A GB3574/40 A GB 3574/40A GB 357440 A GB357440 A GB 357440A GB 538389 A GB538389 A GB 538389A
Authority
GB
United Kingdom
Prior art keywords
tuning
pointer
band
condenser
lever
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
GB3574/40A
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.)
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 GB538389A publication Critical patent/GB538389A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03J—TUNING RESONANT CIRCUITS; SELECTING RESONANT CIRCUITS
    • H03J1/00—Details of adjusting, driving, indicating, or mechanical control arrangements for resonant circuits in general
    • H03J1/06—Driving or adjusting arrangements; combined with other driving or adjusting arrangements, e.g. of gain control
    • H03J1/10—Rope drive; Chain drive
    • 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

  • Magnetic Resonance Imaging Apparatus (AREA)
  • Channel Selection Circuits, Automatic Tuning Circuits (AREA)
GB3574/40A 1939-02-28 1940-02-26 Improvements in or relating to wireless receivers with bandspread tuning Expired GB538389A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
NL538389X 1939-02-28

Publications (1)

Publication Number Publication Date
GB538389A true GB538389A (en) 1941-07-31

Family

ID=19787234

Family Applications (1)

Application Number Title Priority Date Filing Date
GB3574/40A Expired GB538389A (en) 1939-02-28 1940-02-26 Improvements in or relating to wireless receivers with bandspread tuning

Country Status (5)

Country Link
US (1) US2238752A (enrdf_load_stackoverflow)
BE (1) BE438137A (enrdf_load_stackoverflow)
FR (1) FR863589A (enrdf_load_stackoverflow)
GB (1) GB538389A (enrdf_load_stackoverflow)
NL (1) NL55445C (enrdf_load_stackoverflow)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2471523A (en) * 1941-11-04 1949-05-31 Hartford Nat Bank & Trust Co Circuit element for tuning an electric circuit over a plurality of frequency bands
US2796519A (en) * 1956-01-30 1957-06-18 Rca Corp Tuning device

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE479623A (enrdf_load_stackoverflow) * 1942-01-07
NL62253C (enrdf_load_stackoverflow) * 1942-11-12
BE463073A (enrdf_load_stackoverflow) * 1944-03-16
US2494502A (en) * 1944-06-26 1950-01-10 Ferris Instr Lab Electrical capacitance device
US2922881A (en) * 1955-04-18 1960-01-26 Standard Coil Prod Co Inc Manual control having rotatable and tiltable stepped cam for television tuner

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2471523A (en) * 1941-11-04 1949-05-31 Hartford Nat Bank & Trust Co Circuit element for tuning an electric circuit over a plurality of frequency bands
US2796519A (en) * 1956-01-30 1957-06-18 Rca Corp Tuning device

Also Published As

Publication number Publication date
FR863589A (fr) 1941-04-04
US2238752A (en) 1941-04-15
NL55445C (enrdf_load_stackoverflow)
BE438137A (enrdf_load_stackoverflow)

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