GB417410A - Filters for super-heterodyne circuits for wireless reception - Google Patents

Filters for super-heterodyne circuits for wireless reception

Info

Publication number
GB417410A
GB417410A GB2175633A GB2175633A GB417410A GB 417410 A GB417410 A GB 417410A GB 2175633 A GB2175633 A GB 2175633A GB 2175633 A GB2175633 A GB 2175633A GB 417410 A GB417410 A GB 417410A
Authority
GB
United Kingdom
Prior art keywords
super
coupling
filters
capacities
wireless reception
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
GB2175633A
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.)
BRITISH ACOUSTIC FILMS Ltd
WILLIAM HORACE HARRISON
Original Assignee
BRITISH ACOUSTIC FILMS Ltd
WILLIAM HORACE HARRISON
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 BRITISH ACOUSTIC FILMS Ltd, WILLIAM HORACE HARRISON filed Critical BRITISH ACOUSTIC FILMS Ltd
Priority to GB2175633A priority Critical patent/GB417410A/en
Publication of GB417410A publication Critical patent/GB417410A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03D—DEMODULATION OR TRANSFERENCE OF MODULATION FROM ONE CARRIER TO ANOTHER
    • H03D7/00—Transference of modulation from one carrier to another, e.g. frequency-changing
    • H03D7/18—Modifications of frequency-changers for eliminating image frequencies

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Measuring And Recording Apparatus For Diagnosis (AREA)
  • Electrotherapy Devices (AREA)

Abstract

417,410. Impedance networks. BRITISH ACOUSTIC FILMS, Ltd., 142, Wardour Street, London, and HARRISON, W. H., Devonia, Lake Avenue, Slough, Bucking- hamshire. Aug. 3, 1933, No. 21756. [Class 40 (iii).] A condenser coupling 6 between the input and the grid of the first valve in a super. heterodyne receiver additional to the normal coupling and provided to suppress second channel interference is connected to a low potential point in the aerial circuit obtained by connecting a larger condenser 8 in the earth lead. The ratio between the capacities is preferably large and the capacities may have values of 1000 cm. and 5 cm. The coupling capacity is preferably adjustable.
GB2175633A 1933-08-03 1933-08-03 Filters for super-heterodyne circuits for wireless reception Expired GB417410A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB2175633A GB417410A (en) 1933-08-03 1933-08-03 Filters for super-heterodyne circuits for wireless reception

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB2175633A GB417410A (en) 1933-08-03 1933-08-03 Filters for super-heterodyne circuits for wireless reception

Publications (1)

Publication Number Publication Date
GB417410A true GB417410A (en) 1934-10-04

Family

ID=10168257

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2175633A Expired GB417410A (en) 1933-08-03 1933-08-03 Filters for super-heterodyne circuits for wireless reception

Country Status (1)

Country Link
GB (1) GB417410A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2578131A1 (en) * 1985-02-28 1986-08-29 Rca Corp FREQUENCY TRAP IMAGE FOLLOWING AGREED CHANGES

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2578131A1 (en) * 1985-02-28 1986-08-29 Rca Corp FREQUENCY TRAP IMAGE FOLLOWING AGREED CHANGES
GB2171872A (en) * 1985-02-28 1986-09-03 Rca Corp Frequency selective network

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