GB450858A - Television receiver - Google Patents

Television receiver

Info

Publication number
GB450858A
GB450858A GB2347/35A GB234735A GB450858A GB 450858 A GB450858 A GB 450858A GB 2347/35 A GB2347/35 A GB 2347/35A GB 234735 A GB234735 A GB 234735A GB 450858 A GB450858 A GB 450858A
Authority
GB
United Kingdom
Prior art keywords
aerial
grid
jan
wave
quarter
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
GB2347/35A
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.)
Loewe Opta GmbH
Original Assignee
Loewe Opta GmbH
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 Loewe Opta GmbH filed Critical Loewe Opta GmbH
Publication of GB450858A publication Critical patent/GB450858A/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
    • H03D7/06—Transference of modulation from one carrier to another, e.g. frequency-changing by means of discharge tubes having more than two electrodes
    • H03D7/08—Transference of modulation from one carrier to another, e.g. frequency-changing by means of discharge tubes having more than two electrodes the signals to be mixed being applied between the same two electrodes

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Circuits Of Receivers In General (AREA)
  • Superheterodyne Receivers (AREA)

Abstract

450,858. Valve circuits for wireless reception. RADIOAKT.-GES. D. S. LOEWE, 10, Wiesenweg, Steglitz, Berlin. Jan. 24, 1935, No. 2347. Convention date, Jan. 25, 1934. Addition to 429,419. [Class 40 (v)] In a heterodyne receiver in which the aerial is connected as in the parent Specification to the moving plate of a differential condenser, the fixed plates of which are connected to the oscillating circuit so arranged that the aerial is decoupled from the oscillatory circuit, a resonance aerial is used having a length of a quarter or multiple thereof of the received wavelength. The Figure shows a frequency changer 10 and oscillator circuit 11, 12 associated with an aerial terminal 9 through differential condenser 14, 15. A quarter wave aerial 2 or a dipole 3 may be used in which case the transformer secondary 8 may be resonant to the received frequency while the primary is chosen to match the line impedance. The valve 10 is preferably of the screen-grid or interception grid type and long wave interference may be avoided by filtering devices 16, 17, 18 and 21. The amplitude of the local oscillation is maintained constant by grid resistance 20. The invention is shown applied to a short-wave superheterodyne television receiver incorporating automatic gain regulation.
GB2347/35A 1934-01-25 1935-01-24 Television receiver Expired GB450858A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE450858X 1934-01-25

Publications (1)

Publication Number Publication Date
GB450858A true GB450858A (en) 1936-07-24

Family

ID=6538450

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2347/35A Expired GB450858A (en) 1934-01-25 1935-01-24 Television receiver

Country Status (2)

Country Link
BE (1) BE407479A (en)
GB (1) GB450858A (en)

Also Published As

Publication number Publication date
BE407479A (en)

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