GB953802A - Tuning arrangements for television receivers - Google Patents

Tuning arrangements for television receivers

Info

Publication number
GB953802A
GB953802A GB3399759A GB3399759A GB953802A GB 953802 A GB953802 A GB 953802A GB 3399759 A GB3399759 A GB 3399759A GB 3399759 A GB3399759 A GB 3399759A GB 953802 A GB953802 A GB 953802A
Authority
GB
United Kingdom
Prior art keywords
switch
tuners
energized
receiver
tuner
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
GB3399759A
Inventor
Henry Arthur Mcghee
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.)
Pye Electronic Products Ltd
Original Assignee
Pye 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 Pye Ltd filed Critical Pye Ltd
Priority to GB3399759A priority Critical patent/GB953802A/en
Publication of GB953802A publication Critical patent/GB953802A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03J—TUNING RESONANT CIRCUITS; SELECTING RESONANT CIRCUITS
    • H03J5/00—Discontinuous tuning; Selecting predetermined frequencies; Selecting frequency bands with or without continuous tuning in one or more of the bands, e.g. push-button tuning, turret tuner
    • H03J5/24—Discontinuous tuning; Selecting predetermined frequencies; Selecting frequency bands with or without continuous tuning in one or more of the bands, e.g. push-button tuning, turret tuner with a number of separate pretuned tuning circuits or separate tuning elements selectively brought into circuit, e.g. for waveband selection or for television channel selection
    • H03J5/242—Discontinuous tuning; Selecting predetermined frequencies; Selecting frequency bands with or without continuous tuning in one or more of the bands, e.g. push-button tuning, turret tuner with a number of separate pretuned tuning circuits or separate tuning elements selectively brought into circuit, e.g. for waveband selection or for television channel selection used exclusively for band selection

Landscapes

  • Superheterodyne Receivers (AREA)

Abstract

953,802. Radio receiver tuning arrangements. PYE Ltd. Oct. 7, 1960 [Oct. 7, 1959], No. 33997/59. Heading H3Q. In a television receiver tuner arrangement, wherein each of a plurality of separate tuners includes an amplifier and tuned circuit, switch means are provided for rendering any one of the tuners operative at any one time. Two separate tuners 1, 2 tuned for frequencies in Bands I, III, respectively, and each comprising a cascode amplifier stage and a mixer stage including a local oscillator, have their mixer anode circuits connected together and to the primary of a common I.F. transformer 5, the secondary of which feeds the I.F. amplifier stages of the receiver. A changeover switch 6 supplies H.T. to the cascode amplifiers and oscillators of the tuners so that only one tuner is energized at any time to feed the remainder of the receiver. Resistors 7, connected across the switch contacts, allow a small current to be passed to that tuner which is not energized through switch 6 so that the valves are energized at all times. The changeover switch may be a relay which is operated by means of a low voltage and controlled by a single-pole switch at a remote position.
GB3399759A 1959-10-07 1959-10-07 Tuning arrangements for television receivers Expired GB953802A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB3399759A GB953802A (en) 1959-10-07 1959-10-07 Tuning arrangements for television receivers

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB3399759A GB953802A (en) 1959-10-07 1959-10-07 Tuning arrangements for television receivers

Publications (1)

Publication Number Publication Date
GB953802A true GB953802A (en) 1964-04-02

Family

ID=10360069

Family Applications (1)

Application Number Title Priority Date Filing Date
GB3399759A Expired GB953802A (en) 1959-10-07 1959-10-07 Tuning arrangements for television receivers

Country Status (1)

Country Link
GB (1) GB953802A (en)

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