GB1100868A - Multi-range tuner - Google Patents

Multi-range tuner

Info

Publication number
GB1100868A
GB1100868A GB3420866A GB3420866A GB1100868A GB 1100868 A GB1100868 A GB 1100868A GB 3420866 A GB3420866 A GB 3420866A GB 3420866 A GB3420866 A GB 3420866A GB 1100868 A GB1100868 A GB 1100868A
Authority
GB
United Kingdom
Prior art keywords
coil
circuits
oscillator
impedance
tuned
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
GB3420866A
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.)
International Standard Electric Corp
Original Assignee
International Standard Electric Corp
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 International Standard Electric Corp filed Critical International Standard Electric Corp
Publication of GB1100868A publication Critical patent/GB1100868A/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
    • 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
    • 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
    • H03D7/12—Transference of modulation from one carrier to another, e.g. frequency-changing by means of semiconductor devices having more than two electrodes
    • 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
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03B—GENERATION OF OSCILLATIONS, DIRECTLY OR BY FREQUENCY-CHANGING, BY CIRCUITS EMPLOYING ACTIVE ELEMENTS WHICH OPERATE IN A NON-SWITCHING MANNER; GENERATION OF NOISE BY SUCH CIRCUITS
    • H03B2200/00—Indexing scheme relating to details of oscillators covered by H03B
    • H03B2200/003—Circuit elements of oscillators
    • H03B2200/0048—Circuit elements of oscillators including measures to switch the frequency band, e.g. by harmonic selection

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Inductance-Capacitance Distribution Constants And Capacitance-Resistance Oscillators (AREA)
  • Superheterodyne Receivers (AREA)
  • Channel Selection Circuits, Automatic Tuning Circuits (AREA)

Abstract

1,100,868. Transistor mixer circuits; waveband switching. INTERNATIONAL STANDARD ELECTRIC CORPORATION. 29 July, 1966 [30 July, 1965], No. 34208/66. Headings H3Q and H3T. A self-oscillating mixer stage for U.H.F. and V.H.F. reception comprises a common-base transistor whose collector is coupled to the I.F. circuits by a coil having a low impedance at I.F. and shunted by a resistor, the oscillator inductors on the V.H.F. band also being connected to the collector and presenting an impedance to I.F. at least comparable with the impedance of said coil. In the figure, the transistor 5 is a common-base self-oscillating mixer, the output being taken from the collector via inductor 11 shunted by resistor 12; coil 13 is tuned to the I.F. by capacitor 9 which also couples the oscillator tuned circuits to the transistor. The I.F. circuit is completed by coil 14. In the U.H.F. position of the wavechange switch (as shown) the oscillator circuit comprises the line 7 tuned by capacitors 8, 31, 32, and the R.F. input is coupled to line 6. In the V.H.F. Band III position the oscillator circuit is 19, 22 and the line 7 with capacitors 8 and 21 are shunted across this to form part of the tuning capacitance. The R.F. input is from circuit 18. In the V.H.F. Band I position the oscillator coil is 26 tuned by capacitors 8, 28, and the R.F. input is via circuit 25. The oscillation-maintaining capacitor 10 has a higher impedance at I.F. than has any of the R.F. circuits so that no special measures are necessary to exclude the I.F. from the R.F. circuits. An extra capacitor 30 is brought in to increase the positive feedback on Band I. The output impedance at I.F. is the same on all the ranges. Coil 19 may be tapped in the same way as coil 26.
GB3420866A 1965-07-30 1966-07-29 Multi-range tuner Expired GB1100868A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE1965G0044308 DE1278558B (en) 1965-07-30 1965-07-30 Transistor multi-range television tuner

Publications (1)

Publication Number Publication Date
GB1100868A true GB1100868A (en) 1968-01-24

Family

ID=7127416

Family Applications (1)

Application Number Title Priority Date Filing Date
GB3420866A Expired GB1100868A (en) 1965-07-30 1966-07-29 Multi-range tuner

Country Status (9)

Country Link
AT (1) AT276508B (en)
BE (1) BE684766A (en)
CH (1) CH440371A (en)
DE (1) DE1278558B (en)
ES (1) ES329714A1 (en)
FR (1) FR1500932A (en)
GB (1) GB1100868A (en)
NL (1) NL6610540A (en)
SE (1) SE344526B (en)

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB967018A (en) * 1962-08-11 1964-08-19 Pye Ltd Tuner unit

Also Published As

Publication number Publication date
ES329714A1 (en) 1967-06-01
NL6610540A (en) 1967-01-31
FR1500932A (en) 1967-11-10
BE684766A (en) 1967-01-30
SE344526B (en) 1972-04-17
CH440371A (en) 1967-07-31
DE1278558B (en) 1968-09-26
AT276508B (en) 1969-11-25

Similar Documents

Publication Publication Date Title
GB1099035A (en) Tuner for radio receivers
ES353243A1 (en) Single control multiband variable capacitance diode tv tuner
GB1273603A (en) A television tuning device
US3391347A (en) Resonant circuits with switchable capacitive tuning diodes
US2894126A (en) Radio frequency amplifier and converter
GB1100868A (en) Multi-range tuner
ES349700A1 (en) Wave-band switch for television receivers
GB1075338A (en) Improvements relating to waveband switching arrangements
GB683939A (en) Improvements in or relating to superheterodyne radio-receivers
ES8607644A1 (en) Tuning arrangement.
US3010014A (en) Frequency converter circuits
GB1094010A (en) Improved inductive reactance circuit
GB1181386A (en) Improvements in or relating to UHF-VHF selector circuits
US3417341A (en) Composite am-fm intermediate frequency amplifier
US2997582A (en) Television receiver with ultra high frequency cavity tuner inside very high frequency turret tuner
GB1172642A (en) Oscillators.
GB1001871A (en) Improvements relating to self-oscillating mixer circuits
GB648259A (en) Improvements relating to frequency converter circuits for multi-band superheterodynereceivers
GB1325840A (en) Transistor vhf converter
ES358541A1 (en) Solid state tuner
GB1225423A (en)
SU482918A1 (en) Transistor TV channel selector
GB1008540A (en) Improvements in or relating to mixing circuit arrangements for high-frequency signals
GB1062484A (en) Improvements in or relating to variable tuning capacitances
GB1172100A (en) Improvements in or relating to Resonant Circuits