GB1114204A - Improvements in or relating to tuning arrangements - Google Patents

Improvements in or relating to tuning arrangements

Info

Publication number
GB1114204A
GB1114204A GB3554765A GB3554765A GB1114204A GB 1114204 A GB1114204 A GB 1114204A GB 3554765 A GB3554765 A GB 3554765A GB 3554765 A GB3554765 A GB 3554765A GB 1114204 A GB1114204 A GB 1114204A
Authority
GB
United Kingdom
Prior art keywords
transistor
mixer
band
tuning
receiver
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
GB3554765A
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.)
Telefunken Patentverwertungs GmbH
Original Assignee
Telefunken Patentverwertungs 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 Telefunken Patentverwertungs GmbH filed Critical Telefunken Patentverwertungs GmbH
Publication of GB1114204A publication Critical patent/GB1114204A/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
    • H03D7/12—Transference of modulation from one carrier to another, e.g. frequency-changing by means of semiconductor devices having more than two electrodes

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Superheterodyne Receivers (AREA)

Abstract

1,114,204. Radio receiving circuits. TELE. FUNKEN PATENTVERWERTUNGS G.m.b.H. 19 Aug., 1965 [26 Sept., 1964], No. 35547/65. Heading H3Q. In a tuning arrangement, for multi-band radio or television receivers, two transistors 3, 4 are connected so that when the receiver is switched for reception on one band transistor 3 serves as a grounded base self-oscillating mixer and transistor 4 serves as a grounded emitter I.F. amplifier and when the receiver is switched for reception on another band transistor 3 serves as a grounded base oscillator and transistor 4 as a grounded emitter mixer. The mixer transistors 3 or 4 may be preceded by an amplifier transistor 1. Switch 5 modifies the tuning of the receiver so that either U.H.F. or V.H.F. Band III signals from 7, 14 may be received when transistor 3 is the mixer and transistor 4 is the I.F. amplifier. Then by operating switch 6, so as to connect transistor 3 as an oscillator, transistor 4 as the mixer and to change the tuning circuits (not shown), V.H.F. Band I signals may be received from 14.
GB3554765A 1964-09-26 1965-08-19 Improvements in or relating to tuning arrangements Expired GB1114204A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE1964T0027091 DE1237185B (en) 1964-09-26 1964-09-26 Voting arrangement

Publications (1)

Publication Number Publication Date
GB1114204A true GB1114204A (en) 1968-05-22

Family

ID=7553254

Family Applications (1)

Application Number Title Priority Date Filing Date
GB3554765A Expired GB1114204A (en) 1964-09-26 1965-08-19 Improvements in or relating to tuning arrangements

Country Status (3)

Country Link
AT (1) AT254290B (en)
DE (1) DE1237185B (en)
GB (1) GB1114204A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0277693A2 (en) * 1987-02-05 1988-08-10 Philips Patentverwaltung GmbH Circuit arrangement for a mixer in a HF tuner

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0277693A2 (en) * 1987-02-05 1988-08-10 Philips Patentverwaltung GmbH Circuit arrangement for a mixer in a HF tuner
EP0277693A3 (en) * 1987-02-05 1989-12-06 Philips Patentverwaltung Gmbh Circuit arrangement for a mixer in a hf tuner

Also Published As

Publication number Publication date
AT254290B (en) 1967-05-10
DE1237185B (en) 1967-03-23

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