GB906816A - Improvements in or relating to television channel switches - Google Patents

Improvements in or relating to television channel switches

Info

Publication number
GB906816A
GB906816A GB2621461A GB2621461A GB906816A GB 906816 A GB906816 A GB 906816A GB 2621461 A GB2621461 A GB 2621461A GB 2621461 A GB2621461 A GB 2621461A GB 906816 A GB906816 A GB 906816A
Authority
GB
United Kingdom
Prior art keywords
switch
preh
cam
channel
tuning
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
GB2621461A
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.)
AGNES PREH
Original Assignee
AGNES PREH
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 AGNES PREH filed Critical AGNES PREH
Publication of GB906816A publication Critical patent/GB906816A/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
    • H03J5/02—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 variable tuning element having a number of predetermined settings and adjustable to a desired one of these settings
    • H03J5/04—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 variable tuning element having a number of predetermined settings and adjustable to a desired one of these settings operated by hand
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03J—TUNING RESONANT CIRCUITS; SELECTING RESONANT CIRCUITS
    • H03J1/00—Details of adjusting, driving, indicating, or mechanical control arrangements for resonant circuits in general
    • H03J1/06—Driving or adjusting arrangements; combined with other driving or adjusting arrangements, e.g. of gain control
    • H03J1/14—Special arrangements for fine and coarse tuning
    • 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
    • H03J5/02—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 variable tuning element having a number of predetermined settings and adjustable to a desired one of these settings
    • H03J5/04—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 variable tuning element having a number of predetermined settings and adjustable to a desired one of these settings operated by hand
    • H03J5/10—Settings determined by a number of positioning means mounted on a common support, e.g. turret tuner, which is adjustable to desired positions, a different positioning means being in operation in each position

Landscapes

  • Channel Selection Circuits, Automatic Tuning Circuits (AREA)
  • Microwave Tubes (AREA)

Abstract

906,816. Radio receiver switch tuning arrangements. PREH, W., and PREH, A., [trading as PREH ELEKTROFEINMECHANISCHE WERKE, J. PREH NACHFOLGER. July 19, 1961 [July 20, 1960], No. 26214/61. Class 40 (5). In a television channel switch wherein fine tuning on any one channel is effected by an adjustable condenser 4, a plurality of preset cam discs 8, corresponding to the number of switch positions is carried by the movable part of the switch so that in any set position of the switch, the associated cam co-operates with the tuning segment 5 of the condenser to effect the fine tuning appropriate to the selected channel. Each cam 8 may be adjusted through gearing 10, 16 by a rotatable spindle 21, Fig. 2, which when depressed in the direction of the arrow shown is moved laterally by the conical bearing surfaces 24, 25 to bring the gearing 10, 16 into driving engagement with the teeth 811 of the cam disc 8 corresponding to the selected channel whereby the disc may be adjusted. The cam discs of all the channels may be preset in this manner so that accurate fine tuning may be effected automatically when the channel switch is operated.
GB2621461A 1960-07-20 1961-07-19 Improvements in or relating to television channel switches Expired GB906816A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEP25388A DE1173550B (en) 1960-07-20 1960-07-20 Device for fine tuning of a tuning capacitor in television drum channel switches

Publications (1)

Publication Number Publication Date
GB906816A true GB906816A (en) 1962-09-26

Family

ID=7370067

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2621461A Expired GB906816A (en) 1960-07-20 1961-07-19 Improvements in or relating to television channel switches

Country Status (3)

Country Link
DE (1) DE1173550B (en)
GB (1) GB906816A (en)
NL (1) NL267144A (en)

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL169559B (en) * 1951-05-16 Dearman Timothy Charles CLAMPING DEVICE.
US2718623A (en) * 1951-08-30 1955-09-20 Motorola Inc Tuner
US2768300A (en) * 1952-04-09 1956-10-23 Standard Coil Prod Co Inc Fine tuner for turret type tuners
DE1709876U (en) * 1953-03-23 1955-11-03 Telefunken Gmbh CHANNEL SWITCH FOR TELEVISION TUNING.
US2901615A (en) * 1958-04-25 1959-08-25 Gen Electric Automatic tuning system

Also Published As

Publication number Publication date
DE1173550B (en) 1964-07-09
NL267144A (en)

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