GB828405A - Improvements in or relating to linearity control devices for television receivers - Google Patents

Improvements in or relating to linearity control devices for television receivers

Info

Publication number
GB828405A
GB828405A GB16470/58A GB1647058A GB828405A GB 828405 A GB828405 A GB 828405A GB 16470/58 A GB16470/58 A GB 16470/58A GB 1647058 A GB1647058 A GB 1647058A GB 828405 A GB828405 A GB 828405A
Authority
GB
United Kingdom
Prior art keywords
core
coil
extension
relating
linearity control
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
GB16470/58A
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.)
Philips Electrical Industries Ltd
Original Assignee
Philips Electrical Industries 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 Philips Electrical Industries Ltd filed Critical Philips Electrical Industries Ltd
Publication of GB828405A publication Critical patent/GB828405A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N3/00—Scanning details of television systems; Combination thereof with generation of supply voltages
    • H04N3/10—Scanning details of television systems; Combination thereof with generation of supply voltages by means not exclusively optical-mechanical
    • H04N3/16—Scanning details of television systems; Combination thereof with generation of supply voltages by means not exclusively optical-mechanical by deflecting electron beam in cathode-ray tube, e.g. scanning corrections
    • H04N3/22—Circuits for controlling dimensions, shape or centering of picture on screen
    • H04N3/23—Distortion correction, e.g. for pincushion distortion correction, S-correction
    • H04N3/237—Distortion correction, e.g. for pincushion distortion correction, S-correction using passive elements, e.g. diodes
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F21/00—Variable inductances or transformers of the signal type
    • H01F21/02—Variable inductances or transformers of the signal type continuously variable, e.g. variometers
    • H01F21/08—Variable inductances or transformers of the signal type continuously variable, e.g. variometers by varying the permeability of the core, e.g. by varying magnetic bias
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03K—PULSE TECHNIQUE
    • H03K4/00—Generating pulses having essentially a finite slope or stepped portions
    • H03K4/06—Generating pulses having essentially a finite slope or stepped portions having triangular shape
    • H03K4/08—Generating pulses having essentially a finite slope or stepped portions having triangular shape having sawtooth shape
    • H03K4/90—Linearisation of ramp; Synchronisation of pulses

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Details Of Television Scanning (AREA)

Abstract

828,405. Inductors. PHILIPS ELECTRICAL INDUSTRIES Ltd. May 22, 1958 [May 25, 1957], No. 16470/58. Class 38 (2). A linearity control device for correcting the deflection current in a television receiver comprises a coil 1 and a core 11 relatively movable thereto and premagnetized by at least one permanent magnet 5, there being provided two annular magnets 5 and 7 which are radially magnetized in opposite senses and are arranged one on each side of the coil 1 and coaxially therewith are capable of embracing the core 11 with slight clearance. Control is effected by moving the core into or out of the second magnet 7, between the limiting positions 17 and 19, by means of the extension 13. The assembly may be embedded in a sleeve of polyester resin reinforced by glass fibres and the core may be locked in position by a split nylon bolt 15 screwed into a tapered threaded opening to grip the extension 13.
GB16470/58A 1957-05-25 1958-05-22 Improvements in or relating to linearity control devices for television receivers Expired GB828405A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE828405X 1957-05-25

Publications (1)

Publication Number Publication Date
GB828405A true GB828405A (en) 1960-02-17

Family

ID=6748287

Family Applications (1)

Application Number Title Priority Date Filing Date
GB16470/58A Expired GB828405A (en) 1957-05-25 1958-05-22 Improvements in or relating to linearity control devices for television receivers

Country Status (2)

Country Link
FR (1) FR1196376A (en)
GB (1) GB828405A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1289096B (en) * 1964-08-11 1969-02-13 Philips Nv Coil arrangement with a settable core, especially linearity controller for television sets
GB2259190A (en) * 1991-09-02 1993-03-03 Ibm Non-linear inductors

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4331907A (en) * 1980-04-04 1982-05-25 Rca Corporation Deflection circuit linearity coil

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1289096B (en) * 1964-08-11 1969-02-13 Philips Nv Coil arrangement with a settable core, especially linearity controller for television sets
GB2259190A (en) * 1991-09-02 1993-03-03 Ibm Non-linear inductors

Also Published As

Publication number Publication date
FR1196376A (en) 1959-11-24

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