ES380450A1 - Circuit arrangement including an auxiliary coil for generating a magnetic field periodically varying with time and being adjustable in amplitude - Google Patents

Circuit arrangement including an auxiliary coil for generating a magnetic field periodically varying with time and being adjustable in amplitude

Info

Publication number
ES380450A1
ES380450A1 ES380450A ES380450A ES380450A1 ES 380450 A1 ES380450 A1 ES 380450A1 ES 380450 A ES380450 A ES 380450A ES 380450 A ES380450 A ES 380450A ES 380450 A1 ES380450 A1 ES 380450A1
Authority
ES
Spain
Prior art keywords
magnetic field
amplitude
adjustable
generating
auxiliary coil
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
ES380450A
Other languages
Spanish (es)
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.)
Koninklijke Philips NV
Original Assignee
Philips Gloeilampenfabrieken NV
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 Gloeilampenfabrieken NV filed Critical Philips Gloeilampenfabrieken NV
Publication of ES380450A1 publication Critical patent/ES380450A1/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N9/00—Details of colour television systems
    • H04N9/12—Picture reproducers
    • H04N9/16—Picture reproducers using cathode ray tubes
    • H04N9/28—Arrangements for convergence or focusing
    • 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
    • H04N3/233—Distortion correction, e.g. for pincushion distortion correction, S-correction using active elements

Landscapes

  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Video Image Reproduction Devices For Color Tv Systems (AREA)

Abstract

A circuit for clamping a magnetic field, such as a television convergence field has a main coil with A.C. current applied to it for generating part of the field. An auxiliary coil is wound on the same core and has applied to it a D.C. current that has a value equal to the average of the A.C. current. Therefore, an extreme value of the resultant field is clamped.
ES380450A 1969-06-07 1970-06-05 Circuit arrangement including an auxiliary coil for generating a magnetic field periodically varying with time and being adjustable in amplitude Expired ES380450A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
NL6908715A NL6908715A (en) 1969-06-07 1969-06-07
NL7003282A NL7003282A (en) 1969-06-07 1970-03-07

Publications (1)

Publication Number Publication Date
ES380450A1 true ES380450A1 (en) 1973-04-01

Family

ID=26644439

Family Applications (1)

Application Number Title Priority Date Filing Date
ES380450A Expired ES380450A1 (en) 1969-06-07 1970-06-05 Circuit arrangement including an auxiliary coil for generating a magnetic field periodically varying with time and being adjustable in amplitude

Country Status (9)

Country Link
US (1) US3714495A (en)
AT (1) AT303846B (en)
AU (1) AU1589170A (en)
BE (1) BE751588A (en)
DE (1) DE2027895A1 (en)
ES (1) ES380450A1 (en)
FR (1) FR2045906A1 (en)
GB (1) GB1311184A (en)
NL (2) NL6908715A (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4849652A (en) * 1986-12-01 1989-07-18 U.S. Philips Corporation Circuit for producing a periodic, essentially parabolic signal
JP2001185059A (en) * 1999-12-22 2001-07-06 Toshiba Corp Color receiver tube device
TW465071B (en) * 2000-09-21 2001-11-21 Acer Comm & Amp Multimedia Inc Protection loop for horizontal transistor

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3258642A (en) * 1963-08-05 1966-06-28 Electron beam convergence apparatus
US3382400A (en) * 1965-02-26 1968-05-07 Sylvania Electric Prod Convergence circuit
US3586902A (en) * 1968-07-30 1971-06-22 Fernseh Gmbh Vertical deflection arrangement in a color television system

Also Published As

Publication number Publication date
AU1589170A (en) 1971-12-09
DE2027895A1 (en) 1970-12-23
NL7003282A (en) 1971-09-09
FR2045906A1 (en) 1971-03-05
AT303846B (en) 1972-12-11
GB1311184A (en) 1973-03-21
BE751588A (en) 1970-12-07
US3714495A (en) 1973-01-30
NL6908715A (en) 1970-12-09

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