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GB1497877A - Apparatus for generating high voltage for cathode-ray tub - Google Patents

Apparatus for generating high voltage for cathode-ray tub

Info

Publication number
GB1497877A
GB1497877A GB473075A GB473075A GB1497877A GB 1497877 A GB1497877 A GB 1497877A GB 473075 A GB473075 A GB 473075A GB 473075 A GB473075 A GB 473075A GB 1497877 A GB1497877 A GB 1497877A
Authority
GB
United Kingdom
Prior art keywords
sections
primary
turns
divided
harmonic
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
GB473075A
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.)
Hitachi Ltd
Original Assignee
Hitachi 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 Hitachi Ltd filed Critical Hitachi Ltd
Publication of GB1497877A publication Critical patent/GB1497877A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F38/00—Adaptations of transformers or inductances for specific applications or functions
    • H01F38/42—Flyback transformers
    • 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
    • H04N3/18—Generation of supply voltages, in combination with electron beam deflecting
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F5/00—Coils
    • H01F5/02—Coils wound on non-magnetic supports, e.g. formers
    • H01F2005/022—Coils wound on non-magnetic supports, e.g. formers wound on formers with several winding chambers separated by flanges, e.g. for high voltage applications

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Rectifiers (AREA)
  • Details Of Television Scanning (AREA)
  • Coils Or Transformers For Communication (AREA)

Abstract

1497877 D.C.-D.C. converters for TV receivers HITACHI Ltd 4 Feb 1975 [4 Feb 1974] 4730/75 Heading H2F [Also in Division H1] Apparatus for generating high voltage for the cathode-ray tube of a TV receiver comprises a transformer the primary winding of which is divided into sections of differing winding density or differing numbers of turns and a secondary winding which is divided by means of diodes into sections, one section (or group of sections) being tuned to the fifth harmonic of the fly-back frequency while another section (or group of sections) is tuned to a further odd harmonic (e.g. the seventh harmonic) of the fly-back frequency. As shown in Fig. 7, the secondary is divided into five sections each separated by a diode, and tappings being connected to the phosphor 12, the shadow mask 13, the anode 14 and the focussing electrode 15. Fig. 6 shows the transformer construction which comprises a primary bobbin 10 having primary windings 3, surrounded by a secondary bobbin 11 having secondary windings 41 ... 43 separated by diodes 7, 8, 9. The tuning to the required harmonics is achieved by choosing the appropriate number of turns of primary and secondary sections, relative to the self capacitance. In Fig. 2 (not shown) the primary winding may be distributed into 8 sections having 3 different numbers of turns. The invention reduces the effect of variation of EHT voltage with changes in beam current.
GB473075A 1974-02-04 1975-02-04 Apparatus for generating high voltage for cathode-ray tub Expired GB1497877A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1374274A JPS50109625A (en) 1974-02-04 1974-02-04

Publications (1)

Publication Number Publication Date
GB1497877A true GB1497877A (en) 1978-01-12

Family

ID=11841701

Family Applications (1)

Application Number Title Priority Date Filing Date
GB473075A Expired GB1497877A (en) 1974-02-04 1975-02-04 Apparatus for generating high voltage for cathode-ray tub

Country Status (3)

Country Link
JP (1) JPS50109625A (en)
DE (1) DE2504355C3 (en)
GB (1) GB1497877A (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2911152A1 (en) * 1978-03-23 1979-09-27 Tokyo Shibaura Electric Co LINE (DEFLECTION) TRANSFORMER
DE3810314A1 (en) * 1988-03-26 1989-10-05 Electronic Werke Deutschland High-tension transformer for a television receiver
DE3902219A1 (en) * 1989-01-26 1990-08-02 Electronic Werke Deutschland Compartment coil former for the high-tension transformer of a television receiver
DE4039373A1 (en) * 1990-12-10 1992-06-11 Thomson Brandt Gmbh HIGH VOLTAGE TRANSFORMER
RU2418333C1 (en) * 2010-03-15 2011-05-10 Аркадий Анатольевич Степанов Resonance transformer

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5273613U (en) * 1975-11-28 1977-06-02
JPS5454450U (en) * 1977-09-16 1979-04-14
DE2807283A1 (en) * 1978-02-21 1979-08-30 Blaupunkt Werke Gmbh TRANSFORMER
US4247889A (en) 1979-02-23 1981-01-27 Blaupunkt-Werke Gmbh High-voltage-secondary transformer, particularly television line transformer
DE3033979A1 (en) * 1980-09-10 1982-04-22 Blaupunkt-Werke Gmbh, 3200 Hildesheim TRANSFORMER
DE3151642A1 (en) * 1981-12-28 1983-07-14 Standard Elektrik Lorenz Ag, 7000 Stuttgart LINE TRANSFORMER FOR TELEVISION DEVICES
DE19510678A1 (en) * 1995-03-27 1996-10-02 Thomson Brandt Gmbh High voltage transformer for a television receiver

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4870428A (en) * 1971-12-23 1973-09-25

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2911152A1 (en) * 1978-03-23 1979-09-27 Tokyo Shibaura Electric Co LINE (DEFLECTION) TRANSFORMER
DE3810314A1 (en) * 1988-03-26 1989-10-05 Electronic Werke Deutschland High-tension transformer for a television receiver
DE3902219A1 (en) * 1989-01-26 1990-08-02 Electronic Werke Deutschland Compartment coil former for the high-tension transformer of a television receiver
DE4039373A1 (en) * 1990-12-10 1992-06-11 Thomson Brandt Gmbh HIGH VOLTAGE TRANSFORMER
RU2418333C1 (en) * 2010-03-15 2011-05-10 Аркадий Анатольевич Степанов Resonance transformer

Also Published As

Publication number Publication date
DE2504355A1 (en) 1975-08-14
JPS50109625A (en) 1975-08-28
DE2504355B2 (en) 1978-11-09
DE2504355C3 (en) 1979-07-12

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Legal Events

Date Code Title Description
PS Patent sealed
PCNP Patent ceased through non-payment of renewal fee

Effective date: 19930204