GB812781A - Arrangement for limiting the interference noises and voltage peaks in a sweep transformer, particularly of television receivers - Google Patents

Arrangement for limiting the interference noises and voltage peaks in a sweep transformer, particularly of television receivers

Info

Publication number
GB812781A
GB812781A GB39451/56A GB3945156A GB812781A GB 812781 A GB812781 A GB 812781A GB 39451/56 A GB39451/56 A GB 39451/56A GB 3945156 A GB3945156 A GB 3945156A GB 812781 A GB812781 A GB 812781A
Authority
GB
United Kingdom
Prior art keywords
sawtooth
voltage
transformer
limiting
waveform
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
GB39451/56A
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.)
STC PLC
Original Assignee
Standard Telephone and Cables PLC
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 Standard Telephone and Cables PLC filed Critical Standard Telephone and Cables PLC
Publication of GB812781A publication Critical patent/GB812781A/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
    • H04N3/18—Generation of supply voltages, in combination with electron beam deflecting
    • 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
    • H03K4/10—Generating pulses having essentially a finite slope or stepped portions having triangular shape having sawtooth shape using as active elements vacuum tubes only
    • H03K4/26—Generating pulses having essentially a finite slope or stepped portions having triangular shape having sawtooth shape using as active elements vacuum tubes only in which a sawtooth current is produced through an inductor

Landscapes

  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Transforming Electric Information Into Light Information (AREA)
  • Details Of Television Scanning (AREA)

Abstract

812,781. Sawtooth generator circuits. STANDARD TELEPHONES & CABLES Ltd. Dec. 28, 1956 [Dec. 31, 1955], No. 39451/56. Class 40 (6). In a sawtooth waveform generator the linearity of the sawtooth is improved by eliminating voltage peaks by means of a diode voltage-limiting circuit connected across at least part of the output transformer winding so that the diode conducts during the flyback period. The Figure shows a sawtooth deflection system for a cathode-ray tube 8 of a television receiver in which a sawtooth voltage waveform from a discharge tube V is applied via a transformer to deflecting coils 7. Lamination noise in the transformer and unwanted peaks in the sawtooth waveform are eliminated by damping circuits such as gas tubes 13 or 14 which may be connected across a special transformer winding 41 or by biased rectifier 15. The D.C. voltage from the rectifier 15 may be used as a D.C. supply for a non-loading part of the circuit, e.g. as a grid-bias supply. The glow from the gas tube may be used to indicate readiness of operation of the television set.
GB39451/56A 1955-12-31 1956-12-28 Arrangement for limiting the interference noises and voltage peaks in a sweep transformer, particularly of television receivers Expired GB812781A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE812781X 1955-12-31

Publications (1)

Publication Number Publication Date
GB812781A true GB812781A (en) 1959-04-29

Family

ID=6731459

Family Applications (1)

Application Number Title Priority Date Filing Date
GB39451/56A Expired GB812781A (en) 1955-12-31 1956-12-28 Arrangement for limiting the interference noises and voltage peaks in a sweep transformer, particularly of television receivers

Country Status (2)

Country Link
DE (1) DE1074642B (en)
GB (1) GB812781A (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1202824B (en) * 1962-12-19 1965-10-14 Blaupunkt Werke Gmbh TV receiver with a blocking element

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH164383A (en) * 1932-05-13 1933-09-30 Mezey Nicolas Device for attenuating the effect of electro-motive forces foreign to those which give rise to radio currents from a receiving station.
DE1675856U (en) * 1954-02-12 1954-05-06 Telefunken Gmbh HOLDING DEVICE FOR THE FERRITE CORE OF A TRANSFORMER.

Also Published As

Publication number Publication date
DE1074642B (en) 1960-02-04

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