GB878440A - Improvements in or relating to circuit arrangements for the prevention of screen burning of a display tube in a television receiver shortly after the latter has been switched off - Google Patents

Improvements in or relating to circuit arrangements for the prevention of screen burning of a display tube in a television receiver shortly after the latter has been switched off

Info

Publication number
GB878440A
GB878440A GB1181560A GB1181560A GB878440A GB 878440 A GB878440 A GB 878440A GB 1181560 A GB1181560 A GB 1181560A GB 1181560 A GB1181560 A GB 1181560A GB 878440 A GB878440 A GB 878440A
Authority
GB
United Kingdom
Prior art keywords
television receiver
relating
prevention
switched
display tube
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
GB1181560A
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 GB878440A publication Critical patent/GB878440A/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
    • H04N3/20—Prevention of damage to cathode-ray tubes in the event of failure of scanning

Landscapes

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

Abstract

878,440. Cathode-ray tube circuits. PHILIPS ELECTRICAL INDUSTRIES Ltd. April 4, 1960 [April 7, 1959], No. 11815/60. Class 40(7) In order to reduce brightness modulation arising from grid-cathode bias variation with H.T. voltage due to mains voltage fluctuation, a television receiver C.R.T. screen burn protection circuit, of the kind in which the beam current is maintained after switching off in order to discharge the final anode smoothing capacitor rapidly, includes a voltage-dependent resistor 15 in series with capacitor 14.
GB1181560A 1959-04-07 1960-04-04 Improvements in or relating to circuit arrangements for the prevention of screen burning of a display tube in a television receiver shortly after the latter has been switched off Expired GB878440A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
NL237887A NL107585C (en) 1959-04-07 1959-04-07

Publications (1)

Publication Number Publication Date
GB878440A true GB878440A (en) 1961-09-27

Family

ID=19851487

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1181560A Expired GB878440A (en) 1959-04-07 1960-04-04 Improvements in or relating to circuit arrangements for the prevention of screen burning of a display tube in a television receiver shortly after the latter has been switched off

Country Status (6)

Country Link
BE (1) BE589426A (en)
DE (1) DE1108263B (en)
DK (1) DK93747C (en)
FR (1) FR1253146A (en)
GB (1) GB878440A (en)
NL (1) NL107585C (en)

Also Published As

Publication number Publication date
FR1253146A (en) 1961-02-03
DK93747C (en) 1962-06-25
NL237887A (en)
BE589426A (en) 1960-10-05
DE1108263B (en) 1961-06-08
NL107585C (en) 1964-03-16

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