JPS56106473A - Bright sopt erasing circuit - Google Patents

Bright sopt erasing circuit

Info

Publication number
JPS56106473A
JPS56106473A JP951580A JP951580A JPS56106473A JP S56106473 A JPS56106473 A JP S56106473A JP 951580 A JP951580 A JP 951580A JP 951580 A JP951580 A JP 951580A JP S56106473 A JPS56106473 A JP S56106473A
Authority
JP
Japan
Prior art keywords
cathode
circuit
resistance
bright
sopt
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.)
Granted
Application number
JP951580A
Other languages
Japanese (ja)
Other versions
JPS6364950B2 (en
Inventor
Tokuo Maeda
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.)
Tokyo Sanyo Electric Co Ltd
Sanyo Electric Co Ltd
Original Assignee
Tokyo Sanyo Electric Co Ltd
Sanyo Electric Co 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 Tokyo Sanyo Electric Co Ltd, Sanyo Electric Co Ltd filed Critical Tokyo Sanyo Electric Co Ltd
Priority to JP951580A priority Critical patent/JPS56106473A/en
Publication of JPS56106473A publication Critical patent/JPS56106473A/en
Publication of JPS6364950B2 publication Critical patent/JPS6364950B2/ja
Granted 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)
  • Details Of Television Scanning (AREA)

Abstract

PURPOSE:To prevent the occurrence of bright spots when the power supply switch is turned off, by connecting a serial circuit of the capacity and the resistance having a large time constant to a cathode circuit. CONSTITUTION:The DC component reproduced through the DC reproducing circuit 5 is applied to the cathode of the cathode-ray tube 24. At the same time, the flyback pulse FBP is applied to the cathode via the diodes 14 and 15, the load resistance 13 and the peaking coil 12. The time constant circuit 18 consisting of a serial circuit of the resistance 19 and the capacity 20 is connected to the point of junction between the resistance 13 and the diode 15. In such constitution, the potential of the cathode is kept at the cut-off voltage when the power supply switch is turned off. Accordingly no bright spot is produced.
JP951580A 1980-01-29 1980-01-29 Bright sopt erasing circuit Granted JPS56106473A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP951580A JPS56106473A (en) 1980-01-29 1980-01-29 Bright sopt erasing circuit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP951580A JPS56106473A (en) 1980-01-29 1980-01-29 Bright sopt erasing circuit

Publications (2)

Publication Number Publication Date
JPS56106473A true JPS56106473A (en) 1981-08-24
JPS6364950B2 JPS6364950B2 (en) 1988-12-14

Family

ID=11722387

Family Applications (1)

Application Number Title Priority Date Filing Date
JP951580A Granted JPS56106473A (en) 1980-01-29 1980-01-29 Bright sopt erasing circuit

Country Status (1)

Country Link
JP (1) JPS56106473A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS60134364U (en) * 1984-02-17 1985-09-06 株式会社富士通ゼネラル TV receiver spot killer device

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS60134364U (en) * 1984-02-17 1985-09-06 株式会社富士通ゼネラル TV receiver spot killer device

Also Published As

Publication number Publication date
JPS6364950B2 (en) 1988-12-14

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