JPS57206185A - Convergence device - Google Patents

Convergence device

Info

Publication number
JPS57206185A
JPS57206185A JP56091838A JP9183881A JPS57206185A JP S57206185 A JPS57206185 A JP S57206185A JP 56091838 A JP56091838 A JP 56091838A JP 9183881 A JP9183881 A JP 9183881A JP S57206185 A JPS57206185 A JP S57206185A
Authority
JP
Japan
Prior art keywords
vcc
circuit
convergence
current
sources
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
JP56091838A
Other languages
Japanese (ja)
Other versions
JPS6329879B2 (en
Inventor
Masaru Ishikawa
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.)
Panasonic Holdings Corp
Original Assignee
Matsushita Electric Industrial 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 Matsushita Electric Industrial Co Ltd filed Critical Matsushita Electric Industrial Co Ltd
Priority to JP56091838A priority Critical patent/JPS57206185A/en
Publication of JPS57206185A publication Critical patent/JPS57206185A/en
Publication of JPS6329879B2 publication Critical patent/JPS6329879B2/ja
Granted 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

Landscapes

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

Abstract

PURPOSE:To prevent a large current deflected to a single side due to the nonadjustment, the misadjustment, etc. of a convergence circuit and to protect the convergence circuit, by providing a current detecting circuit at the positive and negative sides respectively. CONSTITUTION:The positive and negative power supplies +VCC and -VCC are applied to the positive and negative current detecting circuits 20 and 21 respectively. The circuits 20 and 21 detect that the currents supplied from the sources +VCC and -VCC are amplified up to the level higher than the prescribed value. Thus the circuits 20 and 21 supply the detection signals to a convergence control circuit 19 to lose the balance between the sources +VCC and -VCC which are applied to a convergence output amplifying circuit 1. Thus the current larger than the prescribed value is decreased, and the other current is increased. Then a large current deflected to a single side can be prevented to protect the circuit 1 and the sources +VCC and -VCC from the breakdown.
JP56091838A 1981-06-15 1981-06-15 Convergence device Granted JPS57206185A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP56091838A JPS57206185A (en) 1981-06-15 1981-06-15 Convergence device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP56091838A JPS57206185A (en) 1981-06-15 1981-06-15 Convergence device

Publications (2)

Publication Number Publication Date
JPS57206185A true JPS57206185A (en) 1982-12-17
JPS6329879B2 JPS6329879B2 (en) 1988-06-15

Family

ID=14037724

Family Applications (1)

Application Number Title Priority Date Filing Date
JP56091838A Granted JPS57206185A (en) 1981-06-15 1981-06-15 Convergence device

Country Status (1)

Country Link
JP (1) JPS57206185A (en)

Also Published As

Publication number Publication date
JPS6329879B2 (en) 1988-06-15

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