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JPS5763968A - High voltage stbilizing system - Google Patents

High voltage stbilizing system

Info

Publication number
JPS5763968A
JPS5763968A JP13917980A JP13917980A JPS5763968A JP S5763968 A JPS5763968 A JP S5763968A JP 13917980 A JP13917980 A JP 13917980A JP 13917980 A JP13917980 A JP 13917980A JP S5763968 A JPS5763968 A JP S5763968A
Authority
JP
Japan
Prior art keywords
voltage
high voltage
comparison
circuit
output
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
JP13917980A
Other languages
Japanese (ja)
Other versions
JPS6340386B2 (en
Inventor
Mitsunobu Iwabuchi
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.)
Kokusai Denki Electric Inc
Original Assignee
Hitachi Denshi KK
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 Denshi KK filed Critical Hitachi Denshi KK
Priority to JP13917980A priority Critical patent/JPS5763968A/en
Publication of JPS5763968A publication Critical patent/JPS5763968A/en
Publication of JPS6340386B2 publication Critical patent/JPS6340386B2/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
    • H04N3/18—Generation of supply voltages, in combination with electron beam deflecting
    • H04N3/185—Maintaining DC voltage constant

Landscapes

  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Continuous-Control Power Sources That Use Transistors (AREA)
  • Details Of Television Scanning (AREA)

Abstract

PURPOSE:To increase the degree of stabilization to the change of load for a high voltage power source for cathode-ray tube, by stabilizing both the positive and negative DC high voltage through different control circuits respectively. CONSTITUTION:The peak-to-peak voltage of the secondary winding of a booster transformer 2 is detected through a voltage detecting circuit 11. This detection output is applied to a control circuit 9 to be compared with comparison voltage ER1. Thus a driving circuit 1 is controlled by the output of comparison to stabilize the AC voltage generated at the secondary wiring. As a result, the positive DC high voltage +EA is stabilized. On the other hand, the negative DC high voltage -EK is applied to an error amplifier 12 through a voltage dividing circuit 8 to be compared with the reference voltage ER2. The output of comparison is applied to an output terminal having the earth potential close to that of a rectifying circuit 7 to stablize the voltage -EK. Accordingly the display of a cathode-ray tube has no change of size although the brightness is varied.
JP13917980A 1980-10-03 1980-10-03 High voltage stbilizing system Granted JPS5763968A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP13917980A JPS5763968A (en) 1980-10-03 1980-10-03 High voltage stbilizing system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP13917980A JPS5763968A (en) 1980-10-03 1980-10-03 High voltage stbilizing system

Publications (2)

Publication Number Publication Date
JPS5763968A true JPS5763968A (en) 1982-04-17
JPS6340386B2 JPS6340386B2 (en) 1988-08-10

Family

ID=15239402

Family Applications (1)

Application Number Title Priority Date Filing Date
JP13917980A Granted JPS5763968A (en) 1980-10-03 1980-10-03 High voltage stbilizing system

Country Status (1)

Country Link
JP (1) JPS5763968A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4901156A (en) * 1986-12-26 1990-02-13 Goldstart Co., Ltd. Automatic brightness limiting circuit

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4901156A (en) * 1986-12-26 1990-02-13 Goldstart Co., Ltd. Automatic brightness limiting circuit

Also Published As

Publication number Publication date
JPS6340386B2 (en) 1988-08-10

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