KR970056813A - Focus / screen grid voltage generator - Google Patents

Focus / screen grid voltage generator Download PDF

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Publication number
KR970056813A
KR970056813A KR1019950072399A KR19950072399A KR970056813A KR 970056813 A KR970056813 A KR 970056813A KR 1019950072399 A KR1019950072399 A KR 1019950072399A KR 19950072399 A KR19950072399 A KR 19950072399A KR 970056813 A KR970056813 A KR 970056813A
Authority
KR
South Korea
Prior art keywords
voltage
focus
screen grid
rectifier
grid voltage
Prior art date
Application number
KR1019950072399A
Other languages
Korean (ko)
Other versions
KR0178839B1 (en
Inventor
장문수
Original Assignee
서두칠
대우전자부품 주식회사
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 서두칠, 대우전자부품 주식회사 filed Critical 서두칠
Priority to KR1019950072399A priority Critical patent/KR0178839B1/en
Publication of KR970056813A publication Critical patent/KR970056813A/en
Application granted granted Critical
Publication of KR0178839B1 publication Critical patent/KR0178839B1/en

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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
    • H04N3/19—Arrangements or assemblies in supply circuits for the purpose of withstanding high voltages
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F38/00—Adaptations of transformers or inductances for specific applications or functions
    • H01F38/42—Flyback transformers

Abstract

본 발명은 CPT를 표시 화면으로 사용하는 기기에서 플라이백 트랜스의 유도전압을 이용하여 CPT의 초점 전압 및 스크린 그리드 전압을 발생시키는 것이다. 본 발명은 별도의 포커스 팩을 사용하지 않고, 간단히 초점 전압 및 스크린 그리드 전압을 발생하는 것으로서 플라이백 트랜스의 일차 코일에서 발생되는 약800V의 전압을 정류기로 정류하고, 정류기의 출력전압을 스크린 그리드 전압 조절용 가변 저항으로 분할하여 스크린 그리드 전압을 발생함과 아울러 정류기의 출력단자에 초점전압 조절용 가변저항을 접속하며, 초점전압 조절용 가변저항의 가변 단자와 CPT의 고압 출력단자의 사이에 2개의 블리더 저항을 연결하여 블리더 저항의 접속점에서 초점 전압이 출력되게 한다.The present invention is to generate the focus voltage and the screen grid voltage of the CPT using the induced voltage of the flyback transformer in the device using the CPT as a display screen. The present invention does not use a separate focus pack, and simply generates a focus voltage and a screen grid voltage, rectifies a voltage of about 800 V generated in the primary coil of the flyback transformer with a rectifier, and outputs the rectifier's output voltage to the screen grid voltage. It divides into adjustable variable resistor to generate screen grid voltage, and connects the variable resistor for focus voltage control to the output terminal of the rectifier, and the two bleeder resistors between the variable terminal of the variable resistor for focus voltage control and the high voltage output terminal of CPT. Connect to make the focus voltage output at the connection point of the bleeder resistor.

Description

초점/스크린 그리드 전압 발생회로Focus / screen grid voltage generator

본 내용은 요부공개 건이므로 전문내용을 수록하지 않았음Since this is an open matter, no full text was included.

제2도는 본 발명의 초점/스크린 그리드 전압 발생횔도.2 is a focus / screen grid voltage generation diagram of the present invention.

Claims (1)

플라이백 트랜스(FBT)의 중간단자에서 발생되는 800V 의 전압을 정류하는 정류기(11)와, 상기 정류기(11)의 출력 정압을 분할하여 스크린 그리드 전압으로 출력하는 스크린 그리드 전압 조절용 가변저항(VR11) 및 저항(R12)과, 상기 정류기(11)의 출력 단자에 접속되어 초점 전압을 조절하는 조접 전압 조절용 가변저항(R12)과 상기 가변저항(R12)의 가변단자와 플라이백 트랜스 (FBT)의 고압 출력 단자의 사이에 전압을 분할하여 초점 전압으로 출력하는 블리더 저항(R13R14)으로 구성됨을 특징으로 하는 초점/스크린 그리도 전압 발생회로.A flyback transformer (FBT) and a rectifier 11 for rectifying the voltage of 800V is generated at the intermediate terminal, dividing the output static pressure of the rectifier 11 to the screen grid voltage the screen grid voltage adjusting variable resistor for output to the (VR 11 ) and a resistor (R 12) and, with a flyback transformer variable terminal of jojeop voltage adjusting variable resistor (R 12) and the variable resistor (R 12) which is connected to the output terminal of the rectifier 11 control the focus voltage ( And a bleeder resistor (R 13 R 14 ) for dividing a voltage between the high voltage output terminals of the FBT) and outputting it as a focus voltage. ※ 참고사항 : 최초출원 내용에 의하여 공개하는 것임.※ Note: The disclosure is based on the initial application.
KR1019950072399A 1995-12-30 1995-12-30 Focus/screen voltage generating circuit KR0178839B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR1019950072399A KR0178839B1 (en) 1995-12-30 1995-12-30 Focus/screen voltage generating circuit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1019950072399A KR0178839B1 (en) 1995-12-30 1995-12-30 Focus/screen voltage generating circuit

Publications (2)

Publication Number Publication Date
KR970056813A true KR970056813A (en) 1997-07-31
KR0178839B1 KR0178839B1 (en) 1999-05-01

Family

ID=19448945

Family Applications (1)

Application Number Title Priority Date Filing Date
KR1019950072399A KR0178839B1 (en) 1995-12-30 1995-12-30 Focus/screen voltage generating circuit

Country Status (1)

Country Link
KR (1) KR0178839B1 (en)

Also Published As

Publication number Publication date
KR0178839B1 (en) 1999-05-01

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