KR940017705A - Supply voltage control circuit of multi-mode monitor - Google Patents

Supply voltage control circuit of multi-mode monitor Download PDF

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Publication number
KR940017705A
KR940017705A KR1019920026566A KR920026566A KR940017705A KR 940017705 A KR940017705 A KR 940017705A KR 1019920026566 A KR1019920026566 A KR 1019920026566A KR 920026566 A KR920026566 A KR 920026566A KR 940017705 A KR940017705 A KR 940017705A
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KR
South Korea
Prior art keywords
mode
monitor
transistor
power
control
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KR1019920026566A
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Korean (ko)
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KR960007920B1 (en
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전일진
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이헌조
주식회사 금성사
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Priority to KR1019920026566A priority Critical patent/KR960007920B1/en
Publication of KR940017705A publication Critical patent/KR940017705A/en
Application granted granted Critical
Publication of KR960007920B1 publication Critical patent/KR960007920B1/en

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    • 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

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  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Details Of Television Scanning (AREA)

Abstract

본 발명은 멀티모드(Multi Sync Mode)모니터에서 다양한 수평주파수에 따라 모니터에 공급되는 전원(애노우드 공급 고압)을 각 모드에 맞게 선택하여 안정화 전원으로 공급해주는 멀티모드 머니터의 전원전압 제어회로에 관한 것이다.The present invention is a multi-mode monitor power supply voltage control circuit that selects the power supplied to the monitor according to various horizontal frequencies (multi-mode sync voltage) according to each mode to supply a stabilized power supply It is about.

종래의 모니터 고압 인가회로는 수평주파수 변화에 대응할수 없으므로 수평주파수가 높아졌을때 고압이 낮아지게 되어 화상의 왜곡이 발생되는 문제점이 있다.Since the conventional monitor high voltage application circuit cannot cope with the horizontal frequency change, the high voltage is lowered when the horizontal frequency is increased, thereby causing distortion of the image.

본 발명은 멀티모드 모니터의 모드 판별결과에 따라 플라이백 트랜스에 인가되는 전원레벨을 다양하게 선택하여 공급해 주므로서 플라이백 트랜스 2차측에서 모니터 애노우드에 공급되는 고압을 수평주파수 변화에 관계없이 안정화시켜 공급해줄수 있고, 이에따른 균일한 수평편향의 확보와 화면왜곡 방지를 기할수 있도록한 것으로, 멀티싱크 모니터에 적용한다.The present invention stabilizes the high pressure supplied to the monitor anode on the secondary side of the flyback transformer regardless of the horizontal frequency change by supplying various power levels applied to the flyback transformer according to the mode discrimination result of the multi-mode monitor. It is possible to supply, to ensure a uniform horizontal deflection and to prevent distortion of the screen, which is applied to a multi-sync monitor.

Description

멀티모드 모니터의 전원전압 제어회로Supply voltage control circuit of multi-mode monitor

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

제1도는 종래의 모니터의 전원공급 회로도, 제2도는 본 발명의 멀티모드 모니터의 전원전압 제어회로도, 제3도는 각 모드에 따른 본 발명 회로의 동작관계를 나타낸 도표.1 is a power supply circuit diagram of a conventional monitor, FIG. 2 is a power supply voltage control circuit diagram of a multi-mode monitor of the present invention, and FIG. 3 is a diagram showing an operation relationship of the circuit of the present invention according to each mode.

Claims (2)

모니터의 동작모드 판별신호(M1)(M2)를 입력받아 각 모드에 알맞는 전원이 선택되어 공급되도록 스위칭 제어를 수행하는 전원선택 제어부(4)와, 상기 전원선택 제어부(4)의 제어를 받아 플라이백 트랜스(FBT)의 제1전원(B1+)을선택하여 공급해주는 제1스위칭부(5)와, 상기 전원선택 제어부(4)의 제어를 받아 플라이백 트랜스(FBT)의 제2전원(B2+)을 선택하여 공급해주는 제2스위칭부(6)와, 상기 전원선택 제어부(4)의 제어를 받아 플라이백 트랜스(FBT)의 제3전원(B3+)을 선택하여 공급해주는 제3스위칭부(7)로 구성된 멀티모드 모니터의 전원전압 제어회로.A power selection control unit 4 which performs a switching control to receive the operation mode determination signals M1 and M2 of the monitor and selects a power suitable for each mode, and receives the control of the power selection control unit 4 A first switching unit 5 which selects and supplies a first power B1 + of the flyback transformer FBT, and a second power source of the flyback transformer FBT under the control of the power selection controller 4; A second switching unit 6 which selects and supplies B2 + ) and a third switching unit which selects and supplies a third power source B3 + of the flyback transformer FBT under the control of the power selection controller 4. A power supply voltage control circuit of a multi-mode monitor consisting of sections (7). 제1항에 있어서, 상기 전원선택 제어부(4)는 입력된 모드판별신호(M1)(M2)에 의하여 온/오프되는 트랜지스터(Q5)와, 상기 트랜지스터(Q5)출력을 반전시켜 제3스위칭부(7)를 온/오프 제어하는 트랜지스터(Q6)와, 모드판별신호(M2)에 의하여 온/오프되어 제2스위칭부(6)를 온/오프 제어하는 트랜지스터(Q2)와, 상기 모드판별신호(M1)(M2)를 상기트랜지스터(Q5)베이스에 공통 공급하며 모드판별신호(M1)에 의한 상기 트랜지스터(Q2) 동작을 방지해주기 위한 다이오드(D2)(D3)와, 상기 각 트랜지스터들의 바이오스 공급을 위한 저항(R1-R12)으로 구성되고, 상기 제1스위칭부(5)는 제1전원(B1+)을 공급하는 다이오드(D8)로 구성되고, 상기 제2스위칭부(5)는 제2전원(B2+)의 공급경로를 스위칭 제어하는 트랜지스터(Q3)(Q4) 및 출력 다이오드(D5)로 구성되고, 상기 제3스위칭부(7)는 제3전원(B3+)의 공급경로를 스위칭 제어하는 트랜지스터(Q7)(Q8) 및 출력 다이오드(D7)로 구성된 멀티모드 모니터의 전원전압 제어회로.The third switching unit of claim 1, wherein the power selection controller 4 inverts the transistor Q5 turned on and off by the input mode discrimination signal M1 and M2 and the output of the transistor Q5. A transistor Q6 for turning on / off control of (7), a transistor Q2 for turning on / off the second switching unit 6 by being turned on / off by the mode discriminating signal M2, and the mode discriminating signal A diode D2 and a D3 for supplying M1 and M2 to the base of the transistor Q5 and preventing the transistor Q2 from being operated by a mode discrimination signal M1, and a bios supply of the transistors. The first switching unit 5 is composed of a diode (D8) for supplying a first power source (B1 + ), the second switching unit (5) is a second consists of a transistor (Q3) (Q4) and the output diode (D5) for switching control of the power supply path of the (B2 +), the third switching unit 7 is the third I (B3 +) a supply path switching control transistor (Q7) (Q8) and an output diode (D7) of a multi-mode monitor the power supply voltage control circuit consisting of a. ※ 참고사항 : 최초출원 내용에 의하여 공개하는 것임.※ Note: The disclosure is based on the initial application.
KR1019920026566A 1992-12-30 1992-12-30 Power voltage control circuit of multi-mode monitor KR960007920B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR1019920026566A KR960007920B1 (en) 1992-12-30 1992-12-30 Power voltage control circuit of multi-mode monitor

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1019920026566A KR960007920B1 (en) 1992-12-30 1992-12-30 Power voltage control circuit of multi-mode monitor

Publications (2)

Publication Number Publication Date
KR940017705A true KR940017705A (en) 1994-07-27
KR960007920B1 KR960007920B1 (en) 1996-06-15

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20010035721A (en) * 1999-10-01 2001-05-07 박종섭 Power supply circuit for switching voltage
KR100587543B1 (en) * 1998-08-07 2006-06-08 톰슨 콘슈머 일렉트로닉스, 인코포레이티드 A power supply for a deflection circuit operating at multi-scan frequencies

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100587543B1 (en) * 1998-08-07 2006-06-08 톰슨 콘슈머 일렉트로닉스, 인코포레이티드 A power supply for a deflection circuit operating at multi-scan frequencies
KR20010035721A (en) * 1999-10-01 2001-05-07 박종섭 Power supply circuit for switching voltage

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Publication number Publication date
KR960007920B1 (en) 1996-06-15

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