KR950016207A - Overheating protection device of TV receiver - Google Patents

Overheating protection device of TV receiver Download PDF

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Publication number
KR950016207A
KR950016207A KR1019930023037A KR930023037A KR950016207A KR 950016207 A KR950016207 A KR 950016207A KR 1019930023037 A KR1019930023037 A KR 1019930023037A KR 930023037 A KR930023037 A KR 930023037A KR 950016207 A KR950016207 A KR 950016207A
Authority
KR
South Korea
Prior art keywords
temperature
vertical deflection
drive unit
dummyster
thr1
Prior art date
Application number
KR1019930023037A
Other languages
Korean (ko)
Other versions
KR970003430B1 (en
Inventor
김수헌
Original Assignee
배순훈
대우전자 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 배순훈, 대우전자 주식회사 filed Critical 배순훈
Priority to KR1019930023037A priority Critical patent/KR970003430B1/en
Publication of KR950016207A publication Critical patent/KR950016207A/en
Application granted granted Critical
Publication of KR970003430B1 publication Critical patent/KR970003430B1/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

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

Abstract

본 발명은 수직편향 구동부의 출력단의 온도를 감지하여 온도의 과잉 상승시에 수직편향 구동부의 출력단을 차단시키도록 된 텔레비젼 수상기의 과열보호장치에 관한 것으로써, 수직편향 구동부(1)의 출력단에 차례로 병렬·접속되어 있으면서 온도에 대한 저항특성이 서로 다른 2개의 더미스터(THR1, THR2)와, 이 2개의 더미스터 중 동일한 온도에서의 저항값이 상대적으로 더 큰 더미스터(THR1)의 후단에 접속되면서 이 더미스터(THR1)를 통해 일정레벨 이상의 전류가 흐르게 되면 턴온됨으로써 상기 수직편향 구동부(1)의 출력을 접지시키도록 된 스위칭 수단 트랜지스터(Q1), 동일한 온도에서의 저항값이 상대적으로 작은 더미스터(THR2)의 후단에 접속되면서 상기 수직편향 구동부(1)의 출력단 온도가 소정온도 이상으로 상승하면 발광하여 온도상승을 경고하도록 된 온도상승 경고회로(Z1), 상기 수직 평향 구동부(1)로부터의 구동출력이 일정레벨 이하로 되는 것을 검출하는 레벨검출 회로(2) 및, 상기 레벨 검출 회로(2)로부터의 검출신호에 따라 전원회로부(4)의 동작을 온·오프 제어하는 마이콤(3)을 구비하여 구성된 특징으로 한다.The present invention relates to an overheat protection device of a television receiver that senses the temperature of the output end of the vertical deflection drive unit and blocks the output end of the vertical deflection drive unit when the temperature rises excessively, and in parallel with the output end of the vertical deflection drive unit 1. The two dummysters THR1 and THR2 having different resistance characteristics with respect to temperature while being connected, and the resistance values at the same temperature among the two dummysters are connected to the rear end of the dummyster THR1 which is relatively larger. When a current of a predetermined level or more flows through the dummyster THR1, the switching means transistor Q1 which is turned on to ground the output of the vertical deflection driver 1, and a dummyster having a relatively small resistance value at the same temperature. When the output end temperature of the vertical deflection drive unit 1 rises above a predetermined temperature while being connected to the rear end of THR2, it emits light to warn the temperature rise. To the level detection circuit 2 for detecting that the locked temperature rise warning circuit Z1, the drive output from the vertical planar driver 1 is below a predetermined level, and the detection signal from the level detection circuit 2. Therefore, the microcomputer 3 is configured to control the operation of the power supply circuit unit 4 on and off.

Description

텔레비젼 수상기의 과열보호장치Overheating protection device of TV receiver

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

제1도는 본 발명의 1실시예에 따른 텔레비젼 수상기의 과열보호장치의 회로구성을 도시한 도면.1 is a diagram showing a circuit configuration of an overheat protection device for a television receiver according to an embodiment of the present invention.

* 도면의 주요부분에 대한 부호의 설명* Explanation of symbols for main parts of the drawings

1 : 수직편향 구동부 2 : 레벨검출 회로1: vertical deflection driving unit 2: level detection circuit

3 : 마이콤 4 : 전원회로부3: micom 4: power circuit

THR1, THR2 : 더미스터 Q1 : 트랜지스터THR1, THR2: Dummyster Q1: Transistor

D1 : 발광다이오드 Z1 : 온도상승 경고회로D1: Light emitting diode Z1: Temperature rise warning circuit

Claims (1)

수직편향 구동부(1)의 출력단에 차례로 병렬, 접속되어 있으면서 온도에 대한 저항특성이 서로 다른 2개의 더미스터(THR1, THR2)와, 이 2개의 더미스터중 동일한 온도에서의 저항값이 상대적으로 더 큰 더미스터(THR1)의 후단에 접속되면서 이 더미스터(THR1)를 통해 일정레벨 이상의 전류가 흐르게 되면 턴온됨으로써 상기 수직편향 구동부(1)의 출력을 접지시키도록 된 스위칭 수단(Q1), 동일한 온도에서의 저항값이 상대적으로 작은 더미스터(THR2)의 후단에 접속되면서 상기 수직편향 구동부(1)의 출력단 온도가 소정온도 이상으로 상승하면 발광하여 온도상승을 경고하도록 된 온도상승 경고회로(Z1), 상기 수직편향 구동부(1)로부터의 구동출력이 일정레벨 이하로 되는 것을 검출하는 레벨검출회로(2)및, 상기 레벨검출 회로(2)로부터의 검출신호에 따라 전원회로부(4)의 동작을 온, 오프되도록 제어하는 마이콤(3)을 구비하여 구성된 특징으로 하는 텔레비젼 수상기의 과열보호장치.Two dummysters THR1 and THR2, which are connected in parallel to the output terminal of the vertical deflection drive unit 1 in turn and differ from each other in temperature resistance, and have relatively higher resistance values at the same temperature among the two dummysters. Switching means Q1 connected to the rear end of the large dummyster THR1 and turned on when a current of a predetermined level or more flows through the dummyster THR1 to ground the output of the vertical deflection drive unit 1 and the same temperature. The temperature rise warning circuit Z1 is configured to emit light when the output stage temperature of the vertical deflection drive unit 1 rises above a predetermined temperature while being connected to the rear end of the dummyster THR2 having a relatively small resistance value. And a power supply circuit according to the detection signal from the level detection circuit 2 and a level detecting circuit 2 for detecting that the drive output from the vertical deflection driving section 1 is below a predetermined level. Overheating protection device of the television receiver, characterized in comprising a microprocessor configured to (3) for controlling so that the on and off operations of the unit (4). ※ 참고사항 : 최초출원 내용에 의하여 공개하는 것임.※ Note: The disclosure is based on the initial application.
KR1019930023037A 1993-11-01 1993-11-01 Device for protecting overheat of television receiver KR970003430B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR1019930023037A KR970003430B1 (en) 1993-11-01 1993-11-01 Device for protecting overheat of television receiver

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1019930023037A KR970003430B1 (en) 1993-11-01 1993-11-01 Device for protecting overheat of television receiver

Publications (2)

Publication Number Publication Date
KR950016207A true KR950016207A (en) 1995-06-17
KR970003430B1 KR970003430B1 (en) 1997-03-18

Family

ID=19367139

Family Applications (1)

Application Number Title Priority Date Filing Date
KR1019930023037A KR970003430B1 (en) 1993-11-01 1993-11-01 Device for protecting overheat of television receiver

Country Status (1)

Country Link
KR (1) KR970003430B1 (en)

Also Published As

Publication number Publication date
KR970003430B1 (en) 1997-03-18

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