KR970073047A - Power control device - Google Patents

Power control device Download PDF

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Publication number
KR970073047A
KR970073047A KR1019960014018A KR19960014018A KR970073047A KR 970073047 A KR970073047 A KR 970073047A KR 1019960014018 A KR1019960014018 A KR 1019960014018A KR 19960014018 A KR19960014018 A KR 19960014018A KR 970073047 A KR970073047 A KR 970073047A
Authority
KR
South Korea
Prior art keywords
transformer
voltage
transistor
power supply
control device
Prior art date
Application number
KR1019960014018A
Other languages
Korean (ko)
Other versions
KR100187489B1 (en
Inventor
박상열
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 KR1019960014018A priority Critical patent/KR100187489B1/en
Publication of KR970073047A publication Critical patent/KR970073047A/en
Application granted granted Critical
Publication of KR100187489B1 publication Critical patent/KR100187489B1/en

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Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N5/00—Details of television systems
    • H04N5/63—Generation or supply of power specially adapted for television receivers
    • 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

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Details Of Television Scanning (AREA)
  • Dc-Dc Converters (AREA)
  • Television Receiver Circuits (AREA)

Abstract

본 발명은 텔레비젼 수상기의 구동전원을 공급하는 전원 제어장치에 관한 것으로서, 종래의 전원 제어장치는 트랜스의 동작을 제어하는 트랜지스터의 스위칭 타이밍이 텔레비젼 수상기의 수평동기신호 무관하게 이루어짐으로 트랜지스터의 스위칭 동작시 발생하는 스위칭 노이즈 간섭에 의해 안정된 전원공급이 이루어지지 않는 문제점이 있었다.BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a power supply control device for supplying driving power to a television receiver, and in a conventional power supply control device, a switching timing of a transistor for controlling the operation of a transformer is independent of a horizontal synchronizing signal of the television receiver, There is a problem that stable power supply can not be provided due to the generated switching noise interference.

따라서, 상기 문제점을 해결하기 위한 본 발명은 일반의 트랜스로 전원회로를 구성하고, 트랜스의 1차 코일에 유기된 전압을 플라이백 트랜스로 공급하는 트랜지스터의 스위칭 타이밍을 수평동기신호에 동기시킴으로서, 플라이백 트랜스로 안정된 전압을 공급함과 동시에 트랜지스터의 스위칭동작에 의한 노이즈 간섭이 감소되록한 전원 제어장치이다.In order to solve the above problems, according to the present invention, a power supply circuit is constituted by a common transformer, and a switching timing of a transistor supplying a voltage induced in a primary coil of a transformer to a flyback transformer is synchronized with a horizontal synchronous signal, This is a power supply control device that supplies a stable voltage to the back transformer and reduces noise interference due to the switching operation of the transistor.

Description

전원제어장치Power control device

본 내용은 요부공개 건이므로 전문내용을 수록하지 않았음Since this is a trivial issue, I did not include the contents of the text.

제1도는 종래의 전원 제어장치를 보인 회로도, 제2도는 종래 전원 제어장치에 적용된 트랜스의 코일에 유기되는 전압을 보인 파형도, 제3도는 본 발명의 전원 제어장치를 보인 회로도, 제4도는 본 발명의 전원 제어장치에 적용된 트랜지스터의 온동작 타이밍을 보인 파형도.FIG. 1 is a circuit diagram showing a conventional power supply control device, FIG. 2 is a waveform diagram showing a voltage induced in a coil of a transformer applied to a conventional power supply control device, FIG. 3 is a circuit diagram showing the power supply control device of the present invention, Fig. 7 is a waveform diagram showing the on-operation timing of a transistor applied to the power control device of the invention. Fig.

Claims (2)

1차 코일(L11)에 입력된 전압에 비례하는 전안을 2차 코일(L12)에 유기시켜 출력하는 트랜스(T11)와, 온/오프 스위칭 동작하여 상기 트랜스(T11)의 1차 코일(L11)에 인가된 전압을 통과 시키는 트랜지스터(Q11)와, 상기 트랜지스터(Q11)의 출력 전압으로 충방전하여 플라이백 트랜스에 일정전압을 공급하는 콘덴서(C11)와, 상기 트랜지스터(Q11)의 스위칭 타이밍 및 시간을 제어하는 제어부(12)와, 상기 트랜스(T11)의 2차 코일(L12)에서 출력된 전압을 일정 전압으로 고정하여 저전압을 구동 전원으로 사용하는 각 구성요소에 공급하는 정전압부(13)로 구성된 것을 특징으로하는 전원 제어장치.A transformer T11 for generating and outputting a current proportional to a voltage input to the primary coil L11 to the secondary coil L12 and a primary coil L11 of the transformer T11 by on / A capacitor C11 which charges and discharges the output voltage of the transistor Q11 to supply a constant voltage to the flyback transformer; A constant voltage unit 13 for fixing the voltage output from the secondary coil L12 of the transformer T11 to a constant voltage and supplying the voltage to each component using the low voltage as a driving power source, And the power supply control device. 제1항 있어서, 상기 트랜지스터(Q11)에서 출력되는 전압을 감지하는 저항(R11)과, 플라이백 트랜스(FBT)의 출력단에서 수평동기를 검출하는 동기 검출부(11)를 더 포함하여 구성하고, 상기 제어부(12)는 상기 동기 검출부(11)에서 검출된 수평동기에 동기시켜 트랜지스터(Q11)의 스위칭 타이밍을 제어하고, 상기 저항(R11)에서 감지된 전압에 따라 트랜지스터(Q11)의 스위칭 시간을 제어하여 콘덴서(C11)에 항상 일정한 전압이 공급되도록 하는 것을 특징으로 하는 것을 특징으로 하는 전원 제어장치.The apparatus of claim 1, further comprising: a resistor R11 for sensing a voltage output from the transistor Q11; and a synchronization detector 11 for detecting horizontal synchronization at an output terminal of the flyback transformer FBT. The control unit 12 controls the switching timing of the transistor Q11 in synchronization with the horizontal synchronization detected by the synchronization detecting unit 11 and controls the switching time of the transistor Q11 according to the voltage sensed by the resistor R11 So that a constant voltage is always supplied to the capacitor (C11). ※ 참고사항 : 최초출원 내용에 의하여 공개하는 것임.※ Note: It is disclosed by the contents of the first application.
KR1019960014018A 1996-04-30 1996-04-30 Apparatus for controlling power in television KR100187489B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR1019960014018A KR100187489B1 (en) 1996-04-30 1996-04-30 Apparatus for controlling power in television

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1019960014018A KR100187489B1 (en) 1996-04-30 1996-04-30 Apparatus for controlling power in television

Publications (2)

Publication Number Publication Date
KR970073047A true KR970073047A (en) 1997-11-07
KR100187489B1 KR100187489B1 (en) 1999-05-01

Family

ID=19457450

Family Applications (1)

Application Number Title Priority Date Filing Date
KR1019960014018A KR100187489B1 (en) 1996-04-30 1996-04-30 Apparatus for controlling power in television

Country Status (1)

Country Link
KR (1) KR100187489B1 (en)

Also Published As

Publication number Publication date
KR100187489B1 (en) 1999-05-01

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