KR970022710A - Monitor power circuit - Google Patents

Monitor power circuit Download PDF

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Publication number
KR970022710A
KR970022710A KR1019950036216A KR19950036216A KR970022710A KR 970022710 A KR970022710 A KR 970022710A KR 1019950036216 A KR1019950036216 A KR 1019950036216A KR 19950036216 A KR19950036216 A KR 19950036216A KR 970022710 A KR970022710 A KR 970022710A
Authority
KR
South Korea
Prior art keywords
power supply
resistor
unit
supply circuit
light emitting
Prior art date
Application number
KR1019950036216A
Other languages
Korean (ko)
Other versions
KR100195704B1 (en
Inventor
황기봉
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.)
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Publication date
Application filed by 배순훈, 대우전자 주식회사 filed Critical 배순훈
Priority to KR1019950036216A priority Critical patent/KR100195704B1/en
Publication of KR970022710A publication Critical patent/KR970022710A/en
Application granted granted Critical
Publication of KR100195704B1 publication Critical patent/KR100195704B1/en

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Classifications

    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G1/00—Control arrangements or circuits, of interest only in connection with cathode-ray tube indicators; General aspects or details, e.g. selection emphasis on particular characters, dashed line or dotted line generation; Preprocessing of data
    • G09G1/005—Power supply circuits
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F1/00—Details not covered by groups G06F3/00 - G06F13/00 and G06F21/00
    • G06F1/26—Power supply means, e.g. regulation thereof
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G2330/00—Aspects of power supply; Aspects of display protection and defect management
    • G09G2330/02—Details of power systems and of start or stop of display operation
    • G09G2330/021—Power management, e.g. power saving

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  • Engineering & Computer Science (AREA)
  • Theoretical Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Radar, Positioning & Navigation (AREA)
  • Remote Sensing (AREA)
  • Computer Hardware Design (AREA)
  • General Engineering & Computer Science (AREA)
  • Dc-Dc Converters (AREA)

Abstract

본 발명은 모니터의 전원 회로에 관한 것으로서, 본 발명의 전원 회로는 전원 1차측에 2차측으로부터의 발광 신호를 수신하여 피드백 신호를 출력하는 수광부와 상기 피드백 신호를 입력받아 스위칭 트랜지스터의 “온”시간을 제어하는 전원 제어부가 구비된 모니터의 전원 회로에 있어서, 전원 2차측 출력단으로부터의 출력 전압을 분배하는 전압 분배부(40)와 ; 상기 분배된 전압에 따라 온/오프되는 스위칭부(42) ; 전류량에 비례하는 신호를 상기 1차측의 수광부로 전달하기 위해 발광하는 발광부(44) ; 및 상기 발광부(44)에 흐르는 전류를 제어하는 전류 제어부(46)로 구성되어 있으며, 상기와 같이 구성되는 본 발명은 제품 단가가 높은 에러 앰프 소자 대신에 다른 저렴한 소자를 이용하여 에러 앰프 기능을 수행한 후 피드백 시킴으로써 정전압을 출력하는 모니터의 전원 회로를 용이하게 구현할 수 있을 뿐만 아니라 비용도 절감시킬 수 있다.BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a power supply circuit of a monitor, wherein the power supply circuit of the present invention receives a light emitting signal from a secondary side and outputs a feedback signal to a primary side of a power supply, and a "on" time of a switching transistor receiving the feedback signal. A power supply circuit of a monitor provided with a power supply control unit for controlling the power supply, the power supply circuit comprising: a voltage divider unit (40) for distributing an output voltage from a power source secondary side output terminal; A switching unit 42 turned on / off according to the divided voltage; A light emitting unit 44 which emits light to transmit a signal proportional to the amount of current to the light receiving unit on the primary side; And a current controller 46 for controlling a current flowing through the light emitting unit 44. The present invention, which is configured as described above, provides an error amplifier function by using another inexpensive device instead of an error amplifier device having a high product cost. By performing feedback after performing, the power supply circuit of the monitor that outputs the constant voltage can be easily implemented and the cost can be reduced.

Description

모니터의 전원 회로Monitor power circuit

본 내용은 요부공개 건이므로 전문내용을 수록하지 않았음As this is a public information case, the full text was not included.

제1도는 종래 모니터의 전원 회로에 대한 부분 회로도.1 is a partial circuit diagram of a power supply circuit of a conventional monitor.

제2도는 본 발명에 따른 모니터의 전원 회로에 대한 회로도.2 is a circuit diagram of a power supply circuit of a monitor according to the present invention.

제3도는 본 발명에 따른 스위칭부의 구성도이다.3 is a configuration diagram of a switching unit according to the present invention.

Claims (5)

전원 1차측에 2차측으로부터의 발광 신호를 수신하여 피드백 신호를 출력하는 수광부와 상기 피드백 신호를 입력받아 트랜지스터의 “온”시간을 제어하는 전원 제어부가 구비된 모니터의 전원 회로에 있어서, 전원 2차측 출력단으로부터의 출력 전압을 분배하는 전압 분배부(40)와 ; 상기 분배된 전압에 따라 온/오프되는 스위칭부(42) ; 전류량에 비례하는 신호를 1차측의 수광부로 전달하기 위해 발광하는 발광부(44) ; 및 상기 발광부(44)에 흐르는 전류를 제어하는 전류 제어부(46)로 구성된 것을 특징으로 하는 모니터의 전원 회로.A power supply secondary circuit of a monitor comprising a light receiving unit receiving a light emission signal from a secondary side and outputting a feedback signal on a power supply primary side, and a power control unit receiving the feedback signal to control a “on” time of a transistor. A voltage divider 40 for distributing the output voltage from the output stage; A switching unit 42 turned on / off according to the divided voltage; A light emitting portion 44 which emits light to transmit a signal proportional to the amount of current to the light receiving portion on the primary side; And a current controller (46) for controlling the current flowing through the light emitting unit (44). 제1항에 있어서, 상기 전압 분배부(40)가 전원 2차측의 출력단에 저항 R21의 한쪽단이 연결되어 있고 저항 R21의 다른 한쪽단이 저항 R22의 한쪽단과 연결되어 있으며 저항 R22의 다른 한쪽단은 접지에 연결된 구조로 되어 있는 것을 특징으로 하는 모니터의 전원 회로.The voltage divider (40) according to claim 1, wherein one end of the resistor (R21) is connected to the output terminal on the secondary side of the power supply, the other end of the resistor (R21) is connected to one end of the resistor (R22), and the other end of the resistor (R22). The power supply circuit of the monitor, characterized in that the structure is connected to the ground. 제1항에 있어서, 상기 스위칭부(42)가 상기 전압 분배부(40)로부터의 분배 전압과 기준 전압을 비교하는 비교기(42-1)와 ; 상기 비교기(42-1)의 출력에 따라 온/오프 동작을 수행하는 트랜지스터(42-2)로 구성된 것을 특징으로 하는 모니터의 전원 회로.2. The apparatus of claim 1, wherein the switching unit (42) comprises: a comparator (42-1) for comparing the divided voltage from the voltage divider unit (40) with a reference voltage; And a transistor (42-2) for performing an on / off operation according to the output of the comparator (42-1). 제1항에 있어서, 상기 발광부(44)가 전류량에 비례하여 발광하는 발광 다이오드로 구현된 것을 특징으로 하는 모니터의 전원 회로.The power supply circuit of a monitor according to claim 1, wherein the light emitting part (44) is implemented as a light emitting diode emitting light in proportion to the amount of current. 제1항에 있어서, 상기 전류 제어부(46)가 저항 R23의 한쪽단과 저항 R25의 한쪽단이 공통으로 상기 발광부(44)에 연결되어 있고 저항 R23의 다른 한쪽단은 상기 스위칭부(42)에 연결되며 저항 R25의 다른 한쪽단은 접지에 연결된 구조로 되어 있는 모니터의 전원 회로.The current controller 46 has one end of the resistor R23 and one end of the resistor R25 connected to the light emitting unit 44 in common, and the other end of the resistor R23 is connected to the switching unit 42. The power supply circuit of the monitor, the other end of resistor R25 being connected to ground. ※ 참고사항 : 최초출원 내용에 의하여 공개하는 것임.※ Note: The disclosure is based on the initial application.
KR1019950036216A 1995-10-19 1995-10-19 A power circuit for a monitor KR100195704B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR1019950036216A KR100195704B1 (en) 1995-10-19 1995-10-19 A power circuit for a monitor

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1019950036216A KR100195704B1 (en) 1995-10-19 1995-10-19 A power circuit for a monitor

Publications (2)

Publication Number Publication Date
KR970022710A true KR970022710A (en) 1997-05-30
KR100195704B1 KR100195704B1 (en) 1999-06-15

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KR1019950036216A KR100195704B1 (en) 1995-10-19 1995-10-19 A power circuit for a monitor

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2022220568A3 (en) * 2021-04-16 2023-01-05 ㈜ 포인트텍 Alternating current direct driver circuit device for uniformity factor of multichannel light emitting diode

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2022220568A3 (en) * 2021-04-16 2023-01-05 ㈜ 포인트텍 Alternating current direct driver circuit device for uniformity factor of multichannel light emitting diode

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Publication number Publication date
KR100195704B1 (en) 1999-06-15

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