KR960006484A - AC / DC automatic switching circuit of AC / DC combined television - Google Patents

AC / DC automatic switching circuit of AC / DC combined television Download PDF

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Publication number
KR960006484A
KR960006484A KR1019940018848A KR19940018848A KR960006484A KR 960006484 A KR960006484 A KR 960006484A KR 1019940018848 A KR1019940018848 A KR 1019940018848A KR 19940018848 A KR19940018848 A KR 19940018848A KR 960006484 A KR960006484 A KR 960006484A
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KR
South Korea
Prior art keywords
power
power supply
switching
television
unit
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KR1019940018848A
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Korean (ko)
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KR0141327B1 (en
Inventor
문재훈
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배순훈
대우전자 주식회사
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Priority to KR1019940018848A priority Critical patent/KR0141327B1/en
Publication of KR960006484A publication Critical patent/KR960006484A/en
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Publication of KR0141327B1 publication Critical patent/KR0141327B1/en

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    • 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
    • H03—ELECTRONIC CIRCUITRY
    • H03K—PULSE TECHNIQUE
    • H03K17/00—Electronic switching or gating, i.e. not by contact-making and –breaking
    • H03K17/002—Switching arrangements with several input- or output terminals

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  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Television Receiver Circuits (AREA)

Abstract

본 발명은 AC/DC 겸용의 텔레비젼에 AC입력단 및 DC입력단을 설치하여 택일적인 전원입력이 가능하도록 하면서 AC 및 DC전원이 동시에 입력되는 경우 어느 한 전원으로의 절환이 자동으로 이루어지도록 된 AC/DC겸용 텔레비젼의 AC/DC 자동절환회로를 제공하기 위한 것이다. 이를 위해 본 발명은, 텔레비젼 전원부(10)로부터의 소정 전원을 동작전원으로 사용하는 AC/DC 겸용의 텔레비젼에서, AC입력단으로부터 상기 텔레비젼 전원부(10)로 입력되는 AC전원을 검출하는 AC전원검출부(20)와, 상기 AC전원검출부(20)에서의 AC전원검출여부에 따라 DC입력단으로부터 상기 텔레비젼 전원부(10)로 인가되는 DC전원의 입력여부를 결정짓는 DC전원스위칭구동부(30) 및, 상기 DC전원스위칭구동부(30)로부터 구동신호를 기초로 스위칭동작하면서 상기 DC입력단으로부터의 DC전원을 상기 텔레비젼 전원부(10)로 입력시키는 DC전원스위칭부(40)를 추가로 구비하여 구성된 것을 특징으로 한다.According to the present invention, AC and DC are automatically switched to any power source when AC and DC power are simultaneously inputted by installing an AC input terminal and a DC input terminal on an AC / DC combined television. It is to provide the AC / DC automatic switching circuit of a combined television. To this end, the present invention provides an AC power supply detecting unit for detecting AC power input from the AC input terminal to the television power supply unit 10 in an AC / DC combined television that uses a predetermined power supply from the television power supply unit 10 as an operating power source. 20), and a DC power switching driver 30 for determining whether or not the DC power applied to the television power supply 10 is input from the DC input terminal according to whether or not the AC power detection unit 20 detects the AC power. It is characterized in that it further comprises a DC power switching unit 40 for inputting the DC power from the DC input terminal to the television power supply unit 10 while switching operation based on the drive signal from the power supply switching unit 30.

Description

AC/DC 겸용 텔레비젼의 AC/DC 자동절환회로AC / DC automatic switching circuit of AC / DC combined TV

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

Claims (7)

텔레비젼 전원부(10)로부터의 소정 전원을 동작전원으로 사용하는 AC/DC 겸용의 텔레비젼의 있어서, AC입력단으로부터 상기 텔레비젼 전원부(10)로 입력되는 AC전원을 검출하는 AC전원검출부(20)와, 상기 AC전원검출부(20)에서의 AC전원검출여부에 따라 DC입력단으로부터 상기 텔레비젼 전원부(10)로 인가되는 DC전원의 입력여부를 결정짓는 DC전원스위칭구동부(30) 및 상기 DC전원스위칭구동부(30)로부터 구동신호를 기초로 스위칭동작하면서 상기 DC입력단으로부터의 DC전원을 상기 텔레비젼 전원부(10)로 입력시키는 DC전원스위칭부(40)를 추가로 구비하여 구성된 것을 특징으로 하는 AC/DC 겸용 텔레비젼의 AC/DC 자동절환회로.An AC / DC combined television using a predetermined power source from the television power supply unit 10 as an operating power source, the AC power supply detecting unit 20 detecting an AC power input from the AC input terminal to the television power supply unit 10, and DC power switching driving unit 30 and the DC power switching driving unit 30 which determine whether or not the input of the DC power applied to the television power supply unit 10 from the DC input terminal according to whether or not the AC power detection unit 20 detects the AC power supply. And a DC power switching unit 40 for inputting DC power from the DC input terminal to the television power supply unit 10 while switching on the basis of a drive signal from the AC / DC combined television. / DC automatic switching circuit. 제1항에 있어서, 상기 AC전원검출부(20)는 정류소자(D2,C1)에 의해 정류되고 정격전압소자(ZD1)를 통한 상기 AC입력단으로부터의 AC전원의 유무에 따라 DC전원입력여부를 결정짓도록 온/오프스위칭되는 제1스위칭트랜지스터(Q1)로 구성된 것을 특징으로 하는 AC/DC 겸용 텔레비젼의 AC/DC 자동절환회로.The method of claim 1, wherein the AC power detecting unit 20 is rectified by the rectifying elements (D2, C1) and determines whether the DC power input based on the presence or absence of AC power from the AC input terminal through the rated voltage element (ZD1). An AC / DC automatic switching circuit for an AC / DC combined television comprising a first switching transistor (Q1) that is turned on and off to be built. 제1항 또는 제2항에 있어서, 상기 DC전원스위칭부구동부(30)는 상기 제1스위칭트랜지스터(Q1)와 대응되게 스위칭동작하면서 DC전원경로를 제어하는 제2스위칭트랜지스터(Q2)로 구성된 것을 특징으로 하는 AC/DC 겸용 텔레비젼의 AC/DC 자동절환회로.According to claim 1 or claim 2, wherein the DC power supply switching unit driving portion 30 is composed of a second switching transistor (Q2) for controlling the DC power path while switching operation corresponding to the first switching transistor (Q1). AC / DC automatic switching circuit of the combined use of the AC / DC television. 제1항 또는 제3항에 있어서, 상기 DC전원스위칭부(40)는 상기 제2스위칭트랜지스터(Q2)의 온/오프상태를 기초로 DC전원경로를 제어하는 제2스위칭트랜지스터(Q2)로 구성된 것을 특징으로 하는 AC/DC 겸용 텔레비젼의 AC/DC 자동절환회로.4. The DC power supply switching unit 40 of claim 1, wherein the DC power supply switching unit 40 includes a second switching transistor Q2 that controls the DC power path based on the on / off state of the second switching transistor Q2. AC / DC automatic switching circuit of the AC / DC combined TV, characterized in that. 텔레비전 전원부(10)로부터의 소정 전원을 동작전원으로 사용하는 AC/DC 겸용의 텔레비젼의 있어서, AC입력단 및 DC입력단으로부터 동시에 상기 텔레비젼 전원부(10)로 AC 및 DC전원이 입력되는 경우 AC로의 자동절환이 이루어지도록 하는 전원절환부(50)를 추가로 구비하여 구성된 것을 특징으로 하는 AC/DC 겸용 텔레비젼의 AC/DC 자동절환회로.In an AC / DC combined television using a predetermined power supply from the television power supply unit 10 as an operating power source, when AC and DC power are simultaneously input to the television power supply unit 10 from an AC input terminal and a DC input terminal, automatic switching to AC is performed. An AC / DC automatic switching circuit of an AC / DC combined television, further comprising: a power switching unit 50 configured to accomplish this. 제5항에 있어서, 상기 전원절환부(50)는 상기 AC입력단에서 상기 텔레비젼 전원부(10)로의 AC전원인가 여부에 따라 온/오프스위칭되는 제1스위칭소자(50a)와, 상기 제1스위칭소자(50a)가 온됨에 따라 DC입력단과 상기 텔레비젼 전원부(10)사이에서 접속상태를 유지하고 있는 DC전원스위칭부(40)를 접속해제시키는 스위칭 트랜지스터(Q3)로 구성된 것을 특징으로 하는 AC/DC 겸용 텔레비젼의 AC/DC 자동절환회로.6. The power supply switching unit (50) according to claim 5, wherein the power switching unit (50) is on / off-switched according to whether AC power is supplied from the AC input terminal to the television power supply unit (10), and the first switching element. AC / DC combined use, characterized in that the switching transistor (Q3) for disconnecting the DC power supply switching unit 40 is maintained between the DC input terminal and the television power supply unit 10 as 50a is turned on. TV's AC / DC automatic switching circuit. 제6항에 있어서, 상기 제1스위칭소자(50a)는 포토커플러로 구성된 것을 특징으로 하는 AC/DC 겸용 텔레비젼의 AC/DC 자동절환회로.7. The AC / DC automatic switching circuit according to claim 6, wherein the first switching element (50a) is composed of a photocoupler. ※ 참고사항 : 최초출원 내용에 의하여 공개하는 것임.※ Note: The disclosure is based on the initial application.
KR1019940018848A 1994-07-30 1994-07-30 Ac/dc automatic converting circuits KR0141327B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR1019940018848A KR0141327B1 (en) 1994-07-30 1994-07-30 Ac/dc automatic converting circuits

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1019940018848A KR0141327B1 (en) 1994-07-30 1994-07-30 Ac/dc automatic converting circuits

Publications (2)

Publication Number Publication Date
KR960006484A true KR960006484A (en) 1996-02-23
KR0141327B1 KR0141327B1 (en) 1998-06-15

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KR1019940018848A KR0141327B1 (en) 1994-07-30 1994-07-30 Ac/dc automatic converting circuits

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KR0141327B1 (en) 1998-06-15

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