KR840001565Y1 - Power circuit - Google Patents

Power circuit Download PDF

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Publication number
KR840001565Y1
KR840001565Y1 KR2019820009431U KR820009431U KR840001565Y1 KR 840001565 Y1 KR840001565 Y1 KR 840001565Y1 KR 2019820009431 U KR2019820009431 U KR 2019820009431U KR 820009431 U KR820009431 U KR 820009431U KR 840001565 Y1 KR840001565 Y1 KR 840001565Y1
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KR
South Korea
Prior art keywords
circuit
relay
voltage
turned
power supply
Prior art date
Application number
KR2019820009431U
Other languages
Korean (ko)
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KR840003480U (en
Inventor
이재철
Original Assignee
삼성전자공업주식회사
강진구
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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Application filed by 삼성전자공업주식회사, 강진구 filed Critical 삼성전자공업주식회사
Priority to KR2019820009431U priority Critical patent/KR840001565Y1/en
Publication of KR840003480U publication Critical patent/KR840003480U/en
Application granted granted Critical
Publication of KR840001565Y1 publication Critical patent/KR840001565Y1/en

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Classifications

    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
    • H02M7/00—Conversion of ac power input into dc power output; Conversion of dc power input into ac power output
    • H02M7/02—Conversion of ac power input into dc power output without possibility of reversal
    • H02M7/04—Conversion of ac power input into dc power output without possibility of reversal by static converters
    • H02M7/12—Conversion of ac power input into dc power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode
    • H02M7/21—Conversion of ac power input into dc power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
    • H02M1/00—Details of apparatus for conversion
    • H02M1/10—Arrangements incorporating converting means for enabling loads to be operated at will from different kinds of power supplies, e.g. from ac or dc

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Dc-Dc Converters (AREA)

Abstract

내용 없음.No content.

Description

자동 절환 전원회로Automatic Switching Power Circuit

첨부된 도면은 본 고안의 회로도.The accompanying drawings are circuit diagrams of the present invention.

본 고안은 자동절환 전원회로에 관한 것으로 임의의 입력전압 변동에 따른 전자기기를 보호하기 위한 것이다.The present invention relates to an automatic switching power supply circuit for protecting an electronic device according to any input voltage variation.

종래의 전자기기에는 대부분 100V / 200V의 절환 스위치가 달려있어 입력전압에 따라 소비자가 이를 바꿔가며 전자 기기를 사용하고 있기 때문에 부주의한 경우나 예기치 못한 입력전압의 변동이 입는 경우 갔비싼 전자제품을 파손하는 경우가 많았다.Most of the conventional electronic devices are equipped with a 100V / 200V changeover switch, and consumers change them according to the input voltage and use electronic devices, thus damaging expensive electronic products in case of inadvertent or unexpected fluctuations in the input voltage. There were many cases.

본 고안은 이러한 결절을 방지하기 위한 것이며, 또한, 종래에도 이러한 목적으로 제안된 자동절환 회로가 있었으나 비용적으로 너무 고가인데다가 회로가 복잡하였던 결점이 있었던 바, 본 고안의 종래 이러한 점을 감안하여 간단한 회로구성으로 경제성있고 신뢰성이 높은 것을 안출한 것이다.The present invention is intended to prevent such a nodule, and also, there has been a conventional automatic switching circuit proposed for this purpose, but there is a drawback that the circuit is too expensive and the circuit is complicated. The simple circuit configuration is economical and reliable.

본 고안을 첨부된 도면에 따라 자세히 설명하면, 먼저 전원트랜스(2) 1차측이 릴레이(1)를 달고, 2차측 C점과 안정회회로(3)의출력단 사이에 다이오드(D1, D2, D3), 트랜지스터(Q1, Q2, Q3, Q4, Q5)저항(R1, R2, R3, R4, R5, R6)로 구성되는 릴레이 구동 회로(4)를 연결 구성함으로써 이루어진 것으로, 이의 동작 과정을 보면 전원 OFF시 릴레이 상태는 A부분에 연결되어 있다가 AC입력이 100V공급되면, C점의 전압이 기준치 전압(제어다이오드(D2)의 전압)보다 적게 되어 트랜지스터(Q3)가 OFF되고, 트랜지스터(Q4)가 ON되면, 다시 저항 (R5, R6)에 의해 트랜지스터 (Q5)가 ON되므로 릴레이(1)가 ON되어 릴레이(1)가 100V단자인 B에 붙게 된다. 따라서 전원 회로는 정상상태가 되고, C점의 전압은 상승되므로 Q3가 ON, Q4가 OFF된다.When the present invention is described in detail according to the accompanying drawings, first, the power supply transformer 2, the primary side is equipped with a relay (1), the secondary side of the C point and the stable circuit (3) Between outputs diodes (D 1 , D 2 , D 3 ), transistors (Q 1 , Q 2 , Q 3 , Q 4 , Q 5 ) resistors (R 1 , R 2 , R 3 , R 4 , R 5 , R It is made by connecting the relay driving circuit (4) consisting of 6 ). When the power is turned off, the relay state is connected to the A part and when the AC input is supplied to 100V, the voltage at the point C is the reference voltage. (control diode voltage (D 2)) is less than the transistor (Q 3) OFF, when the transistor (Q 4) oN, so again a resistance (R 5, R 6) is a transistor (Q 5) oN by Relay 1 is turned on and relay 1 is attached to B which is a 100V terminal. Therefore, the power supply circuit is in a normal state, and the voltage at point C is raised, so Q 3 is ON and Q 4 is OFF.

그러나 D점의 전위가 이전에 0전위 이므로 트랜지스터(Q1)이 OFF, 트랜지스터(Q2)가 ON되어 트랜지스터(Q5)는 계속해서 현상태로 ON이 계속된다.However, since the potential at the point D was previously at zero potential, the transistor Q 1 is turned off, the transistor Q 2 is turned on, and the transistor Q 5 continues to be turned on as it is.

한편 릴레이(1)상태가 A부분에 있을때 AC입력이 220V가 공급되면, C점의 전압이 기준치 이상이 되므로 Q3가 ON, Q4가 OFF되며, 따라서, D점의 전위가 +전위가 되므로 Q1이 ON, Q2가 OFF, 즉 Q2와 Q4가 동시에 OFF이므로 Q5역시 OFF가 되어 릴레이(1)는 현상태 즉 A부분에 계속 연결상태에 있게 된다.On the other hand, if the AC input is supplied with 220V when the relay (1) is in the A part, since the voltage at point C becomes higher than the reference value, Q 3 is turned on and Q 4 is turned off. Therefore, the potential at point D becomes + potential. Since Q 1 is ON and Q 2 is OFF, that is, Q 2 and Q 4 are OFF at the same time, Q 5 is also OFF and relay 1 remains connected to the current state, that is, part A.

상기와 같이 간단한 회로를 사용하므로써 입력 AC전압이 110V이든 220V이든 자동조절되어, 입력전압 변동에 의한 전자제품의 파손을 방지할 수 있을 뿐만 아니라, 신뢰성을 향상시키고, 제작비를 감소 시킬 수 있는 효과가 있는 것이다.By using a simple circuit as described above, whether the input AC voltage is automatically adjusted to 110V or 220V, it is possible not only to prevent damage of electronic products due to fluctuation of the input voltage, but also to improve reliability and reduce manufacturing costs. It is.

Claims (1)

전원 트랜스(2) 1차측에 릴레이(1)를 첨부하고, 2차측의 일단과 안정화 회로(3)사이에 저항(R1- R6), 다이오드(D1-D3), 트랜지스터(Q1~Q5) 및 콘덴서(C1)로 구성된 릴레이 구동회로(4)를 연결함으로서 이루어진 자동 절환 전원회로.The relay 1 is attached to the primary side of the power supply transformer 2, and between the one end of the secondary side and the stabilization circuit 3, resistors R 1 -R 6 , diodes D 1- D 3 , and transistors Q 1. Automatic switching power supply circuit made by connecting a relay drive circuit (4) consisting of ~ Q 5 ) and a capacitor (C 1 ).
KR2019820009431U 1982-11-26 1982-11-26 Power circuit KR840001565Y1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR2019820009431U KR840001565Y1 (en) 1982-11-26 1982-11-26 Power circuit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR2019820009431U KR840001565Y1 (en) 1982-11-26 1982-11-26 Power circuit

Publications (2)

Publication Number Publication Date
KR840003480U KR840003480U (en) 1984-07-25
KR840001565Y1 true KR840001565Y1 (en) 1984-08-20

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Family Applications (1)

Application Number Title Priority Date Filing Date
KR2019820009431U KR840001565Y1 (en) 1982-11-26 1982-11-26 Power circuit

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KR (1) KR840001565Y1 (en)

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Publication number Publication date
KR840003480U (en) 1984-07-25

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