KR890000283Y1 - Protective circuit of excessive current - Google Patents

Protective circuit of excessive current Download PDF

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Publication number
KR890000283Y1
KR890000283Y1 KR2019850014334U KR850014334U KR890000283Y1 KR 890000283 Y1 KR890000283 Y1 KR 890000283Y1 KR 2019850014334 U KR2019850014334 U KR 2019850014334U KR 850014334 U KR850014334 U KR 850014334U KR 890000283 Y1 KR890000283 Y1 KR 890000283Y1
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KR
South Korea
Prior art keywords
outdoor unit
circuit
constant voltage
transistor
overcurrent
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Application number
KR2019850014334U
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Korean (ko)
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KR870007469U (en
Inventor
김철진
Original Assignee
삼성전자 주식회사
정재은
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Priority to KR2019850014334U priority Critical patent/KR890000283Y1/en
Publication of KR870007469U publication Critical patent/KR870007469U/en
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Publication of KR890000283Y1 publication Critical patent/KR890000283Y1/en

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    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
    • H02H3/00—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection
    • H02H3/08—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection responsive to excess current
    • H02H3/087—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection responsive to excess current for dc applications
    • 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
    • H02M1/0045—Converters combining the concepts of switch-mode regulation and linear regulation, e.g. linear pre-regulator to switching converter, linear and switching converter in parallel, same converter or same transistor operating either in linear or switching mode

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  • Dc-Dc Converters (AREA)

Abstract

내용 없음.No content.

Description

옥외 유니트용 과전류 보호회로Overcurrent Protection Circuit for Outdoor Unit

첨부된 도면은 본 고안의 회로도이다.The accompanying drawings are circuit diagrams of the subject innovation.

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

T : 트랜스포머 A : 정류부T: Transformer A: Rectifier

B : 정전압회로 콘트롤부 C : 정전압 회로B: constant voltage circuit control unit C: constant voltage circuit

D´: 과전류 보호회로 E : 옥외 유니트D´: overcurrent protection circuit E: outdoor unit

Q₁-Q5: 트랜지스터 D₁: 다이오드Q₁-Q 5 : Transistor D₁: Diode

ZD : 제너다이오드 R1-R9: 저항ZD: Zener Diode R 1- R 9 : Resistance

C1, C2: 콘센트C 1 , C 2 : outlet

본 고안은 옥외 유니트용 과전류 보호회로에 관한 것으로서, 특히 옥외 유니트에 인가되는 과전류를 차단할 수 있는 회로에 관한 것이다.The present invention relates to an overcurrent protection circuit for an outdoor unit, and more particularly, to a circuit capable of blocking an overcurrent applied to an outdoor unit.

종래의 위성 수진 장치 시스템은 옥내 유니트와 옥외 유니트로 구분되며, 옥외 유니트의 전원은 옥내 유니트에서 케이블 및 와이어를 통하여 전원이 공급되는데, 케이블과 와이어를 사용자가 연결하는 과정에서 전원이 쇼트가 되거나 또는 우천시등에 방수가 잘 되지 않아서 전원 퓨우즈가 단선이 되는 문제가 있었다.Conventional satellite oscillation system is divided into indoor unit and outdoor unit, the power of the outdoor unit is supplied through the cable and wire in the indoor unit, the power is shorted in the process of connecting the cable and wire by the user or There was a problem that the power fuse is disconnected because it is not waterproof well in rainy weather.

따라서 본 고안의 목적은, 상기와 같은 원인에 의해 옥외 유니트에 과전류가 발생하였을 경우 퓨우즈 단선을 방지할 수 있는 회로를 제공하는데 있다.Accordingly, an object of the present invention is to provide a circuit capable of preventing fuse disconnection when an overcurrent occurs in an outdoor unit due to the above causes.

이하 첨부된 도면에 의거 본 고안의 실시예를 상세히 설명하면 다음과 같다.Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings.

트랜스포머(T)를 거친 AC전원이 다이오드 및 콘덴서로 구성된 정류부(A) 출력이 저항(R1-R5), 트랜지스터(Q1,Q2)로 구성된 정전압 회로 콘트롤부(B)의 입력단에 연결되도록 하고, 상기 정전압 회로 콘트롤부(B)의 출력단은 정전압회로(C)에 연결시킨다. 한편 정전압회로(C)의 출력이 옥외 유니트(E) 연결되로록 하며, 상기 정전압회로(C)와 옥외 유니트(E) 사이에 옥외 유니트(E) 선로에서 발생하는 과전류를 차단할 수 있도록 콘덴서(C1, C2), 저항(R6-R9), 다이오드(D1), 재너다이오드(ZD), 트랜지스터(Q3-Q5)로 구성된 과전압 보호회로를 연결하여 구성한다.The AC power supply through the transformer (T) is connected to the input of the rectifier circuit (B) consisting of resistors (R 1- R 5 ) and transistors (Q 1 , Q 2 ). The output terminal of the constant voltage circuit controller B is connected to the constant voltage circuit C. On the other hand, the output of the constant voltage circuit (C) is to be connected to the outdoor unit (E), and the condenser (B) to block the overcurrent generated in the outdoor unit (E) line between the constant voltage circuit (C) and the outdoor unit (E). C 1 , C 2 ), resistors (R 6 -R 9 ), diodes (D 1 ), zener diodes (ZD), and transistors (Q 3 -Q 5 ) is configured by connecting the overvoltage protection circuit.

이와 같은 구성에서 AC전원이 트랜스포머(T), 정류부(A)를 거친 정류전압이 저항(R3),(R4),(R5)을 차례로 통하여 트랜지스터(Q2)의 베이스단자에 인가되면, 상기 트랜지스터(Q2)는 "온"이 된다. 따라서 저항(R1)을 통한 정류전압이 저항(R2) 및 트랜지스터(Q2)를 통하여 접지되므로 트랜지스터(Q1)가 "온"된다. 상기와 같이 작용한 정전압회로 콘트롤부(B)의 출력이 정전회로(C)를 거쳐 일정한 전압이 출력되어(R9)을 통하여 옥의 유니트(E)에 전압이 공급된다. 그런데 만약 옥외 유니트에 이상이 발생하여 과전류가 흐르게 되면 상기 저항(R9)에 의해서 전압강화가 많이 생기므로 트랜지스터(Q5)는 "온"된다. 따라서 정전회로(C)에서 출력된 일정한 전압이 콘덴서(C1), 트랜지스터(Q5), 저항(R8)을 거쳐 트랜지스터(Q4)의 베이스단자에 인가되므로 트랜지스터(Q4)가 "온"된다. 따라서, 저항(R3)을 통한정류전압이 저항(R6), 트랜지스터(Q4), 재너다이오드(ZD)를 거쳐 접지되므로 트랜지스터(Q3)가 "온"된다. 상기와 같이 저항(R3)을 통한 정류 전압이 접지되므로 트랜지스터(Q2,Q1)이 차단되므로 결국 정전압회로(C)의 입력에는 전원이 공급되지 않아 AC전원이 차단될 때까지 상기와 같은 작용을 계속한다.In this configuration, when AC power is supplied to the base terminal of the transistor Q 2 through the transformer T and the rectifying unit A, the rectified voltage is sequentially applied through the resistors R 3 , R 4 , and R 5 . The transistor Q 2 is turned on. Therefore, transistor Q 1 is "on" since the rectified voltage through resistor R 1 is grounded through resistor R 2 and transistor Q 2 . A constant voltage is output through the electrostatic circuit C through the output of the constant voltage circuit controller B acting as described above, and a voltage is supplied to the unit E of the jade through R 9 . However, if an abnormality occurs in the outdoor unit and an overcurrent flows, the voltage Q is increased by the resistor R 9 , and thus the transistor Q 5 is turned on. Accordingly, since the constant voltage output from the electrostatic circuit C is applied to the base terminal of the transistor Q 4 through the capacitor C 1 , the transistor Q 5 , and the resistor R 8 , the transistor Q 4 is turned on. "do. Thus, the transistor Q 3 is "on" since the rectified voltage through the resistor R 3 is grounded via the resistor R 6 , the transistor Q 4 , and the zener diode ZD. As described above, since the rectified voltage through the resistor R 3 is grounded, the transistors Q 2 and Q 1 are cut off, and thus, power is not supplied to the input of the constant voltage circuit C until the AC power is cut off. Continue to work.

상술한 바와같이 본 고안에 의하면 과전류 방지회로(D)를 이용하여 옥외 유니트에 고급되는 과전류를 차단시키므로서 옥외 유니트의 고장 즉 퓨우즈 단선이 방지되는 이점이 있다.As described above, according to the present invention, there is an advantage that the breakdown of the outdoor unit, that is, the fuse disconnection, is prevented by blocking the overcurrent advanced to the outdoor unit by using the overcurrent prevention circuit D.

Claims (1)

AC전원으로부터 트랜스포머(T), 정류부(A), 정전압회로 콘트롤부(B) 및 정전압회로(C)를 거쳐 발생된 일정한 출력전압이 옥외 유니트(E)에 전달되는 옥외 유니트 전원회로에 있어서, 상기 정전압회로(C)와 옥외 유니트(E)사이에 옥외 유니트에 발생되는 과전류를 차단하도록 저항(R7-R9), 콘덴서(C1,C2), 트랜지스터(Q3-Q5), 재너다이오드(ZD), 다이오드(D1)로 구성된 과전류 보호회로(D)를 연결시켜서 구성하는 것을 특징으로 하는 옥외 유니트용 과전류 보호회로.In an outdoor unit power circuit in which a constant output voltage generated from an AC power source through a transformer (T), a rectifying unit (A), a constant voltage circuit control unit (B), and a constant voltage circuit (C) is transmitted to the outdoor unit (E). Resistor (R 7- R 9 ), capacitor (C 1 , C 2 ), transistor (Q 3 -Q 5 ), jammer to cut off the overcurrent generated in the outdoor unit between the constant voltage circuit (C) and the outdoor unit (E). An overcurrent protection circuit for an outdoor unit, characterized by comprising an overcurrent protection circuit (D) consisting of a diode (ZD) and a diode (D 1 ).
KR2019850014334U 1985-10-30 1985-10-30 Protective circuit of excessive current KR890000283Y1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR2019850014334U KR890000283Y1 (en) 1985-10-30 1985-10-30 Protective circuit of excessive current

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR2019850014334U KR890000283Y1 (en) 1985-10-30 1985-10-30 Protective circuit of excessive current

Publications (2)

Publication Number Publication Date
KR870007469U KR870007469U (en) 1987-05-13
KR890000283Y1 true KR890000283Y1 (en) 1989-03-08

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Application Number Title Priority Date Filing Date
KR2019850014334U KR890000283Y1 (en) 1985-10-30 1985-10-30 Protective circuit of excessive current

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KR870007469U (en) 1987-05-13

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