KR880001431Y1 - Power circuit - Google Patents

Power circuit Download PDF

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Publication number
KR880001431Y1
KR880001431Y1 KR2019850003096U KR850003096U KR880001431Y1 KR 880001431 Y1 KR880001431 Y1 KR 880001431Y1 KR 2019850003096 U KR2019850003096 U KR 2019850003096U KR 850003096 U KR850003096 U KR 850003096U KR 880001431 Y1 KR880001431 Y1 KR 880001431Y1
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KR
South Korea
Prior art keywords
power
receiver
transistor
regulator
diode
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KR2019850003096U
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Korean (ko)
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KR860012484U (en
Inventor
김철진
Original Assignee
삼성전자 주식회사
정재은
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Priority to KR2019850003096U priority Critical patent/KR880001431Y1/en
Publication of KR860012484U publication Critical patent/KR860012484U/en
Application granted granted Critical
Publication of KR880001431Y1 publication Critical patent/KR880001431Y1/en

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Classifications

    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
    • H02H7/00—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions
    • H02H7/04—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions for transformers
    • 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
    • H02H3/24—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 undervoltage or no-voltage

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Protection Of Static Devices (AREA)

Abstract

내용 없음.No content.

Description

분리용 수신기의 전원 보호회로Power supply protection circuit of disconnecting receiver

본 고안의 회로도.Circuit diagram of the present invention.

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

PT : 파워트랜스 10, 20 : 정류회로PT: power transformer 10, 20: rectifier circuit

30, 40, 50, 60 : 레귤레이터 Q1, Q2: 트랜지스터30, 40, 50, 60: regulator Q 1 , Q 2 : transistor

C1: 콘덴서 D1, D2: 다이오드C 1 : condenser D 1 , D 2 : diode

R1R2, R3: 저항 B1: 수신기와 분리되는 전원R 1 R 2 , R 3 : Resistor B 1 : Power source separate from receiver

R1R2, R4… : 수신기 내부에서 사용되는 직류전원R 1 R 2 , R 4 . : DC power used inside the receiver

본 고안은 유니트가 분리되는 시스템에서 케이블이나 와이어로 연결되어 별도로 전원을 공급시킬 때에 단락(short)되어 생기는 고장을 방지할 수 있게한 분리용 수신기의 전원 보호회로에 관한 것이다.The present invention relates to a power protection circuit of a receiver for separation that can prevent a short circuit (short) when the power supply is separately connected by a cable or a wire in a system in which the unit is separated.

유성수신기와 같은 전자 기기에서는 다운콘버터(Down-Converer)나 저잡음 증폭기에 케이블이나 와이어로 별도로 전원을 공급하도록 되어 있는데 이와 같은 분리용 수신기에 있어서 셋트(set)내의 전원을 연결할 때에 종종 단락현상이 발생되어 레귤레이터가 고장나는 경우가 종종 발생되는 것이었다.In electronic equipment such as voice receivers, power is supplied separately to the down-converter or low noise amplifier by cable or wire. In such a separation receiver, a short circuit occurs when connecting power in a set. Often, regulators failed.

본 고안은 이와 같은 점을 감안하여 분리용 수신기에 별도로 전원을 공급하는 연결회로의 단락현상이 발생할 때에 외부로 인가되는 전원을 자동 차단하여 레귤레이터가 고장나는 것을 방지 할 수 있게한 것으로 파워트랜스를 통하여 인가되는 레귤레이터 사이에 스위칭 트랜지스터 및 다이오드를 연결 구성시켜 단락시에 레귤레이터에 공급되는 전원을 차단할 수 있게 구성시켜 된 것이다.The present invention is designed to prevent the regulator from failing by automatically shutting off the power applied when a short circuit occurs in the connection circuit that separately supplies power to the receiver for separation. The switching transistor and diode are connected between the regulators to be applied to cut off the power supply to the regulator in the event of a short circuit.

이를 첨부 도면에 의하여 상세히 설명하면 다음과 같다.This will be described in detail with reference to the accompanying drawings.

본 고안은 파워트랜스(PT) 2차측에서 정류회로(10)(20)에 전원을 공급하여 정류한 후 레귤레이터(40)(50)(60)를 통하여 수신기 내부에서 사용되는 직류전원(B2)(B3)(B4)을 공급하도록 구성하고 직류회로(10)에서 콘덴서(C1)를 통하여 스위칭 트랜지스터(Q1)와 연결하고 레귤레이터(30)(40)의 출력측에서 분배저항(R2)(R3) 및 다이오드(D1)를 연결하여 에미터측에서 다이오드(D2)를 통하여 접지된 스위칭트랜지스터(Q2)의 베이스측과 연결 구성한 후 저항(R1)을 통하여 트랜지스터(Q1)(Q2)의 베이스와 콜렉터측을 연결 구성시켜 수신기와 분리되는 전원(B1)의 단락시에 트랜지스터(Q1)(Q2)가 차단되도록 구성시켜 된 것이다.The present invention is rectified by supplying power to the rectifier circuit 10, 20 on the secondary side of the power transformer (PT) and then the DC power source (B 2 ) used in the receiver through the regulator 40, 50, 60 It is configured to supply (B 3 ) (B 4 ) and is connected to the switching transistor Q 1 through the capacitor C 1 in the DC circuit 10 and the distribution resistor R 2 at the output side of the regulator 30, 40. (R 3 ) and the diode (D 1 ) are connected to the base side of the switching transistor (Q 2 ) grounded through the diode (D 2 ) on the emitter side, and then the transistor (Q 1 ) through the resistor (R 1 ). The transistor Q 1 and Q 2 are cut off when the power supply B 1 separated from the receiver is connected by connecting the base of the Q 2 and the collector side.

이와 같이 구성된 본 고안에서 트래스(PT)의 2차측에서 정류회로(10)(20)로 공급되어 레귤레이터(40)(50)(60)에서 출력되도록 전원이 수신기 내부에서 사용되는 직류전원(B2)(B3)(B4)으로 공급하게 된다.In the present invention configured as described above, the DC power source B used in the receiver to supply power to the rectifier circuits 10 and 20 from the secondary side of the trace PT and output from the regulators 40, 50 and 60. 2 ) (B 3 ) (B 4 )

그리고 레귤레이터(40)에서 출력되는 전원은 저항(R2)(R3)을 통하여 트랜지스터(Q2)를 구동시키므로 트랜지스터(Q1)의 베이스측은 저전위 상태가 되어 트랜지스터(Q1)가 도통되어서 레귤레이터(30)를 통한 직류전원은 수신기와 분리되는 전원(B1)으로 공급하게 되는 정상 상태가 된다.And the power outputted from the regulator 40 is a resistance (R 2) (R 3) a through transistor side of the base of the transistor (Q 1) because drive (Q 2) is a low potential state be conductive and the transistor (Q 1) DC power through the regulator 30 is a normal state to be supplied to the power (B 1 ) which is separated from the receiver.

여기서 콘덴서 C1는 리플제거용이고 다이오드 D2는 전류제한용이다.Here capacitor C 1 is for ripple cancellation and diode D 2 is for current limiting.

따라서 분리용 수신기에 있어서 외부로 연결되는 와이어나 케이블을 정상적으로 연결시키면 정상적인 전원을 공급할 수 있으나 사용자의 부주의로 인하여 수신기와 분리되는 전원(B1)이 단락되는 경우에는 노우드(A)점이 0전위가 되므로 레귤레이터(40)에서 인가되는 전원은 다이오드(D1)를 통하여 흐르게 되므로 노우드(C)점에는 다이오드(D1)의 양단간의 전압(0.6V)가 인가되므로 트랜지스터(Q2)가 차단되게 되고 트랜지스터(Q2)의 차단에 의하여 트랜지스터(Q1)도 차단되므로 레귤레이터(30)에 전원이 인가되지 않아 파괴되는 것을 방지 할 수가 있는 것이다.Therefore, if wires or cables connected to the external receiver are normally connected, normal power can be supplied, but if the power (B 1 ) separated from the receiver is shorted due to user's carelessness, the nowood point (A) point is zero potential. since the power supplied from the regulator 40 is therefore caused to flow through the diode (D 1) Norwood (C) that is because the diode voltage (0.6V) for both ends of a (D 1) is a transistor (Q 2) is blocked, Since the transistor Q 1 is also blocked by the blocking of the transistor Q 2 , power is not applied to the regulator 30, thereby preventing the transistor 30 from being destroyed.

이상에서와 같이 본 고안은 정류회로(10)와 레귤레이터(30)(40)사이에 정상적인 전원 구동시 구동하는 스위칭 트랜지스터(Q1)(Q2)를 구성하고 단락되는 상태에서 다이오드(D1)를 통하여 흐르는 전원에 의하여 스위칭트랜지스터(Q1)(Q2)가 차단될 수 있게 하여 유니트가 분리되는 시스템에서 수신기와 분리되는 전원 단락시에 레귤레이터를 보호할 수 있는 분리용 수신기의 전원 보호회로를 제공할 수가 있는 것이다.As described above, the present invention constitutes a switching transistor Q 1 (Q 2 ) which is driven during normal power driving between the rectifier circuit 10 and the regulator 30, 40, and the diode D 1 in a short-circuit state. Switching transistor (Q 1 ) (Q 2 ) can be blocked by the power flowing through the power supply circuit of the receiver for the separation receiver to protect the regulator in case of power short separation from the receiver in the system where the unit is separated. It can be provided.

Claims (1)

파워트랜스(PT)2차측의 정류회로(10)(20)에서 각각의 레귤레이터(30)(40)(50)(60)를 통하여 수신기와 분리되는 전원(B1)과 수신기 내부에서 사용되는 직류전원(B2)(B3)(B4)이 각각 분리되는 수신기에 있어서, 정류회로(10)와 레귤레이터(30)사이에 콘덴서(C1)를 통하여 트랜지스터(Q1)와 연결 구성하고 트랜지스터(Q1)의 베이스측에 에미터가 다이오드(D2)을 통하여 접지된 트랜지스터(Q2)의 콜렉터측을 연결 구성하고 베이스측에 분배저항(R2)(R3) 및 다이오드(D1)를 통하여 레귤레이터(30)(40)와 연결 구성시켜 된 분리용 수신기의 전원 보호회로.A power source B 1 that is separated from the receiver through each of the regulators 30, 40, 50, and 60 in the rectifying circuits 10 and 20 on the secondary side of the power transformer (PT) and a direct current used inside the receiver. In a receiver in which the power sources B 2 , B 3 , and B 4 are separated from each other, a transistor Q 1 is connected between the rectifier circuit 10 and the regulator 30 through a capacitor C 1 , and the transistor The emitter is connected to the collector side of the transistor Q 2 grounded through the diode D 2 on the base side of (Q 1 ), and the distribution resistors R 2 (R 3 ) and the diode D 1 are connected to the base side. Power protection circuit of the receiver for separation is configured to be connected to the regulator (30) and (40) through.
KR2019850003096U 1985-03-23 1985-03-23 Power circuit KR880001431Y1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR2019850003096U KR880001431Y1 (en) 1985-03-23 1985-03-23 Power circuit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR2019850003096U KR880001431Y1 (en) 1985-03-23 1985-03-23 Power circuit

Publications (2)

Publication Number Publication Date
KR860012484U KR860012484U (en) 1986-10-10
KR880001431Y1 true KR880001431Y1 (en) 1988-04-15

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Family Applications (1)

Application Number Title Priority Date Filing Date
KR2019850003096U KR880001431Y1 (en) 1985-03-23 1985-03-23 Power circuit

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KR (1) KR880001431Y1 (en)

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Publication number Publication date
KR860012484U (en) 1986-10-10

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