KR900000146Y1 - Switching circuit of power source - Google Patents

Switching circuit of power source Download PDF

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Publication number
KR900000146Y1
KR900000146Y1 KR2019860021232U KR860021232U KR900000146Y1 KR 900000146 Y1 KR900000146 Y1 KR 900000146Y1 KR 2019860021232 U KR2019860021232 U KR 2019860021232U KR 860021232 U KR860021232 U KR 860021232U KR 900000146 Y1 KR900000146 Y1 KR 900000146Y1
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South Korea
Prior art keywords
power
relay
power supply
switching
transformer
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KR2019860021232U
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Korean (ko)
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KR880013819U (en
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권희성
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삼성전자주식회사
한형수
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Priority to KR2019860021232U priority Critical patent/KR900000146Y1/en
Priority to JP1987190068U priority patent/JPS63109590U/ja
Publication of KR880013819U publication Critical patent/KR880013819U/en
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    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02MAPPARATUS 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
    • H02M1/00Details of apparatus for conversion
    • H02M1/16Means for providing current step on switching, e.g. with saturable reactor
    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02MAPPARATUS 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
    • H02M1/00Details of apparatus for conversion
    • H02M1/08Circuits specially adapted for the generation of control voltages for semiconductor devices incorporated in static converters

Abstract

내용 없음.No content.

Description

전원스위칭회로Power Switching Circuit

제1도는 종래의 전원스위칭회로도.1 is a conventional power supply switching circuit diagram.

제2도는 본 고안의 회로도.2 is a circuit diagram of the present invention.

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

1 : 교류전원부 2∼5 : 부하1: AC power supply unit 2-5: Load

T : 트랜스포머 L11 : 트랜스포머의 1차측코일T: Transformer L11: Primary coil of transformer

L21∼L23 : 트랜포스머의 2차측코일 BR1∼BR3 : 브릿지형 정류부L21 to L23: Secondary coils of transformers BR1 to BR3: Bridge-type rectifiers

MP : 마이크로프로세서 IC1∼IC3 : 레귤레이터MP: Microprocessor IC1 to IC3: Regulator

PS : 전원제어신호출력단자 SD1,SD2 : 스위칭소자PS: Power control signal output terminal SD1, SD2: Switching element

TR : 트랜지스터 RY : 릴레이TR: Transistor RY: Relay

a,b : 릴레이접점 ZD1 : 제너다이오드a, b: Relay contact ZD1: Zener diode

D1∼D4 : 다이오드D1 to D4: Diode

[산업상의 이용분야][Industrial use]

본 고안은 전원스위칭회로에 관한 것으로서, 특히 1개의 트랜스포머를 사용해서 여러가지 전원을 스위칭하고자 할 경우 릴레이를 이용해서 트랜스포머 2차코일의 접지점형성을 제어함으로써 전원을 스위칭하도록된 전원스위칭회로에 관한 것이다.The present invention relates to a power supply switching circuit, and more particularly, to a power supply switching circuit configured to switch a power supply by controlling a ground point formation of a transformer secondary coil using a relay when one transformer is used to switch various power supplies.

[종래의 기술 및 그 문제점][Traditional Technology and Problems]

제1도는 일반적으로 1개의 트랜스포머를 사용해서 다른 전원들을 스위칭하는 방법을 나타낸 것으로, 이러한 회로에서는 교류전원부(1)에서 인가된 전원이 트랜스포머(T)의 1차측코일(L11)에 인가됨에 따라 2차측코일(L21∼L23)에 전원이 유기되는 바, 그중 2차측코일(L21)에 인가된 전원은 다이오드(D1∼D4)로 구성된 브릿지형 정류부(BR1)를 겨쳐 레귤레이터(IC1)에 입력됨에 따라 레귤레이터(IC1)에서는 입력이나 출력부하의 변화에 관계없이 일정한 전원을 마이크로프로세서(MP)로 추력시키게 되고, 이 마이크로프로세서(MP)는 전압값을 계산하게 되며, 여타 부하(2∼5)로의 전원공급을 결정하는 마이크로프로세서(MP)의 전원제어신호출력단자(PS)에서는 전원공급 프로그램에 따라 트랜지스터(TR)의 베이스단자로 프로그램신호를 출력하게 된다.FIG. 1 illustrates a method of switching other power sources using one transformer in general. In this circuit, power applied from the AC power supply unit 1 is applied to the primary coil L11 of the transformer T. Since power is induced to the secondary coils L21 to L23, the power applied to the secondary coil L21 is inputted to the regulator IC1 through the bridge rectifier BR1 composed of the diodes D1 to D4. In the regulator IC1, regardless of the change in the input or output load, a constant power supply is thrust into the microprocessor MP. The microprocessor MP calculates a voltage value and supplies power to the other loads 2 to 5. The power control signal output terminal PS of the microprocessor MP determining the supply outputs the program signal to the base terminal of the transistor TR according to the power supply program.

이때 마이크로프로세서(MP)의 전원제어신호출력단자(PS)로부터 출력된 하이레벨신호가 트랜지스터(TR)의 베이스단자에 인가될 경우에는 트랜지스터(TR)가 턴온되어 반도체소자를 포함해서 구성된 스위칭소자(SD1)(SD2)가 턴온됨으로써 트랜스포머(T)의 2차측코일(L22)(L23)에 유기된 전원이 브릿지형정류부(BR2)(BR3)와 스위칭소자(SD1)(SD2) 및 레귤레이터(IC2)(IC3)를 거쳐 각 부하(2∼5)로 출력되게 된다.At this time, when the high level signal output from the power supply control signal output terminal PS of the microprocessor MP is applied to the base terminal of the transistor TR, the transistor TR is turned on to include a switching device including a semiconductor device ( The power supplied to the secondary side coils L22 and L23 of the transformer T by turning on the SD1 and SD2 is bridged rectifier BR2, BR3, the switching element SD1, SD2, and the regulator IC2. It is output to each of the loads 2 to 5 via IC3.

따라서 각 부하(2∼5)에 전원이 공급되어 각각의 기능을 수행하게 된다.Thus, power is supplied to each of the loads 2 to 5 to perform respective functions.

한편, 마이크로프로세서(MP)의 전원제어신호출력단자(PS)로부터 로우레벨신호가 출력될 경우에는 트랜지스터(TR)가 턴오프되어 스위칭소자(SD1)(SD2)가 턴오프됨으로써 브릿지형 정류부(BR2)(BR3)에서 정류된 전원이 레귤레이터(IC2)(IC3)로 인가되지 못하므로 각 부하(2∼5)에 전원이 인가되지 않게 된다.On the other hand, when the low level signal is output from the power control signal output terminal PS of the microprocessor MP, the transistor TR is turned off and the switching elements SD1 and SD2 are turned off so that the bridge rectifier BR2 is turned off. Since the power rectified in BR3 is not applied to the regulators IC2 and IC3, power is not applied to each of the loads 2 to 5.

상기한 바와같이 종래의 전원 스위칭회로에서는 각각의 부하(2∼5)에 인가되는 전원을 예컨대 트랜지스터등을 이용한 스위칭소자(SD1)(SD2)로 스위칭시킴으로써 트랜지스터나 논리회로를 포함하여 구성되는 스위칭소자의 증가로 인해 전체회로가 복잡해지게 될 뿐만 아니라 일시적으로 부하를 단락시키거나 전원을 온시켰을때 초기상태에서 일시적으로 흐르는 대전류, 즉 과전류 또는 외부로 부터 충격펄스가 인가될 경우에는 스위칭소자가 파괴될 위험이 따르게 된다.As described above, in the conventional power supply switching circuit, a switching element including a transistor or a logic circuit is switched by switching the power applied to each of the loads 2 to 5 to a switching element SD1 (SD2) using a transistor or the like. Not only does the overall circuit become complicated due to the increase of, but the switching device is destroyed when a large current flowing temporarily in the initial state, that is, an overcurrent or an impact pulse from outside, is applied when the load is temporarily shorted or the power is turned on. There is a risk.

[고안의 목적][Purpose of designation]

본 고안은 상기한 점을 감안해서 고안된 것으로, 스위칭시키고자 하는 전원이 유기되는 트랜스포머 2차측코일의 접지점형성 여부를 릴레이로 제어함으로써 회로가간단하면서도 관전류 또는 충격펄스에 의해 소자가 파괴됨이 없이 전원스위칭 동작을 수행할 수 있도록 된 전원스위칭회로를 제공하고자 함에 그 목적이 있다.The present invention has been devised in view of the above-mentioned point, and by controlling the relay to determine whether the grounding point of the transformer secondary coil in which the power to be switched is induced is relayed, the circuit is simple and the power supply is switched without destroying the device by the tube current or the impact pulse. It is an object of the present invention to provide a power supply switching circuit capable of performing an operation.

[고안의 구성][Composition of design]

상기 목적을 달성하기 위한 본 고안은, 교류전원부(1)와 트랜스포머(T), 브릿지형 정류부(BR1∼BR3), 레귤레이터(IC1∼IC3) 및 부하(2∼5)에 대한 전원인가의 여부를 결정해서 제어하는 마이크로프로세서(MP)와 스위칭트랜지스터(TR)등을 구비하여 구성된 전원스위칭회로에 있어서, 상기 브릿지형 정류부(BR2)(BR3)의 접지점이 공통으로 접속되어 릴레이(RY)내의 릴레이접점(a)에 연결되면서 상기 브릿지형 정류부(BR1)의 출력단자가 저항(R3)을 거쳐 릴레이(RY)내의 릴레이코일에 연결되어 부하(2∼5)에 대한 전원인가가 상기 스위칭트랜지스터(TR)의 온. 오프에 따라 구동되는 상기 릴레이(RY)에 의해 스위칭되도록 구성되어 있다.The present invention for achieving the above object, whether the power supply for the AC power supply unit 1 and the transformer (T), bridge type rectifier (BR1 to BR3), regulators (IC1 to IC3) and loads (2 to 5). In a power supply switching circuit including a microprocessor (MP) and a switching transistor (TR) for determining and controlling, the ground points of the bridge rectifiers BR2 and BR3 are commonly connected to each other so that the relay contacts in the relay RY are connected. While being connected to (a), the output terminal of the bridge rectifier BR1 is connected to the relay coil in the relay RY via the resistor R3 to supply power to the loads 2 to 5 of the switching transistor TR. On. It is configured to be switched by the relay RY driven in accordance with the off.

(작용)(Action)

상기와 같이 구성된 본 고안은, 트랜스포머의 2차측코일의 접지점형성을 릴레이를 사용해서 제어함으로써 전원장치의 회로를 간단하게 구성시켜줄수 있게 되고, 또 과전류나 충격펄스에 의한 소자의 파괴없이 스위칭전원을 안정하게 공급해 줄 수 있게된다.According to the present invention configured as described above, the circuit of the power supply device can be easily configured by controlling the ground point formation of the secondary side coil of the transformer by using a relay, and switching power is supplied without destroying the device by overcurrent or shock pulse. It is possible to supply stably.

(실시예)(Example)

이하 예시도면을 참조해서 본 고안에 따른 실시예를 상세히 설명한다.Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings.

제2도는 본 고안에 따른 회로도로서, 제1도와 동일한 기능을 수행하는 소자에 대해서는 동일한 참조부호를 붙이고 그에 대한 상세한 설명을 생략한다.FIG. 2 is a circuit diagram according to the present invention, and the same reference numerals are used for elements performing the same function as that of FIG. 1, and a detailed description thereof is omitted.

먼저, 교류전원부(1)에서 인가된 교류전원이 트랜스포머(T)의 1차측코일(L11)에 인가되면 2차측코일(L21)에 교류전원이 유기되고, 이 2차측코일(L21)에 유기된 교류전원은 다이오드(D1∼D4)로 구성된 브릿지형 정류부(BR1)에 의해 정류된 다음 레귤레이터(IC1)에 입력됨으로써 레귤레이터(IC1)에서는 입력이나 출력부하의 변화에 관계없이 일정한 크기의 직류전원을 마이크로프로세서(MP)로 출력시키게 되며, 마이크로프로세서(MP)에서는 이러한 직류전원으로 부하(2)를 구동시키게 됨과 더불어 미리 설정된 전원인가 프로그램에 따라 부하(3∼5)를 구동시켜야 할 경우 전원제어신호출력단자(PS)로부터 트랜지스터(TR)의 베이스단자로 하이레벨신호를 인가하게 된다.First, when the AC power applied from the AC power supply unit 1 is applied to the primary coil L11 of the transformer T, the AC power is induced in the secondary coil L21, and is induced in the secondary coil L21. The AC power is rectified by the bridge rectifier BR1 composed of diodes D1 to D4, and then input to the regulator IC1. Thus, the regulator IC1 converts the DC power of a certain size into a micrometer regardless of the change in the input or output load. Output to the processor (MP), the microprocessor (MP) to drive the load (2) by such a DC power supply and the power control signal output when it is necessary to drive the load (3 to 5) according to a preset power application program The high level signal is applied from the terminal PS to the base terminal of the transistor TR.

이에 따라 트랜지스터(TR)가 턴온되어 릴레이(RY)내에 있는 릴레이코일이 자화되고, 이 자화에 의해 릴레이스위치(SW)가 릴레이스위치접점(a)에 접촉됨으로써 트랜지포머(T)의 2차측코일(L22)(L23)에 접지점을 형성시켜 주게 된다.Accordingly, the transistor TR is turned on and the relay coil in the relay RY is magnetized. The magnetization of the relay switch SW makes contact with the relay switch contact a so that the secondary coil of the transistor T is magnetized. A ground point is formed at (L22) and (L23).

따라서 트랜스포머(T)의 2차측코일(L22)(L23)에 유기된 교류전원이 각각 다이오드(D6∼D9)로 구성된 브릿지형 정류부(BR2)와 레귤레이터(IC2), 다이오드(D6-D9)로 구성된 브릿지형 정류부(BR2)와 레귤레이터(IC2)(D5)와 제너다이오드(ZD1)를 통해 정류되어 각 부하(4, 5, 3)는 각 기능에 따른 작업을 수행하게 된다.Therefore, AC power induced in the secondary coils L22 and L23 of the transformer T is composed of a bridge rectifier BR2 composed of diodes D6 to D9, a regulator IC2, and a diode D6-D9, respectively. The rectifier is rectified through the bridge rectifier BR2, the regulator IC2 D5, and the zener diode ZD1 so that the loads 4, 5, and 3 perform tasks according to their respective functions.

한편, 마이크로프로세서(MP)의 전원인가 프로그램이 부하(3∼5) 비구동상태로 된 경우에는 제어신호출력단자(PS)로 부터 로우레벨신호가 트랜지스터(TR)의 베이스단자에 인가되어 트랜지스터(TR)가 턴오프되므로 릴레이(RY)내에 있는 릴레이코일에 접지점이 형성되지 못하게 된다. 따라서 릴레이코일이 자화되지 않게 되므로 릴레이스위치(SW)가 릴레이접점(b)으로 접속되게 되어 트랜스포머(T)의 2차코일(L22)(L23)에 접지점을 형성시켜 주지 못하게 된다.On the other hand, when the power supply program of the microprocessor MP is in the non-driven state of the loads 3 to 5, a low level signal is applied from the control signal output terminal PS to the base terminal of the transistor TR so that the transistor ( Since TR) is turned off, the ground point is not formed in the relay coil in the relay RY. Therefore, since the relay coil is not magnetized, the relay switch SW is connected to the relay contact b so that a ground point cannot be formed at the secondary coils L22 and L23 of the transformer T.

[고안의 효과][Effect of design]

상기한 바와같이 본 고안에 의하면 스위칭전원을 공급해주기 위해 종래의 반도체스위칭소자 대신 과전압과 고전류에 내성이 강하면서 간단하게 회로를 구성시킬수 있는 릴레이를 사용함으로써 전원장치 전체의 회로구성이 간단하게 될뿐만 아니라 과전류 또는 충격펄스에 의한 소자의 파괴없이 스위칭전원을 안정하게 공급해 줄수 있게 된다.As described above, according to the present invention, instead of the conventional semiconductor switching device, the circuit configuration of the entire power supply device is simplified by using a relay that is resistant to overvoltage and high current and can easily configure a circuit to supply a switching power supply. In addition, the switching power supply can be stably supplied without destroying the device due to overcurrent or shock pulse.

Claims (1)

교류전원부(1)와 트랜스포머(T), 브릿지형 정류부(BR1∼BR3), 레귤레이터(IC1∼IC3) 및 부하(2∼5)에 대한 전원인가의 여부를 결정해서 제어하는 마이크로프로세서(MP)와 스위칭트랜지스터(TR)등을 구비하여 구성된 전원스위칭회로에 있어서, 상기 브릿지형 정류부(BR2)(BR3)의 접지점이 공통으로 접속되어 릴레이(RY)내의 릴레이접점(a)에 연결되면서 상기 브릿지형 정류부(BR1)의 출력단자가 저항(R3)을 겨쳐 릴레이(RY)내의 릴레이코일에 연결되어 부하(2∼5)에 대한 전원인가가 상기 스위칭트랜지스터(TR)의 온. 오프에 따라 구동되는 상기 릴레이(RY)에 의해 스위칭되도록 된 것을 특징으로 하는 전원스위칭 회로.A microprocessor (MP) which determines and controls whether to supply power to the AC power supply unit 1, the transformer T, the bridge rectifiers BR1 to BR3, the regulators IC1 to IC3, and the loads 2 to 5; In the power supply switching circuit including a switching transistor (TR) or the like, a ground point of the bridge rectifiers BR2 and BR3 is connected in common and is connected to a relay contact a in the relay RY while the bridge rectifier is connected. The output terminal of BR1 is connected to the relay coil in the relay RY via the resistor R3, so that power to the loads 2 to 5 is turned on of the switching transistor TR. And switching by the relay (RY) driven according to the off state.
KR2019860021232U 1986-12-26 1986-12-26 Switching circuit of power source KR900000146Y1 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
KR2019860021232U KR900000146Y1 (en) 1986-12-26 1986-12-26 Switching circuit of power source
JP1987190068U JPS63109590U (en) 1986-12-26 1987-12-16

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR2019860021232U KR900000146Y1 (en) 1986-12-26 1986-12-26 Switching circuit of power source

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KR880013819U KR880013819U (en) 1988-08-30
KR900000146Y1 true KR900000146Y1 (en) 1990-01-30

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100569717B1 (en) * 1999-03-08 2006-04-10 삼성전자주식회사 A circuit for controlling switching mode power supply

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS57174715A (en) * 1981-04-20 1982-10-27 Hitachi Ltd Switching power supply

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100569717B1 (en) * 1999-03-08 2006-04-10 삼성전자주식회사 A circuit for controlling switching mode power supply

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Publication number Publication date
KR880013819U (en) 1988-08-30
JPS63109590U (en) 1988-07-14

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