KR840000992Y1 - Voltage automatic adjustment circuit - Google Patents

Voltage automatic adjustment circuit Download PDF

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Publication number
KR840000992Y1
KR840000992Y1 KR2019820007897U KR820007897U KR840000992Y1 KR 840000992 Y1 KR840000992 Y1 KR 840000992Y1 KR 2019820007897 U KR2019820007897 U KR 2019820007897U KR 820007897 U KR820007897 U KR 820007897U KR 840000992 Y1 KR840000992 Y1 KR 840000992Y1
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South Korea
Prior art keywords
voltage
transformer
transistor
resistor
triac
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KR2019820007897U
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Korean (ko)
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KR840002474U (en
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김상열
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주식회사금성사
허신구
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Publication of KR840002474U publication Critical patent/KR840002474U/en

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    • 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
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
    • Y02B70/00—Technologies for an efficient end-user side electric power management and consumption
    • Y02B70/10—Technologies improving the efficiency by using switched-mode power supplies [SMPS], i.e. efficient power electronics conversion e.g. power factor correction or reduction of losses in power supplies or efficient standby modes

Abstract

내용 없음.No content.

Description

전원전압 자동 절환회로Supply voltage automatic switching circuit

제1도는 본 고안의 회로도.1 is a circuit diagram of the present invention.

제2도는 종래의 전원 전압 절환회로.2 is a conventional power supply voltage switching circuit.

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

T1 : 1차측 트랜스 T2: 2차측 트랜스T1: Primary Transformer T 2 : Secondary Transformer

T3: 2차측 보조 트랜스 Z : 정류기 및 부하T 3 : Secondary secondary transformer Z: Rectifier and load

본 고안은 100V, 220V 상용 입력전원 전압을 선택 사용하는 경우에 있어서 트라이악(Triac) 소자를 이용하여 자동적으로 절환 사용이 가능토록한 전원 전압 자동 절환회로에 관한 것이다.The present invention relates to a power supply voltage automatic switching circuit that can be automatically switched using a triac element in the case of using a 100V, 220V commercial input power supply voltage.

종래에는 100V, 220V 겸용 제품의 입력 전원 전압절환 회로에 있어서 절환 스위치를 별도 설치하여 사용하는 경우이거나 또는 자동 전압 절환회로 구성에 있어 회로가 복잡하여 원가 상승 요인이 되는 경우가 있었다.Conventionally, in the input power voltage switching circuit of a combined product of 100V and 220V, a switching switch is separately installed or used, or a circuit is complicated in the automatic voltage switching circuit configuration, which may cause a cost increase.

전자의 경우에는 필요 입력 전원전압 선택시마다 일일이 스위치를 절환시켜야 하는 불편이 뒤따르며 또한 소비자의 과오로 인한 오선택 사용시에는 제품을 손상시키는 사례가 종종 발생 되었으며, 후자의 경우에는 회로구성이 복잡하여 원가 상승 요인은 물론 오동작을 하는 경우가 발생되었다.In the former case, it is inconvenient to switch the switch every time the required input power voltage is selected, and there is a case of damaging the product in case of incorrect selection due to consumer error.In the latter case, the cost is increased due to the complicated circuit configuration. Not only the factor but also the malfunction occurred.

본 고안은 이러한 점을 감안하여 별도 절환 스위치를 사용치 않음은 물론 간단한 회로구성에 의하여 입력전원 전압을 자동 선택할 수 있도록 안출한 것으로서 이를 첨부 도면에 의하여 상세히 설명하면 다음과 같다.The present invention does not use a separate switching switch in view of such a point, as well as a simple circuit configuration to be able to automatically select the input power voltage as described in detail by the accompanying drawings as follows.

제1도에서와 같이 통상의 전원 코드에 1차측 트랜스(T1)를 직결하고, 2차측 트랜스(T2)의 접점(c)에 트라이악(TD1)을 연결시키고, 주제어극은 정류기 및 부하(Z)의 입력단에 접속하고, 게이트극(G1)을 저항(R1, R3) 및 트랜지스터(Q1, Q3), 정전압 다이오드(ZD1) 다이오드(D1)을 통하여 2차측 보조 트랜스(T3)의 접점(e)에 연결시킨다.As shown in FIG. 1, the primary transformer T 1 is directly connected to a conventional power cord, and the triac TD 1 is connected to the contact c of the secondary transformer T 2 . It is connected to the input terminal of the load Z, and the gate electrode G 1 is connected to the secondary side through the resistors R 1 and R 3 , the transistors Q 1 and Q 3 , and the constant voltage diode ZD 1 diode D 1 . It is connected to the contact point e of the auxiliary transformer T 3 .

또한 2차측 트랜스(T2)의 접점(b)에 트라이악(TD2)을 연결시키고, 주제어극에 정류기 및 부하(Z)의 입력단에 접속하고, 게이트극(G2)으 저항(R2, R5) 및 트랜지스터(Q2), 다이오드(D1)을 통하여 상기한 접점(e)에 연결시킨다.In addition, the triac TD 2 is connected to the contact point b of the secondary transformer T 2 , the main electrode is connected to the input terminal of the rectifier and the load Z, and the gate electrode G 2 is connected to the resistor R 2. , R 5 ), the transistor Q 2 , and the diode D 1 are connected to the contact point e.

미설명 부호 Ac는 100V, 220V 겸용 입력 전원전압이고, V1은 100V 인가시 2차측 트랜스(T2)의 접점(a, c)간의 유기전압.Reference numeral Ac is an input power supply voltage for both 100 V and 220 V, and V 1 is an induced voltage between the contacts a and c of the secondary transformer T 2 when 100 V is applied.

V2은 100V 인가시 2차측 트랜스(T2)의 접점(a, b)간의 유기전압.V 2 is an induced voltage between the contacts a and b of the secondary transformer T 2 when 100 V is applied.

V3은 100V 인가시 2차측 보조 트랜스(T3)의 접점(d, e)간의 유기전압.V 3 is an induced voltage between the contacts d and e of the secondary side transformer T 3 when 100 V is applied.

Vd은 100V 인가시 2차측 보조 트랜스(T3)의 접점(d, e)간의 직류전압.Vd is a DC voltage between the contacts d and e of the secondary auxiliary transformer T 3 when 100 V is applied.

V1'은 220V 인가시 2차측 트랜스(T2)의 접점(a, c)간의 유기전압.V 1 'is the induced voltage between the contacts (a, c) of the secondary transformer (T 2 ) when 220V is applied.

V2'은 220V 인가시 2차측 트랜스(T2)의 접점(a, b)간의 유기전압.V 2 'is the induced voltage between the contacts (a, b) of the secondary transformer (T 2 ) when 220V is applied.

V3'은 220V 인가시 2차측 보조 트랜스(T3)의 접점(d, e)간의 유기전압.V 3 'is an induced voltage between the contact points (d, e) of 220V is applied upon the secondary side auxiliary transformer (T 3).

Vd'은 220V 인가시 2차측 보조 트랜스(T3)의 접점(d, e)간의 직류전압.Vd 'is a DC voltage between the contacts (d, e) of the secondary auxiliary transformer (T 3 ) when 220V is applied.

C2는 콘덴서이고, s는 전압절환 스위치이다.C 2 is a condenser and s is a voltage switching switch.

이와 같이 구성된 본 고안의 작용효과를 설명하면 다음과 같다.Referring to the effect of the present invention configured as described above are as follows.

제1도는 본 고안의 회로도로서 100V 입력 전원전압이 공급되었을 경우에는 1차측 트랜스(T1)에 교류전원이 유기되어 2차측 트랜스(T2)와 보조 트랜스(T3)에 각각 유기전압(V1, V2, V3)이 나타나게 되고, 이때 유기전압(V3)은 다이오드(D1), 콘덴서(C1)에 의하여 정류되어 직류 전압(Vd)이 정전압 다이오드(ZD1)의 캐소우드측에 인가된다.When the first turn is the supply 100V input supply voltage a circuit diagram of the subject innovation are respectively the induced voltage in the primary side transformer (T 1) The AC power is induced in the secondary side transformer (T 2) and the auxiliary transformer (T 3) (V 1 , V 2 , V 3 ) appears, where the induced voltage V 3 is rectified by the diode D 1 and the capacitor C 1 so that the direct current voltage Vd is the cathode of the constant voltage diode ZD 1 . Is applied to the side.

이 경우에 정전압 다이오드(ZD1)의 제너 전압을 직류전압(Vd)에 비하여 큰 값으로 설정하게 되면 이로 인하여 정전압 다이오드(ZD1)는 부도통 상태가 되므로서 애노우드측에 저항(R4, R5)을 통하여 각각 접속된 트랜지스터(Q3, Q2)는 부도통 상태가 되고 트랜지스터(Q2)의 콜렉터 측에 저항(R2)을 통하여 접속된 트라이악(TD2)도 부도통 상태가 된다.If the zener voltage of the zener diode (ZD 1) in this case set to a value greater than the direct-current voltage (Vd) which due to the zener diode (ZD 1) is because the default barrel state standing against the anode side (R 4, Transistors Q 3 and Q 2 respectively connected through R 5 ) are in a non-conductive state, and a triac TD 2 connected through a resistor R 2 on the collector side of transistor Q 2 is also in a non-conducting state. Becomes

반변 저항(R3)을 통하여 접속된 트랜지시터(Q1)의 베이스측에는 직류전압(Vd)가 인가되어 트랜지스터(Q1)는 도통 상태가 되고 트랜지스터(Q1)의 콜렉터측에 접속된 저항(R1)을 통하여 트리거 전류가 게이트(G1)에 흘러 트라이악(TD1)은 턴온(turm on) 상태가 된다.The DC voltage Vd is applied to the base side of the transistor Q 1 connected through the half-side resistor R 3 so that the transistor Q 1 is in a conductive state and is connected to the collector side of the transistor Q 1 . The trigger current flows into the gate G 1 through R 1 to turn on the triac TD 1 .

따라서 직류전압(Vd')은 저항(R3)-트랜지스터(Q1)-저항(R1)-트라이악(TD1) 순으로 도통되어 접점(a, c)간의 유기전압(V1)이 정류기 및 부하(Z)에 공급된다.Therefore, the DC voltage Vd 'is conducted in the order of resistance (R 3 ) -transistor (Q 1 ) -resistance (R 1 ) -triac (TD 1 ) so that induced voltage (V 1 ) between the contacts (a, c) is reduced. It is supplied to the rectifier and the load Z.

한편 220V 입력 전원 전압이 공급되었을 경우에는 2차측 트랜스(T2)와 보조트랜스(T3)에 각각 유기전압(V1', V2', V3')이 나타나게 되고, 이때 유기전압(V3')은 상술한 바와 같이 다이오드(D1), 콘덴서(C1)에 의하여 정류되어 직류전압(Vd')이 정전압 다이오드(ZD1)의 캐소우드측에 인가된다.On the other hand, when the 220V input power voltage is supplied, the induced voltages V 1 ′, V 2 ′, and V 3 ′ appear on the secondary transformer T 2 and the auxiliary transformer T 3 , respectively. 3 ') is rectified by the diode D 1 and the capacitor C 1 as described above, so that the DC voltage Vd' is applied to the cathode side of the constant voltage diode ZD 1 .

이 경우에 정전압 다이오드(ZD1)의 제너전압을 직류전압(Vd')에 비하여 작은 값으로 설정하게 되면 이로 인하여 정전압 다이오드(ZD1)는 도통 상태가 되므로서 애노우측에 저항(R4, R5)을 통하여 각각 접속된 트랜지스터(Q3, Q2)가 도통상태로 되고 트랜지스터(Q3)가 도통상태이므로 트랜지스터(Q1)의 베이스측 전위가 0(Zero)로 되어 트랜지스터(Q1)는 부도통 상태로 되어 저항(R1)을 통하여 접속된 트라이악(TD1)도 부도통 상태가 된다.If the zener voltage of the zener diode (ZD 1) in this case set to a value less than the direct-current voltage (Vd ') because of this zener diode (ZD 1) is a resistance (R 4, the standing anode right since the conductive state R 5 ) The transistors Q 3 and Q 2 respectively connected through 5 ) are in a conducting state, and the transistor Q 3 is in a conducting state, and thus the base-side potential of the transistor Q 1 becomes 0 (Zero), thereby making the transistor Q 1 . Becomes a non-conduction state, and the triac TD 1 connected via the resistor R 1 also becomes a non-conduction state.

반면 상술한 바와 같이 트랜지스터(Q2)는 도통 상태가 되어 콜렉터측에 접속된 저항(R2)을 통하여 트리거 전류가 게이트(G2)에 흘러 트라이악(TD2)은 턴온(Turn On) 상태가 되고 따라서 직류전압(Vd')은 저항(R5)-트랜지스터(Q2)-저항(R2)-라트이악(TD2)의 순으로 도통되어 2차측 트랜스(T2)의 접점(a, b) 간의 유기전압(V2')이 정류기 및 부하(Z)에 공급된다.On the other hand, as described above, the transistor Q 2 is in a conductive state, and the trigger current flows through the gate G 2 through the resistor R 2 connected to the collector side, so that the triac TD 2 is turned on. Therefore, the DC voltage Vd 'is conducted in the order of resistance (R 5 ) -transistor (Q 2 ) -resistance (R 2 ) -lattice (TD 2 ) so that the contact (a) of the secondary transformer (T 2 ) The induced voltage V 2 ′ between and b is supplied to the rectifier and the load Z.

이상에서와 같이 동작하는 본 고안은 2차측 트랜스에 각각 트라이악을 접속시켜 입력 전원 전압의 선택에 따라 각각의 트라이악을 트리거시켜 2차 유기전압을 스위칭 하므로서 원가 상승 요인없이 간편하게 입력전원 전압을 자동 선택할 수 있도록한 것이다.The present invention, which operates as described above, automatically connects the triac to the secondary transformer and triggers each triac according to the selection of the input power voltage to switch the secondary induced voltage so that the input power voltage is automatically changed without a cost increase factor. It is to choose.

Claims (1)

통상의 2차측 트랜스(T2)의 접점(c)와 점점(b)에 각각의 트라이악(TD1, TD2)을 통하여 정류기 및 부하(Z)에 연결시킨 전원 회로에 있어서, 2차측 보조 트랜스(T3)와 트라이악(TD1)의 게이트극(G1) 사이에저항(R3), 트랜지스터(Q1), 저항(R1)을 접속하고, 트라이악(TD2)의 게이트극(G2) 사이에 설정 전압에 의하여 도통되는 정전압 다이오드(ZD1)와 저항(R4), 트랜지스터(Q3), 저항(R5), 트랜지스터(Q2), 저항(R2)을 접속시키어 구성됨을 특징으로 한 전원 전압 자동 절환회로.In the power supply circuit connected to the rectifier and the load (Z) through the triacs (TD 1 , TD 2 ) to the contacts (c) and (b) of the normal secondary transformer (T 2 ), the secondary side auxiliary The resistor R 3 , the transistor Q 1 , and the resistor R 1 are connected between the transformer T 3 and the gate electrode G 1 of the triac TD 1 , and the gate of the triac TD 2 is connected. The constant voltage diode ZD 1 and the resistor R 4 , the transistor Q 3 , the resistor R 5 , the transistor Q 2 and the resistor R 2 , which are conducted by the set voltage between the poles G 2 , Power supply voltage automatic switching circuit characterized in that the connection is configured.
KR2019820007897U 1982-10-08 1982-10-08 Voltage automatic adjustment circuit KR840000992Y1 (en)

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Application Number Priority Date Filing Date Title
KR2019820007897U KR840000992Y1 (en) 1982-10-08 1982-10-08 Voltage automatic adjustment circuit

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Application Number Priority Date Filing Date Title
KR2019820007897U KR840000992Y1 (en) 1982-10-08 1982-10-08 Voltage automatic adjustment circuit

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KR840000992Y1 true KR840000992Y1 (en) 1984-06-14
KR840002474U KR840002474U (en) 1984-06-27

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