KR870001201Y1 - Power circuit - Google Patents
Power circuit Download PDFInfo
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- KR870001201Y1 KR870001201Y1 KR2019840012027U KR840012027U KR870001201Y1 KR 870001201 Y1 KR870001201 Y1 KR 870001201Y1 KR 2019840012027 U KR2019840012027 U KR 2019840012027U KR 840012027 U KR840012027 U KR 840012027U KR 870001201 Y1 KR870001201 Y1 KR 870001201Y1
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- triac
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02P—CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
- H02P13/00—Arrangements for controlling transformers, reactors or choke coils, for the purpose of obtaining a desired output
- H02P13/06—Arrangements for controlling transformers, reactors or choke coils, for the purpose of obtaining a desired output by tap-changing; by rearranging interconnections of windings
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- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05F—SYSTEMS FOR REGULATING ELECTRIC OR MAGNETIC VARIABLES
- G05F1/00—Automatic systems in which deviations of an electric quantity from one or more predetermined values are detected at the output of the system and fed back to a device within the system to restore the detected quantity to its predetermined value or values, i.e. retroactive systems
- G05F1/10—Regulating voltage or current
- G05F1/12—Regulating voltage or current wherein the variable actually regulated by the final control device is ac
- G05F1/14—Regulating voltage or current wherein the variable actually regulated by the final control device is ac using tap transformers or tap changing inductors as final control devices
- G05F1/16—Regulating voltage or current wherein the variable actually regulated by the final control device is ac using tap transformers or tap changing inductors as final control devices combined with discharge tubes or semiconductor devices
- G05F1/20—Regulating voltage or current wherein the variable actually regulated by the final control device is ac using tap transformers or tap changing inductors as final control devices combined with discharge tubes or semiconductor devices semiconductor devices only
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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
- H02M5/00—Conversion of ac power input into ac power output, e.g. for change of voltage, for change of frequency, for change of number of phases
- H02M5/02—Conversion of ac power input into ac power output, e.g. for change of voltage, for change of frequency, for change of number of phases without intermediate conversion into dc
- H02M5/04—Conversion of ac power input into ac power output, e.g. for change of voltage, for change of frequency, for change of number of phases without intermediate conversion into dc by static converters
- H02M5/10—Conversion of ac power input into ac power output, e.g. for change of voltage, for change of frequency, for change of number of phases without intermediate conversion into dc by static converters using transformers
- H02M5/12—Conversion of ac power input into ac power output, e.g. for change of voltage, for change of frequency, for change of number of phases without intermediate conversion into dc by static converters using transformers for conversion of voltage or current amplitude only
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- General Physics & Mathematics (AREA)
- Radar, Positioning & Navigation (AREA)
- Automation & Control Theory (AREA)
- Rectifiers (AREA)
Abstract
내용 없음.No content.
Description
제1도는 본 고안의 회로도.1 is a circuit diagram of the present invention.
제2도는 종래의 회로도.2 is a conventional circuit diagram.
* 도면의 주요부분에 대한 부호의 설명* Explanation of symbols for main parts of the drawings
T1: 1차측 트랜스 T2: 2차측 트랜스T 1 : Primary transformer T 2 : Secondary transformer
D1,D2,…,D8: 다이오드 Q1,Q2: 트랜지스터D 1 , D 2 ,.. , D 8 : Diode Q 1 , Q 2 : Transistor
TD1: 트라이악 G : 게이트TD 1 : Triac G: Gate
C1,C2,…,C4: 콘덴서 Z : 부하C 1 , C 2 ,... , C 4 : Capacitor Z: Load
R1,R2: 저항 ZD1: 제너다이오드R 1 , R 2 : Resistor ZD 1 : Zener Diode
본 고안은 100V, 220V 상용 입력전압을 선택 사용하는 경우에 있어서 트라이악(소자를 이용하여 자동적으로 절환되어 일정한 정류전압을 얻도록 구성된 전원전압 자동 절환회로에 관한 것이다.The present invention relates to a power supply voltage automatic switching circuit configured to obtain a constant rectified voltage by using a triac (automatic switching using a device when using 100V, 220V commercial input voltage.
종래에는 100V, 220V겸용 제품을 입력전원 전압 절환회로에 있어서 기기내에 절환스위치(S1)를 별도 설치하여 사용하는 경우이거나 또는 수개의 트라이악과 이를 제어할 수 있는 다단의 트랜지스터로서 스위칭회로를 구성시켜야 하기 때문에 자동전압 절환회로를 구성하는데 있어 회로가 복잡하여져 원가 상승요인이 되는 경우가 있었다.Conventionally, a 100V, 220V combined product should be used when a switching switch (S 1 ) is separately installed in a device in an input power voltage switching circuit, or a switching circuit must be configured as several triacs and a multi-stage transistor that can control it. Therefore, there are cases where the circuit becomes complicated in the automatic voltage switching circuit and causes a cost increase.
전자의 경우에는 필요 입력전원 전압 선택시마다 일일이 스위치를 절환시켜야 하는 불편이 뒤따르며 또한 소비자의 과오로 인한 오선택 사용시에는 제품을 손상시키는 사례가 종종 발생되었으며 후자의 경우에는 제2도와 같은 회로를 구성시켜 100V 입력시 트랜지스터(Q1)를 도통시켜 트라이악(TD1)를 구동시키고 220V 입력시에는 트랜지스터(Q2)(Q3)를 도통시켜 트랜지스터(Q1)로 인가되는 전원은 트랜지스터(Q3)로 차단시키고 트랜지스터(Q2)로 트라이악(TD2)를 구동시키도록 하였으나, 트랜지스터를 제어하기 위한 전원이 별도의 트랜스(T3)로부터 인가되도록 구성하여야 할뿐 아니라 수개의 트라이악과 이를 제어할 뿐 아니라 수개의 트라이악과 이를 제어할 수 있는 스위칭 트랜지스터가 필요하기 때문에 자동 절환회로 구성이 복잡하여져 원가상승 요인은 물론 오동작을 하는 경우가 발생되는 단점이 있었다.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 that the product is often damaged in case of incorrect selection due to a customer's mistake. In the latter case, a circuit like FIG. At 100V input, the transistor Q 1 conducts to drive the triac TD 1 , and at 220V input, the transistor Q 2 conducts Q 3 and the power applied to the transistor Q 1 is applied to the transistor Q 3. ) And to drive the triac (TD 2 ) with the transistor (Q 2 ), but the power to control the transistor must be configured to be applied from a separate transformer (T 3 ) as well as several triacs and control In addition to the need for several triacs and switching transistors to control them, the automatic switching circuit configuration is complicated Win factors, as well as had the disadvantage that if a malfunction occurs.
본 고안은 이와 같은 점을 감안하여 100V 입력전원 전압이 공급될 때에는 트랜지스터로 통하여 트라이악을 도통시켜 배압 정류회로를 구성하여 일정한 정류 전압을 얻도록 하고 220V 입력전원 전압이 공급될 때에는 트라이악을 차단하여 반파정류 회로를 구성하여 일정한 정류전압을 얻도록 함으로써 입력전원 전압의 선택에 따라 배압정류 회로와 반파 정류회로로 자동 절환되게 구성한 것으로, 이를 첨부 도면에 의하여 상세히 설명하면 다음과 같다.In view of the above, the present invention provides a constant voltage rectifying circuit by conducting a triac through a transistor when a 100V input power supply voltage is supplied to obtain a constant rectified voltage, and blocks a triac when a 220V input power supply voltage is supplied. By configuring the half-wave rectifier circuit to obtain a constant rectified voltage, it is configured to automatically switch between the back-pressure rectifier circuit and the half-wave rectifier circuit according to the selection of the input power supply voltage, which will be described in detail with reference to the accompanying drawings.
본 고안은 100V, 220V 입력전압이 1차, 2차 트랜스(T1)(T2)로 통하여 인가되게 구성한 후 2차측 트랜스(T2) 중간랩접점(b)에 인가되는 전압이 다이오드(D1)와 콘덴서(C1)를 통하여 정류화되게 구성하여 저항(R1)을 통하여 트랜지스터(Q1)(Q2) 사이에 연결하며 제너다이오드(ZD1)로 인가되는 직류전압을 비교하여 상호 역구동하는 트랜지스터(Q1)(Q2)를 제어하도록 구성한 것으로 입력전압 220V 인가시 트랜지스터(Q1)가 도통하고 100V 인가시에 트랜지스터(Q2)가 도통되도록 구성한 것이다.According to the present invention, after the 100V and 220V input voltages are configured to be applied through the primary and secondary transformers (T 1 ) (T 2 ), the voltage applied to the intermediate transformer contact point (b) of the secondary side transformer (T 2 ) is diode (D). 1 ) and rectified through the capacitor (C 1 ) and connected between the transistor (Q 1 ) (Q 2 ) through the resistor (R 1 ) and compare the DC voltage applied to the zener diode (ZD 1 ) The transistor Q 1 and Q 2 that are driven in reverse are configured to control the transistor Q 1 when the input voltage is applied at 220V and the transistor Q 2 when the voltage is applied at 100V.
그리고 트랜지스터(Q2)의 구동에 의하여 도통되는 트라이악(TD1)의 게이트(G)측은 트랜지스터(Q2)의 콜렉터측 저항(R2)을 통하여 연결 구성하여 트라이악 도통시에 배압정류가 부도통시에 반파정류가 되도록 2차측 트랜스(T2)에 다이오드(D2)(D3)(D4) 및 콘덴서(C2)(C3)를 연결 구성하여서 콘덴서(C2)(C3) 사이에 트라이악(TD1)의 출력이 인가되도록 구성하며 부하(Z)측에 일정한 정류전압이 인가되게 구성한 것이다.And the side of the gate (G) of the triac (TD 1) which is conductive by driving the transistor (Q 2) to configure connection through the transistor collector-side resistor (R 2) a (Q 2) is the back pressure rectification during triac conduction diodes in the secondary side transformer (T 2) so that the half-wave rectifying the default tongsi (D 2) (D 3) (D 4) and the capacitor (C 2) hayeoseo constituting the (C 3) connected to the capacitor (C 2) (C 3 It is configured to apply the output of the triac (TD 1 ) between) and is configured to apply a constant rectified voltage to the load (Z) side.
도면중 미설명부호 AC는 100V, 220V 겸용 입력전원 전압이고 V1은 100V 인가시 2차측 트랜스(T2)의 접점(a)(c)간의 유기전압, V2은 100V 인가시 콘덴서(C2및 C3)에 충전된 직류전압, V3은 100V 인가시 2차측 트랜스(T2)의 접점(a)(b)간의 직류전압, V1'는 220V 인가시 2차측 트랜스(T2)의 접점(a)(c)간의 유기전압, V2'는 220V 인가시 콘덴서(C2)(C3)에 충전된 직류전압, V3'는 220V 인가시 2차측 트랜스(T2)의 점(a)(b)간의 직류 전압이다.In the drawing, AC is 100V and 220V combined input power supply voltage, V 1 is the induced voltage between the contacts (a) and (c) of the secondary transformer (T 2 ) when 100V is applied, and V 2 is the capacitor (C 2) when 100V is applied. And DC voltage charged in C 3 ), V 3 is the DC voltage between the contacts (a) and (b) of the secondary transformer T 2 when 100 V is applied, and V 1 ′ is the voltage of the secondary transformer T 2 when 220 V is applied. The induced voltage between the contacts (a) and (c), V 2 'is the DC voltage charged in the capacitor (C 2 ) (C 3 ) when 220V is applied, and V 3 ' is the point of the secondary transformer (T 2 ) when 220V is applied ( a) DC voltage between (b).
이와 같이 구성된 본 고안에서 100V 입력전원 전압이 공급되었을 경우에는 1차측 트랜스(T1)에 교류전원이 유기되어 2차측 트랜스의 접점(a)(b)간에 각각 유기전압이 나타나게 되고 2차측 접점(a)(b)간의 유기전압이 다이오드(D1) 콘덴서(C1)에 의하여 정류된 직류전압(V3)이 제너다이오드(ZD1)의 캐소우드측에 인가된다.When the 100V input power voltage is supplied in the present invention configured as described above, AC power is induced to the primary transformer T 1 so that induced voltages appear between the contacts (a) and (b) of the secondary transformer. The DC voltage V 3 in which the induced voltage between a) and (b) is rectified by the diode D 1 capacitor C 1 is applied to the cathode side of the zener diode ZD 1 .
이 경우에 제너다이오드(ZD1)의 제너전압을 직류전압(V3)에 비하여 큰값으로 설정하면 이로 인하여 제너다이오드(ZD1)는 부도통 상태가 되며 트랜지스터(Q1)도 부도통 상태가 되어 저항(R1)을 통하여 접속된 트랜지스터(Q2)의 베이스측에는 직류 전압(V3)이 인가되어 트랜지스터(Q2)는 도통상태가 되고, 트랜지스터(Q2)의 콜렉터측에 접속된 저항(R2)을 통하여 트리거 전류가 게이트(G1)에 흘러 트라이악(TD1)은 턴온 상태가 된다.Setting the voltage of the zener diode (ZD 1) in this case as keungap than the DC voltage (V 3) because of this zener diode (ZD 1) is the default barrel state transistor (Q 1) also the default barrel status The direct current voltage V 3 is applied to the base side of the transistor Q 2 connected through the resistor R 1 , and the transistor Q 2 is brought into a conductive state, and the resistor (connected to the collector side of the transistor Q 2 ) The trigger current flows through the gate G 1 through R 2 ), and the triac TD 1 is turned on.
따라서 정(+)의 반주기 동안에는 2차측 트랜스(T2)의 접점(a)(c)간의 유기전압(V1)은 접점(C)-다이오드(D2)-콘덴서(C2)-트라이악(TD1)-접점(a)순으로 도통되어 콘덴서(C2)에는 접점(a)(c)간의 유기전압(V1)이 정류된 직류전압(V2/2)이 충전되고, 부(-)의 반주기 동안에는 접점(a)-트라이악(TD1)-콘덴서(C3)-다이오드(D3)-접점(C)순으로 도통되어 콘덴서(C3)에는 접점(a)(c)간의 유기전압(V1)이 정류된 직류전압(V2/2)이 충전되므로 정류된 전압단자(B+)와 접지(G)간의 직류전압은 콘덴서(C2)와 콘덴서(C3)에 각각 충전된 전압의 합으로서 V2가 되도록 동작하는 배압 정류회로이다.Therefore, during the positive half period, the induced voltage (V 1 ) between the contacts (a) and (c) of the secondary transformer (T 2 ) is the contact (C)-diode (D 2 )-capacitor (C 2 )-triac (TD 1) - the contact (a) the order of conduction to the capacitor (c 2), the contact point (a) (c) the induced voltage (V 1) is the rectified DC voltage (V 2/2) between the filled, part ( - triac (TD 1) - -) the contact (a) during a half period of the capacitor (C 3) - a diode (D 3) - contact (C) is the order conducting capacitor (C 3), the contact point (a) (c) Since the DC voltage (V 2/2 ) in which the induced voltage (V 1 ) is rectified is charged, the DC voltage between the rectified voltage terminal (B + ) and ground (G) is applied to the capacitor (C 2 ) and the capacitor (C 3 ). Sum of each charged voltage As the back pressure rectification circuit operating such that the V 2.
한편 220V 입력전원 전압이 공급되었을 경우에는 100V 입력전원 전압시보다 높은 전압이 2차측 트랜스의 접점(a)(c)간 및 (a)(b)간에 각각 유기되므로, 접점(a)(b)간의 유기전압이 다이오드(D1), 콘덴서(C1)에 의하여 정류된 직류전압(V3')이 제너다이오드(ZD1)의 캐소우드측에 인가된다.On the other hand, when the 220V input power supply voltage is supplied, a voltage higher than that of the 100V input power supply voltage is induced between the contacts (a) (c) and (a) (b) of the secondary transformer, respectively, so that the contacts (a) (b) The DC voltage V 3 ′ in which the induced voltage between the diodes is rectified by the diode D 1 and the capacitor C 1 is applied to the cathode side of the zener diode ZD 1 .
이 경우에 제너다이오드(ZD1)의 제너전압을 직류전압(V3')에 비하여 작은 값으로 설정하게 되면 이로 인하여 제너다이오드(ZD1)는 도통상태가 되므로서, 캐소우드측의 저항(R1) 및 에노우드측에 접속된 트랜지스터(Q1)가 도통상태가 되어, 트랜지스터(Q2)의 베이스측 전위가 0으로 되어 트랜지스터(Q2)는 부도통 상태로 되어 저항(R2)을 통하여 접속된 트라이악(TD1)도 부도통 상태가 된다.When the voltage of the zener diode (ZD 1) in this case set to a value smaller than the DC voltage (V 3 ') which due to the zener diode (ZD 1) is on, the resistance of the cathode side, because the conductive state (R 1) and the transistor (Q 1) is in a conductive state, the base-side electric potential of the transistor (Q 2) is to 0, the transistor (Q 2) is in default barrel-state resistance (R 2) connected to enoic wood side Triac TD 1 connected through is also in a non-conductive state.
따라서 정(+)반주기 동안에만 2차측 트랜스(T2)의 접점(a)(c)간의 유기전압(V1')은 접점(C)-다이오드(D2)-콘덴서(C2)-콘덴서(C3)-다이오드(D4)-접점(a)순서로 정류되어 충전된 직류전압(V2')을 얻을 수 있는 것이다.Therefore, the induced voltage (V 1 ') between the contacts (a) and (c) of the secondary transformer (T 2 ) only during the positive (+) period is the contact (C)-diode (D 2 )-capacitor (C 2 )-capacitor The rectified (C 3 ) -diode (D 4 ) -contact (a) sequence can obtain a charged DC voltage (V 2 ').
이상에서와 같이 본 고안은 2차측 트랜스의 중간탭에 구성된 정류회로에서 제너다이오드를 제어하여 상호 역구동하는 트랜지스터로 트라이악이 제어됨으로 2차측 트랜스에 연결된 다이오드와 콘덴서로 배압 정류회로 및 반파 정류회로를 구성시킬 수가 있어 100V, 220V 입력전압에 관계없이 항상 일정한 정류전압을 공급시킬 수 있는 효과가 있으며 종래의 경우와 같이 전원공급용 트랜스를 사용하고 수개의 트라이악 및 이를 제어시킬 수 있는 트랜지스터를 별도로 구성시킬 필요가 없어 원가상승의 절감 및 오동작을 방지할 수 있는 전원전압 자동절환회로를 제공할 수가 있는 것이다.As described above, the present invention controls the Zener diode in the rectifier circuit configured at the middle tap of the secondary side transformer, and the triac is controlled by mutually driving the reverse voltage. It can be configured to supply constant rectified voltage at all times regardless of input voltage of 100V, 220V, and use a power supply transformer as in the conventional case, and several triacs and a transistor that can control it separately. Since there is no need to configure, it is possible to provide a power supply automatic switching circuit that can reduce cost increase and prevent malfunction.
Claims (1)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR2019840012027U KR870001201Y1 (en) | 1984-11-21 | 1984-11-21 | Power circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR2019840012027U KR870001201Y1 (en) | 1984-11-21 | 1984-11-21 | Power circuit |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| KR860006799U KR860006799U (en) | 1986-06-25 |
| KR870001201Y1 true KR870001201Y1 (en) | 1987-03-27 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| KR2019840012027U KR870001201Y1 (en) | 1984-11-21 | 1984-11-21 | Power circuit |
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| Country | Link |
|---|---|
| KR (1) | KR870001201Y1 (en) |
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1984
- 1984-11-21 KR KR2019840012027U patent/KR870001201Y1/en not_active IP Right Cessation
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| Publication number | Publication date |
|---|---|
| KR860006799U (en) | 1986-06-25 |
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