KR850002207Y1 - Power circuit - Google Patents

Power circuit Download PDF

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Publication number
KR850002207Y1
KR850002207Y1 KR2019830011461U KR830011461U KR850002207Y1 KR 850002207 Y1 KR850002207 Y1 KR 850002207Y1 KR 2019830011461 U KR2019830011461 U KR 2019830011461U KR 830011461 U KR830011461 U KR 830011461U KR 850002207 Y1 KR850002207 Y1 KR 850002207Y1
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South Korea
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voltage
diode
circuit
input
capacitor
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KR2019830011461U
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Korean (ko)
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KR850005483U (en
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이태수
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주식회사금성사
허신구
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Priority to KR2019830011461U priority Critical patent/KR850002207Y1/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
    • H02M7/00Conversion of ac power input into dc power output; Conversion of dc power input into ac power output
    • H02M7/02Conversion of ac power input into dc power output without possibility of reversal
    • H02M7/04Conversion of ac power input into dc power output without possibility of reversal by static converters
    • H02M7/12Conversion of ac power input into dc power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode
    • H02M7/145Conversion of ac power input into dc power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a thyratron or thyristor type requiring extinguishing means
    • 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
    • H02M1/10Arrangements incorporating converting means for enabling loads to be operated at will from different kinds of power supplies, e.g. from ac or dc

Abstract

내용 없음.No content.

Description

자동전압 절환회로Automatic voltage switching circuit
제 1도는 종래의 배전압 회로도.1 is a conventional double voltage circuit diagram.
제 2도는 본 고안의 전체 회로도.2 is an overall circuit diagram of the present invention.
제 3도는 본 고안의 제어부 세부 회로도.3 is a detailed circuit diagram of the control unit of the present invention.
* 도면의 주요 부분에 대한 부호의 설명* Explanation of symbols for the main parts of the drawings
D2(D3,D4,D5: 다이오드 D6:제너라이오드D 2 (D 3 , D 4 , D 5 : Diode D 6 : Generiode
C1,C2,C3,C4: 콘덴서 R1,R2,R4: 저항C 1 , C 2 , C 3 , C 4 : Condenser R 1 , R 2 , R 4 : Resistance
TR : 스위칭 트랜지스터 B : 제어회로부TR: switching transistor B: control circuit
본 고안은 입력전압의 전압치에 따라 배압정류와 반파 정류를 절환시켜 주어 정류된 전압 변동분을 2배정도로 낮출수 있도록 가하 여전기기등의 정전압회로의 구성을 간편하게 할수 있도록한 자동전압 절환회로에 관한 것이다.The present invention relates to an automatic voltage switching circuit which switches back voltage rectification and half wave rectification according to the voltage value of an input voltage, and applies the voltage change to reduce the rectified voltage fluctuation by about twice. will be.
일반적으로, 텔레비젼 혹은 앰프등에는 회로의 능동소자, 브라운관, 스피커 등을 구동시키기 위해 직류 전원 공급을 위한 전원회로가 사용되는데, 110V 220V 양교류 전원을 사용하는 지역에서는 교류 입력 전압을 전압절환 없이 정류하여 사용하게 될 경우 정류된 직류전압은 여유 동작분을 포함하여 3배이상의 큰전압의 변동이 생기게 되므로 정전압회로를 구성활 경우 상당한 손실을 초래하게 되는 문제점이 있었다. 본 고안은 종래 이와같은 문제점을 해소하기 위하여 교류입력단의 전압이 일정치 이상이 될때에는 배압 정류회로로 절환되고 교류입력단의 전압이 일정치 이하가 될때에는 반파정류 회로로 절환되게 하여 정류된 전압 변동분을 2배 정도로 낮추게 되어 후단에 보다 안정되고 동작 범위가 넓은 간단한 회로 구성의 정전압 회로를 구성할 수 있도록 한것으로, 이를 첨부한 도면에 의하여 상세히 설명하면 다음과 같다.Generally, a power supply circuit for supplying DC power is used to drive an active element of a circuit, a cathode ray tube, a speaker, etc. in a TV or an amplifier. In an area using a 110V 220V bi-AC power supply, the AC input voltage is rectified without voltage switching. When used, the rectified DC voltage causes a large voltage variation of three times or more, including a spare operation, resulting in a significant loss when the constant voltage circuit is configured. In order to solve such a problem in the related art, the voltage variation of the rectified voltage is switched to the back-pressure rectifier circuit when the voltage of the AC input terminal becomes higher than a predetermined value, and to the half-wave rectifier circuit when the voltage of the AC input terminal becomes lower than the predetermined value. It is to be reduced to about 2 times to configure a constant voltage circuit of a simple circuit configuration in a more stable and wide operating range in the rear stage, which will be described in detail by the accompanying drawings as follows.
먼저 제 1도는 다이오드(D1)(D2) 및 콘덴서(C1),(C2)로 구성되는 공지한 정류회로를 도시한 것이며 제 2도는 본고안의 전체 회로 구성도로서, 제 1도의 다이오드(D1) 대신에 다이리스터(TH1)을 접속연결하고 콘덴서(C1)과 병열로 순방향 다이오드(D3)를 역방향으로 접속연결하고 상기 다이리스터(TH1)의 게이트에는 다이리스터(TH1) 제어회로부(B)를 접속 연결한다. 제어회로부(B)는 제 3도에 도시된 바와같이 교류입력(L1)(L2)측에 반파정류 다이오드(D4)를 접속하면, 이에 저항(R1)(R2)(R3), 다이오드(D5) 및 콘덴서(C3)(C4)로 구성된 다이리스터(TH) 트리거 신호 발생회로(B1)를 접속하고, 저항(R1)(R2) 사이에는 저항(R4)(R5) 제너다이오드(D6) 저항(R6) 및트랜지스터(TR)로 구성된 차단회로(B2)를 접속시켜 구성하여, 교류입력 전압이 140V 이상이 될때 제저다이오드(D6)가 항복 전압에 도달하여 제너 전류를 흐르게 하여 트랜지스터(TR)을 도통시킴으로서 저항(R1)(R2) 사이를 단락 시킴으로서 다이리스터(TH)트리거 신호가 나타나지 않게 하고, 교류 입력 전압이 140V이하일 때에는 트랜지스터(TR)이 차단되게 하여 저항(R1)(R2)(R3) 및 다이오드(D5), 콘덴서(C3)(C4)로 구성된 다이리스터(TH)트리거 신호 발생회로(B1)에 의하여 다이리스터(TH)가 트리거 되게 구성한다.First, FIG. 1 shows a well-known rectification circuit composed of a diode D 1 (D 2 ), and a capacitor C 1 , (C 2 ). FIG. 2 is an overall circuit diagram of the present invention, and the diode of FIG. Instead of (D 1 ), the thyristor (TH 1 ) is connected and connected in parallel with the capacitor (C 1 ) and the forward diode (D 3 ) is connected in the reverse direction, and the thyristor (TH 1 ) is connected to the gate of the thyristor (TH 1 ). 1 ) Connect the control circuit part (B). The control circuit (B) is the AC input, as illustrated in FIG. 3 (L 1) (L 2) by connecting the half-wave rectifying diode (D 4) on the side, this resistance (R 1) (R 2) (R 3 ), A thyristor (TH) trigger signal generation circuit (B 1 ) consisting of a diode (D 5 ) and a capacitor (C 3 ) (C 4 ) is connected, and a resistor (R 1 ) between the resistors (R 1 ) (R 2 ). 4 ) (R 5 ) Zener diode (D 6 ) The resistor circuit (R 6 ) and the transistor (TR) are connected to each other to form a circuit (B 2 ), and when the AC input voltage is 140V or more, the zeodiode diode (D 6 ) Reaches the breakdown voltage and flows a zener current to conduct the transistor TR to short-circuit between the resistors R 1 and R 2 so that the thyristor trigger signal does not appear and when the AC input voltage is 140V or less. A transistor (TH) trigger signal generation circuit composed of a resistor (R 1 ) (R 2 ) (R 3 ) and a diode (D 5 ) and a capacitor (C 3 ) (C 4 ) so that the transistor TR is blocked ( B 1 ) is configured to trigger the thyristor (TH).
이와같이 구성된 본고안은 기준 교류입력 전압 140V를 기준으로 그동작 상태를 설명하면, 먼저 교류입력단(L1)(L2)의 입력전압이 140V 이하일 때에는 다이오드(D4)를 통하여 반파정류되어 맥류전압을 만드는데 이때 교류입력 전압은 140V 이하 이어서 제너다이오드(D6)의 항복전압에 도달하지 않게 되어 제어 회로부(B)의 차단회로(B2)는 동작하지 않게 되고 이에 따라 다이오드(D3)의 맥류전압은 저항(R1),(R2). 콘덴서(C3) 및 다이오드(D5), 저항(R3), 콘덴서(C4)에 의하여 전압이 평활, 분할되어 다이리스터(TH)의 게이트를 트르거시켜 도통시켜주게 된다. 또한 교류입력 전압이 140V 이상일 때에는 다이오드(D4)를 통한 반파정류된 맥류전압이 제너다이오드(D6)의 항복 전압에 도달하여 트랜지스터(TR)가 도통하게됨으로서 저항(R1)과 (R2)사이가 단락되어 다이리스터(TH) 트리거 신호가 나타나지 않게 되는 것이다. 이와같이 교류입력 전압이 140V 이하가 되어 다이리스터(TH) 트리거 신호가 나타나지 않게 되는 것이다. 이와같이 교류입력 전압이 140V 이하가 되어 다이리스터(TH)가 도통(ON) 상태에 있을 때에는 교류입력단(L1)(L2)에는 교류전압의 실효치(V1)이 입력되고 그중 교류입력단(L1)에 교류의 하반부가 입력 되었을 경우에는 교류입력단(L1)-콘덴서(C1)-다이리스터(TH)-교류입력단(L2)의 경로를 통해 전류가 흘러 콘덴서(C1)에는V1값의 정류전압이 충전되게 되고 교류의 상반부가 교류입력단(L2)를 통하여 입력되면 교류입력단(L2)-다이오드(D2)-콘덴서(C2)-콘덴서(C1)-교류입력단(L1)의 경로를 통해 전류가 흘러 콘덴서(3)에 정류전압이 충전되는데 이때 콘덴서(C1)에 충전되어 있던 전위V1은 극성상으로 볼때 다이오드(D2)에 순방향으로 가해짐으로서 결국 콘덴서(C2)에는 (V1)+(콘덴서(C1)의 충전전압V1) 즉 2V1의 정류 전압이 충전되어 배압 정류의 전압이 얻어지게 된다. 한편 교류 입력 전압이 140V 이상이 될때에는 제어회로부(B)로부터 트리거 신호가 나타나지 않아 다이리스터(TH)가 동작하지 않으며, 이때에는 교류입력단(L1)을 통한 교류 입력파형의 하반부가 입력되었을 경우 다이리스터(TH)는 오프되어 있으므로 콘덴서(C1)의 충전경로는 차단되어 충전되지 않으며 이때 콘덴서(C1)의 충전전압이 없으므로 이의 양단에 역방향으로 접속연결된 다이오드(D3)는 교류입력 파형의 상반부 입력시에는 순방향으로 동작할 수 있는 조건이 된다. 따라서 교류입력파형의 상반부가 교류입력단(L2)를 통하여 입력됐을때 다이오드(D2)-콘덴서(D3)-다이오드(C2)-교류입력단(L1)의 경로를 통해 콘덴서(C2)에는V1의 정류전압이 충전되게 됨으로서 반파정류 전압을 얻을 수 있게 되는 것이다. 이와같이 본고안은 배압 정류 회로의 다이리스터를 입력교류 전압이 일정전압(140V)이하일 때에는 도통시켜 배압정류 전압을 얻어내고 일정전압 이상일 때에는 차단시켜 반파정류 전압을 얻을 수 있게되어 이의 후단에 보다 안정되고 동작 범위가 넓은 정전압회로를 구성할 수 있는 매우 유용한 고안인 것이다.The present invention configured as described above describes the operation state based on the reference AC input voltage 140V. First, when the input voltage of the AC input terminals L 1 and L 2 is 140 V or less, it is half-wave rectified through the diode D 4 to form a pulse voltage. At this time, the AC input voltage is 140V or less, so that the breakdown voltage of the zener diode (D 6 ) is not reached, so that the blocking circuit (B 2 ) of the control circuit part (B) does not operate and accordingly, the pulse of the diode (D 3 ) Voltages are resistors (R 1 ), (R 2 ). The voltage is smoothed and divided by the capacitor C 3 , the diode D 5 , the resistor R 3 , and the capacitor C 4 so as to trigger and conduct the gate of the thyristor TH. In addition, when the AC input voltage is 140V or more, the half-wave rectified pulsation voltage through the diode D 4 reaches the breakdown voltage of the zener diode D 6 , so that the transistor TR conducts, so that the resistor R 1 and R 2 ), The thyristor (TH) trigger signal does not appear. As such, the AC input voltage becomes 140 V or less, so that the thyristor (TH) trigger signal does not appear. In this way, when the AC input voltage is 140 V or less and the thyristor TH is in the ON state, the effective value V 1 of the AC voltage is input to the AC input terminal L 1 (L 2 ), among which the AC input terminal L 1 ) When the lower half of the AC is inputted, current flows through the path of the AC input terminal (L 1 ) -capacitor (C 1 ) -dyristor (TH) -AC input terminal (L 2 ) to the condenser (C 1 ). When presented in the V 1 value of the rectified voltage is charged and the upper half of the AC input from the AC input (L 2) AC input (L 2) - a diode (D 2) - capacitor (C 2) - capacitor (C 1) - exchanges A current flows through the path of the input terminal L 1 to charge the rectified voltage in the capacitor 3, at which time the electric potential charged in the capacitor C 1 is charged. V 1 is pos onto polarity diode end the capacitor as a load is applied in the forward direction to the (D 2) (C 2), the ( V 1 ) + (Charge voltage of capacitor (C 1 ) V 1 ) i.e. 2 The rectified voltage of V 1 is charged to obtain the voltage of the back pressure rectified. On the other hand, when the AC input voltage is 140V or more, the trigger signal does not appear from the control circuit part B, and thus the thyristor TH does not operate. In this case, when the lower half of the AC input waveform through the AC input terminal L 1 is input. Since the thyristor (TH) is off, the charging path of the capacitor (C 1 ) is blocked and not charged. At this time, since there is no charging voltage of the capacitor (C 1 ), the diode (D 3 ) connected in opposite directions at both ends thereof has an AC input waveform. When inputting the upper half of, it is a condition to operate in forward direction. Therefore, when the upper half of the AC input waveform would have been inputted through the AC input (L 2) the diode (D 2) - capacitor (D 3) - diode (C 2) - the condenser via a path of the AC input terminals (L 1) (C 2 ) As the rectified voltage of V 1 is charged, a half-wave rectified voltage can be obtained. In this way, this proposal conducts the thyristor of the back-pressure rectifier circuit when the input alternating voltage is below the constant voltage (140V) to obtain the back-voltage rectified voltage, and cuts off when it exceeds the constant voltage to obtain the half-wave rectified voltage. It is a very useful design to construct a constant voltage circuit with a wide operating range.

Claims (1)

  1. 다이오드(D1)(D2), 콘덴서(C1)(C2)로 구성된 공지한 배전압 정류회로의 다이오드(D1) 위치에 다이리스터(TH)를 접속연결하고, 콘덴서(C1) 양단에 다이오드(D3)를 역방향으로 접속연결하여 다이리스터(TH)의 게이트 단자(G)에는 다이오드(D4)를 통해 저항(R1)(R2)(R3) 다이오드(D5) 및 콘덴서(C3)(C4)로 구성된 싸이리스터트리거회로(B1)와 저항(R4)(R5)(R6), 제너라이오드(D6) 및 트랜지스터(TR)로 구성된 차단회로(B2)로 구성되는 제어회로부(B)를 접속연결하여서된 자동전압절환 회로,The thyristor TH is connected to the diode D 1 of a known double voltage rectifier circuit composed of a diode D 1 (D 2 ) and a capacitor C 1 (C 2 ), and the capacitor C 1 is connected. by reverse-up connection to the diode (D 3) to both ends of the resistance through the gate terminal (G), the diode (D 4) of the thyristor (TH) (R 1) ( R 2) (R 3) a diode (D 5) And a thyristor trigger circuit (B 1 ) composed of a capacitor (C 3 ) (C 4 ) and a block composed of a resistor (R 4 ) (R 5 ) (R 6 ), a Zener diode (D 6 ), and a transistor (TR). Automatic voltage switching circuit connected by connecting the control circuit section (B) consisting of a circuit (B 2 ),
KR2019830011461U 1983-12-31 1983-12-31 Power circuit KR850002207Y1 (en)

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KR2019830011461U KR850002207Y1 (en) 1983-12-31 1983-12-31 Power circuit

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KR850005483U KR850005483U (en) 1985-08-10
KR850002207Y1 true KR850002207Y1 (en) 1985-10-07

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KR2019830011461U KR850002207Y1 (en) 1983-12-31 1983-12-31 Power circuit

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