KR880003044Y1 - Power circuit - Google Patents
Power circuit Download PDFInfo
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- KR880003044Y1 KR880003044Y1 KR2019850006419U KR850006419U KR880003044Y1 KR 880003044 Y1 KR880003044 Y1 KR 880003044Y1 KR 2019850006419 U KR2019850006419 U KR 2019850006419U KR 850006419 U KR850006419 U KR 850006419U KR 880003044 Y1 KR880003044 Y1 KR 880003044Y1
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Classifications
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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
- H02M7/00—Conversion of ac power input into dc power output; Conversion of dc power input into ac power output
- H02M7/02—Conversion of ac power input into dc power output without possibility of reversal
- H02M7/04—Conversion of ac power input into dc power output without possibility of reversal by static converters
- H02M7/12—Conversion 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
- H02M7/145—Conversion 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
- H02M7/155—Conversion 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 using semiconductor devices only
- H02M7/162—Conversion 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 using semiconductor devices only in a bridge configuration
- H02M7/1623—Conversion 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 using semiconductor devices only in a bridge configuration with control circuit
- H02M7/1626—Conversion 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 using semiconductor devices only in a bridge configuration with control circuit with automatic control of the output voltage or current
-
- 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
- H02M1/14—Arrangements for reducing ripples from dc input or output
- H02M1/143—Arrangements for reducing ripples from dc input or output using compensating arrangements
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Dc-Dc Converters (AREA)
Abstract
내용 없음.No content.
Description
도면은 본 고안의 회로도.The figure is a circuit diagram of the present invention.
* 도면의 주요 부분에 대한 부호의 설명* Explanation of symbols for the main parts of the drawings
AC : 교류입력전압 D1-D4 : 브리지 다이오드AC: AC input voltage D1-D4: Bridge diode
D5 : 다이오드 PPR : 피피알D5: Diode PPR: PPI
R1-R5 : 저항 R4 : 가변저항R1-R5: resistor R4: variable resistor
C1, C2, C3 : 전해 곤덴서 TR1, TR4 : 트랜지스터,C1, C2, C3: electrolytic capacitors TR1, TR4: transistors,
C4 : 마이카 콘덴서C4: mica condenser
본 고안은 교류 전압을 정류하여 일정한 직류전압을 공급하기 위한 직류 전력 공급장치에 관한 것이다.The present invention relates to a DC power supply for supplying a constant DC voltage by rectifying the AC voltage.
종래의 각종 직류 전력 공급장치는 단순히 교류 전원으로 부터 인가된 전압을 브리지 다이오드에 의해 정류하고 전해 콘덴서에 의해 여과하여 부하 소자 또는 부하회로에 공급하는 것으로 완전한 직류전원을 얻을 수 없었으며, 또한 입력 전압 변동 및 부하의 변동에 따라서 일정한 전압을 공급할 수 없기 때문에 정밀한 제어장치의 직류 전력 공급장치로 사용할 경우 그 제어장치가 오동작하게 되는 문제점이 있었다.Conventional various DC power supplies have not been able to obtain a complete DC power supply by simply rectifying the voltage applied from AC power by a bridge diode, filtering it by an electrolytic capacitor, and supplying it to a load element or a load circuit. There is a problem that the control device malfunctions when used as a DC power supply of the precise control device because it is unable to supply a constant voltage in accordance with the fluctuation and the load change.
따라서 본 고안은 이러한 종래의 결점을 해결하기 위해서 콘덴서 및 저항을 조합하여 고주파 잡음을 제거시키고 직류에 가까운 전원을 얻을 수 있으며, 트랜스포머의 2차측에 보상권선을 권취하고 피피알(PPR : Programmable Precision References )과 트랜스터 조합으로 입력 교류 전압과 부하에 의한 전압 변동에 따라 출력 전압이 변동되지 않고 항상 일정한 직류 전압을 공급할 수 있고, 가변 저항을 피피알(PPR)의 케이트에 연결하여 출력전압을 가변시킴으로써 광범위하며 부하의 변동에 부합되는 직류 전원을 얻을 수 있도록 한 것이다.Therefore, the present invention eliminates high frequency noise and obtains a power supply close to direct current by combining a capacitor and a resistor in order to solve these conventional drawbacks, and winds a compensation winding on the secondary side of the transformer and allows the PPR (Programmable Precision References). ) And the transformer can supply a constant DC voltage without changing the output voltage according to the input AC voltage and the voltage change by the load.The output voltage is changed by connecting a variable resistor to the Kate of PPR. It is a wide range and it is possible to obtain a DC power supply that matches the load variation.
이하 본 고안을 첨부 도면에 따라서 상세히 설명한다.Hereinafter, the present invention will be described in detail with reference to the accompanying drawings.
전원스위치(TS) 접속하는 1차측 트랜스(T)에 대하여 2차측인 보상권선(a-a')은 다이오드(D5) 콘덴서(C1), 저항(R1)으로 구성하는 반파정류 회로를 트랜지스터(TR1)의 베이스 d점에 연결하고, 메인권선(b-b')은 브리지 다이오드(D1-D4)를 거쳐 콘덴서(C2), 마이카 콘덴서(C4) 저항(R2)의 필터를 통해 트랜지스터(TR1)의 콜랙터에 연결한 다음 트랜지스터(TR2)와 저항(R3)을 통해 가변저항(R4) 및 저항(R5)과 병렬로 접속된 콘덴서(C3)에 연결한다.The compensating winding (a-a '), which is the secondary side with respect to the primary transformer (T) connected to the power switch (TS), has a half-wave rectifier circuit composed of a diode (D 5 ) capacitor (C 1 ) and a resistor (R 1 ). point d connected to the base of the transistor (TR 1) and the main winding (b-b ') is a diode-bridge capacitor (C 2) through (d 1 -D 4), the mica capacitor (C 4) resistance (R 2) The capacitor C 3 is connected to the collector of the transistor TR 1 through a filter of and then connected in parallel with the variable resistor R 4 and the resistor R 5 through the transistor TR 2 and the resistor R 3 . ).
이어서 가변저항(R4)과 저항(R5)의 C점에서 피피알(PPR)의 케이트를 연결하고 d점과 접시 사이에 피피알(PPR)의 캐소드와 애노드를 접속하여 구성한다. 미설명 부호 AC는 입력 교류 전원, V0는 출력 직류 접압, F는 퓨즈이다.Subsequently, the PPI of the PPR is connected at the point C of the variable resistor R 4 and the resistor R 5 , and the cathode and the anode of the PPR are connected between the point d and the plate. Unmarked AC is input AC power, V 0 is output DC voltage, F is fuse.
이와 같이 구성된 본 고안의 동작을 살펴보면, 교류 전압이 스위치(TS)를 통하여 1차측 트랜스(T)에 인가되면, 2차측 권선(a-a'),(b-b) 단자에 권선비에 비례되는 전압이 유지되어(a-a') 단자인 보상회로의 전류는 다이오드(D5)에 의해 반파되어 콘덴서(C1)에 충전된 루 저항(R1)을 통해 방전되어짐으로서 여과된 전류가 d점인 트랜지스터(TR1)의 베이스에 인가된다.Referring to the operation of the present invention configured as described above, when an AC voltage is applied to the primary transformer T through the switch TS, a voltage proportional to the turns ratio is applied to the secondary windings a-a 'and (bb) terminals. The current of the compensating circuit held as a terminal (a-a ') is half-waved by the diode D 5 and discharged through the lu resistor R 1 charged in the capacitor C 1 so that the filtered current is d. Is applied to the base of TR 1 .
그러므로 트랜지스터(TR1)가 활성 상태로 되며, 한편(b-b') 단자의 브리지 다이오드(D1-D4)를 통해 콘덴서(C2)에 충전되고, 마이카 콘덴서(C4)와 저항(R2)에 의해 고역 여과되어, 전파 정류된 전류가 트랜지스터(TR1)의 콜랙터에서 에미터로 흐르게 되어 전류 증폭되고 트랜지스터(TR2)의 베이스를 거쳐 저항(R3)을 지나면 베이스와 에미터 사이에 바이어스 전압이 생겨 활성 상태에서 트랜지스터(TR2)가 동작하게 되어 가변저항(R4)과 저항(R5)의 양단에 전압이 나타나게 된다.Therefore, the transistor TR 1 becomes active and is charged to the capacitor C 2 via the bridge diodes D 1 -D 4 at the terminals (b-b '), and the mica capacitor C 4 and the resistor ( High-pass filtered by R 2 ), the full-wave rectified current flows from the collector of transistor TR 1 to the emitter, amplifies the current and passes through resistor R 3 through the base of transistor TR 2 , and then the base and the emitter. The bias voltage is generated between the transistors so that the transistor TR 2 operates in the active state, and a voltage appears between the variable resistor R 4 and the resistor R 5 .
이 출력 직류 전압은 가변저항(R4)의 조정에 의해 선택되며, 저항(R5)에 걸리는 전압이 피피알(PPR)의 게이트(G) 단자에 안가될때, 이 인가 전압(VAG)에 의해 피피알(PPR)의 마이너스 전류(IAK)가 조절되어서 트랜지스터(TR1) 베이스에 역 바이어스를 주어 전류의 증폭량을 조절시킨다.This output DC voltage is selected by the adjustment of the variable resistor R 4 , and when the voltage applied to the resistor R 5 does not reach the gate G terminal of the PPR, it is applied to this applied voltage V AG . As a result, the negative current I AK of the PPI is adjusted to give a reverse bias to the base of the transistor TR 1 to adjust the amplification amount of the current.
결국 트랜지스터(TR1),(TR2)의 증폭 및 스위칭에 의해 전류를 제어하게 끔 한다.As a result, the current is controlled by the amplification and switching of the transistors TR 1 and TR 2 .
따라서 입력 접압의 변동으로 기준 전압이 상승하면 출력 단자의 가변 저항(R4), 저항(R5)의 전압이 상승 하려고 할때 정상 출력 전압시 보다 상승된 전압이 저항(R5) 양단에 걸리어 피피알(PPR)의 케이트(G)와 애노드(A)양단의 전압이 증가된 만큼 피피알(PPR)의 애노드(a)와 캐소드(K)사이를 통과하는 마이너스 전류가 트랜지스터(TR1)의 베이스에 인가되어서 트랜지스터(TR1)의 콜랙터에서 에미터로의 전류를 증가된 만큼 감소시키게 되므로 결국 출력 양단은 정상시와 같게 된다.Therefore, when the reference voltage rises due to the change in the input voltage, when the voltage of the variable resistor (R 4 ) or the resistor (R 5 ) of the output terminal is about to increase, the voltage higher than the normal output voltage is applied across the resistor (R 5 ). The negative current passing between the anode (a) and the cathode (K) of the PPR (PPR) increases as the voltage across the gate (G) and the anode (A) of the rear PPI (transistor) is transistor (TR 1 ). Is applied to the base of the transistor TR 1 to decrease the current from the collector to the emitter by an increased amount, so that both ends of the output become normal.
한편, 입력 전압의 변동으로 기준 전압보다 감소하면, 출력 양단의 전압이 감소되려고 할때 저항(R5)의 양단 전압 즉, 피피알(PPR)의 VAG도 감소되어 결국 접지쪽의 마이너스 전류를 적게 제거하여 트랜지스터(TR1) 베이스의 바이어스 전류를 감소된 만큼 보상함으로써 트랜지스터(TR1)의 콜렉터에서 에미터로의 전류를 감소된 만큼 증가시켜 증폭하므로 출력 양단 전압은 항상 일정한 전압으로 유지된다.On the other hand, when the input voltage decreases from the reference voltage, when the voltage across the output is about to decrease, the voltage across the resistor (R 5 ), that is, V AG of PPR, also decreases, eventually reducing the negative current from the ground side. to less canceling transistor (TR 1) Since amplification is increased by the reduced current to the emitter by compensating as much as the reduction of the bias current of the base from the collector of the transistor (TR 1) output voltage across is always maintained at a constant voltage.
만약 출력측의 부하 변동에도 마찬가지로 출력 양단 전압이 변동하려고 하면 변동된 양 만큼 피피알(PPR)의 VAG전압이 증가 또는 감소되어 트랜지스터(TR1) 베이스의 상태를 변동시켜 전류를 제어한다.Similarly, if the voltage across the output attempts to fluctuate on the load variation of the output side, the V AG voltage of PPR increases or decreases by the changed amount to control the current by changing the state of the transistor TR 1 base.
본 고안은 효과는 입력 전원으로 부터 인가된 변동율이 심한 교류 전원을 피피알(PPR)에 의해서 일정한 직류 전압을 얻을 수 있도록 구성하였고 고속 스위칭의 특성을 가진 트랜지스터를 전류 증폭용 소자로 사용하였기 때문에 고응 답성을 지니면서 온도 변화에 따라서도 큰 영향을 끼지지 않는 잇점을 가지며, 고주파의 잡음을 제거하는 필터부를 개재함으로써 거의 직류 전압에 가까운 전원을 얻을 수 있어서 오디오, 마이콤 또는 일반 산업 제어기기의 직류 전원장치로써 널리 활용할 수 있고, 나아가서는 고 신뢰성의 제품을 제작할 수 있기 때문에 구매 의욕을 증대시킬 수 있다.The effect of the present invention is that AC power applied from the input power source is highly variable, so that the constant DC voltage can be obtained by PPR, and the transistor with fast switching characteristics is used as the current amplification device. It has the advantage that it does not have a big influence even with temperature change, and it is possible to obtain a power supply close to DC voltage through the filter part which removes high frequency noise, so that DC power supply of audio, microcomputer or general industrial controller It can be widely used as a device, and furthermore, since it can manufacture a highly reliable product, it can raise a purchase motivation.
Claims (1)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR2019850006419U KR880003044Y1 (en) | 1985-05-30 | 1985-05-30 | Power circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR2019850006419U KR880003044Y1 (en) | 1985-05-30 | 1985-05-30 | Power circuit |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| KR860015446U KR860015446U (en) | 1986-12-30 |
| KR880003044Y1 true KR880003044Y1 (en) | 1988-08-31 |
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ID=19242557
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| KR2019850006419U KR880003044Y1 (en) | 1985-05-30 | 1985-05-30 | Power circuit |
Country Status (1)
| Country | Link |
|---|---|
| KR (1) | KR880003044Y1 (en) |
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1985
- 1985-05-30 KR KR2019850006419U patent/KR880003044Y1/en not_active IP Right Cessation
Also Published As
| Publication number | Publication date |
|---|---|
| KR860015446U (en) | 1986-12-30 |
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