KR890000847Y1 - Motor switching circuit - Google Patents
Motor switching circuit Download PDFInfo
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- KR890000847Y1 KR890000847Y1 KR2019860001742U KR860001742U KR890000847Y1 KR 890000847 Y1 KR890000847 Y1 KR 890000847Y1 KR 2019860001742 U KR2019860001742 U KR 2019860001742U KR 860001742 U KR860001742 U KR 860001742U KR 890000847 Y1 KR890000847 Y1 KR 890000847Y1
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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
- H02M3/00—Conversion of dc power input into dc power output
- H02M3/22—Conversion of dc power input into dc power output with intermediate conversion into ac
- H02M3/24—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters
- H02M3/28—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac
- H02M3/325—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac using devices of a triode or a transistor type requiring continuous application of a control signal
- H02M3/335—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac using devices of a triode or a transistor type requiring continuous application of a control signal using semiconductor devices only
- H02M3/33569—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac using devices of a triode or a transistor type requiring continuous application of a control signal using semiconductor devices only having several active switching elements
- H02M3/33576—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac using devices of a triode or a transistor type requiring continuous application of a control signal using semiconductor devices only having several active switching elements having at least one active switching element at the secondary side of an isolation transformer
- H02M3/33592—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac using devices of a triode or a transistor type requiring continuous application of a control signal using semiconductor devices only having several active switching elements having at least one active switching element at the secondary side of an isolation transformer having a synchronous rectifier circuit or a synchronous freewheeling circuit at the secondary side of an isolation transformer
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Dc-Dc Converters (AREA)
Abstract
내용 없음.No content.
Description
제1도는 본 고안의 회로도.1 is a circuit diagram of the present invention.
제2도는 본 고안 회로도의 각부 파형도.2 is a waveform diagram of each part of the present invention circuit diagram.
* 도면의 주요부분에 대한 부호의 설명* Explanation of symbols for main parts of the drawings
D1, D2: 다이오드 C1, C2, C3: 콘덴서D 1 , D 2 : Diode C 1 , C 2 , C 3 : Condenser
Q1, Q2: 트랜지스터 T : 트랜스Q 1 , Q 2 : Transistor T: Trans
1, 2, 3 : 출력단자 CdS : 수광소자1, 2, 3: Output terminal CdS: Light receiving element
ZD : 제너다이오드 LED : 발광다이오드ZD: Zener Diode LED: Light Emitting Diode
본 고안은 트랜스의 스위칭 주기중 도통 시간을 출력전압에 따라 변화되게 함으로써 안정된 출력을 얻기 위한 모우터의 스위칭 전원 회로에 관한 것이다.The present invention relates to a switching power supply circuit of a motor for obtaining a stable output by changing the conduction time according to the output voltage during the switching cycle of the transformer.
전원의 최대출력 전류를 높게하거나 전원의 출력수를 다수개로 하여 모우터의 출력을 제어하고자 할때에는 전원측에서 소비되는 손실과 트랜스를 소형으로 하기 위하여는 스위칭 전원회로를 많이 사용하고 있는 실정이었다.In order to control the output of the motor by increasing the maximum output current of the power supply or by increasing the number of outputs of the power supply, the switching power supply circuit was often used to reduce the loss and the transformer consumed on the power supply side.
그러나 종래의 스위칭 전원회로는 부하의 변동에 따라 출력측 전압이 변동되므로 출력전압이 상술할 때에 스위칭 상태가 불안정하게 되는 경우가 발생되어 트랜스의 출력전압에 악영향이 미치는 동시에 전원 노이즈가 발생되는 주원이 되는 것이었다.However, in the conventional switching power supply circuit, the output voltage varies according to the load variation, so that the switching state becomes unstable when the output voltage is detailed, which adversely affects the output voltage of the transformer and becomes a main source of power noise. Was.
본 고안은 이와 같은 점을 감안하여 트랜스의 스위칭 주기중 도통 시간을 출력 전압의 변동에 따라 변하도록 함으로써 안정된 출력을 얻을 수 있게하는 동시에 부하가 변동된다하여도 스위칭 상태를 안정되게 한 모우터의 스위칭 전원회로를 제공하고자 하는 것으로 트랜스 1차측에 스위칭 트랜지스터를 제어하는 제어용 트랜지스터가 수광소자의 상태신호에 따라 구동되게 구성시키고 트랜스 2차측의 출력을 정류시켜 제너다이오드의 설정전압 이상일때에는 발광다이오드가 점등되게 구성함으로써 출력측 전압에 따라 스위칭 되는 시간이 가변되게 구성한 것이다.In view of the above, the present invention makes it possible to obtain a stable output by changing the conduction time during the switching cycle of the transformer according to the variation of the output voltage, and at the same time, the switching of the motor which stabilizes the switching state even if the load is changed. In order to provide a power supply circuit, a control transistor for controlling a switching transistor on a transformer primary side is configured to be driven according to a state signal of a light receiving element, and the output of the transformer secondary side is rectified so that the light emitting diode is turned on when the zener diode exceeds the set voltage. By configuring, the switching time varies according to the output voltage.
이를 첨부도면에 의하여 상세히 설명하면 다음과 같다.When described in detail by the accompanying drawings as follows.
제1도는 본 고안의 회로도로서 전원(V+)이 저항(R1)을 통하여 스위칭 트랜지스터(Q2)의 베이스측에 인가되게 구성시키고 그 콜렉터측에는 다이오드(D3)와 써어지흡수소자(N1)가 연결된 것에 병령로 트랜스(T)의 1차측을 연결 구성시키며 에미터측에는 트랜스(T)이 1차측에서 다이오드(D4) 및 콘덴서(C2)를 정류된 전원(B+)이 출력되게 구성시킨 후 에미터측 전원이 저항(R2) 및 콘데너서(C1)를 통하여 베이스축으로 정궤환되게 구성시킨다.FIG. 1 is a circuit diagram of the present invention, and the power supply V + is configured to be applied to the base side of the switching transistor Q 2 through the resistor R 1 , and the diode D 3 and the surge absorbing element N at the collector side thereof. 1 ) The primary side of the transformer (T) is connected to the connected one, and the power source (B + ) in which the transformer (T) rectifies the diode (D 4 ) and the capacitor (C 2 ) at the primary side is output to the emitter side. After configuration, the emitter side power is configured to be positively fed back to the base shaft through the resistor R 2 and the condenser C 1 .
그리고 트랜지스터(Q2)의 구동을 제어하는 트랜지스터(Q1)의 베이스측에는 수광소자(CdS)를 통하여 흐르는 전원(B+)이 일측으로 콘덴서(C2)에 충전되게 구성시키며 타측으로 다이오드(D1)를 통하여 트랜지스터(Q2)의 베이스측에 인가되게 구성시키고 트랜스(T)의 2차측에는 각각 다이오드(D6-D11) 및 콘덴서(C6-C11)를 통하여 정류된 전원이 출력단자(1)……(11)로 출력되게 구성시키며 다이오드(D5) 및 콘덴서(C3)를 통하여 정류된 전원은 제너다이오드(ZD)에 인가되게 구성시켜 설정된 정원이상 인가되면 발광다이오드(LED)가 점등되게 구성한 것이다.On the base side of the transistor Q 1 controlling the driving of the transistor Q 2 , the power B + flowing through the light receiving element CdS is configured to be charged to the capacitor C 2 on one side and the diode D on the other side. 1 ) is applied to the base side of the transistor (Q 2 ) and the rectified power through the diode (D 6 -D 11 ) and the capacitor (C 6 -C 11 ) is output to the secondary side of the transformer (T), respectively. Terminal 1... … The power source rectified through the diode (D 5 ) and the capacitor (C 3 ) is configured to be applied to the zener diode (ZD), and the light emitting diode (LED) is turned on when applied to the zener diode (ZD). .
여기서 다이오드(D2)는 역방향 저지용이고 발광다이오드(LED)의 점등시 수광소자(CdS)는 저항치가 적어지게 되어 전원(B+)이 쉽게 흐르게 되게 구성한 것이다.Here, the diode D 2 is for reverse blocking, and the light receiving device CdS has a low resistance when the light emitting diode LED is turned on so that the power source B + flows easily.
이와같이 구성된 본 고안에서 전원(V+)이 투입되면 저항(R1)을 통하여 바이어스 전원이 트랜지스터(Q2)의 베이스측으로 인가되어 트랜지스터(Q2)가 도통하면서 에미터측에 연결된 저항(R2) 및 콘덴서(C1)를 통하여 정궤환되므로 트랜지스터(Q2)는 계속 도통되면서 트랜스(T)를 스위칭하게 된다.Thus configured when in the present design power (V +) the input resistance resistance applied is while the transistor (Q 2) the conduction is connected to the emitter teocheuk (R 1) toward the base of the bias power supply transistor (Q 2) via a (R 2) And since the positive feedback through the capacitor (C 1 ) the transistor (Q 2 ) is to continue the conduction to switch the transformer (T).
따라서 트랜스(T)의 2차측 전압은 트랜지스터(Q2)의 도통시 트랜스(T)의 1차측에 전압에 따라 비례되어 유기되게 되며 각각 2차측에 유기된 전압(V3) (V4)……(V7)은 각각 다이오드(D6-D11)에서 정류되고 콘덴서(C6-C11)에서 리플이 제거된 후 출력단자(1) (2)……(11)로 정류된 직류 전압이 모우터와 연결된 각 스위칭 트랜지스터를 구동시켜(도시되지 아니함) 모우터를 회전시키게 되는 것으로 유기된 전압(V3)이 다이오드(D5) 및 콘덴서(C3)를 통하여 정류되어 제너다이오드(ZD)의 설정된 전압이상 유기되면 발광다이오드(LED)가 점등되게 된다. 이 점등된 발광신호는 수광소자(CdS)에 인가되므로 트랜지스터(Q2)가 정궤한 될때에 도통되는 시간을 제어할 수 있게 되는 것으로, 광소자(CdS)의 저항치가 낮아져 전류가 쉽게 흐르게 되므로 전원(B+)이 수광소자(CdS)를 통하여 직렬로 접속된 콘덴서(C2)에 급속히 충전되면서 트랜지스터(Q1)가 도통하게 된다.Therefore, the secondary voltage of the transformer T is induced in proportion to the voltage at the primary side of the transformer T when the transistor Q 2 conducts, and the voltages V 3 (V 4 )... … (V 7 ) are respectively rectified in the diodes (D 6 -D 11 ) and the ripples are removed in the capacitors (C 6 -C 11 ). … The DC voltage rectified by 11 drives each switching transistor connected to the motor (not shown) to rotate the motor so that the induced voltage V 3 is a diode D 5 and a capacitor C 3 . When the rectification is performed through the set voltage of the zener diode ZD, the light emitting diode LED is turned on. Since the light-emitting signal is applied to the light receiving element CdS, it is possible to control the conduction time when the transistor Q 2 is squared, and the resistance of the optical element CdS is lowered, so that current easily flows. The transistor Q 1 becomes conductive as (B + ) is rapidly charged in the capacitor C 2 connected in series via the light receiving element CdS.
따라서 트랜지스터(Q2)의 베이스측에 인가되는 전원(V+)은 트랜지스터(Q1)의 콜렉터측으로 흐르게 되므로 트랜지스터(Q2)는 차단되고, 콘덴서(C2)에 충전되 전원은 트랜지스터(Q1)로 급속방전을 하게되며 트랜지스터(Q2)의 차단상태에서 트랜스(T)에 유기되는 각 전원은 차단 상태가 되어 발광다이오드(LED)가 소등되므로 다시 수광소자 (CdS)의 저항치가 증가되어 전원(B+)이 다시 흐르지 못하게 되므로 트랜지스터(Q1)는 차단상태가 되고, 전원(V+)이 다시 트랜지스터(Q2)를 도통시키면서 상기와 같은 스위칭 동작을 반복시키게 된다.Therefore, the power (V +) applied to the base side of the transistor (Q 2) is because the flow side to the collector of the transistor (Q 1) transistor (Q 2) is cut off, the capacitor being charged to a (C 2) power transistor (Q 1 ) rapid discharge, and each power induced in the transformer (T) in the cutoff state of the transistor (Q 2 ) is in the cutoff state and the light emitting diode (LED) is turned off, so the resistance of the light receiving element (CdS) is increased again. Since the power supply B + is not allowed to flow again, the transistor Q 1 is turned off, and the power supply V + is connected to the transistor Q 2 again to repeat the above switching operation.
즉, 트랜지스터(Q2)의 도통시간은 수광소자(CdS) 및 콘덴서(C2)의 시정수에 의하여 결정되는 것으로 출력측 발광다이오드(LED)의 점등에 따라 트랜지스터(Q1)가 도통되어 스위칭 되는 시간을 제어하게 되며 제2도의 (a)도와 같이 콘덴서(C2)가 충방전될때에 트랜지스터(Q1)의 베이스와 에미터측에 전압(VBE)이 유기하게 된다.That is, the conduction time of the transistor Q 2 is determined by the time constants of the light receiving element CdS and the condenser C 2. The transistor Q 1 is turned on and switched according to the lighting of the light emitting diode LED. As shown in FIG. 2A, when the capacitor C 2 is charged and discharged, the voltage VBE is induced at the base and emitter side of the transistor Q 1 .
그리고 콘덴서(C2)에 충전될때에 다이오드(D1)를 통하여 트랜지스터(Q2)의 베이스측에는 제2도의 (b)도와 같은 바이어스 전압이 유기되므로 트랜지스터(Q2)의 콜렉터측은 제2도의 (c)와 같은 출력이 발생되고 이 전압에 따라 트랜스(T)의 2차측으로 스위칭된 전압이 공급되게 되는 것이다.And the capacitor a second-degree (C 2) side of the base of the diode (D 1) the transistor (Q 2) through the when filled in (b) since the bias voltage, such as to help the organic side of the collector of the transistor (Q 2) the second degree ( An output such as c) is generated and the voltage switched to the secondary side of the transformer T is supplied according to this voltage.
이상에서와 같이 본 고안은 스위칭 트랜지스터의 도통시간을 출력측에 설정된 제너 전압이상일때 발광다이오드가 점등되게 하여 수광소자(CdS)와 연결된 충방전 콘덴서(C2)의 시정수로 조정하도록 함으로써 출력전압에 따라 스위칭 시간이 변동되게 하여 안정된 출력을 얻을 수 있는 효과가 있는 것이다.As described above, according to the present invention, the light emitting diode is turned on when the conduction time of the switching transistor is equal to or greater than the zener voltage set on the output side, so that it is adjusted to the time constant of the charge / discharge capacitor C 2 connected to the light receiving element CdS. Therefore, the switching time is fluctuated so that a stable output can be obtained.
Claims (1)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR2019860001742U KR890000847Y1 (en) | 1986-02-15 | 1986-02-15 | Motor switching circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR2019860001742U KR890000847Y1 (en) | 1986-02-15 | 1986-02-15 | Motor switching circuit |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| KR870013979U KR870013979U (en) | 1987-09-11 |
| KR890000847Y1 true KR890000847Y1 (en) | 1989-03-25 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| KR2019860001742U KR890000847Y1 (en) | 1986-02-15 | 1986-02-15 | Motor switching circuit |
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| KR (1) | KR890000847Y1 (en) |
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1986
- 1986-02-15 KR KR2019860001742U patent/KR890000847Y1/en not_active IP Right Cessation
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| KR870013979U (en) | 1987-09-11 |
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