CN101567631A - Wide voltage self-excited switching power supply - Google Patents
Wide voltage self-excited switching power supply Download PDFInfo
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- CN101567631A CN101567631A CNA2009100329709A CN200910032970A CN101567631A CN 101567631 A CN101567631 A CN 101567631A CN A2009100329709 A CNA2009100329709 A CN A2009100329709A CN 200910032970 A CN200910032970 A CN 200910032970A CN 101567631 A CN101567631 A CN 101567631A
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Abstract
The invention discloses a wide voltage self-excited switching power supply, which comprises five diodes from the first diode to the fifth diode, four triodes from the first triode to the fourth triode, eleven resistors from the first resistor to the eleventh resistor, a first electrolytic capacitor, a second electrolytic capacitor, six capacitors from the first capacitor to the sixth capacitor, a power supply terminal, a three-terminal voltage regulator tube, a transformer and an optical coupler. The wide voltage self-excited switching power supply has strong universality and can satisfy works with power supply modes of standby power with different voltage classes.
Description
Technical field
Invention relates to a kind of wide voltage self-excited switching power supply, belongs to the technical field of self-activated switch power supply.
Background technology
Switching Power Supply is widely used in present electronic product; but general direct current input range is 120～380V DC; but in high-power EPS; often can use with the battery in the ups power is the DC power supply of power backup; general stand-by power supply battery is elected 12V*18 joint=216V or 12V*41 joint=492V as; therefore general Switching Power Supply can't adapt to the requirement of this equipment, and designing a kind of new input power range in this case is 120～600V DC wide-voltage switch power supply.
Summary of the invention
Technical problem to be solved by this invention is to provide a kind of wide voltage self-excited switching power supply at the defective that prior art exists.
The present invention adopts following technical scheme for achieving the above object:
Wide voltage self-excited switching power supply of the present invention, it is characterized in that comprising i.e. first diode to the, five diodes of five diodes, four triodes are first triode to the, four triodes, 11 resistance are first resistance to the, 11 resistance, first electrochemical capacitor, second electrochemical capacitor, six electric capacity are first electric capacity to the, five electric capacity and the 6th electric capacity, power supply terminal, the three-terminal voltage-stabilizing pipe, transformer and light lotus root, wherein the anode of power supply terminal links to each other with the anode of first diode, the negative terminal of power supply terminal respectively with the negative terminal of first electrochemical capacitor, one end of first electric capacity connects ground connection; The negative terminal of first diode is connected with the anode of first electrochemical capacitor, the other end of first electric capacity, an end of first resistance, an end of second resistance and 1 pin of transformer respectively; The other end of first resistance is connected with the collector electrode of second triode, the collector electrode of the 3rd triode, the base stage of the 4th triode, an end of the 3rd resistance and the negative electrode of the 5th diode; The other end of second resistance is connected with the negative electrode of second diode and an end of the 4th electric capacity respectively, and the other end of the 4th electric capacity is connected ground connection with 4 pin of transformer, an end of the 7th resistance, the emitter of second triode, the emitter of the 3rd triode, the anode of the 5th diode, an end of the 3rd electric capacity respectively; The anode of second diode is connected with 2 pin of transformer and the collector electrode of the 4th triode respectively, and the emitter of the 4th triode is connected with an end of the 6th resistance and the other end of the 7th resistance respectively, and the other end of the 6th resistance is connected with the base stage of the 3rd triode; One end of the 3rd diode is connected with an end of second electric capacity, the other end of the 3rd resistance respectively, and the other end of the 3rd diode is connected with 3 pin of transformer, the other end of second electric capacity, the anode of the 4th diode and the base stage of first triode respectively; The anode of the 4th diode is connected with the collector electrode of first triode and an end of the 4th resistance respectively, and the other end of the 4th resistance is connected with the other end of the 3rd electric capacity, 3 pin and second transistor base of light lotus root respectively; Be connected with 4 pin of light lotus root behind the emitter series resistor of first triode; 5 pin of transformer are connected with the negative terminal of second electrochemical capacitor, an end of the 6th electric capacity, an end of the 11 resistance, an end of the tenth resistance, 2 pin of three-terminal voltage-stabilizing pipe respectively with connecing power supply output, and 6 pin of transformer are connected with power output end with the anode of second electrochemical capacitor, the other end of the 6th electric capacity, the other end of the 11 resistance, an end of the 8th resistance, an end of the 9th resistance respectively after being connected in series the 6th diode; 2 pin of another termination light lotus root of the 8th resistance, the other end of the 9th resistance connect the other end of the tenth resistance, 1 pin of three-terminal voltage-stabilizing pipe and an end of the 5th electric capacity respectively, and the other end of the 5th electric capacity connects 3 pin of three-terminal voltage-stabilizing pipe and 1 pin of light lotus root respectively.
The present invention can make in input voltage 120～600V scope, by adjusting each device parameters of its inner parameter, can obtain 5～30V free voltage at output and provide working power for EPS, ups power control circuit board, this Switching Power Supply makes the versatility enhancing in design of EPS, ups power, satisfies under the different electric pressure stand-by power supply supply power modes and works.
Description of drawings
Fig. 1: circuit theory diagrams of the present invention;
Fig. 2: transformer winding structure figure of the present invention.
Embodiment
Below in conjunction with accompanying drawing technical scheme of the present invention is elaborated:
As shown in Figure 1, the circuit of wide voltage self-excited switching power supply is that power supply terminal DZ01 anode links to each other with diode D1 anode, and negativing ending grounding will be imported power supply 120～600V and be connected with circuit; Diode D1 negative terminal is connected with capacitor C 2 one ends with electrochemical capacitor C1 anode, and the other end of electrochemical capacitor C1 negative terminal and capacitor C 2 is ground connection together, and the circuit of this moment carries out filtering to power supply makes it stable.Starting resistance R1 one end is connected with electrochemical capacitor C1 anode, and the other end is connected with the base stage of triode Q4, and this starting resistance R1 is that switch triode Q4 base stage is carried starting current.Resistance R 2 one ends are connected with electrochemical capacitor C2 anode, and the other end is connected with diode D2 negative terminal and capacitor C 5 one ends, capacitor C 5 other end ground connection, and diode D2 anode is connected with 2 pin and the triode Q4 collector electrode of transformer T1, and this contactor clamper absorbs circuit.Switch triode Q4 emitter is connected with resistance R 6 one ends and resistance R 7 one ends; resistance R 7 other end ground connection; resistance R 6 other ends are connected with triode Q3 base stage; triode Q3 collector electrode is connected with triode Q4 base stage; triode Q3 grounded emitter, current sampling resistor R7 is for playing output overcurrent and short-circuit protection effect with triode Q3.Diode D3 is in parallel with capacitor C 3, diode D3 is anodal to be connected with 3 pin of transformer T1, and negative terminal is connected with resistance R 3 one ends, and resistance R 3 other ends are connected with triode Q4 base stage, this circuit provides drive current for the conducting of switch triode Q4, accelerates the conducting speed of switching tube Q4.Diode D4 anode is connected with transformer 3 pin and triode Q1 base stage, negative terminal is connected with resistance R 4 one ends and triode Q1 collector electrode, resistance R 4 other ends are connected with 3 pin of capacitor C 4 one ends and triode Q2 base stage and light lotus root PC0, capacitor C 4 other ends connect ground connection with triode Q2 emitter, triode Q1 emitter is connected with resistance R 5 one ends, resistance R 5 other ends are connected with 4 pin of light lotus root PC0, this circuit is by diode D4, resistance R 4, triode Q1, resistance R 5, the light lotus root PC0 conducting that triode Q2 is controlled in charging to capacitor C 4 with end, turn-off frequency with the conducting of triode Q2 by the conducting of by-pass cock triode Q4.1 pin of transformer T1 is connected with electrochemical capacitor C1 anode, and 2 pin are connected with switch triode Q4 collector electrode, and 5 pin connect output ground, and 6 pin are connected with diode D6 anode, and transformer T1 can change over voltage with the alternating current of input.The negative terminal of electrochemical capacitor C7 anode and diode D6 and capacitor C 8 one ends and resistance R 11 1 ends connect, the negative terminal of electrochemical capacitor C7 is connected with capacitor C 8 one ends and resistance R 11 1 ends and ground connection, this circuit with the alternating voltage of transformer T1 output behind rectifying and wave-filtering, exporting a galvanic current at the anode of capacitor C 7 presses, can be at 5V～24V, or littler, bigger.2 pin of light lotus root PC0 are connected with resistance R 8 one ends, and 3 pin of 1 pin and capacitor C 6 one ends and three-terminal voltage-stabilizing pipe U1 connect; One end of resistance R 8 is connected on power output end+5V with an end of resistance R 9,1 pin of the other end of the other end of resistance R 9 and capacitor C 6 and three-terminal voltage-stabilizing pipe U1 and an end of resistance R 10 link together, 2 pin of resistance R 10 other ends and three-terminal voltage-stabilizing pipe U1 connect on the ground GND1 of power supply output, and this circuit mainly opens the effect of output voltage stabilizing feedback.
The present invention is applied on EPS, the ups power, when 120V～when the 600V DC power supply directly was connected on terminal DZ01, diode D1, electrochemical capacitor C1,2 pairs of power supplys of capacitor C carried out filtering.By starting resistance R1 starting switch triode Q4 conducting, 3 pin through transformer T1, the voltage of 4 pin feedback winding feedback output is through diode D3, capacitor C 3, resistance R 3 is accelerated switch triode Q4 conducting speed, simultaneously by diode D4, triode Q1, resistance R 4, resistance R 5,3 pin, 4 pin of the light-receiving end of light lotus root PC0 charge to capacitor C 4, when capacitor C 4 and triode Q3 base stage tie point voltage reach 0.7V, triode Q2 conducting, triode Q4 closes, after triode Q4 closes, on the capacitor C 4 after the voltage slow release, triode Q2 closes, work with this control switch triode Q4 switch, in limit of transformer T1, produce alternating current, secondary output limit output AC voltage, pass through diode D6 again, electrochemical capacitor C7, behind capacitor C 8 rectifying and wave-filterings, produce direct voltage, this direct voltage process is by resistance R 8, R9, R10, the charging interval that the feedback circuit that capacitor C 6 and three-terminal voltage-stabilizing pipe U1 and light lotus root PC0 form comes control capacitance C4, thereby frequency is turn-offed in regulating and controlling triode Q4 conducting, with this control transformer T1 output, remain on about 5V through the voltage behind the rectifying and wave-filtering.
The transformer of super wide voltage self-activated switch power supply of the present invention can adopt the EI33 skeleton to increase the quantity that secondary winding is exported, as shown in Figure 2.
Claims (1)
1, a kind of wide voltage self-excited switching power supply, it is characterized in that comprising that five diodes are that first diode (D1) is to the 5th diode (D5), four triodes are that first triode (Q1) is to the 4th triode (Q4), 11 resistance are that first resistance (R1) is to the 11 resistance (R11), first electrochemical capacitor (C1), second electrochemical capacitor (C7), six electric capacity are that first electric capacity (C2) is to the 5th electric capacity (C6) and the 6th electric capacity (C8), power supply terminal (DZ01), three-terminal voltage-stabilizing pipe (U1), transformer (T1) and light lotus root (PC0), wherein the anode of power supply terminal (DZ01) links to each other with the anode of first diode (D1), the negative terminal of power supply terminal (DZ01) respectively with the negative terminal of first electrochemical capacitor (C1), one end of first electric capacity (C1) connects ground connection; The negative terminal of first diode (D1) is connected with the anode of first electrochemical capacitor (C1), the other end of first electric capacity (C2), an end of first resistance (R1), an end of second resistance (R2) and 1 pin of transformer (T1) respectively; The other end of first resistance (R1) is connected with the collector electrode of the collector electrode of second triode (Q2), the 3rd triode (Q3), the base stage of the 4th triode (Q4), an end of the 3rd resistance (R3) and the negative electrode of the 5th diode (D5); The other end of second resistance (R2) is connected with the negative electrode of second diode (D2) and an end of the 4th electric capacity (C5) respectively, and the other end of the 4th electric capacity (C5) is connected ground connection with 4 pin of transformer (T1), an end of the 7th resistance (R7), the emitter of second triode (Q2), the emitter of the 3rd triode (Q3), the anode of the 5th diode (D5), an end of the 3rd electric capacity (C4) respectively; The anode of second diode (D2) is connected with 2 pin of transformer (T1) and the collector electrode of the 4th triode (Q4) respectively, the emitter of the 4th triode (Q4) is connected with an end of the 6th resistance (R6) and the other end of the 7th resistance (R7) respectively, and the other end of the 6th resistance (R6) is connected with the base stage of the 3rd triode (Q3); One end of the 3rd diode (D3) is connected with an end of second electric capacity (C3), the other end of the 3rd resistance (R3) respectively, and the other end of the 3rd diode (D3) is connected with 3 pin of transformer (T1), the other end of second electric capacity (C3), the anode of the 4th diode (D4) and the base stage of first triode (Q1) respectively; The anode of the 4th diode (D4) is connected with the collector electrode of first triode (Q1) and an end of the 4th resistance (R4) respectively, and the other end of the 4th resistance (R4) is connected with the other end of the 3rd electric capacity (C4), 3 pin and second triode (Q2) base stage of light lotus root (PC0) respectively; Be connected with 4 pin of light lotus root (PC0) behind the emitter series resistor R5 of first triode (Q1); 5 pin of transformer (T1) are connected (GND1) with the negative terminal of second electrochemical capacitor (C7), an end of the 6th electric capacity (C8), an end of the 11 resistance (R11), an end of the tenth resistance (R10), 2 pin of three-terminal voltage-stabilizing pipe (U1) respectively with connecing power supply output, and 6 pin of transformer (T1) are connected with power output end with the anode of second electrochemical capacitor (C7), the other end of the 6th electric capacity (C8), the other end of the 11 resistance (R11), an end of the 8th resistance (R8), an end of the 9th resistance (R9) respectively after being connected in series the 6th diode (D6); 2 pin of another termination light lotus root (PC0) of the 8th resistance (R8), the other end of the 9th resistance (R9) connects the other end of the tenth resistance (R10), 1 pin of three-terminal voltage-stabilizing pipe (U1) and an end of the 5th electric capacity (C6) respectively, and the other end of the 5th electric capacity (C6) connects 3 pin of three-terminal voltage-stabilizing pipe (U1) and 1 pin of light lotus root (PC0) respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2009100329709A CN101567631A (en) | 2009-06-03 | 2009-06-03 | Wide voltage self-excited switching power supply |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2009100329709A CN101567631A (en) | 2009-06-03 | 2009-06-03 | Wide voltage self-excited switching power supply |
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| CN101567631A true CN101567631A (en) | 2009-10-28 |
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| CNA2009100329709A Pending CN101567631A (en) | 2009-06-03 | 2009-06-03 | Wide voltage self-excited switching power supply |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104882953A (en) * | 2015-05-29 | 2015-09-02 | 苏州工业职业技术学院 | Mobile phone charging control circuit |
| CN110224611A (en) * | 2019-05-31 | 2019-09-10 | 深圳市奋勇光电有限公司 | A kind of completely isolated circuit |
| CN112162587A (en) * | 2020-09-16 | 2021-01-01 | 北京伟仕天成科技有限公司 | Novel voltage stabilizing circuit |
-
2009
- 2009-06-03 CN CNA2009100329709A patent/CN101567631A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104882953A (en) * | 2015-05-29 | 2015-09-02 | 苏州工业职业技术学院 | Mobile phone charging control circuit |
| CN110224611A (en) * | 2019-05-31 | 2019-09-10 | 深圳市奋勇光电有限公司 | A kind of completely isolated circuit |
| CN112162587A (en) * | 2020-09-16 | 2021-01-01 | 北京伟仕天成科技有限公司 | Novel voltage stabilizing circuit |
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Open date: 20091028 |