CN102427645B - Electrolysis-free long-service-life power supply - Google Patents
Electrolysis-free long-service-life power supply Download PDFInfo
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- CN102427645B CN102427645B CN2011103143215A CN201110314321A CN102427645B CN 102427645 B CN102427645 B CN 102427645B CN 2011103143215 A CN2011103143215 A CN 2011103143215A CN 201110314321 A CN201110314321 A CN 201110314321A CN 102427645 B CN102427645 B CN 102427645B
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B20/00—Energy efficient lighting technologies, e.g. halogen lamps or gas discharge lamps
- Y02B20/40—Control techniques providing energy savings, e.g. smart controller or presence detection
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B70/00—Technologies for an efficient end-user side electric power management and consumption
- Y02B70/10—Technologies improving the efficiency by using switched-mode power supplies [SMPS], i.e. efficient power electronics conversion e.g. power factor correction or reduction of losses in power supplies or efficient standby modes
Abstract
The invention creatively provides an electrolysis-free long-service-life power supply. A rectifier circuit I is respectively connected with a power supply filter circuit, a power factor correction circuit and a flexible switch drive circuit, the power factor correction circuit is connected with the flexible switch drive circuit, the flexible switch drive circuit is connected with a high-frequency transformer T which is connected with a rectifier circuit II, a difference-mode and common-mode filter circuit is connected to the high-frequency transformer T and the rectifier circuit II jointly, the output end of the difference-mode and common-mode filter circuit is connected with an output circuit, the output circuit and the difference-mode and common-mode filter circuit are connected with a constant-current voltage-stabilizing control circuit, and the constant-current voltage-stabilizing control circuit is simultaneously connected with the high-frequency transformer T, the difference-mode and common-mode filter circuit and the power factor correction circuit. Because the switch power supply works in an ultra-frequency mode and a difference-mode inductance and a common-mode inductance have functions of filtering higher harmonics and ripple waves, a CBB (polypropylene capacitor) is used for replacing an electrolysis capacitor, the original electrolysis capacitor is removed, the service life of an LED drive power supply is prolonged, and the service life of an LED energy-saving lamp is also prolonged.
Description
Technical field
The invention relates to a kind of without electrolysis long-life power supply, particularly a kind of a kind of driving power that adopts electric source filter circuit, circuit of power factor correction, soft switch driving circuit, rectification circuit, differential mode common mode filtering circuit and constant-current voltage-stabilizing control circuit.
Background technology
Owing to the application of electrochemical capacitor in the existing Switching Power Supply, had a strong impact on the useful life of Switching Power Supply.The life-span of general electrochemical capacitor is 6000-8000 hour.The phenomenons such as special usually have the electrochemical capacitor explosion at the higher environment of serviceability temperature, and electrolyte is dry make electrochemical capacitor scrap in advance inefficacy.
Such as: employing conventional switching power supply or constant voltage constant current power that the LED electricity-saving lamp that occurs on the market now, major part all adopt the resistance-capacitance depressurization power supply, also have.This LED electricity-saving lamp is in use usually because the heating of power supply self and LED lamp pearl, and the inner electrolyte of electrochemical capacitor is dry and the LED electricity-saving lamp is damaged in the power supply, has shortened the useful life of LED electricity-saving lamp.Use in the past few years proves that general LED electricity-saving lamp also just can use 1-2 years, seldom can use 2-3 years.
In the global design of LED electricity-saving lamp, generally all be the designed, designed LED of producer luminous component (aluminium base) and shell, power supply mostly adopts the way of outsourcing to solve.This just exists the LED driving power and the LED luminous plaque mates the factors such as unreasonable, and various in style so that the LED electricity-saving lamp that occurs on the market is multifarious, the life-span differs.And the LED lamp pearl of introducing to the market is also uneven, the better light decay that uses after 25000-50000 hour of can reaching between 35% to 55%, and with it the life-span of supporting LED power supply also all in 10,000 hours; And the lamp pearl life-span reach 50000 hours, light decay is between 25% to 35%, the power supply that matches is few, does not substantially have to reach 20000-30000 hour.
The key problem in technology of LED Power Management Design is now: 1, improve the operating frequency of Switching Power Supply to reduce capacitance values; 2, carry out the development and Design of soft switch chip, reduce the switching loss of metal-oxide-semiconductor, reduce power supply self-heating amount; 3, replace electrochemical capacitor with electrodeless electric capacity; 4, adopt filter circuit, reduce the capacity of secondary filter capacitor.Prolong the useful life of Switching Power Supply in the design of LED driving power, make it to be complementary with the useful life of LED lamp pearl, meet the designing requirement of LED electricity-saving lamp.
Summary of the invention
The technical problem that the invention will solve provides a kind of without electrolysis long-life power supply, replaces electrochemical capacitor with CBB electric capacity, has prolonged the useful life of LED driving power.
For overcoming the above problems, the concrete technical scheme of the invention is as follows: a kind of without electrolysis long-life power supply, the binding post N that connects civil power is connected with the input of electric source filter circuit with binding post L, the output of electric source filter circuit is connected with the input of rectification circuit I, the output V-of rectification circuit I is connected with circuit of power factor correction, the output V+ of rectification circuit I is connected with soft switch driving circuit with booster diode D1 by series connection differential mode inductance L2, circuit of power factor correction is connected with soft switch driving circuit, the output of soft switch driving circuit is connected with the input of high frequency transformer T, the output winding I of high frequency transformer T is connected to the rectification circuit II, the output winding II of high frequency transformer T and the output of rectification circuit II are connected to the differential mode common mode filtering circuit jointly, the output of differential mode common mode filtering circuit is connected with output circuit, the output V+ of output circuit is connected output and is connected with the constant-current voltage-stabilizing control circuit with the differential mode common mode filtering circuit, the constant-current voltage-stabilizing control circuit simultaneously and high frequency transformer T, the differential mode common mode filtering circuit is connected with circuit of power factor correction.
Described circuit of power factor correction meets output V+ and the V-with the rectification circuit I, between the output V+ of rectification circuit I and the V-and be connected to filter capacitor C5, the output V+ of rectification circuit I is connected with soft switch driving circuit with booster diode D1 by series connection differential mode inductance L2, one higher-order of oscillation IC1 is arranged in the circuit of power factor correction, the pin 1 of higher-order of oscillation IC1 is connected with power supply VCC, pin 2 is connected with the output of booster diode D1 by series resistance R7, ground connection after pin 2 is connected with resistance R 8, pin 3 is connected with the grid that drives triode Q1 that boosts by series resistance R4, the grid that drives triode Q1 of boosting the afterwards ground connection of connecting with resistance R 5, the drain electrode that drives triode Q1 of boosting is connected with the input of booster diode D1, resistance R 6 are connected with capacitor C in parallel after an end be connected with the source electrode of the driving triode Q1 that boosts, one end is connected with the output of booster diode D1, be connected with soft switch driving circuit behind the pin 4 series resistance R9, pin 5 is connected with the output V-of rectification circuit I with resistance R 1 series connection is rear, ground connection after pin 5 is connected with capacitor C 6, one end of resistance R 2 is connected with the output V-of rectification circuit I, the other end ground connection of resistance R 2, pin 6 is connected with the output of optocoupler IC2 in the constant-current voltage-stabilizing control circuit, ground connection after pin 7 is connected with resistance R 3 is connected with soft switch driving circuit behind the pin 8 series resistance R10.
The triode of driving Q2 is arranged in the described soft switch driving circuit, drive triode Q3 and inductance L 3, the drain electrode that drives triode Q2 is connected with the output of booster diode D1, be connected with the pin 5 of high frequency transformer T behind the series capacitance C8 of its junction, ground connection behind the pin 5 series capacitance C9 of high frequency transformer T, the grid that drives triode Q2 is connected with circuit of power factor correction, the source electrode that drives triode Q2 is connected with the drain electrode that drives triode Q3, be connected with the pin 6 of high frequency transformer T behind the series inductance L3 of its junction, the grid that drives triode Q3 is connected with circuit of power factor correction, drives the source ground of triode Q3.
The triode of driving Q2 is arranged in the described soft switch driving circuit, and the drain electrode that drives triode Q2 is connected with the pin 6 of high frequency transformer T, and the grid that drives triode Q2 is connected with circuit of power factor correction, drives the source ground of triode Q2.
The beneficial effect of the invention: owing to adopt circuit of power factor correction, used again higher-order of oscillation IC1 in the circuit of power factor correction, this circuit has improved the operating frequency of Switching Power Supply; Adopt soft switch driving circuit, Switching Power Supply is worked under the hyperfrequency pattern, and the establishment surge current, circuit protected.Because circuit is worked under the hyperfrequency pattern so cancelled electrochemical capacitor, has prolonged the useful life of power supply.
Description of drawings
Fig. 1 is the structured flowchart of the invention.
Fig. 2 is the circuit theory diagrams of the invention embodiment one.
Fig. 3 is the circuit theory diagrams of the invention embodiment two.
Embodiment
Embodiment one:
As shown in Figure 1, the binding post N that connects civil power is connected with the input of electric source filter circuit 1 with binding post L, the output of electric source filter circuit 1 is connected with the input of rectification circuit I 2, the output V-of rectification circuit I 2 is connected with circuit of power factor correction 3, the output V+ of rectification circuit I 2 is connected with soft switch driving circuit 4 with booster diode D1 by series connection differential mode inductance L2, circuit of power factor correction 3 is connected with soft switch driving circuit 4, the output of soft switch driving circuit 4 is connected with the input of high frequency transformer T 9, the output winding I of high frequency transformer T 9 is connected to rectification circuit II 5, the output winding II of high frequency transformer T 9 and the output of rectification circuit II 5 are connected to differential mode common mode filtering circuit 6 jointly, the output of differential mode common mode filtering circuit 6 is connected with output circuit 7, the output that the output V+ of output circuit 7 is connected with the differential mode common mode filtering circuit is connected with constant-current voltage-stabilizing control circuit 8,8 whiles and high frequency transformer T 9 of constant-current voltage-stabilizing control circuit, differential mode common mode filtering circuit 6 is connected connection with circuit of power factor correction.
As shown in Figure 2, described circuit of power factor correction 3 meets output V+ and the V-with rectification circuit I 2, between the output V+ of rectification circuit I 2 and the V-and be connected to filter capacitor C5, the output V+ of rectification circuit I 2 is connected with soft switch driving circuit 4 with booster diode D1 by series connection differential mode inductance L2, one higher-order of oscillation IC1 is arranged in the circuit of power factor correction 3, the pin 1 of higher-order of oscillation IC1 is connected with power supply VCC, pin 2 is connected with the output of booster diode D1 by series resistance R7, ground connection after pin 2 is connected with resistance R 8, pin 3 is connected with the grid that drives triode Q1 that boosts by series resistance R4, the grid that drives triode Q1 of boosting the afterwards ground connection of connecting with resistance R 5, the drain electrode that drives triode Q1 of boosting is connected with the input of booster diode D1, resistance R 6 are connected with capacitor C in parallel after an end be connected with the source electrode of the driving triode Q1 that boosts, one end is connected with the output of booster diode D1, be connected with soft switch driving circuit 4 behind the pin 4 series resistance R9, pin 5 is connected with the output V-of rectification circuit I 2 with resistance R 1 series connection is rear, ground connection after pin 5 is connected with capacitor C 6, one end of resistance R 2 is connected with the output V-of rectification circuit I 2, the other end ground connection of resistance R 2, pin 6 is connected with the output of optocoupler IC2 in the constant-current voltage-stabilizing control circuit 8, ground connection after pin 7 is connected with resistance R 3 is connected with soft switch driving circuit 4 behind the pin 8 series resistance R10.
The triode of driving Q2 is arranged in the described soft switch driving circuit 4, drive triode Q3 and inductance L 3, the drain electrode that drives triode Q2 is connected with the output of booster diode D1, be connected with the pin 5 of high frequency transformer T 9 behind the series capacitance C8 of its junction, ground connection behind the pin 5 series capacitance C9 of high frequency transformer T 9, the grid that drives triode Q2 is connected with circuit of power factor correction 3, the source electrode that drives triode Q2 is connected with the drain electrode that drives triode Q3, be connected with the pin 6 of high frequency transformer T 9 behind the series inductance L3 of its junction, the grid that drives triode Q3 is connected with circuit of power factor correction 3, drives the source ground of triode Q3.
Rectifier diode D2 and rectifier diode D3 are in parallel, rectifier diode D2 is connected the pin 4 of positive pole and high frequency transformer T 9 and is connected with pin and is connected with rectifier diode D3, rectifier diode D2 is connected with rectifier diode D3 and is connected with common mode inductance L 5 behind the negative pole series connection differential mode inductance L4, in input one side of common mode inductance L5 and be connected to capacitor C 10 and resistance R 23, in output one side of common mode inductance L5 and be connected to capacitor C 11, ground connection after capacitor C 11 and resistance R 16 series connection.
In the constant-current voltage-stabilizing control circuit 8, the pin 1 of high frequency transformer T 9 is connected with rectifier diode D4, rectifier diode D4 series resistance R14 is connected with R15 and is connected with the base stage that drives triode Q4, ground connection behind the base stage series voltage stabilizing diode VR3 of driving triode Q4, on the pin 2 that capacitor C 12 is attempted by high frequency transformer T and the negative pole of rectifier diode D4, on the pin 2 that capacitor C 13 is attempted by high frequency transformer T and the tie point of resistance R 14 and R15, the collector electrode that drives triode Q4 is connected on the tie point of resistance R 14 and R15, the emitter that drives triode Q4 connects the VCC end of operational amplifier U1-1, be connected between the emitter and GND that drives triode Q4 after resistance R 18 and the voltage stabilizing didoe D7 series connection, resistance R 18 is connected mid point and is connected with R20 through resistance R 19 and is connected inverting input with operational amplifier U1-2 with the inverting input of operational amplifier U1-1 and is connected with voltage stabilizing didoe D7, resistance R 19 connects sampling end with sampling resistor R16 through current sampling resistor R17, be connected between the V+ and GND of output circuit 7 after voltage sample resistance R 21 and the R22 series connection, the mid point of resistance R 21 and R22 connects the in-phase input end of operational amplifier U1-2, the in-phase input end ground connection of operational amplifier U1-1.Diode D5 is connected with diode D6 is connected output with the output of operational amplifier U1-1 and is connected with operational amplifier U1-2, then with the input of resistance R 14 series connections and optocoupler IC2, the output of optocoupler IC2 is connected with the pin 6 of power factor correction circuit 3, and the input of optocoupler IC2 and output are connected to resistance R 13 and capacitor C 14.
During work, boosting drives triode Q1 driving power factor correcting circuit 3, drives triode Q2 and drive triode Q3 to drive pulse-width modulation circuit.One of high frequency transformer T 9 output winding produces output voltage, and output voltage provides use voltage after diode D2 and diode D3 rectification, and this voltage is exported after differential mode inductance L4, common mode inductance L5 and capacitor C 10, C11 filtering.The output voltage that another output winding of high frequency transformer T 9 produces provides operating voltage to operational amplifier U1-1 and operational amplifier U1-2 through driving after triode Q4 amplifies again after diode D4 rectification.Resistance R 18, R19, R20, voltage-stabiliser tube D7 provide the 2.5V reference voltage to the inverting input of operational amplifier U1-1 and operational amplifier U1-2.Resistance R 16 is current sampling resistor, and it is in the variation of testing electric current, resistance R 17 current detecting input resistances, and it connects the in-phase input end with operational amplifier U1-1, finishes Current Control.Resistance R 21, R22 connect the two ends with output voltage, play the dividing potential drop effect, and its mid point connects the in-phase input end with operational amplifier U1-2, finish voltage stabilizing control.Diode D5, D6 connect respectively two outputs with operational amplifier U1-1 and operational amplifier U1-2, then with the input of resistance R 14 series connections and optocoupler IC2, and the output head grounding of optocoupler IC2.Curent change in the output circuit and change in voltage all can make the luminous tube in the optocoupler IC2 produce the light and shade variation, thereby the triode electric current in the optocoupler IC2 is changed.The output termination of optocoupler IC2 and higher-order of oscillation IC1, the pulsewidth with the output that changes higher-order of oscillation IC1 plays the pressure-stabilizing constant flow effect.
It is high-power without electrolysis long-life power supply that present embodiment is applicable to provide.
Embodiment two:
As shown in Figure 3, this circuit structure is similar to the circuit structure of Fig. 2, and its difference is: the soft switch driving circuit among Fig. 2 is half-bridge driven, and the soft switch driving circuit among present embodiment Fig. 3 is single driving that swashs, its operation principle basic simlarity.
The binding post N that connects civil power is connected with the input of electric source filter circuit 1 with binding post L, the output of electric source filter circuit 1 is connected with the input of rectification circuit I 2, the output V-of rectification circuit I 2 is connected with circuit of power factor correction 3, the output V+ of rectification circuit I 2 is connected with soft switch driving circuit 4 with booster diode D1 by series connection differential mode inductance L2, circuit of power factor correction 3 is connected with soft switch driving circuit 4, the output of soft switch driving circuit 4 is connected with the input of high frequency transformer T 9, the output winding I of high frequency transformer T 9 is connected to rectification circuit II 5, the output winding II of high frequency transformer T 9 and the output of rectification circuit II 5 are connected to differential mode common mode filtering circuit 6 jointly, the output of differential mode common mode filtering circuit 6 is connected with output circuit 7, the output that the output V+ of output circuit 7 is connected with the differential mode common mode filtering circuit is connected with constant-current voltage-stabilizing control circuit 8,8 whiles and high frequency transformer T 9 of constant-current voltage-stabilizing control circuit, differential mode common mode filtering circuit 6 is connected connection with circuit of power factor correction.
Described circuit of power factor correction 3 meets output V+ and the V-with rectification circuit I 2, between the output V+ of rectification circuit I 2 and the V-and be connected to filter capacitor C5, the output V+ of rectification circuit I 2 is connected with soft switch driving circuit 4 with booster diode D1 by series connection differential mode inductance L2, one higher-order of oscillation IC1 is arranged in the circuit of power factor correction 3, the pin 1 of higher-order of oscillation IC1 is connected with power supply VCC, pin 2 is connected with the output of booster diode D1 by series resistance R7, ground connection after pin 2 is connected with resistance R 8, pin 3 is connected with the grid that drives triode Q1 that boosts by series resistance R4, the grid that drives triode Q1 of boosting the afterwards ground connection of connecting with resistance R 5, the drain electrode that drives triode Q1 of boosting is connected with the input of booster diode D1, resistance R 6 are connected with capacitor C in parallel after an end be connected with the source electrode of the driving triode Q1 that boosts, one end is connected with the output of booster diode D1, be connected with soft switch driving circuit 4 behind the pin 4 series resistance R9, pin 5 is connected with the output V-of rectification circuit I 2 with resistance R 1 series connection is rear, ground connection after pin 5 is connected with capacitor C 6, one end of resistance R 2 is connected with the output V-of rectification circuit I 2, the other end ground connection of resistance R 2, pin 6 is connected with the output of optocoupler IC2 in the constant-current voltage-stabilizing control circuit 8, ground connection after pin 7 is connected with resistance R 3 is connected with soft switch driving circuit 4 behind the pin 8 series resistance R10.
The triode of driving Q2 is arranged in the described soft switch driving circuit 4, and the drain electrode that drives triode Q2 is connected with the pin 6 of high frequency transformer T 9, and the grid that drives triode Q2 is connected with circuit of power factor correction 3, drives the source ground of triode Q2.
Present embodiment is applicable to provide small-power without electrolysis long-life power supply.
It should be apparent that: the invention is not limited to above-described embodiment and can makes it in the situation of the scope and spirit that do not break away from the invention and revising or change.
Claims (3)
1. one kind without electrolysis long-life power supply, it is characterized in that: the binding post N that connects civil power is connected with the input of electric source filter circuit (1) with binding post L, the output of electric source filter circuit (1) is connected with the input of rectification circuit I (2), the output V-of rectification circuit I (2) is connected with circuit of power factor correction (3), the output V+ of rectification circuit I (2) is connected with soft switch driving circuit (4) with booster diode D1 by series connection differential mode inductance L2, circuit of power factor correction (3) is connected with soft switch driving circuit (4), the output of soft switch driving circuit (4) and high frequency transformer T(9) input be connected, high frequency transformer T(9) output winding I is connected to rectification circuit II (5), the output of output winding II high frequency transformer T(9) and rectification circuit II (5) is connected to differential mode common mode filtering circuit (6) jointly, the output of differential mode common mode filtering circuit (6) is connected with output circuit (7), the output V+ of output circuit (7) is connected 6 with the differential mode common mode filtering circuit) output be connected with constant-current voltage-stabilizing control circuit (8), constant-current voltage-stabilizing control circuit (8) simultaneously and high frequency transformer T(9), differential mode common mode filtering circuit (6) is connected 3 with circuit of power factor correction) connect; Described circuit of power factor correction (3) meets output V+ and the V-with rectification circuit I (2), between the output V+ of rectification circuit I (2) and the V-and be connected to filter capacitor C5, the output V+ of rectification circuit I (2) is connected with soft switch driving circuit (4) with booster diode D1 by series connection differential mode inductance L2, one higher-order of oscillation IC1 is arranged in the circuit of power factor correction (3), the pin 1 of higher-order of oscillation IC1 is connected with power supply VCC, pin 2 is connected with the output of booster diode D1 by series resistance R7, ground connection after pin 2 is connected with resistance R 8, pin 3 is connected with the grid that drives triode Q1 that boosts by series resistance R4, the grid that drives triode Q1 of boosting the afterwards ground connection of connecting with resistance R 5, the drain electrode that drives triode Q1 of boosting is connected with the input of booster diode D1, resistance R 6 are connected with capacitor C in parallel after an end be connected with the source electrode of the driving triode Q1 that boosts, one end is connected with the output of booster diode D1, be connected with soft switch driving circuit (4) behind the pin 4 series resistance R9, pin 5 is connected with the output V-of rectification circuit I (2) with resistance R 1 series connection is rear, ground connection after pin 5 is connected with capacitor C 6, one end of resistance R 2 is connected with the output V-of rectification circuit I (2), the other end ground connection of resistance R 2, pin 6 is connected with the output of optocoupler IC2 in the constant-current voltage-stabilizing control circuit (8), ground connection after pin 7 is connected with resistance R 3 is connected with soft switch driving circuit (4) behind the pin 8 series resistance R10.
2. as claimed in claim 1 a kind of without electrolysis long-life power supply, it is characterized in that: the triode of driving Q2 is arranged in the described soft switch driving circuit (4), drive triode Q3 and inductance L 3, the drain electrode that drives triode Q2 is connected with the output of booster diode D1, behind the series capacitance C8 of its junction with high frequency transformer T(9) pin 5 be connected, high frequency transformer T(9) ground connection behind the pin 5 series capacitance C9, the grid that drives triode Q2 is connected with circuit of power factor correction (3), the source electrode that drives triode Q2 is connected with the drain electrode that drives triode Q3, behind the series inductance L3 of its junction with high frequency transformer T(9) pin 6 be connected, the grid that drives triode Q3 is connected with circuit of power factor correction (3), drives the source ground of triode Q3.
3. as claimed in claim 1 a kind of without electrolysis long-life power supply, it is characterized in that: the triode of driving Q2 is arranged in the described soft switch driving circuit (4), drive the drain electrode and high frequency transformer T(9 of triode Q2) pin 6 be connected, the grid that drives triode Q2 is connected with circuit of power factor correction (3), drives the source ground of triode Q2.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011103143215A CN102427645B (en) | 2011-10-17 | 2011-10-17 | Electrolysis-free long-service-life power supply |
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| Application Number | Priority Date | Filing Date | Title |
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| CN2011103143215A CN102427645B (en) | 2011-10-17 | 2011-10-17 | Electrolysis-free long-service-life power supply |
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| CN102427645A CN102427645A (en) | 2012-04-25 |
| CN102427645B true CN102427645B (en) | 2013-10-30 |
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| CN2011103143215A Expired - Fee Related CN102427645B (en) | 2011-10-17 | 2011-10-17 | Electrolysis-free long-service-life power supply |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103475209A (en) * | 2013-09-29 | 2013-12-25 | 武汉理工大学 | Non-electrolytic-capacitor high-power-factor correction device and method |
| CN104980039A (en) * | 2015-07-15 | 2015-10-14 | 深圳市镭润科技有限公司 | Switching power supply and method and device for controlling switching power supply |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5872430A (en) * | 1996-08-14 | 1999-02-16 | Motorola Inc. | Single switch electronic ballast with low in-rush current |
| CN102026448A (en) * | 2010-11-01 | 2011-04-20 | 王子能 | LED power circuit |
| CN201994862U (en) * | 2011-05-03 | 2011-09-28 | 抚顺市新鸿升照明电子有限责任公司 | Electroless long-lived soft-switching driving power |
| CN202276519U (en) * | 2011-10-17 | 2012-06-13 | 抚顺市新鸿升照明电子有限责任公司 | Electroless power supply with long service life |
-
2011
- 2011-10-17 CN CN2011103143215A patent/CN102427645B/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5872430A (en) * | 1996-08-14 | 1999-02-16 | Motorola Inc. | Single switch electronic ballast with low in-rush current |
| CN102026448A (en) * | 2010-11-01 | 2011-04-20 | 王子能 | LED power circuit |
| CN201994862U (en) * | 2011-05-03 | 2011-09-28 | 抚顺市新鸿升照明电子有限责任公司 | Electroless long-lived soft-switching driving power |
| CN202276519U (en) * | 2011-10-17 | 2012-06-13 | 抚顺市新鸿升照明电子有限责任公司 | Electroless power supply with long service life |
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