CN203872387U - Power off non-stroboscopic second gear dimmable LED driving power supply - Google Patents
Power off non-stroboscopic second gear dimmable LED driving power supply Download PDFInfo
- Publication number
- CN203872387U CN203872387U CN201420137808.XU CN201420137808U CN203872387U CN 203872387 U CN203872387 U CN 203872387U CN 201420137808 U CN201420137808 U CN 201420137808U CN 203872387 U CN203872387 U CN 203872387U
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- 230000000087 stabilizing effect Effects 0.000 claims description 24
- 239000003990 capacitor Substances 0.000 claims description 14
- 238000001914 filtration Methods 0.000 claims description 8
- 239000011324 bead Substances 0.000 abstract 1
- 230000005611 electricity Effects 0.000 abstract 1
- 230000002035 prolonged effect Effects 0.000 abstract 1
- 238000010791 quenching Methods 0.000 abstract 1
- 230000000171 quenching effect Effects 0.000 abstract 1
- 239000004065 semiconductor Substances 0.000 description 6
- 238000010586 diagram Methods 0.000 description 5
- 238000005286 illumination Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 239000003381 stabilizer Substances 0.000 description 2
- 230000007547 defect Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 230000010349 pulsation Effects 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
Classifications
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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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- Circuit Arrangement For Electric Light Sources In General (AREA)
Abstract
A power off non-stroboscopic second gear dimmable LED driving power supply comprises the following structures: a driving power supply circuit connected with an anode of an LED lamp and used for outputting a voltage signal; a MCU control circuit receiving the voltage signal from the driving circuit and used for switching a normal mode circuit 9 to a night lamp mode circuit 8 according to the voltage signal; a fast cut off circuit connected with the MCU control circuit and capable of fast cutting off the LED driving power supply in power failure. By employing the technical scheme, the lamp bead stroboscopic and gradually quenching phenomenon after light is off, i.e., circuit is cut off can be effectively prevented, electricity can be saved, and in addition, the service life of the LED lamp can be prolonged.
Description
Technical field
The utility model belongs to LED illumination Driving technique field, is further LED driving power, and especially a kind of power-off is without stroboscopic second gear Dimmable LED driving power.
Background technology
Along with scientific and technological progress, the light efficiency of LED is higher, and cost is lower, and pollution-free, meets the theme of national energy-saving environmental protection, is more and more subject to people's favor.And, due to growth in the living standard, people are no longer single light illumination modes to the demand of lighting, and LED bulb lamp, Down lamp are all generally to adopt monochromatic form at present, along with hommization and the sophistication of house fitting-up, and the raising of modern people to quality of the life, to room lighting even commercial lighting no longer meet the demand of single brightness, thereby pursue can be whenever and wherever possible and simple operations just can regulate the brightness of LED light fixture, so, there is circuit theory second gear Dimmable LED driving power as shown in Figure 5.But this power supply is due to the accumulate effect of its internal capacitance element, make turning off the light while being also open circuit, lamp pearl stroboscopic just extinguishes for several times gradually.
Summary of the invention
For the deficiencies in the prior art, the utility model provides a kind of power-off without stroboscopic second gear Dimmable LED driving power.
The utility model is achieved through the following technical solutions:
A kind of power-off, without stroboscopic second gear Dimmable LED driving power, comprising:
Driving power circuit, the positive pole of connection LED lamp, and output voltage signal;
MCU control circuit, comprise normal mode circuit 9 and night-light mode circuit 8, receive the voltage signal from drive circuit, be connected the negative pole of LED lamp with night-light mode circuit 8 by normal mode circuit 9, and can be according to complete the switching of normal mode circuit 9 with night-light mode circuit 8 from the voltage signal of drive circuit;
Fast breaking circuit, is connected with MCU control circuit, and can be in the time of power-off fast shut-off LED driving power.
Further, described quick breaking circuit comprises:
Resistance-capacitance circuit 10, carries out step-down to alternating current, and rectification is that direct current is supplied with voltage stabilizing circuit 11;
Voltage stabilizing circuit 11, the direct current that resistance-capacitance circuit 10 is provided carries out filtering and voltage stabilizing, and level and smooth stable DC voltage is supplied with to switching circuit 12;
Switching circuit 12, the level and smooth stable DC voltage being provided taking voltage stabilizing circuit 11, as electric energy, is fulfiled switching function.
Further, described resistance-capacitance circuit 10 comprises capacitor C 4, resistance R 11 and rectifier bridge stack B2; Capacitor C 4 is in parallel with resistance R 11, and its one end connects the input of rectifier bridge stack B2, and the other end connects the L line of alternating current; Another input of rectifier bridge stack B2 connects the N line of alternating current.
Further, described voltage stabilizing circuit 11 comprises electrochemical capacitor CE2, resistance R 12 and voltage stabilizing didoe DZ1, three's parallel connection.
Further, described switching circuit 12 comprises rectifier diode D3 and photoelectrical coupler A1, the input of D3 negative pole access photoelectrical coupler A1.
Adopt after technique scheme, the utility model can be avoided, in the phenomenon that lamp pearl stroboscopic just extinguishes for several times gradually while being also open circuit of turning off the light, having extended the useful life of LED lamp when saves energy effectively.
Brief description of the drawings
Fig. 1 is driving power circuit schematic diagram;
Fig. 2 is MCU control circuit schematic diagram;
Fig. 3 is quick breaking circuit schematic diagram;
Fig. 4 is the overall circuit schematic diagram of the utility model power-off without stroboscopic second gear Dimmable LED driving power;
Fig. 5 is the circuit theory diagrams that do not add the second gear Dimmable LED driving power of quick breaking circuit.
Embodiment
Below in conjunction with the drawings and specific embodiments, the utility model is described in further detail.
embodiment: a kind of power-off, without stroboscopic second gear Dimmable LED driving power, as shown in Fig. 1 ~ 4, comprising:
Driving power circuit, the positive pole of connection LED lamp, and output voltage signal; It comprises switch 1, current rectifying and wave filtering circuit 2, IC power supply circuits 3, the former limit of IC feedback circuit 4 and output rectifier and filter 5.Wherein, current rectifying and wave filtering circuit 2, comprises rectifier bridge stack B1 and electrochemical capacitor CE1.IC power supply circuits 3, comprise resistance R 7 and R8 and capacitor C 2, three's series connection.The former limit of IC feedback circuit 4, comprises and adjusts leakage resistance R9, chip U1(BP3122), transformer T1, circuit structure adopts the typical application circuit of BP3122.Output rectifier and filter 5, comprises fast recovery diode D2, capacitor C 3 and R10 parallel connection, and one end connects output LED+, other end ground connection.
Access civil power in the time that K1 is closed time, civil power is IC power supply through current rectifying and wave filtering circuit 2 and IC power supply circuits 3, U1(BP3122) start, the former limit of IC feedback circuit 4 has high frequency output electric current, through output rectifier and filter 5 output currents, V+ end (connecting anodal one end of LED lamp) has output.In the time that K1 shutoff does not have civil power access, whole driving power circuit no-output, i.e. V+ end no-output.
MCU control circuit, comprise normal mode circuit 9 and night-light mode circuit 8, receive the voltage signal from drive circuit, be connected the negative pole of LED lamp with night-light mode circuit 8 by normal mode circuit 9, and can be according to complete the switching of normal mode circuit 9 with night-light mode circuit 8 from the voltage signal of drive circuit; It comprises power supply circuits 7, time control circuit 6, normal mode circuit 9, night-light mode circuit 8 and MCU circuit part.Power supply circuits 7, for the power supply of MCU circuit part, comprise voltage-stabiliser tube Q3 and rectifier diode D1; 3. the input of voltage-stabiliser tube Q3 meets the LED+ of power circuit, 2. holds ground connection, the output diode D1 that 1. connects.Time control circuit 6, is used for controlling external switch interlude length, by resistance R 1, and capacitor C 1 earth, the negative pole of an other termination D1.Normal mode circuit 9, in the time of this part of conducting, whole LED power supply output conducting, normally lights, and comprises R5 and metal-oxide-semiconductor Q2; The G utmost point of R5 one end and Q2 is connected to R2, and the S utmost point of the other end and Q2 is connected to ground, and the D end of Q2 is connected to the negative pole LED-of LED lamp pearl.Night-light mode circuit 8, during by this part of conducting, whole LED lamp becomes night-light pattern, comprises resistance R 4, metal-oxide-semiconductor Q1, resistance R 6; The G utmost point of R4 one end and Q1 is connected to R3, and the other end is connected with the S utmost point of Q1 and ground connection, and resistance R 6 connects the negative pole LED ﹣ of LED lamp pearl.
Access civil power in the time that K1 is closed time, the job description of driving power circuit part described above: civil power is IC power supply through current rectifying and wave filtering circuit 2 and IC power supply circuits 3, U1(BP3122) start, the former limit of IC feedback circuit 4 has high frequency output electric current, through output rectifier and filter 5 output currents, V+ end has output.3. the end of power supply circuits 7 has the input signal of V+, is MCU (U2) power supply through rectifier diode D1, starts charging to the C1 of time control circuit 6 simultaneously; MCU(U2) 7 ends are output as high level, by R5 dividing potential drop, trigger the grid of metal-oxide-semiconductor Q2, Q2 conducting; MCU(U2) 5 end output low levels, not conducting of Q1.Thereby whole LED power supply output conducting, normally lights.In the time that K1 turn-offs without civil power access outside, the job description of driving power circuit part described above is known, and V+ is no-output now.Power supply circuits 7 are not also exported, and now, time control circuit 6, within certain turn-off time (conventionally in 3S), because C1 discharges by R1, continues to have maintained MCU(U2) power supply, Q2 holds still in conducting state, not conducting of Q1.When in certain turn-off time (conventionally in 3S) again closed K1, while accessing civil power for the second time, MCU(U2) 1 end detects the high level that 1. output of power supply circuits 4 hold, now MCU(U2) 5 ends be output as high level, by R3 dividing potential drop, trigger the grid of metal-oxide-semiconductor Q1, Q1 conducting, now optocoupler 3., 4. end is also in conducting, resistance R 6 is just connected in circuit with LED lamp pearl, due to the current limliting dividing potential drop of R6, the electric current that flows through LED lamp pearl reduces (by the measurement of concrete power circuit, between 0.02 to 0.1 times when its current value is normal current), LED lamp is in night-light pattern.
As innovative point of the present utility model and the technical scheme that will protect, on the basis of second gear Dimmable LED driving power circuit, increased quick breaking circuit, it is connected with MCU control circuit, and can be in the time of power-off fast shut-off LED driving power.Breaking circuit comprises fast: resistance-capacitance circuit 10, alternating current is carried out to step-down, and rectification is that direct current is supplied with voltage stabilizing circuit 11; Voltage stabilizing circuit 11, the direct current that resistance-capacitance circuit 10 is provided carries out filtering and voltage stabilizing, and level and smooth stable DC voltage is supplied with to switching circuit 12; Switching circuit 12, the level and smooth stable DC voltage being provided taking voltage stabilizing circuit 11, as electric energy, is fulfiled switching function.
Resistance-capacitance circuit 10 comprises capacitor C 4, resistance R 11 and rectifier bridge stack B2; Capacitor C 4 is in parallel with resistance R 11, and its one end connects the input of rectifier bridge stack B2, and the other end connects the L line of alternating current; Another input of rectifier bridge stack B2 connects the N line of alternating current.Voltage stabilizing circuit 11 comprises electrochemical capacitor CE2, resistance R 12 and voltage stabilizing didoe DZ1, three's parallel connection; The two poles of the earth of voltage stabilizing circuit 11 connect respectively the positive and negative polarities of rectifier bridge stack DC output end.Switching circuit 12 comprises rectifier diode D3 and photoelectrical coupler A1, the positive pole of D3 connects the negative pole of voltage stabilizing didoe DZ1, the input of the negative pole access photoelectrical coupler A1 of D3, another input of photoelectrical coupler A1 connects the positive pole of voltage stabilizing didoe DZ1, the 3. end of photoelectrical coupler A1 is connected to the D end of the metal-oxide-semiconductor Q1 of night-light mode circuit 8, the 4. end of photoelectrical coupler A1 is connected to resistance R 6 one end of night-light mode circuit 8, the other end of resistance R 6 is connected to the negative pole LED ﹣ of LED lamp pearl, also be that 3. photoelectrical coupler A1 holds by it and 4. hold and be connected between metal-oxide-semiconductor Q1 and resistance R 6.
Access civil power in the time that K1 is closed time, 220V alternating current is through resistance-capacitance circuit, by C4, R11 pressure drop, through rectifier bridge stack B2, become the direct current of pulsation, pass through again voltage stabilizing circuit, become more level and smooth direct current by electrochemical capacitor CE2 filtering, by the direct voltage of voltage stabilizing didoe DZ1 stable output in parallel, then pass through the D3 rectification in switching circuit, add the signal of telecommunication to the input of photoelectrical coupler A1, thus photoelectrical coupler A1 output conducting (conducting direction 4. → 3.).In the time that K1 turn-offs without civil power access outside, resistance-capacitance circuit 10 is without input, and in voltage stabilizing circuit 11, the electric weight of CE2 sparks through R12, thereby the optocoupler input no signal of switching circuit 12, not conducting of output, 4. → 3. in cut-off state, also block night-light mode circuit 8 in figure bis-with regard to moment.LED lamp pearl moment is extinguished, effectively solved while thering is no quick breaking circuit, under night-light pattern, turn off LED lamp, the defect that LED lamp pearl stroboscopic extinguishes for several times gradually.
The above is only preferred embodiments of the present utility model, and the equivalence of doing according to structure, feature and principle described in the utility model patent claim therefore all changes or modifies, and is included in the utility model patent claim.
Claims (5)
1. power-off, without a stroboscopic second gear Dimmable LED driving power, comprising: driving power circuit, the positive pole of connection LED lamp, and output voltage signal; MCU control circuit, receives the voltage signal from drive circuit, and can switch normal mode circuit 9 and night-light mode circuit 8 according to voltage signal; It is characterized in that: also comprise, be connected with MCU control circuit, and can be in the time of power-off the quick breaking circuit of fast shut-off LED driving power.
2. power-off according to claim 1, without stroboscopic second gear Dimmable LED driving power, is characterized in that: described quick breaking circuit comprises: resistance-capacitance circuit 10, alternating current is carried out to step-down, and rectification is that direct current is supplied with voltage stabilizing circuit 11; Voltage stabilizing circuit 11, the direct current that resistance-capacitance circuit 10 is provided carries out filtering and voltage stabilizing, and level and smooth stable DC voltage is supplied with to switching circuit 12; Switching circuit 12, the level and smooth stable DC voltage being provided taking voltage stabilizing circuit 11, as electric energy, is fulfiled switching function.
3. power-off according to claim 2, without stroboscopic second gear Dimmable LED driving power, is characterized in that: described resistance-capacitance circuit 10 comprises capacitor C 4, resistance R 11 and rectifier bridge stack B2; Capacitor C 4 is in parallel with resistance R 11, and its one end connects the input of rectifier bridge stack B2.
4. power-off according to claim 2, without stroboscopic second gear Dimmable LED driving power, is characterized in that: described voltage stabilizing circuit 11 comprises electrochemical capacitor CE2, resistance R 12 and voltage stabilizing didoe DZ1, three's parallel connection.
5. power-off according to claim 2, without stroboscopic second gear Dimmable LED driving power, is characterized in that: described switching circuit 12 comprises rectifier diode D3 and photoelectrical coupler A1, the input of the negative pole access photoelectrical coupler A1 of rectifier diode D3.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420137808.XU CN203872387U (en) | 2014-03-26 | 2014-03-26 | Power off non-stroboscopic second gear dimmable LED driving power supply |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420137808.XU CN203872387U (en) | 2014-03-26 | 2014-03-26 | Power off non-stroboscopic second gear dimmable LED driving power supply |
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| CN203872387U true CN203872387U (en) | 2014-10-08 |
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| CN201420137808.XU Expired - Fee Related CN203872387U (en) | 2014-03-26 | 2014-03-26 | Power off non-stroboscopic second gear dimmable LED driving power supply |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107241828A (en) * | 2017-06-15 | 2017-10-10 | 佛山电器照明股份有限公司 | A kind of phase-cut dimming LED circuit with small night lamp function |
| CN110351931A (en) * | 2019-08-09 | 2019-10-18 | 浙江阳光美加照明有限公司 | A kind of LED drive circuit with small night lamp function |
| CN110730539A (en) * | 2019-10-15 | 2020-01-24 | 横店集团得邦照明股份有限公司 | Silicon controlled rectifier dimming linear non-stroboscopic LED circuit and implementation method thereof |
-
2014
- 2014-03-26 CN CN201420137808.XU patent/CN203872387U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107241828A (en) * | 2017-06-15 | 2017-10-10 | 佛山电器照明股份有限公司 | A kind of phase-cut dimming LED circuit with small night lamp function |
| CN107241828B (en) * | 2017-06-15 | 2019-08-16 | 佛山电器照明股份有限公司 | A kind of phase-cut dimming LED circuit with small night lamp function |
| CN110351931A (en) * | 2019-08-09 | 2019-10-18 | 浙江阳光美加照明有限公司 | A kind of LED drive circuit with small night lamp function |
| CN110730539A (en) * | 2019-10-15 | 2020-01-24 | 横店集团得邦照明股份有限公司 | Silicon controlled rectifier dimming linear non-stroboscopic LED circuit and implementation method thereof |
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| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20141008 Termination date: 20180326 |
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| CF01 | Termination of patent right due to non-payment of annual fee |