CN207184869U - A kind of LED constant-current driving power supply - Google Patents
A kind of LED constant-current driving power supply Download PDFInfo
- Publication number
- CN207184869U CN207184869U CN201720874523.8U CN201720874523U CN207184869U CN 207184869 U CN207184869 U CN 207184869U CN 201720874523 U CN201720874523 U CN 201720874523U CN 207184869 U CN207184869 U CN 207184869U
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- resistance
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- current driving
- power supply
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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
- Y02B20/30—Semiconductor lamps, e.g. solid state lamps [SSL] light emitting diodes [LED] or organic LED [OLED]
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- Circuit Arrangement For Electric Light Sources In General (AREA)
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Abstract
It the utility model is related to a kind of LED constant-current driving power supply, including rectification circuit, multiple aluminum electrolytic condensers being connected in parallel with rectification circuit, the discharge circuit being connected with aluminum electrolytic condenser, the constant current driver circuit for LED being connected with discharge circuit, the input of rectification circuit is connected with the live wire and zero line of input power respectively, the positive pole of aluminum electrolytic condenser is connected with rectification circuit output end positive pole, and the negative pole of aluminum electrolytic condenser is connected with rectification circuit output end negative pole；Use the technical solution of the utility model, the ripple in driving power is filtered out using by the filter circuit that multiple aluminium electrolutic capacitors form, aluminium electrolutic capacitor has the characteristics that capacity is big, resistance to elevated temperatures is good, service life is long, substantially increase the overall service life of LED drive power, make LED lamp keep stable to light, under brightness conditions in holding, reduce LED and the probability flashed occur.
Description
Technical field
It the utility model is related to power technique fields, more particularly to a kind of LED constant-current driving power supply.
Background technology
With the fast development of LED technology, people, which are intended to use, does not change profile, more environmentally friendly, energy-conservation LED replacement
It is traditional equidistant, decorative lighting demand had both been met, the conversion efficiency that electric energy is converted to luminous energy has been also improved, extends light fixture
Service life, with the extensive use of LED lamp, requirement of the people to LED lamp illumination system also increasingly improves, in LED
Have in illuminator, driving power plays a crucial role to the life-span of LED, and in general, the normal service life of LED lamps is remote
Higher than the life-span of driving power, therefore, the influence of the stability of LED drive power to the service life of LED is very big, to extend
The service life of LED lamp, it is desired to which no matter under any circumstance LED drive power, can keep constant output current, that is, work as
During by input voltage variation, temperature change and some other interference, the output ripple electric current of LED drive power is allowing
Within the scope of, in the prior art, LED drive power typically uses Switching Power Supply and linear IC power supplys, first device of Switching Power Supply
Number of packages amount is more, and circuit is complicated, and conversion efficiency is not high, and radiating is bad, while also stroboscopic phenomenon, and first device of linear IC power supplys
Number of packages amount is few, and circuit is simple, small volume, and can be integrated in LED lamp in same printed board, further reduces product body
Product, and it is preferable to radiate, stable performance, for example, the patent document of Publication No. " CN205883647U ", discloses one kind without stroboscopic
LED linear constant-current drive circuit, it includes rectification circuit, linear constant current drive circuit, PFC and frequent flashing control
Circuit, load include LED, and the rectification circuit is connected with PFC and frequent flashing control circuit, LED simultaneously, the LED
Connected with linear constant current drive circuit, the PFC and frequent flashing control circuit and LED, linear constant current drive circuit
Series circuit is in parallel；Using the technical scheme of the invention, alleviated using linear constant current drive circuit in LED running
The problem of stroboscopic, still, the ripple in input power is not handled in the invention, when input power is interfered,
Operation of the ripple to LED still generates large effect, have impact on the service life and using effect of LED.
Utility model content
In order to solve the above technical problems, the utility model provides a kind of LED constant-current driving power supply.
The utility model provides a kind of LED constant-current driving power supply, including rectification circuit, multiple in parallel with rectification circuit
The aluminium electrolutic capacitor of connection, the discharge circuit being connected with aluminium electrolutic capacitor, the LED constant current driving electricity being connected with discharge circuit
Road, the input of the rectification circuit are connected with the live wire and zero line of input power respectively, the positive pole of the aluminium electrolutic capacitor
It is connected with the rectification circuit output end positive pole, the negative pole of the aluminium electrolutic capacitor connects with the rectification circuit output end negative pole
Connect.
The quantity of the aluminium electrolutic capacitor is 3.
The discharge circuit includes the resistance R3 and resistance R4 being connected in series, resistance R3 one end and the alminium electrolytic condenser
The first end connection of device, the resistance R3 other end are connected with resistance R4 one end, the resistance R4 other end and aluminium electroloysis electricity
The second end connection of container.
The resistance of the resistance R3 and resistance R4 are equal.
The constant current driver circuit for LED includes LED constant current driving chip and adjustment resistance, the electricity of LED constant current driving chip
The output head anode for flowing input and discharge circuit connects, and adjusts one end of resistance and is adjusted with the electric current of LED constant current driving chip
End connection, the other end for adjusting resistance are connected with the output head anode of the discharge circuit, the earth terminal of LED constant current driving chip
As the negative pole of output end of the constant current driver circuit for LED, the negative pole of output end of the discharge circuit is as the LED constant current
The output head anode of drive circuit.
The adjustment resistance is Chip-R.
The rectification circuit includes rectification chip, the first input end of rectification chip and the second input respectively with live wire and
Zero line connects, the output end of the output end of rectification chip as the rectification circuit.
The rectification chip is model MB6S rectification chip.
The LED constant-current driving power supply also includes the guarantor being connected between the live wire and the rectification circuit input end
Dangerous resistance.
The input power of the constant current driver circuit for LED is the alternating current that voltage effective value is 220 volts.
The beneficial effects of the utility model are：Using LED constant-current driving power supply provided by the utility model, including
Rectification circuit, multiple aluminium electrolutic capacitors being connected in parallel with rectification circuit, the discharge circuit being connected with aluminium electrolutic capacitor, with
The constant current driver circuit for LED of discharge circuit connection, the input of the rectification circuit live wire and zero line with input power respectively
Connection, the positive pole of the aluminium electrolutic capacitor are connected with the rectification circuit output end positive pole, and the aluminium electrolutic capacitor is born
Pole is connected with the rectification circuit output end negative pole；Using the technical solution of the utility model, using by multiple alminium electrolytic condensers
The filter circuit of device composition filters out to the ripple in driving power, and aluminium electrolutic capacitor has that capacity is big, resistance to elevated temperatures
Good, the features such as service life is long, aluminium electrolutic capacitor under 75 DEG C of hot conditions in use, its life-span still can reach 60000h,
Therefore the overall service life of the utility model LED drive power is substantially increased, by this real new application in being 8W for power
The power supply of Military Shelter LED lamp, after tested, LED light fixtures keep stable and lighted, no stroboscopic phenomenon, and brightness is moderate, application
Work well.
Brief description of the drawings
Fig. 1 is the utility model circuit connection diagram.
Embodiment
The technical solution of the utility model is described further below in conjunction with accompanying drawing, but required protection domain is not
It is confined to described；
The utility model provides a kind of LED constant-current driving power supply, as shown in figure 1, including rectification circuit, it is multiple with it is whole
Aluminium electrolutic capacitor that current circuit is connected in parallel, the discharge circuit being connected with aluminium electrolutic capacitor, the LED being connected with discharge circuit
Constant-current drive circuit, the input of the rectification circuit are connected with the live wire and zero line of input power respectively, the aluminium electroloysis electricity
The positive pole of container is connected with the rectification circuit output end positive pole, and the negative pole of the aluminium electrolutic capacitor and the rectification circuit are defeated
Go out to hold negative pole to connect.Using the technical solution of the utility model, the filter circuit pair being made up of multiple aluminium electrolutic capacitors is used
Ripple in driving power is filtered out, and aluminium electrolutic capacitor has the spies such as capacity is big, resistance to elevated temperatures is good, service life length
Point, in use, its life-span still can reach 60000h under 75 DEG C of hot conditions, aluminium electrolutic capacitor typically makes aluminium electrolutic capacitor
By the use of aluminium as the positive pole of capacitor and negative pole, using liquid electrolyte, make aluminium electrolutic capacitor that there is preferable heat dispersion,
Therefore the overall service life of the utility model LED drive power is substantially increased, by this real new application in being 8W for power
The power supply of Military Shelter LED light fixtures, after tested, LED lamp keeps stable and lighted, no stroboscopic phenomenon, and brightness is moderate, application
Work well.
The quantity of the aluminium electrolutic capacitor is 3.Using the technical solution of the utility model, alternating current first passes around whole
Current circuit rectification, the DC voltage by AC rectification for pulsation.After the completion of rectification, by being made up of multiple aluminium electrolutic capacitors
Filter circuit filtering process, be filtered out the alternating component in unidirectional pulsating volage, the more smooth DC voltage of output,
Aluminium electrolutic capacitor is 400 volts preferably using voltage, and capacity is 3.3 μ f aluminium electrolutic capacitor, preferably aluminium electrolutic capacitor
Quantity be 3, by more electrical power storages in aluminium electrolutic capacitor.
The discharge circuit includes the resistance R3 and resistance R4 being connected in series, resistance R3 one end and the alminium electrolytic condenser
The first end connection of device, the resistance R3 other end are connected with resistance R4 one end, the resistance R4 other end and aluminium electroloysis electricity
The second end connection of container.Using the technical solution of the utility model, input power successively after over commutation, filtering process, then
Electric capacity is discharged by the discharge resistance by series resistance R3 and R4 group, makes more smooth direct current after treatment
Pressure passes through resistance R3 and resistance R4 outputs, and resistance R3 and resistance R4 are the resistance size of fixed value resistance, resistance R3 and resistance R4
The size of output voltage is determined, meanwhile, resistance R3 and resistance R4 play the work of further voltage stabilizing and current limliting to output voltage
With, make output voltage keep it is constant, preferably resistance R3 and resistance R4 resistance is equal, preferably 470 kilohms.
The resistance of the resistance R3 and resistance R4 are equal.Using the technical solution of the utility model, resistance R3 and resistance R4
Main function be that aluminium electrolutic capacitor is discharged, it is on the other hand, preferably electric to the further voltage stabilizing of out-put supply and current limliting
Resistance R3 and resistance R4 resistance is equal, can so reduce resistor volume shared in constant current driver circuit for LED, part electricity
The heat energy that resistance R3 and resistance R4 surfaces can be converted to is distributed into air, when resistance R3 and resistance R4 resistances are equal, makes driving
Power supply heat sinking is uniform, and compact-sized.
The constant current driver circuit for LED includes LED constant current driving chip and adjustment resistance, the electricity of LED constant current driving chip
The output head anode for flowing input and discharge circuit connects, and adjusts one end of resistance and is adjusted with the electric current of LED constant current driving chip
End connection, the other end for adjusting resistance are connected with the output head anode of the discharge circuit, the earth terminal of LED constant current driving chip
As the negative pole of output end of the constant current driver circuit for LED, the negative pole of output end of the discharge circuit is as the LED constant current
The output head anode of drive circuit.Using the technical solution of the utility model, the input power after above-mentioned processing is further
Using with linear voltage stabilization function constant current drive control chip out-put supply, constant current driving is realized, LED constant current driving chip is excellent
It is a kind of single channel LED constant current drive control chip to select model SM2082D, SM2082D chip, the output current of the chip
It can be adjusted by the resistance size of external adjustment resistance, output current does not become with the change of chip output mouth voltage
Change, there is preferable constant current performance.
The adjustment resistance is Chip-R.Using the technical solution of the utility model, the effect for adjusting resistance is pair
The size of the output current of chip is controlled, and it is Chip-R preferably to adjust resistance, reduces the volume of component, makes
Constant current driver circuit for LED is compact-sized, is easily installed, and it is 22 ohm preferably to adjust resistance, when constant current driver circuit for LED is set
When being set to two-way output, outputting current steadily is 8W per power output all the way, constant current driver circuit for LED has in 26mA ± 5%
It is compact-sized, small volume, the features such as cost is low.
The rectification circuit includes rectification chip, the first input end of rectification chip and the second input respectively with live wire and
Zero line connects, the output end of the output end of rectification chip as the rectification circuit.
The rectification chip is model MB6S rectification chip.Use the technical solution of the utility model, rectification chip
Preferably model MB6S rectification chip, MB6S are a kind of SMD rectifying devices using using SOIC packing forms, are entered
One step reduces the overall volume of LED constant-current driving power supply.
The LED constant-current driving power supply also includes the guarantor being connected between the live wire and the rectification circuit input end
Dangerous resistance.Using the technical solution of the utility model, the main function for insuring resistance is to LED constant-current driving power supply entirety
Carry out current protection.
The input power of the constant current driver circuit for LED is the alternating current that voltage effective value is 220 volts.Use this practicality
New technical scheme, input supply voltage virtual value are preferably 220 volts, supply frequency 50Hz, and LED constant current is driven
Dynamic power supply uses component seldom, and when with two-way constant current output, its overall volume is only 120mm × 13mm, is preferably made
By the use of aluminium base as printed board, it is easy to use caused heat in driving power operation to be distributed by aluminium base printed board to air
In, to improve the heat dispersion of LED constant-current driving power supply.
Claims (10)
- A kind of 1. LED constant-current driving power supply, it is characterised in that：It is connected in parallel including rectification circuit, multiple and rectification circuit Aluminium electrolutic capacitor, the discharge circuit being connected with aluminium electrolutic capacitor, the constant current driver circuit for LED being connected with discharge circuit, institute The input for stating rectification circuit is connected with the live wire and zero line of input power respectively, the positive pole of the aluminium electrolutic capacitor with it is described Rectification circuit output end positive pole is connected, and the negative pole of the aluminium electrolutic capacitor is connected with the rectification circuit output end negative pole.
- A kind of 2. LED constant-current driving power supply as claimed in claim 1, it is characterised in that：The number of the aluminium electrolutic capacitor Amount is 3.
- A kind of 3. LED constant-current driving power supply as claimed in claim 1, it is characterised in that：The discharge circuit includes series connection The resistance R3 and resistance R4 of connection, resistance R3 one end are connected with the first end of the aluminium electrolutic capacitor, and resistance R3's is another End is connected with resistance R4 one end, and the resistance R4 other end is connected with the second end of the aluminium electrolutic capacitor.
- A kind of 4. LED constant-current driving power supply as claimed in claim 3, it is characterised in that：The resistance R3's and resistance R4 Resistance is equal.
- A kind of 5. LED constant-current driving power supply as claimed in claim 1, it is characterised in that：The constant current driver circuit for LED bag Include LED constant current driving chip and adjustment resistance, the current input terminal of LED constant current driving chip and the output head anode of discharge circuit Connection, adjusts one end of resistance and is connected with the electric current adjustment end of LED constant current driving chip, the other end for adjusting resistance is put with described The output head anode connection of circuit, the output end of the earth terminal of LED constant current driving chip as the constant current driver circuit for LED Negative pole, the output head anode of the negative pole of output end of the discharge circuit as the constant current driver circuit for LED.
- A kind of 6. LED constant-current driving power supply as claimed in claim 5, it is characterised in that：The adjustment resistance is paster electricity Resistance.
- A kind of 7. LED constant-current driving power supply as claimed in claim 1, it is characterised in that：The rectification circuit includes rectification Chip, the first input end of rectification chip and the second input are connected with live wire and zero line respectively, and the output end of rectification chip is made For the output end of the rectification circuit.
- A kind of 8. LED constant-current driving power supply as claimed in claim 7, it is characterised in that：The rectification chip is model MB6S rectification chip.
- A kind of 9. LED constant-current driving power supply as claimed in claim 1, it is characterised in that：The LED constant-current driving power supply Also include the insurance resistance being connected between the live wire and the rectification circuit input end.
- A kind of 10. LED constant-current driving power supply as described in any one of claim 1 to 9, it is characterised in that：The LED constant current The input power of drive circuit is the alternating current that voltage effective value is 220 volts.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720874523.8U CN207184869U (en) | 2017-07-19 | 2017-07-19 | A kind of LED constant-current driving power supply |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720874523.8U CN207184869U (en) | 2017-07-19 | 2017-07-19 | A kind of LED constant-current driving power supply |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207184869U true CN207184869U (en) | 2018-04-03 |
Family
ID=61736820
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720874523.8U Expired - Fee Related CN207184869U (en) | 2017-07-19 | 2017-07-19 | A kind of LED constant-current driving power supply |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207184869U (en) |
-
2017
- 2017-07-19 CN CN201720874523.8U patent/CN207184869U/en not_active Expired - Fee Related
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20180403 |
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| CF01 | Termination of patent right due to non-payment of annual fee |