CN205430679U - High stability direct current LED power supply circuit - Google Patents
High stability direct current LED power supply circuit Download PDFInfo
- Publication number
- CN205430679U CN205430679U CN201620108985.4U CN201620108985U CN205430679U CN 205430679 U CN205430679 U CN 205430679U CN 201620108985 U CN201620108985 U CN 201620108985U CN 205430679 U CN205430679 U CN 205430679U
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- resistance
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- diode
- rectifier bridge
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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
The utility model discloses a high stability direct current LED power supply circuit, including resistance R11, rectifier bridge T, chip IC1 and transformer W, electric capacity C3 and 220V alternating current are connected to resistance R11's one end, and electric capacity C3's the other end and rectifier bridge T's port 1 are connected to resistance R11's the other end, rectifier bridge T's port 2 connecting resistance R1, resistance R3, diode D3's positive pole and transformer W's winding N1, the other ends of rectifier bridge T's 3 connection 220V alternating currents of port. The utility model discloses high stability direct current LED power supply circuit simple structure, components and parts are few, adopt MC33262 power control chip as core parts, increase LED power supply voltage's stability, reduce circuit interfering, therefore have stable performance, with low costs and convenient to use's advantage.
Description
Technical field
This utility model relates to a kind of power circuit, specifically a kind of high stability direct-current LED power circuit.
Background technology
Along with the negative effect caused by Global Greenhouse Effect constantly manifests, in the world every country all using energy-saving and emission-reduction as the major issue that be must take in native economic development, the emerging power-saving technology that LED illumination technology is arisen at the historic moment just under this background.LED illumination product has had been applied in daily life, along with developing rapidly of LED at present.The conventional light source that now white LED light source is compared has life-span length, solid state lighting is hardly damaged, specular removal, without advantages such as hydrargyrum environmental protection, antidetonations, following will become third generation light source, another revolution of lighting field will be brought.The power circuit of LED directly determines functional performance and the service life of LED, and the existing most structure of LED power circuit is complicated, poor stability, causes the service life reduction of LED lamp.
Utility model content
The purpose of this utility model is to provide a kind of high stability direct-current LED power circuit, with the problem solving to propose in above-mentioned background technology.
For achieving the above object, the following technical scheme of this utility model offer:
nullA kind of high stability direct-current LED power circuit，Including resistance R11、Rectifier bridge T、Chip IC 1 and transformator W，One end of described resistance R11 connects electric capacity C3 and 220V alternating current，The other end of resistance R11 connects the other end and the port 1 of rectifier bridge T of electric capacity C3，The port 2 of rectifier bridge T connects resistance R1、Resistance R3、The anode of diode D3 and the winding N1 of transformator W，The port 3 of rectifier bridge T connects the other end of 220V alternating current，The other end of resistance R1 connects resistance R2、The pin 3 of electric capacity C2 and chip IC 1，The other end of electric capacity C1 connects the other end the ground connection of resistance R2，The pin 8 of chip IC 1 connects the negative electrode of diode D2、The other end of resistance R3 and electric capacity C2，The anode of diode D2 connects resistance R4，The winding N2 and resistance R5 of the other end connection transformer W of resistance R4，The other end ground connection of the winding N2 of transformator W，The negative electrode of diode D3 connects the negative electrode of diode D1、Resistance R10 and LED lamp H，The other end of the winding N1 of transformator W connects anode and the drain electrode of metal-oxide-semiconductor Q1 of diode D1，The other end of resistance R5 connects the pin 5 of chip IC 1，The pin 1 of chip IC 1 connects resistance R6，The other end of resistance R6 connects the other end of resistance R10 and a fixing end of potentiometer RP1，The pin 7 of chip IC 1 connects resistance R7，The other end of resistance R7 connects the grid of metal-oxide-semiconductor Q1，The source electrode of metal-oxide-semiconductor Q1 connects resistance R8 and resistance R9，The other end of resistance R8 connects the pin 4 of chip IC 1，Another fixing end of potentiometer RP1 connects sliding end of potentiometer RP1 and the other end of LED lamp H ground connection，The model of described chip IC 1 is MC33262.
As preferred version of the present utility model: described LED lamp H is in series by multiple light emitting diodes.
Compared with prior art, the beneficial effects of the utility model are: this utility model high stability direct-current LED circuit construction of electric power is simple, components and parts are few, use MC33262 power supply control chip as core parts, increase the stability of LED supply voltage, reduce circuit interference, therefore there is stable performance, low cost and advantage easy to use.
Accompanying drawing explanation
Fig. 1 is the circuit diagram of high stability direct-current LED power circuit.
Detailed description of the invention
Below in conjunction with the accompanying drawing in this utility model embodiment, the technical scheme in this utility model embodiment is clearly and completely described, it is clear that described embodiment is only a part of embodiment of this utility model rather than whole embodiments.Based on the embodiment in this utility model, the every other embodiment that those of ordinary skill in the art are obtained under not making creative work premise, broadly fall into the scope of this utility model protection.
nullRefer to Fig. 1，A kind of high stability direct-current LED power circuit，Including resistance R11、Rectifier bridge T、Chip IC 1 and transformator W，One end of described resistance R11 connects electric capacity C3 and 220V alternating current，The other end of resistance R11 connects the other end and the port 1 of rectifier bridge T of electric capacity C3，The port 2 of rectifier bridge T connects resistance R1、Resistance R3、The anode of diode D3 and the winding N1 of transformator W，The port 3 of rectifier bridge T connects the other end of 220V alternating current，The other end of resistance R1 connects resistance R2、The pin 3 of electric capacity C2 and chip IC 1，The other end of electric capacity C1 connects the other end the ground connection of resistance R2，The pin 8 of chip IC 1 connects the negative electrode of diode D2、The other end of resistance R3 and electric capacity C2，The anode of diode D2 connects resistance R4，The winding N2 and resistance R5 of the other end connection transformer W of resistance R4，The other end ground connection of the winding N2 of transformator W，The negative electrode of diode D3 connects the negative electrode of diode D1、Resistance R10 and LED lamp H，The other end of the winding N1 of transformator W connects anode and the drain electrode of metal-oxide-semiconductor Q1 of diode D1，The other end of resistance R5 connects the pin 5 of chip IC 1，The pin 1 of chip IC 1 connects resistance R6，The other end of resistance R6 connects the other end of resistance R10 and a fixing end of potentiometer RP1，The pin 7 of chip IC 1 connects resistance R7，The other end of resistance R7 connects the grid of metal-oxide-semiconductor Q1，The source electrode of metal-oxide-semiconductor Q1 connects resistance R8 and resistance R9，The other end of resistance R8 connects the pin 4 of chip IC 1，Another fixing end of potentiometer RP1 connects sliding end of potentiometer RP1 and the other end of LED lamp H ground connection，The model of described chip IC 1 is MC33262.
LED lamp H is in series by multiple light emitting diodes.
Operation principle of the present utility model is: civil power obtains Rectified alternating current through power-supply filter and commutator.Electric current is by startup resistance R3 when C2 charges to lOV, and IC1 starts working.DC pulse moving voltage after rectification in the dividing potential drop of R2 as sampled signal through the 3 foot defeated people multiplier of IC1.VD dividing potential drop on R10 and RP1 transports to the anti-phase input end of error amplifier through 1 foot, compares one direct-flow error voltage of output after amplification with reference voltage, and the most defeated people is to multiplier simultaneously.On source resistance R9, voltage signal is converted to by the electric current of metal-oxide-semiconductor Q1,4 feet of defeated people to IC1, and compare with the output voltage of multiplier.Sinusoidally passing through from the zero to peak value with input voltage, the threshold value of 7 feet of the output voltage control IC1 of multiplier, so that the peak point current of Q1 follows the tracks of AC defeated people voltage, the load causing correcting circuit is resistive.Due to the control action of chip IC 1, defeated people's electric current is made tightly to follow AC-input voltage and change, in smooth sine wave.Meanwhile, this circuit is again a kind of booster type switching power supply, makes the power of LED and luminous flux will not change with the fluctuation of line voltage.
Claims (2)
- null1. a high stability direct-current LED power circuit，Including resistance R11、Rectifier bridge T、Chip IC 1 and transformator W，It is characterized in that，One end of described resistance R11 connects electric capacity C3 and 220V alternating current，The other end of resistance R11 connects the other end and the port 1 of rectifier bridge T of electric capacity C3，The port 2 of rectifier bridge T connects resistance R1、Resistance R3、The anode of diode D3 and the winding N1 of transformator W，The port 3 of rectifier bridge T connects the other end of 220V alternating current，The other end of resistance R1 connects resistance R2、The pin 3 of electric capacity C2 and chip IC 1，The other end of electric capacity C1 connects the other end the ground connection of resistance R2，The pin 8 of chip IC 1 connects the negative electrode of diode D2、The other end of resistance R3 and electric capacity C2，The anode of diode D2 connects resistance R4，The winding N2 and resistance R5 of the other end connection transformer W of resistance R4，The other end ground connection of the winding N2 of transformator W，The negative electrode of diode D3 connects the negative electrode of diode D1、Resistance R10 and LED lamp H，The other end of the winding N1 of transformator W connects anode and the drain electrode of metal-oxide-semiconductor Q1 of diode D1，The other end of resistance R5 connects the pin 5 of chip IC 1，The pin 1 of chip IC 1 connects resistance R6，The other end of resistance R6 connects the other end of resistance R10 and a fixing end of potentiometer RP1，The pin 7 of chip IC 1 connects resistance R7，The other end of resistance R7 connects the grid of metal-oxide-semiconductor Q1，The source electrode of metal-oxide-semiconductor Q1 connects resistance R8 and resistance R9，The other end of resistance R8 connects the pin 4 of chip IC 1，Another fixing end of potentiometer RP1 connects sliding end of potentiometer RP1 and the other end of LED lamp H ground connection，The model of described chip IC 1 is MC33262.
- A kind of high stability direct-current LED power circuit the most according to claim 1, it is characterised in that described LED lamp H is in series by multiple light emitting diodes.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620108985.4U CN205430679U (en) | 2016-02-03 | 2016-02-03 | High stability direct current LED power supply circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620108985.4U CN205430679U (en) | 2016-02-03 | 2016-02-03 | High stability direct current LED power supply circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205430679U true CN205430679U (en) | 2016-08-03 |
Family
ID=56540916
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620108985.4U Expired - Fee Related CN205430679U (en) | 2016-02-03 | 2016-02-03 | High stability direct current LED power supply circuit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205430679U (en) |
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2016
- 2016-02-03 CN CN201620108985.4U patent/CN205430679U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20160803 Termination date: 20170203 |