CN202231908U - Large power LED lamp constant-current pulse driven circuit - Google Patents
Large power LED lamp constant-current pulse driven circuit Download PDFInfo
- Publication number
- CN202231908U CN202231908U CN2011203120948U CN201120312094U CN202231908U CN 202231908 U CN202231908 U CN 202231908U CN 2011203120948 U CN2011203120948 U CN 2011203120948U CN 201120312094 U CN201120312094 U CN 201120312094U CN 202231908 U CN202231908 U CN 202231908U
- Authority
- CN
- China
- Prior art keywords
- current
- constant
- light source
- power led
- led light
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Images
Landscapes
- Circuit Arrangement For Electric Light Sources In General (AREA)
Abstract
The utility model discloses a large power LED lamp constant-current pulse driven circuit, comprising a rectification bridge, an alternative current power supply connected with an alternative current input end of the rectification bridge, a controllable constant-current diode (D) and a LED light source unit (E) in serial connection with a direct current output end of the rectification bridge, wherein a control end of the controllable constant-current diode (D) is connected with an output end of a single-chip microcomputer. The needed electronic elements are less, the circuit structure is relatively simple, the production cost is greatly reduced and the market competitiveness of products is effectively increased. The output power factor can be 95% and the electric energy conversion efficiency can be 90%. The current of the output signal is constant, the stable light flux of the large power LED lamp is effectively ensured, thereby satisfying the large power LED lamp drive requirement.
Description
Technical field
The utility model relates to a kind of driving method and circuit of LED illuminating lamp, particularly a kind of high-power LED illuminating lamp constant-current pulse method of driving and circuit.
Background technology
Because semiconductor lighting has energy saving, environmental protection, long service life, has started a upsurge that the LED illuminating lamp is researched and produced in the whole world.In high-power LED illuminating lamp used, the power factor (PF) of driving power, conversion efficiency were to influence the key factor that the LED illuminating lamp uses, and the variation of the output current of power supply can directly have influence on LED illuminating lamp output light flux and useful life.If the constant-current control circuit design is unreasonable, LED illuminating lamp output light flux is difficult to reach requirement, does not have the effect of energy efficiency, thereby suppresses the popularization of LED illuminating lamp.
The driving method and the circuit of the high-power LED illuminating lamp that uses now use the correlation technique of high frequency switch power usually, adopt the pulse modulation transformer to carry out the coupling of power supply, handle drive signal through links such as filtering at last.This Method and circuits is made up of a lot of electronic components, and structure is comparatively complicated, cost is higher, and the power output factor is lower, and the constant current effect is relatively poor, and the conversion efficiency of electric energy is relatively poor, is difficult to satisfy the high-power LED illuminating lamp development need.
Summary of the invention
The technical problem that the utility model will solve is: the circuit that provides a kind of high-power LED illuminating lamp constant-current pulse to drive; Existing LED lighting lamp power driving method and circuit structure are comparatively complicated, cost is higher, the power output factor is lower, the constant current effect is relatively poor, the relatively poor technical problem of conversion efficiency electric energy to solve, thereby overcome the deficiency of prior art.
The circuit that the high-power LED illuminating lamp constant-current pulse of the utility model drives is to constitute like this: this circuit comprises rectifier bridge; Ac input end at rectifier bridge connects AC power; Dc output end at rectifier bridge is serially connected with controlled current regulator diode and led light source unit, and the control end of controlled current regulator diode is connected with the output of single-chip microcomputer.
The model of above-mentioned single-chip microcomputer is 8052.
Above-mentioned led light source unit is to be made up of the led light source parallel connection that is cascaded more than 2 groups.
In above-mentioned every group led light source that is cascaded, be in series with 2 led light sources at least.
Owing to adopted technique scheme, compare with prior art, the electronic component that the utility model needs is less, circuit structure is simpler, greatly reduces production cost, can improve the competitiveness of product in market effectively; Use the method and the circuit structure of high frequency switch power now, power factor (PF) is generally 75%, and uses the power output factor of the utility model can reach 95%; The energy conversion efficiency of existing LED Switching Power Supply is generally 75% to 80%, and the utility model can reach 90%.In addition; The utility model adopts controlled current regulator diode that the forward fluctuating signal of rectifier bridge output is modulated into pulse signal; And then finely tune constant current once more through the constant-current characteristics of current regulator diode; Handle the current constant that signal is exported in the back through twice adjustment, guaranteed the stable luminous flux of high-power LED illuminating lamp output effectively, thereby satisfy the driving demand of high-power LED illuminating lamp.
Description of drawings:
Fig. 1 is the circuit structure diagram of the utility model;
Fig. 2 is the oscillogram after the rectifier bridge rectification;
Fig. 3 is the oscillogram after the controlled current regulator diode pulse modulation;
Fig. 4 is the oscillogram of exporting after the controlled current regulator diode constant current.
Being labeled as of accompanying drawing: D-controlled current regulator diode; E-led light source unit; D11, D12～D1n and D21, D22～D2n and Dn1, Dn2～Dnn-led light source, the rectifier diode of D1～D4-rectifier bridge, the input of a-controlled current regulator diode; The output of b-controlled current regulator diode, the control end of c-controlled current regulator diode.
Embodiment:
The embodiment of the utility model: the circuit that the high-power LED illuminating lamp constant-current pulse of the utility model drives makes up according to following method; At first; The two poles of the earth of AC power are connected the ac input end of rectifier bridge, make the dc output end of rectifier bridge produce forward fluctuating signal (as shown in Figure 2); Again with controlled current regulator diode and led light source units in series on the dc output end of rectifier bridge; Control end c with controlled constant current two utmost points is connected with the single-chip microcomputer signal output part that can export modulated pulse signal simultaneously; Like this can be through the control end output modulated pulse signal of single-chip microcomputer to controlled current regulator diode; Controlled current regulator diode its signal after under the control of modulated pulse signal the forward fluctuating signal of importing controlled current regulator diode being carried out pulse modulation produces change as shown in Figure 3; The signal of this change is again after controlled current regulator diode output is handled; Can carry the pulse signal (as shown in Figure 4) of current constant to the led light source unit, the luminous flux that on the led light source unit, converts to of the pulse signal of each current constant equates like this.
The circuit structure that the high-power LED illuminating lamp constant-current pulse of the utility model that makes up according to said method drives is as shown in Figure 1: during making; Rectifier bridge can adopt existing full-bridge rectification finished product; The ac input end of rectifier bridge is connected AC power; Existing commercially available controlled current regulator diode D on the dc output end serial connection of rectifier bridge; The input a of controlled current regulator diode D is connected with an end of the dc output end of rectifier bridge, the output b of controlled current regulator diode D is connected with the end of led light source unit E, the other end of led light source unit E is connected with the other end of the dc output end of rectifier bridge; Control end c with controlled current regulator diode D is connected with the output of single-chip microcomputer then; It is 8052 single-chip microcomputer that single-chip microcomputer can directly adopt the model of selling on the market; Its led light source unit E constitutes (led light source unit E can make up according to user demand) by the led light source parallel connection that is cascaded more than 2 groups; And in every group of led light source that is cascaded, be in series with 2 led light sources at least.In order to improve practicality; Let led light source unit E constitute high-power LED illuminating lamp; (as shown in Figure 1, D11, D12～D1n series connection are one group, and D21, D22～D2n are one group can the led light source that have many groups of commercially available series connection now to be constituted led light source unit E in parallel connection; Up to Dn1, Dn2～Dnn is one group, and the quantity of N can be confirmed according to the actual production demand).
In the time of the utility model work, at first carry out pulse constant current through 8052 single-chip microcomputers, and then carrying out property of the constant current spy constant current through controlled current regulator diode.When the positive half cycle of AC power arrives, the D of rectifier bridge
1Conducting, electric current arrive controlled current regulator diode D, after the high level of pulse control signal arrives, after controlled current regulator diode D modulation and constant current, give led light source unit E power supply, pass through the D of rectifier bridge at last
4Get back to the negative pole of power supply; When the negative half period of AC power arrives, the D of rectifier bridge
3Conducting, in like manner, electric current arrives controlled current regulator diode D, after the high level of pulse control signal arrives, after controlled current regulator diode D modulation and constant current, gives led light source unit E power supply, passes through the D of rectifier bridge at last
1Get back to the negative pole of power supply.
Claims (4)
1. the circuit that drives of a high-power LED illuminating lamp constant-current pulse; Comprise rectifier bridge; It is characterized in that: the ac input end at rectifier bridge connects AC power; Dc output end at rectifier bridge is serially connected with controlled current regulator diode (D) and led light source unit (E), and the control end (c) of controlled current regulator diode (D) is connected with the output of single-chip microcomputer.
2. the circuit that high-power LED illuminating lamp constant-current pulse according to claim 1 drives, it is characterized in that: the model of single-chip microcomputer is 8052.
3. the circuit that high-power LED illuminating lamp constant-current pulse according to claim 1 drives, it is characterized in that: led light source unit (E) is made up of the led light source parallel connection that is cascaded more than 2 groups.
4. the circuit that high-power LED illuminating lamp constant-current pulse according to claim 3 drives is characterized in that: in every group of led light source that is cascaded, be in series with 2 led light sources at least.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011203120948U CN202231908U (en) | 2011-08-24 | 2011-08-24 | Large power LED lamp constant-current pulse driven circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011203120948U CN202231908U (en) | 2011-08-24 | 2011-08-24 | Large power LED lamp constant-current pulse driven circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202231908U true CN202231908U (en) | 2012-05-23 |
Family
ID=46082477
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011203120948U Expired - Fee Related CN202231908U (en) | 2011-08-24 | 2011-08-24 | Large power LED lamp constant-current pulse driven circuit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202231908U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102958228A (en) * | 2011-08-24 | 2013-03-06 | 贵州航天风华精密设备有限公司 | Method and circuit for constant current pulse driving of high-power LED lamp |
-
2011
- 2011-08-24 CN CN2011203120948U patent/CN202231908U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102958228A (en) * | 2011-08-24 | 2013-03-06 | 贵州航天风华精密设备有限公司 | Method and circuit for constant current pulse driving of high-power LED lamp |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN203504852U (en) | Linear led drive circuit | |
| CN202143243U (en) | AC commercial power LED illuminating lamp drive circuit | |
| CN103220856A (en) | Self-adapting light emitting diode (LED) driving power circuit | |
| CN201893979U (en) | High-power efficient constant-current light-emitting diode (LED) driver | |
| CN202231908U (en) | Large power LED lamp constant-current pulse driven circuit | |
| CN102811535A (en) | Ultrahigh-efficiency LED (Light-Emitting Diode) constant-current power supply based on single-stage conversion and controllable rectification | |
| CN203896539U (en) | Light modulation constant current driving power supply without light modulator and used for LED illumination | |
| CN102791063A (en) | Intelligent LED module with function of automatic voltage regulation | |
| CN202873153U (en) | Led driving power supply | |
| CN202035201U (en) | LED (light-emitting diode) energy-saving lamp integration module | |
| CN202551458U (en) | Conversion module for driving LED (Light-Emitting Diode) by using electronic ballast | |
| CN102958228A (en) | Method and circuit for constant current pulse driving of high-power LED lamp | |
| CN202261926U (en) | Circuit structure driven by alternating current and constant current supply for LED lamp | |
| CN202435663U (en) | Non-isolated LED constant-current driving power source with high power factor | |
| CN203193969U (en) | Time-division multiple-path constant current driving LED lamp | |
| CN208094852U (en) | A kind of highly integrated LED driving encapsulation | |
| CN202364422U (en) | LED constant current light adjustment power supply system | |
| CN203708584U (en) | Bidirectional driving LED circuit | |
| CN205017642U (en) | Multi -functional LED lamp of intelligence | |
| CN202521548U (en) | Intelligent centralized power supply unit for LED fluorescent lamps for production line | |
| CN204031562U (en) | Twin-stage exchange type power conversion circuit | |
| CN204350404U (en) | Based on the LED light device of Internet of Things | |
| CN203261508U (en) | Constant-power LED power supply circuit | |
| CN202263579U (en) | Line lamp device for diamond synthesis press | |
| CN202617405U (en) | LED lighting device |
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 |
Granted publication date: 20120523 Termination date: 20150824 |
|
| EXPY | Termination of patent right or utility model |