CN201797621U - High-efficiency long-life driving circuit for LED illumination - Google Patents
High-efficiency long-life driving circuit for LED illumination Download PDFInfo
- Publication number
- CN201797621U CN201797621U CN2010201708791U CN201020170879U CN201797621U CN 201797621 U CN201797621 U CN 201797621U CN 2010201708791 U CN2010201708791 U CN 2010201708791U CN 201020170879 U CN201020170879 U CN 201020170879U CN 201797621 U CN201797621 U CN 201797621U
- Authority
- CN
- China
- Prior art keywords
- load
- voltage
- driving circuit
- life
- led illumination
- 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
- Led Devices (AREA)
Abstract
The utility model relates to LED illumination, in particular to a high-efficiency long-life driving circuit for LED illumination. After the driving circuit is directly rectified by commercial power, a plurality of switching tubes, voltage stabilizing diodes, a capacitor and a common-emitter amplifying circuit are respectively connected to a rectifying output positive end and a load input end, a charging state of the output capacitor and a power supply state of a load are controlled by means of connection and disconnection of the switching tubes, and the connection and disconnection of the switching tubes are controlled by current flowing through the load and voltage at two ends of the load, thereby ensuring stability of the current and the voltage of the load. The integral circuit omits high-voltage capacitors and inductance elements, is simple in structure, high in universality, long in service life, wide in applicability and low in cost, is safe, reliable, highly efficient and long-life, and is suitable for industrial production in large scale. In addition, frequent switching on and switching off of the high-efficiency long-life driving circuit have no influence on the service life of a lamp.
Description
Technical field
The utility model relates to a kind of LED illuminating lamp, especially a kind of high-efficiency long-life LED illuminating lamp drive circuit.
Background technology
At present, existing on the market LED illuminating lamp is the drive circuit complexity on the one hand, on the other hand poor stability.The LED illuminating lamp production cost height of drive circuit complexity, volume weight are big; The succinct LED illuminating lamp stability of drive circuit is poor again, and can not be guaranteed the useful life of light fixture.
Summary of the invention
In order to overcome the existing succinct LED illuminating lamp poor stability of drive circuit, can not get shortcomings such as assurance the useful life of light fixture, the utility model is in the patent of invention " the general high-efficiency long-life drive circuit of the noninductive semiconductor lighting of wide voltage ", the defective of fragile electronic component when load voltage is excessive proposes a kind of safe and reliable Technological improvement plan.
The technical scheme that its technical problem that solves the utility model adopts is: civil power is after direct rectification, between rectification output plus terminal and load input terminal, insert several switching tubes successively, voltage stabilizing didoe, electric capacity, the common emitter amplifying circuit, and the break-make of utilizing switching tube is controlled to the charged state of output capacitance with to the power supply state of load, the break-make of switching tube is controlled by the electric current of the load of flowing through and the voltage at load two ends, between the common emitter amplifying circuit anode and the switching tube b utmost point, insert voltage stabilizing didoe, when load is in open circuit or other reasons the load both end voltage is increased, the voltage stabilizing didoe reverse breakdown, switching tube disconnects, rectification output no longer only depends on output capacitance to electric to electric, cross when low when load voltage, can recover automatically again to the charging of output capacitance with to the power supply of load.
Specifically technical measures as shown in the figure: an end of a termination rectification input of civil power, the other end of another termination civil power of described rectification input, the upper end of described rectification output plus terminal connecting resistance R1 and the d of field effect transistor VT end, the anode of the s termination capacitor C of described field effect transistor, the negative terminal of voltage stabilizing didoe DW1, the upper end of the left end of resistance R 2 and resistance R 3, the lower end of the described resistance R 1 of g termination of described field effect transistor and the c of switching tube Q1 end, e termination rectification output negative terminal and the output capacitor negative terminal of described switching tube Q1, resistance R 5 lower ends, resistance R 6 lower ends, the negative terminal of semiconductor light-emitting elements string is as zero potential point; The left end of the b terminating resistor R4 of described switching tube Q1, the right-hand member of described resistance R 4 connects the anode of described voltage stabilizing didoe DW1, the anode of voltage stabilizing didoe DW2, described resistance R 3 and described resistance R 5, R6, R7, cascode triode Q2 mutual group becomes the partial pressure type total radio amplifier, the upper end of the described resistance R 5 of c termination of wherein said triode Q2, the negative terminal of described voltage stabilizing didoe DW2, the lower end of the described resistance R 3 of e termination of described triode Q2, b end and described resistance R 7 lower ends of described triode Q2, the R6 upper end connects the upper end of described resistance R 7 and described resistance R 2 right-hand members, the anode of semiconductor light-emitting elements string connects.
Described voltage stabilizing didoe DW1 is inserted common emitter amplifying circuit anode and insert between the resistance of described switching tube Q1 base stage.When load be in open circuit or other reasons when making the load both end voltage increase to voltage setting value described voltage stabilizing didoe DW1 puncture conducting, thereby described switching tube Q1 saturation conduction, described switching tube VT are ended, the rectification output current is no longer to output capacitance and electric, and electric capacity is to common emitter amplifying circuit and electric; When described capacitor C both end voltage drops to set point when following, described voltage stabilizing didoe DW1 ends, described switching tube VT conducting, and the rectification output current is to described capacitor C charging and to electric, above process constantly repeats automatically, guarantees that output voltage is in a stable scope.
Description of drawings
Accompanying drawing is a circuit structure diagram of the present utility model.
Embodiment
Below in conjunction with embodiment the utility model is further specified
Can adopt: capacitor C=1--300 microfarad all can, withstand voltage 25 volts, resistance R 1=560K ohm, resistance R 2=0.47 ohm, resistance R 3=150 ohm, resistance R 7=4.7K ohm, resistance R 5=6K ohm, resistance R 6=62K ohm, resistance R 4=100 ohm, 24 volts of the withstand voltages of voltage stabilizing didoe DW1,6 volts of the withstand voltages of voltage stabilizing didoe DW2, triode Q1 8050 types, triode Q2 8550 types, switching tube VT can adopt field effect transistor IRF730 type, and 51 watt LED is composed in series led circuit.
Voltage stabilizing didoe in the present embodiment also can be selected the voltage stabilizing didoe of other models for use, and field effect transistor also can be selected the field effect transistor of other models for use, and triode also can be selected the triode of other models NPN type or positive-negative-positive for use.
Claims (2)
1. high-efficiency long-life LED illumination driving circuit, it is characterized in that adopting and between rectification output plus terminal and load input terminal, insert several switching tubes, voltage stabilizing didoe, electric capacity and common emitter amplifying circuits, and the break-make of utilizing switching tube (VT in the accompanying drawing) is controlled to the charged state of output capacitance with to the power supply state of load, the break-make of described switching tube is controlled by the electric current and the load both end voltage of the load of flowing through, thereby guarantees the stable of output current, voltage.
2. a kind of high-efficiency long-life LED illumination driving circuit according to claim 1 is characterized in that inserting voltage stabilizing didoe (DW1) between common emitter amplifying circuit and switching tube (Q1), thereby guarantees the stable of output voltage.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010201708791U CN201797621U (en) | 2010-04-27 | 2010-04-27 | High-efficiency long-life driving circuit for LED illumination |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010201708791U CN201797621U (en) | 2010-04-27 | 2010-04-27 | High-efficiency long-life driving circuit for LED illumination |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201797621U true CN201797621U (en) | 2011-04-13 |
Family
ID=43852517
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010201708791U Expired - Fee Related CN201797621U (en) | 2010-04-27 | 2010-04-27 | High-efficiency long-life driving circuit for LED illumination |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201797621U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108387230A (en) * | 2017-05-24 | 2018-08-10 | 大连民族大学 | A kind of supermarket shopping guide air navigation aid |
-
2010
- 2010-04-27 CN CN2010201708791U patent/CN201797621U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108387230A (en) * | 2017-05-24 | 2018-08-10 | 大连民族大学 | A kind of supermarket shopping guide air navigation aid |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102238766A (en) | General high-efficiency long-life driving circuit for wide voltage non-inductance semiconductor illumination | |
| CN103152895B (en) | The circuit of the direct driving LED of a kind of alternating current | |
| CN2924996Y (en) | Low-cost high-performance LED lighting circuit | |
| CN201590932U (en) | LED alternating-current direct driving circuit | |
| CN102548095B (en) | Lamp and driving circuit thereof | |
| CN102711310A (en) | Light-emitting diode (LED) drive circuit and lamp | |
| CN203162873U (en) | AC (alternating current) direct-drive current correcting circuit of LED lamp | |
| CN203167384U (en) | AC directly driving LED lamp current control circuit | |
| CN103517524B (en) | Led emergency controller | |
| CN201797621U (en) | High-efficiency long-life driving circuit for LED illumination | |
| CN203057618U (en) | LED constant-current drive switch power supply with long service life | |
| CN203734880U (en) | High voltage integration AC LED multistage linear drive device | |
| CN103068096A (en) | Light-emitting diode (LED) lamp, current sampling circuit and drive circuit of LED lamp | |
| CN201518547U (en) | Semi-conductor lighting constant-current power supply | |
| CN201403223Y (en) | Constant current diode drive device | |
| CN201585165U (en) | LED alternating-current direct power supply circuit | |
| CN205232515U (en) | Light -emitting diode (LED) driving circuit | |
| CN203151827U (en) | Ultra-long-life large-current light emitting diode (LED) drive power circuit | |
| CN202043331U (en) | LED (Light Emitting Diode) control device capable of automatically switching voltage | |
| CN202696996U (en) | Efficient non-isolated switching power supply | |
| CN104066223B (en) | Emergency light circuit and emergency light | |
| CN102932998B (en) | Power converter | |
| CN203467043U (en) | Led emergency controller | |
| CN203850918U (en) | Power failure emergency alarm circuit | |
| CN201557283U (en) | LED energy-saving lamp with open-circuit protection |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| DD01 | Delivery of document by public notice |
Addressee: Chengdu SureSun Technology Co., Ltd. Document name: Notification of Termination of Patent Right |
|
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110413 Termination date: 20120427 |