CN206237643U - A linear constant current control LED lamp - Google Patents
A linear constant current control LED lamp Download PDFInfo
- Publication number
- CN206237643U CN206237643U CN201621271038.3U CN201621271038U CN206237643U CN 206237643 U CN206237643 U CN 206237643U CN 201621271038 U CN201621271038 U CN 201621271038U CN 206237643 U CN206237643 U CN 206237643U
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- Prior art keywords
- linear constant
- drive circuit
- constant current
- current drive
- circuit
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- 230000005611 electricity Effects 0.000 claims description 10
- 239000003990 capacitor Substances 0.000 claims description 8
- 238000004146 energy storage Methods 0.000 claims description 4
- 238000006243 chemical reaction Methods 0.000 abstract description 4
- 230000010349 pulsation Effects 0.000 description 3
- 230000002093 peripheral effect Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 1
- 238000005868 electrolysis reaction Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000003287 optical effect Effects 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
- Y02B20/30—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)
Abstract
The utility model discloses a kind of linear constant current control LED, including AC to DC converter circuit, LED illuminating circuits, first linear constant-current drive circuit, accumulator and the second linear constant current drive circuit, the output end of AC to DC converter circuit, the output end connection of the positive input terminal and accumulator of LED illuminating circuits, the positive input terminal of accumulator, the output end connection of the negative input end of LED illuminating circuits and the second linear constant current drive circuit, the output end connection of the negative input end of accumulator and the first linear constant-current drive circuit, the control end connection of the control end of the first linear constant-current drive circuit and the second linear constant current drive circuit, the earth terminal of AC to DC converter circuit, the earth terminal of the earth terminal of the first linear constant-current drive circuit and the second linear constant current drive circuit is grounded；Advantage is that cost is relatively low, and light stroboscopic is low, can meet the low price demand of low-power LED lamp on the basis of conversion efficiency is ensured.
Description
Technical field
The utility model is related to a kind of LED, and LED is controlled more particularly, to a kind of linear constant current.
Background technology
With widely using for LED, the cost pressure of LED is increasing, it is necessary to constantly be changed to LED
Enter, with reduces cost.Drive circuit is also constantly being improved, to reach optimal cost performance as the critical piece of LED.
At present, LED mainly has Switching Power Supply current constant control LED and linear constant current two kinds of LED of control.Switching Power Supply current constant control
The drive circuit of LED uses Switching Power Supply constant-current drive circuit, is needed in Switching Power Supply constant-current drive circuit using units such as EMC
Part, its structure is complex, relatively costly.The drive circuit of linear constant current control LED uses linear constant current drive circuit, line
Property constant-current drive circuit realized using linear constant current control chip and its peripheral circuit, linear constant current control chip itself design letter
Single, its peripheral circuit is simple, it is not necessary to increase the elements such as EMC, and the cost of linear constant current control LED is permanent relative to Switching Power Supply
Flow control LED is substantially reduced, and is widely used at present.
Existing linear constant current control LED generally includes AC to DC converter circuit, smooth circuit, linear constant current and drives electricity
Road and LED illuminating circuits, AC to DC converter circuit have live wire input, and zero line input, output and ground smooths electricity
Road has input and earth terminal, and linear constant current drive circuit has control end, output and ground, LED illuminating circuits tool
There are positive input terminal and negative input end, its structure chart is as shown in Figure 1.The live wire input of AC to DC converter circuit and the live wire of civil power
Connection, zero line input is connected with the zero line of civil power；The output end of AC to DC converter circuit, the input of smooth circuit and LED
The positive input terminal connection of illuminating circuit；Output end connection, the friendship of the negative input end and linear constant current drive circuit of LED illuminating circuits
The earth terminal of circulation DC circuit, the earth terminal of smooth circuit and the earth terminal of linear constant current drive circuit are grounded.In work
When, the alternating voltage of civil power is converted into the very big DC voltage of voltage pulsation by AC to DC converter circuit, and the DC voltage passes through
After smooth circuit, the voltage pulsation of output becomes smaller.Linear constant current drive circuit sets output current by control end,
The negative input end of LED illuminating circuits and the output end of linear constant current drive circuit link together, as long as smooth circuit input
Voltage of the voltage higher than LED illuminating circuits and output end between, flowing through the electric current of LED illuminating circuits will keep constant.
In order to ensure the conversion efficiency (usually 70%~90%) of linear constant current drive circuit, linear constant current drive circuit
Load voltage requirement it is higher.Generally, for line voltage 220V, the output loading of linear constant current drive circuit
Voltage is typically required in 230V-290V.In order to match the output loading voltage requirement of linear constant-current drive circuit, common practice
It is that matching is gone using the LED illuminating circuits for adapting to, thus caused result is that the power of LED illuminating circuits can be larger, is only capable of fitting
Linear constant current control LED for relatively high power is carried out reducing power and used to circuit of light sources, cause it is unnecessary into
This raising.In order to meet the low price demand that market controls low power linear constant current LED (power is less than 4 watts), occur
Using the linear constant current drive circuit of ASIC-based, under the voltage of input 220V, output voltage is only for the special chip
It is required that 130V or so, but this chip cost is high, and the light stroboscopic of LED can be caused very high.
The content of the invention
Technical problem to be solved in the utility model be to provide it is a kind of on the basis of conversion efficiency is ensured, cost compared with
It is low, and light stroboscopic is low, can meet the linear constant current control LED of low-power LED lamp low cost demand.
The utility model solve the technical scheme that is used of above-mentioned technical problem for：A kind of linear constant current controls LED, bag
AC to DC converter circuit, LED illuminating circuits, the first linear constant-current drive circuit are included, described AC to DC converter circuit has fire
Line input, zero line input, output and ground, the first described linear constant-current drive circuit has control end, output
End and earth terminal, described LED illuminating circuits have positive input terminal and negative input end, and described linear constant current control LED is also
Including accumulator and the second linear constant current drive circuit, described accumulator has positive input terminal, negative input end and output
End, the second described linear constant current drive circuit has control end, an output and ground, described AC to DC converter circuit
The output end connection of output end, the positive input terminal of described LED illuminating circuits and described accumulator, described accumulator
Positive input terminal, the negative input end of described LED illuminating circuits and the second described linear constant current drive circuit output end connect
Connect, the output end connection of the negative input end and the described first linear constant-current drive circuit of described accumulator, described the
The control end connection of the control end of one linear constant current drive circuit and the second described linear constant current drive circuit, described exchange
Earth terminal, the earth terminal of the described first linear constant-current drive circuit and the second described linear constant current for turning DC circuit drive
The earth terminal of circuit is grounded.
Described accumulator includes the first diode, the second diode and electrochemical capacitor, described the first diode
Negative pole is the output end of described accumulator, the positive pole of described the first diode, the negative pole of the second described diode and
The positive pole connection of described electrochemical capacitor, the positive input terminal of the just extremely described accumulator of described the second diode, institute
The negative pole of the electrochemical capacitor stated is the negative input end of described accumulator.
The first described linear constant-current drive circuit includes first chip and first resistor of model SM2082, described
1st pin of the first chip is the output end of the first described linear constant-current drive circuit, the 2nd pin of described the first chip and institute
One end connection of the first resistor stated and its connection end are the earth terminal of the first described linear constant-current drive circuit, described the
3rd pin of one chip and the other end of described first resistor are connected and its connection end is that the first described linear constant current drives electricity
The control end on road.
The second described linear constant current drive circuit includes second chip and second resistance of model SM2082, described
1st pin of the second chip is the output end of the second described linear constant current drive circuit, and the 2nd pin of the second described chip is institute
The earth terminal of the second linear constant current drive circuit stated, the 3rd pin of described the second chip and one end of described second resistance
Connection, the other end of described second resistance is the control end of the second described linear constant current drive circuit.
Described AC to DC converter circuit is full bridge rectifier bridge heap, and the 1st pin of described full bridge rectifier bridge heap is described
The live wire input of AC to DC converter circuit, the 3rd pin of described full bridge rectifier bridge heap is described AC to DC converter circuit
Zero line input, the 2nd pin of described full bridge rectifier bridge heap is the output end of described AC to DC converter circuit, described full-bridge
4th pin of rectifier bridge stack is the earth terminal of described AC to DC converter circuit.
Compared with prior art, the alternating voltage of civil power is converted the utility model has the advantage of AC to DC converter circuit
Be the very big DC voltage of voltage pulsation, when the DC voltage higher than LED illuminating circuits voltage again less than LED circuit voltage and
During the voltage sum of accumulator, the conducting of the second linear constant current drive circuit；When electricity of the DC voltage more than LED illuminating circuits
During the voltage sum of pressure and accumulator, the first linear constant-current drive circuit conducting simultaneously turns off the second linear constant current and drives electricity
Road, while LED illuminating circuits are lighted, electric current is charged by accumulator to accumulator；When the DC voltage is less than LED
During the voltage of illuminating circuit, the first linear constant-current drive circuit reverse-conducting and the forward direction constant current of the second linear constant current drive circuit are led
Logical, LED illuminating circuits are lighted in accumulator electric discharge, are thus reached within the whole input voltage cycle, have electric current to be sent out by LED
Optical circuit, light stroboscopic is low, and using traditional linear constant current drive circuit (the first linear constant-current drive circuit and second linear
Constant-current drive circuit) LED illuminating circuits are driven, cost is relatively low, accumulator, the first linear constant-current drive circuit and the second line
Property constant-current drive circuit cooperation on the basis of ensureing that there is conversion efficiency higher, output loading voltage can be reduced, it is full
More low price demand of the sufficient market to low-power LED lamp.
Brief description of the drawings
Fig. 1 is the structure chart that existing linear constant current controls LED；
Fig. 2 is the structure chart that linear constant current of the present utility model controls LED；
Fig. 3 is the circuit diagram that linear constant current of the present utility model controls LED.
Specific embodiment
The utility model is described in further detail below in conjunction with accompanying drawing embodiment.
Embodiment one：As shown in Fig. 2 a kind of linear constant current control LED, including AC to DC converter circuit 1, LED is luminous
Circuit 2, the first linear constant-current drive circuit 3, AC to DC converter circuit 1 have live wire input, zero line input, output end and
Earth terminal, the first linear constant-current drive circuit 3 has control end, output and ground, and LED illuminating circuits 2 have positive input
End and negative input end, linear constant current control LED also include the linear constant current drive circuit 5 of accumulator 4 and second, accumulator
4 have positive input terminal, negative input end and output end, and the second linear constant current drive circuit 5 has control end, output end and ground connection
End, the output end connection of the output end, the positive input terminal of LED illuminating circuits 2 and accumulator 4 of AC to DC converter circuit 1, energy storage
The output end connection of the positive input terminal, the negative input end of LED illuminating circuits 2 and the second linear constant current drive circuit 5 of circuit 4, storage
The output end connection of the negative input end and the first linear constant-current drive circuit 3 of energy circuit 4, the first linear constant-current drive circuit 3
The control end connection of control end and the second linear constant current drive circuit 5, the earth terminal of AC to DC converter circuit 1, the first linear perseverance
The earth terminal of the earth terminal and the second linear constant current drive circuit 5 that flow drive circuit 3 is grounded.
In the present embodiment, AC to DC converter circuit 1, LED illuminating circuits 2, the first linear constant-current drive circuit 3, energy storage electricity
The linear constant current drive circuit 5 of road 4 and second is using the matured product of its technical field.
Embodiment two：As shown in Figures 2 and 3, a kind of linear constant current control LED, including AC to DC converter circuit 1, LED
Illuminating circuit 2, the first linear constant-current drive circuit 3, AC to DC converter circuit 1 have live wire input, zero line input, output
End and earth terminal, the first linear constant-current drive circuit 3 have control end, output and ground, and LED illuminating circuits 2 have just
Input and negative input end, linear constant current control LED also include the linear constant current drive circuit 5 of accumulator 4 and second, energy storage
Circuit 4 has positive input terminal, negative input end and output end, and the second linear constant current drive circuit 5 has control end, output end and connects
Ground terminal, the output end connection of the output end, the positive input terminal of LED illuminating circuits 2 and accumulator 4 of AC to DC converter circuit 1, storage
The output end connection of the positive input terminal, the negative input end of LED illuminating circuits 2 and the second linear constant current drive circuit 5 of energy circuit 4,
The output end connection of the negative input end of accumulator 4 and the first linear constant-current drive circuit 3, the first linear constant-current drive circuit 3
Control end and the second linear constant current drive circuit 5 control end connection, it is the earth terminal of AC to DC converter circuit 1, first linear
The earth terminal of the earth terminal of constant-current drive circuit 3 and the second linear constant current drive circuit 5 is grounded.
In the present embodiment, accumulator 4 includes the first diode D1, the second diode D2 and electrochemical capacitor EC1, the one or two
The negative pole of pole pipe D1 is the output end of accumulator 4, the positive pole of the first diode D1, the negative pole of the second diode D2 and electrolysis electricity
Hold the positive pole connection of EC1, the just extremely positive input terminal of accumulator 4 of the second diode D2, the negative pole of electrochemical capacitor EC1 is storage
The negative input end of energy circuit 4.
In the present embodiment, the first linear constant-current drive circuit 3 includes the electricity of the first chip U1 and first of model SM2082
Resistance R1, the 1st pin of the first chip U1 is the output end of the first linear constant-current drive circuit 3, the 2nd pin and first of the first chip U1
Resistance R1 one end connection and its connection end be the first linear constant-current drive circuit 3 earth terminal, the 3rd pin of the first chip U1 and
The other end of first resistor R1 is connected and its connection end is the control end of the first linear constant-current drive circuit 3.
In the present embodiment, the second linear constant current drive circuit 5 includes the electricity of the second chip U2 and second of model SM2082
1st pin of resistance R2, the second chip U2 is the output end of the second linear constant current drive circuit 5, and the 2nd pin of the second chip U2 is second
The earth terminal of linear constant current drive circuit 5, one end connection of the 3rd pin and second resistance R2 of the second chip U2, second resistance R2
The other end be the second linear constant current drive circuit 5 control end.
In the present embodiment, AC to DC converter circuit 1 is full bridge rectifier bridge heap Db, and the 1st pin of full bridge rectifier bridge heap Db is friendship
The live wire input of circulation DC circuit 1, the 3rd pin of full bridge rectifier bridge heap Db is the zero line input of AC to DC converter circuit 1,
2nd pin of full bridge rectifier bridge heap Db is the output end of AC to DC converter circuit 1, and the 4th pin of full bridge rectifier bridge heap Db is exchange turn
The earth terminal of DC circuit 1.
Claims (5)
1. a kind of linear constant current control LED, including AC to DC converter circuit, LED illuminating circuits, the first linear constant current driving electricity
Road, described AC to DC converter circuit has live wire input, zero line input, output and ground, described First Line
Property constant-current drive circuit has control end, output and ground, and described LED illuminating circuits have positive input terminal and negative input
End, it is characterised in that described linear constant current control LED also includes accumulator and the second linear constant current drive circuit, described
Accumulator there is positive input terminal, negative input end and output end, the second described linear constant current drive circuit have control end,
Output and ground, the output end of described AC to DC converter circuit, the positive input terminal of described LED illuminating circuits and described
Accumulator output end connection, the positive input terminal of described accumulator, the negative input end of described LED illuminating circuits and
The output end connection of the second described linear constant current drive circuit, the negative input end and described First Line of described accumulator
Property constant-current drive circuit output end connection, the control end of described the first linear constant-current drive circuit and described second linear
The control end connection of constant-current drive circuit, the earth terminal of described AC to DC converter circuit, the first described linear constant current drive
The earth terminal of the earth terminal of circuit and the second described linear constant current drive circuit is grounded.
2. a kind of linear constant current control LED according to claim 1, it is characterised in that described accumulator includes the
One diode, the second diode and electrochemical capacitor, the negative pole of the first described diode are the output end of described accumulator,
The positive pole connection of the positive pole of the first described diode, the negative pole of the second described diode and described electrochemical capacitor, it is described
The second diode just extremely described accumulator positive input terminal, the negative pole of described electrochemical capacitor is described energy storage
The negative input end of circuit.
3. a kind of linear constant current according to claim 1 controls LED, it is characterised in that the first described linear constant current drives
Dynamic circuit includes first chip and first resistor of model SM2082, and the 1st pin of the first described chip is described first
The output end of linear constant current drive circuit, described the 2nd pin of the first chip and one end of described first resistor is connected and it
Connection end is the earth terminal of the first described linear constant-current drive circuit, the 3rd pin and described first of described the first chip
The other end of resistance is connected and its connection end is the control end of the first described linear constant-current drive circuit.
4. a kind of linear constant current according to claim 1 controls LED, it is characterised in that the second described linear constant current drives
Dynamic circuit includes second chip and second resistance of model SM2082, and the 1st pin of the second described chip is described second
The output end of linear constant current drive circuit, the 2nd pin of the second described chip is the second described linear constant current drive circuit
Earth terminal, one end connection of the 3rd pin and described second resistance of described the second chip, the other end of described second resistance
It is the control end of the second described linear constant current drive circuit.
5. a kind of linear constant current according to claim 1 controls LED, it is characterised in that described AC to DC converter circuit
It is full bridge rectifier bridge heap, the 1st pin of described full bridge rectifier bridge heap is the live wire input of described AC to DC converter circuit, institute
3rd pin of the full bridge rectifier bridge heap stated is the zero line input of described AC to DC converter circuit, described full bridge rectifier bridge heap
The 2nd pin be described AC to DC converter circuit output end, the 4th pin of described full bridge rectifier bridge heap is that described exchange turns
The earth terminal of DC circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621271038.3U CN206237643U (en) | 2016-11-24 | 2016-11-24 | A linear constant current control LED lamp |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621271038.3U CN206237643U (en) | 2016-11-24 | 2016-11-24 | A linear constant current control LED lamp |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206237643U true CN206237643U (en) | 2017-06-09 |
Family
ID=58979804
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621271038.3U Expired - Fee Related CN206237643U (en) | 2016-11-24 | 2016-11-24 | A linear constant current control LED lamp |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206237643U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108650732A (en) * | 2018-05-03 | 2018-10-12 | 新和（绍兴）绿色照明有限公司 | A kind of linear constant current LED circuit with light-sensing function |
-
2016
- 2016-11-24 CN CN201621271038.3U patent/CN206237643U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108650732A (en) * | 2018-05-03 | 2018-10-12 | 新和（绍兴）绿色照明有限公司 | A kind of linear constant current LED circuit with light-sensing function |
| CN108650732B (en) * | 2018-05-03 | 2024-02-23 | 和谐明芯(义乌)光电科技有限公司 | A linear constant current LED circuit with light sensing function |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20200318 Address after: 322009 NO.901, Longqi Road, Suxi Town, Yiwu City, Jinhua City, Zhejiang Province Patentee after: Harmony Mingxin (Yiwu) Photoelectric Technology Co.,Ltd. Address before: 312071 Zhejiang province Shaoxing Paojiang Industrial Zone No. 308 North Road in the robe Patentee before: SUNNY WORLD (SHAOXING) GREEN LIGHTING Co.,Ltd. |
|
| TR01 | Transfer of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20170609 |
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| CF01 | Termination of patent right due to non-payment of annual fee |