CN201210762Y - Embedded power source for LED fluorescent tube - Google Patents
Embedded power source for LED fluorescent tube Download PDFInfo
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- CN201210762Y CN201210762Y CNU2008200590954U CN200820059095U CN201210762Y CN 201210762 Y CN201210762 Y CN 201210762Y CN U2008200590954 U CNU2008200590954 U CN U2008200590954U CN 200820059095 U CN200820059095 U CN 200820059095U CN 201210762 Y CN201210762 Y CN 201210762Y
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- power supply
- led
- constant current
- capacitor
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Abstract
The utility model claims internal power supply of a LED daylight lamp. Circuit structure of the power supply includes: an alternate current input end is accessed with D3, D4, D5 and D6 silicon bridge rectification circuits after executing an over current protection by being serially connected with a safety fuse L1, then parallel connected with a voltage regulator diode TVS for the over current protection, and filtered by a polyester capacitor C1 and a capacitor C2, finally parallel connected to output ends at two ends of the circuit after two ends thereof are parallel connected with a constant current chip CL2 of an inversed diode D1 and serially connected with a LED indicating lamp D2. The power supply is not only provided with a cost equivalent to the same of resistance-capacitance reduction driving, but is capable of driving a LED by means of constant current with small capacity, thereby gaining a driving effect better than power supply of a constant current switch.
Description
Technical field:
The utility model relates to a kind of power supply of constant-current driving LED illuminating lamp, particularly a kind of built-in power of LED fluorescent tube.
Background technology:
The LED product has wide prospect often, especially at lighting field especially beyond any doubt.LED is exactly its power issue in the difficult problem that lighting field faced at present.Traditional LED power supply has dual mode.The one, though cost is lower, there is the not enough and relatively poor shortcoming of current stabilization ability of the precision of voltage regulation in resistance-capacitance depressurization, greatly reduces the useful life of LED; The 2nd, adopt Switching Power Supply, preferably use constant current, can not influence the useful life of LED like this, but its cost teaches high volume bigger.
The utility model content:
In order to overcome the existing defective of LED conventional power source, the utility model provides a kind of built-in power of LED fluorescent tube.Not only the cost that drives of cost and resistance-capacitance depressurization is suitable for this power supply, and volume I constant-current driving LED, reaches than constant current switch power supply better driving effect.
The circuit structure of this power supply is: after ac input end series connection fuse L1 carries out overcurrent protection; access is by D3, D4, D5, D6 silicon bridge rectification circuit; and then parallel voltage-stabilizing diode TVS carries out overvoltage protection; and carry out filtering by polyester capacitor C 1 and capacitor C 2, after two ends and meet the constant current chip CL2 of backward diode D1 and LED light D2 series connection after and to the output at circuit two ends.
According to the foregoing circuit structure; during this application of power, bridge path rectification is taked after the over-current over-voltage protection element in the electric main input; choose suitable electric capacity according to load and carry out filtering; this point is most important, if the error meeting that electric capacity is chosen directly influences the efficient of circuit, the efficient of choosing suitable condenser network can reach more than 90%; add a polyester electric capacity after this; high frequency clutter in the filtering circuit is to insert the constant current chip afterwards, the output constant-current driving LED.
The beneficial effects of the utility model are: in the constant-current driving that realizes LED basically with low cost, this power volume is little, can be built in LED fluorescent tube inside.
Description of drawings:
Further specify the utility model below in conjunction with the drawings and specific embodiments.
Fig. 1 is the schematic diagram of power supply described in the utility model.
Embodiment:
For technological means, creation characteristic that the utility model is realized, reach purpose and effect is easy to understand, below in conjunction with concrete diagram, further set forth the utility model.
As shown in Figure 1; the circuit structure of the built-in power of this LED fluorescent tube is: after ac input end series connection fuse L1 carries out overcurrent protection; access is by D3, D4, D5, D6 silicon bridge rectification circuit; and then parallel voltage-stabilizing diode TVS carries out overvoltage protection; and carry out filtering by polyester capacitor C 1 and capacitor C 2, after two ends and meet the constant current chip CL2 of backward diode D1 and LED light D2 series connection after and to the output at circuit two ends.
More than show and described basic principle of the present utility model and principal character and advantage of the present utility model.The technical staff of the industry should understand; the utility model is not restricted to the described embodiments; that describes in the foregoing description and the specification just illustrates principle of the present utility model; under the prerequisite that does not break away from the utility model spirit and scope; the utility model also has various changes and modifications, and these changes and improvements all fall in claimed the utility model scope.The claimed scope of the utility model is defined by appending claims and equivalent thereof.
Claims (1)
1, the built-in power of LED fluorescent tube; It is characterized in that; after ac input end series connection fuse L1 carries out overcurrent protection; access is by D3, D4, D5, D6 silicon bridge rectification circuit; and then parallel voltage-stabilizing diode TVS carries out overvoltage protection; and carry out filtering by polyester capacitor C 1 and capacitor C 2, after two ends and meet the constant current chip CL2 of backward diode D1 and LED light D2 series connection after and to the output at circuit two ends.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200590954U CN201210762Y (en) | 2008-05-29 | 2008-05-29 | Embedded power source for LED fluorescent tube |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200590954U CN201210762Y (en) | 2008-05-29 | 2008-05-29 | Embedded power source for LED fluorescent tube |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201210762Y true CN201210762Y (en) | 2009-03-18 |
Family
ID=40481496
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008200590954U Expired - Fee Related CN201210762Y (en) | 2008-05-29 | 2008-05-29 | Embedded power source for LED fluorescent tube |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201210762Y (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101915371A (en) * | 2010-08-04 | 2010-12-15 | 深圳市佳比泰电子科技有限公司 | LED fluorescent lamp tube with variable-frequency variable-voltage power supply and implementation method thereof |
| CN102278722A (en) * | 2010-06-08 | 2011-12-14 | 李正恒 | Electronic ballast-type LED fluorescent lamp |
| CN102612198A (en) * | 2011-01-21 | 2012-07-25 | 李玉玲 | Nonradiative driving circuit of LED (light-emitting diode) light source |
| CN102691913A (en) * | 2012-06-01 | 2012-09-26 | 李史平 | Universal LED light-emitting system |
| CN102840469A (en) * | 2011-08-11 | 2012-12-26 | 南通天华和睿科技创业有限公司 | Novel LED (Light-Emitting Diode) energy-saving lamp |
| US9239157B2 (en) | 2010-08-26 | 2016-01-19 | Rasit Özgüc | Light-emitting means, in particular for operation in lampholders for fluorescent lamps |
-
2008
- 2008-05-29 CN CNU2008200590954U patent/CN201210762Y/en not_active Expired - Fee Related
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102278722A (en) * | 2010-06-08 | 2011-12-14 | 李正恒 | Electronic ballast-type LED fluorescent lamp |
| CN102278722B (en) * | 2010-06-08 | 2013-11-06 | 李正恒 | Electronic ballast-type led fluorescent lamp |
| CN101915371A (en) * | 2010-08-04 | 2010-12-15 | 深圳市佳比泰电子科技有限公司 | LED fluorescent lamp tube with variable-frequency variable-voltage power supply and implementation method thereof |
| US9239157B2 (en) | 2010-08-26 | 2016-01-19 | Rasit Özgüc | Light-emitting means, in particular for operation in lampholders for fluorescent lamps |
| CN102612198A (en) * | 2011-01-21 | 2012-07-25 | 李玉玲 | Nonradiative driving circuit of LED (light-emitting diode) light source |
| CN102840469A (en) * | 2011-08-11 | 2012-12-26 | 南通天华和睿科技创业有限公司 | Novel LED (Light-Emitting Diode) energy-saving lamp |
| CN102691913A (en) * | 2012-06-01 | 2012-09-26 | 李史平 | Universal LED light-emitting system |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20090318 Termination date: 20110529 |