CN204539566U - A kind of New LED driving power - Google Patents
A kind of New LED driving power Download PDFInfo
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- CN204539566U CN204539566U CN201520187791.3U CN201520187791U CN204539566U CN 204539566 U CN204539566 U CN 204539566U CN 201520187791 U CN201520187791 U CN 201520187791U CN 204539566 U CN204539566 U CN 204539566U
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Abstract
The utility model belongs to the technical field of LED drive power; The technical problem solved is: the New LED driving power providing a kind of anti-electromagnetic interference; The technical scheme adopted is: a kind of New LED driving power, comprising: the Alternating Current Power Supply module, rectification module and the LED drive module that are electrically connected successively, be provided with emi protection module between rectification module and LED drive module; Be applicable to LED drive power field.
Description
Technical field
The utility model belongs to the technical field of LED drive power.
Background technology
At present, environmental pollution, energy shortage problem highlights, LED illumination is as a kind of energy-conservation form newly, due to it, to have electric light transformation efficiency high, energy-conserving and environment-protective, the advantage that life-span is long and receiving much concern, according to statistics, occupy the LED illumination device of 1/3 illumination market, annual economize on electricity about 1,680 hundred million degree electricity, be equivalent to reduction of discharging 1.2 hundred million tons of carbon dioxide, along with the extensive use of LED illumination technology, LED illumination is while energy-conservation, also new problem of knowing clearly is with, first, traditional LED drive power does not carry out emi protection design to circuit, user is made to there is great potential safety hazard in the process using this kind of LED drive power, once break down, likely cause short circuit, initiation fire time serious, jeopardize life and the property safety of user, in addition, owing to not carrying out emi protection design to power supply, thus the high-frequency signal being greater than 50HZ making LED power circuit be formed infiltrates electrical network, to electrical network feeding harmonic wave, cause extra energy loss, reduce power grid quality, cause product transformer, the heating of voltage transformer resonance is even burnt, cause electrical network resonance to threaten power grid security, therefore, a kind of LED drive power with electromagnetic interference design seems particularly important.
Utility model content
The utility model overcomes the deficiency that prior art exists, and technical problem to be solved is: the New LED driving power providing a kind of anti-electromagnetic interference.
In order to solve the problems of the technologies described above, the technical solution adopted in the utility model is:
A kind of New LED driving power, comprising: the Alternating Current Power Supply module, rectification module and the LED drive module that are electrically connected successively, be provided with emi protection module between described rectification module and LED drive module, described Alternating Current Power Supply module comprises civil power module, fuse F1 and variable resistor RP1, described rectification module comprises rectifier bridge D1, described emi protection module comprises inductance L 1, resistance R1 and electrochemical capacitor C1, and described LED drive module comprises constant current drived control chip U1, one end of described fuse F1 connects described civil power module, the other end of described fuse F1 is also connected with the forward ac input end of described rectifier bridge D1 after connecing one end of described variable resistor RP1, the negative sense ac input end of described rectifier bridge D1 is also connected with described civil power module after connecing the other end of described variable resistor RP1, the forward dc output of described rectifier bridge D1 is also connected with the positive pole of described electrochemical capacitor C1 after connecing one end of described inductance L 1 and one end of described resistance R1, the other end of described inductance L 1 is also connected with the positive pole of electrochemical capacitor C2 after connecing the other end of described resistance R1 and one end of resistance R2, the other end of described resistance R2 is connected with the supply power voltage end of described constant current drived control chip U1, the LED current sampling input of described constant current drived control chip U1 is connected with one end of resistance R3, the other end of described resistance R3 is also connected with the negative pole of diode VD1 after connecing one end of inductance L 2, the other end of described inductance L 2 is also connected with LED positive input terminal LED+ after connecing the positive pole of electrochemical capacitor C4 and one end of resistance R4, described LED negative input end LED-also connects the other end of described resistance R4, the negative pole of described electrochemical capacitor C4, the positive pole of described diode VD1, the negative pole of described electrochemical capacitor C2, ground connection after the negative pole of described electrochemical capacitor C1 and the negative sense DC output end of described rectifier bridge D1, the model of described constant current drived control chip U1 is SM7315P, the supply power voltage end of described constant current drived control chip U1 is DRAIN end, the LED current sampling input of described constant current drived control chip U1 is two CS ends connected together, and is connected after two GND earth terminal serial capacitance C3 connected together of described constant current drived control chip U1 with chip internal power end VDD.
The utility model compared with prior art has following beneficial effect:
A kind of New LED driving power of the utility model, comprise: the Alternating Current Power Supply module, rectification module and the LED drive module that are electrically connected successively, be provided with emi protection module between rectification module and LED drive module, emi protection module comprises inductance L 1, resistance R1 and electrochemical capacitor C1, C2; The high-frequency signal that the utility model can occur in filtering circuit, eliminate the safety of carrying, ensureing circuit to the harmonic wave of electrical network, the utility model circuit structure is simple, easy to use, practical.
Accompanying drawing explanation
Below in conjunction with accompanying drawing, the utility model is described in more detail;
Fig. 1 is circuit theory diagrams of the present utility model;
In figure: 1 is Alternating Current Power Supply module, 2 is rectification module, and 3 is LED drive module, and 4 is emi protection module, and 5 is civil power module.
Embodiment
A kind of New LED driving power, comprising: the Alternating Current Power Supply module 1 be electrically connected successively, rectification module 2 and LED drive module 3, is provided with emi protection module 4 between described rectification module 2 and LED drive module 3; Described Alternating Current Power Supply module 1 comprises civil power module 5, fuse F1 and variable resistor RP1, described rectification module 2 comprises rectifier bridge D1, described emi protection module 4 comprises inductance L 1, resistance R1 and electrochemical capacitor C1, and described LED drive module 3 comprises constant current drived control chip U1; one end of described fuse F1 connects described civil power module 5, the other end of described fuse F1 is also connected with the forward ac input end of described rectifier bridge D1 after connecing one end of described variable resistor RP1, the negative sense ac input end of described rectifier bridge D1 is also connected with described civil power module 5 after connecing the other end of described variable resistor RP1, the forward dc output of described rectifier bridge D1 is also connected with the positive pole of described electrochemical capacitor C1 after connecing one end of described inductance L 1 and one end of described resistance R1, the other end of described inductance L 1 is also connected with the positive pole of electrochemical capacitor C2 after connecing the other end of described resistance R1 and one end of resistance R2, the other end of described resistance R2 is connected with the supply power voltage end of described constant current drived control chip U1, the LED current sampling input of described constant current drived control chip U1 is connected with one end of resistance R3, the other end of described resistance R3 is also connected with the negative pole of diode VD1 after connecing one end of inductance L 2, the other end of described inductance L 2 is also connected with LED positive input terminal LED+ after connecing the positive pole of electrochemical capacitor C4 and one end of resistance R4, described LED negative input end LED-also connects the other end of described resistance R4, the negative pole of described electrochemical capacitor C4, the positive pole of described diode VD1, the negative pole of described electrochemical capacitor C2, ground connection after the negative pole of described electrochemical capacitor C1 and the negative sense DC output end of described rectifier bridge D1.
The model of described constant current drived control chip U1 is SM7315P, the supply power voltage end of described constant current drived control chip U1 is DRAIN end, the LED current sampling input of described constant current drived control chip U1 is two CS ends connected together, and is connected after two GND earth terminal serial capacitance C3 connected together of described constant current drived control chip U1 with chip internal power end VDD.
The emi protection module of a kind of New LED driving power of the utility model by arranging between rectification module and LED drive module, the high-frequency signal that can occur in filtering circuit, eliminates the safety of carrying, ensureing circuit to the harmonic wave of electrical network; The utility model circuit structure is simple, easy to use, has substantive distinguishing features and progress; By reference to the accompanying drawings embodiments of the invention are explained in detail above, but the present invention is not limited to above-described embodiment, in the ken that those of ordinary skill in the art possess, various change can also be made under the prerequisite not departing from present inventive concept.
Claims (3)
1. a New LED driving power; comprise: the Alternating Current Power Supply module (1) be electrically connected successively, rectification module (2) and LED drive module (3), is characterized in that: be provided with emi protection module (4) between described rectification module (2) and LED drive module (3).
2. a kind of New LED driving power according to claim 1, it is characterized in that: described Alternating Current Power Supply module (1) comprises civil power module (5), fuse F1 and variable resistor RP1, described rectification module (2) comprises rectifier bridge D1, described emi protection module (4) comprises inductance L 1, resistance R1 and electrochemical capacitor C1, and described LED drive module (3) comprises constant current drived control chip U1;
One end of described fuse F1 connects described civil power module (5), the other end of described fuse F1 is also connected with the forward ac input end of described rectifier bridge D1 after connecing one end of described variable resistor RP1, the negative sense ac input end of described rectifier bridge D1 is also connected with described civil power module (5) after connecing the other end of described variable resistor RP1, the forward dc output of described rectifier bridge D1 is also connected with the positive pole of described electrochemical capacitor C1 after connecing one end of described inductance L 1 and one end of described resistance R1, the other end of described inductance L 1 is also connected with the positive pole of electrochemical capacitor C2 after connecing the other end of described resistance R1 and one end of resistance R2, the other end of described resistance R2 is connected with the supply power voltage end of described constant current drived control chip U1, the LED current sampling input of described constant current drived control chip U1 is connected with one end of resistance R3, the other end of described resistance R3 is also connected with the negative pole of diode VD1 after connecing one end of inductance L 2, the other end of described inductance L 2 is also connected with LED positive input terminal LED+ after connecing the positive pole of electrochemical capacitor C4 and one end of resistance R4, described LED negative input end LED-also connects the other end of described resistance R4, the negative pole of described electrochemical capacitor C4, the positive pole of described diode VD1, the negative pole of described electrochemical capacitor C2, ground connection after the negative pole of described electrochemical capacitor C1 and the negative sense DC output end of described rectifier bridge D1.
3. a kind of New LED driving power according to claim 2, it is characterized in that: the model of described constant current drived control chip U1 is SM7315P, the supply power voltage end of described constant current drived control chip U1 is DRAIN end, the LED current sampling input of described constant current drived control chip U1 is two CS ends connected together, and is connected after two GND earth terminal serial capacitance C3 connected together of described constant current drived control chip U1 with chip internal power end VDD.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520187791.3U CN204539566U (en) | 2015-03-31 | 2015-03-31 | A kind of New LED driving power |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520187791.3U CN204539566U (en) | 2015-03-31 | 2015-03-31 | A kind of New LED driving power |
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| CN204539566U true CN204539566U (en) | 2015-08-05 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109287025A (en) * | 2018-05-14 | 2019-01-29 | 惠州市西顿工业发展有限公司 | It is a kind of to can inhibit the excessively high LED drive circuit of floating voltage |
-
2015
- 2015-03-31 CN CN201520187791.3U patent/CN204539566U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109287025A (en) * | 2018-05-14 | 2019-01-29 | 惠州市西顿工业发展有限公司 | It is a kind of to can inhibit the excessively high LED drive circuit of floating voltage |
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