CN204539568U - A kind of LED power with antijamming capability and high power factor - Google Patents
A kind of LED power with antijamming capability and high power factor Download PDFInfo
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- CN204539568U CN204539568U CN201520187811.7U CN201520187811U CN204539568U CN 204539568 U CN204539568 U CN 204539568U CN 201520187811 U CN201520187811 U CN 201520187811U CN 204539568 U CN204539568 U CN 204539568U
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Abstract
A kind of LED power with antijamming capability and high power factor of the utility model, belongs to the technical field of LED power; The technical problem solved is: provide that a kind of structure is simple, antijamming capability is comparatively strong and have the LED power of high power factor; The technical scheme adopted is: a kind of LED power with antijamming capability and high power factor, comprise: AC power, reduction voltage circuit, filter circuit, rectification circuit, anti-jamming circuit and fill out paddy circuit, the output of described AC power is connected through the input of described anti-jamming circuit with described reduction voltage circuit, the output of described reduction voltage circuit is connected with the input of described filter circuit, the output of described filter circuit is connected with the input of described rectification circuit, fills out paddy circuit and be connected with LED load described in the output process of described rectification circuit; Be applicable to the application of LED power.
Description
Technical field
A kind of LED power with antijamming capability and high power factor of the utility model, belongs to the technical field of LED power.
Background technology
In recent years, because LED power has the advantage that the life-span is long, photoelectric efficiency is high, be widely used in reading lamp, flashlight, directing light of automobile, baby spot, label, building profile and the field such as dome illumination, portable flash lamp, medical illumination and decorative illumination lamp, as everyone knows, for ensureing the luminosity that LED remains constant, then need to make LED remain on accurate power supply constant current value, for obtaining power supply constant current value, first AC power input rectifying is direct current by traditional LED power, another mistake becomes high frequency, eventually pass current rectifying and wave filtering circuit to export, obtain galvanic current pressure, this way makes in whole circuit containing a large amount of humorous wave interference, in addition, due to the spike that the leakage inductance of transformer and the reverse recovery current of output diode cause, then electromagnetic interference can be formed, these humorous wave interference and electromagnetic interference not only can cause harmonic distortion, the active power exported after causing filtering significantly reduces, power factor is significantly reduced, and the parts of LED power are impacted, cause the reduction in power supply useful life.
Along with energy-conserving and environment-protective are worldwide day by day concerned, the requirement of people to antijamming capability and power factor that various power supply product comprises LED illuminating product also improves constantly, therefore, reduce the harmonic distortion of LED power, raising LED power power factor just seems particularly important.
Utility model content
The utility model overcomes the deficiency that prior art exists, and technical problem to be solved is: provide that a kind of structure is simple, antijamming capability is comparatively strong and have the LED power of high power factor.
In order to solve the problems of the technologies described above, the technical solution adopted in the utility model is:
A kind of LED power with antijamming capability and high power factor, comprise: AC power, reduction voltage circuit, filter circuit, rectification circuit, anti-jamming circuit and fill out paddy circuit, the output of described AC power is connected through the input of described anti-jamming circuit with described reduction voltage circuit, the output of described reduction voltage circuit is connected with the input of described filter circuit, the output of described filter circuit is connected with the input of described rectification circuit, fills out paddy circuit and be connected with LED load described in the output process of described rectification circuit.
Described anti-jamming circuit comprises safety electric capacity C1, described reduction voltage circuit comprises resistance R1 and electric capacity C2, described filter circuit comprises inductance L 1 and electric capacity C3, described rectification circuit comprises rectifier bridge T1, described paddy circuit of filling out comprises diode D1, diode D2, diode D3, electric capacity C4, electric capacity C5 and electric capacity C6, and described LED load comprises light-emitting diode D4, one end of described safety electric capacity C1 is also connected with one end of fuse F1 after connecing one end of described resistance R1, the other end of described fuse F1 is connected with the live wire L of described AC power, be connected with the forward ac input end of described rectifier bridge T1 with one end of described electric capacity C3 respectively after the other end of described resistance R1 is connected in series described inductance L 1, described electric capacity C2 is attempted by the two ends of described resistance R1, the forward dc output of described rectifier bridge T1 also connects the negative pole of described diode D1, the positive pole of one end of described electric capacity C5 and the described diode D1 that is connected with the positive pole of described light-emitting diode D4 behind one end of described electric capacity C6 is also connected with one end of described electric capacity C4 after connecing the negative pole of described diode D2, the positive pole of described diode D2 is also connected with the negative pole of described diode D3 after connecing the other end of described electric capacity C5, the negative pole of described light-emitting diode D4 is also connected with the negative sense DC output end of described rectifier bridge T1 after connecing the other end of described electric capacity C6, the positive pole of described diode D3 and the other end of described electric capacity C4, and the negative sense ac input end of described rectifier bridge T1 the other end meeting described electric capacity C3 are connected with the zero line N of described AC power with after the other end of described safety electric capacity C1.
The utility model compared with prior art has following beneficial effect:
A kind of LED power with antijamming capability and high power factor in the utility model, comprising: AC power, reduction voltage circuit, filter circuit, rectification circuit, anti-jamming circuit and fill out paddy circuit; Described anti-jamming circuit comprises safety electric capacity C1, can play the effect of anti-interference filtration, and can carry out step-down to input voltage by reduction voltage circuit, avoid use transformer to whole power circuit, reduces the electromagnetic interference in circuit; Simultaneously, filter circuit in the utility model adopts LC filter, High frequency filter can be carried out to the voltage after step-down, and by rectification circuit, rectification is carried out to step-down, filtered voltage, subsequently, by being parallel to described rectification circuit output end fills out paddy circuit, significantly can increase the angle of flow of rectification circuit, and by filling and leading up valley point, make input current become the waveform close to sine wave from spike, improve the power factor of circuit; Whole circuit structure is simple, power factor compensation Be very effective, practical.
Accompanying drawing explanation
Below in conjunction with accompanying drawing, the utility model is described in more detail;
Fig. 1 is the utility model structural representation;
Fig. 2 is circuit theory diagrams of the present utility model;
In figure: 1 is AC power, 2 is reduction voltage circuit, and 3 is filter circuit, and 4 is rectification circuit, and 5 is anti-jamming circuit, and 6 for filling out paddy circuit.
Embodiment
As Fig. 1, shown in Fig. 2, a kind of LED power with antijamming capability and high power factor, comprise: AC power 1, reduction voltage circuit 2, filter circuit 3 and rectification circuit 4, anti-jamming circuit 5 and fill out paddy circuit 6, the output of described AC power 1 is connected through the input of described anti-jamming circuit 5 with described reduction voltage circuit 2, the output of described reduction voltage circuit 2 is connected with the input of described filter circuit 3, the output of described filter circuit 3 is connected with the input of described rectification circuit 4, fill out paddy circuit 6 described in the output process of described rectification circuit 4 to be connected with LED load.
In the present embodiment, described anti-jamming circuit 5 comprises safety electric capacity C1, described reduction voltage circuit 2 comprises resistance R1 and electric capacity C2, described filter circuit 3 comprises inductance L 1 and electric capacity C3, described rectification circuit 4 comprises rectifier bridge T1, described paddy circuit 6 of filling out comprises diode D1, diode D2, diode D3, electric capacity C4, electric capacity C5 and electric capacity C6, and described LED load comprises light-emitting diode D4, one end of described safety electric capacity C1 is also connected with one end of fuse F1 after connecing one end of described resistance R1, the other end of described fuse F1 is connected with the live wire L of described AC power 1, be connected with the forward ac input end of described rectifier bridge T1 with one end of described electric capacity C3 respectively after the other end of described resistance R1 is connected in series described inductance L 1, described electric capacity C2 is attempted by the two ends of described resistance R1, the forward dc output of described rectifier bridge T1 also connects the negative pole of described diode D1, the positive pole of one end of described electric capacity C5 and the described diode D1 that is connected with the positive pole of described light-emitting diode D4 behind one end of described electric capacity C6 is also connected with one end of described electric capacity C4 after connecing the negative pole of described diode D2, the positive pole of described diode D2 is also connected with the negative pole of described diode D3 after connecing the other end of described electric capacity C5, the negative pole of described light-emitting diode D4 is also connected with the negative sense DC output end of described rectifier bridge T1 after connecing the other end of described electric capacity C6, the positive pole of described diode D3 and the other end of described electric capacity C4, and the negative sense ac input end of described rectifier bridge T1 the other end meeting described electric capacity C3 are connected with the zero line N of described AC power 1 with after the other end of described safety electric capacity C1.
Particularly, in the utility model, described anti-jamming circuit comprises safety electric capacity C1, the effect of anti-interference filtration can be played to whole power circuit, and step-down can be carried out to input voltage by reduction voltage circuit, avoid use transformer, reduce the electromagnetic interference in circuit; Further, filter circuit in the utility model adopts LC filter, High frequency filter can be carried out to the voltage after step-down, and by rectification circuit, rectification is carried out to step-down, filtered voltage, subsequently, by being parallel to described rectification circuit output end fills out paddy circuit, significantly can increase the angle of flow of rectification circuit, by filling and leading up valley point, making input current become the waveform close to sine wave from spike, improving the power factor of circuit.
The utility model provides a kind of LED power with antijamming capability and high power factor, input current waveform can be made to become close to sine wave from spike, significantly can improve power factor, remarkable reduction harmonic distortion, solve the problem that traditional LED power antijamming capability is more weak, power factor is lower, there is substantive distinguishing features and progress; By reference to the accompanying drawings embodiment of the present utility model is explained in detail above, but the utility model 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 the utility model aim.
Claims (2)
1. one kind has the LED power of antijamming capability and high power factor, comprise: AC power (1), reduction voltage circuit (2), filter circuit (3) and rectification circuit (4), it is characterized in that: also comprise: anti-jamming circuit (5) and fill out paddy circuit (6), the output of described AC power (1) is connected through the input of described anti-jamming circuit (5) with described reduction voltage circuit (2), the output of described reduction voltage circuit (2) is connected with the input of described filter circuit (3), the output of described filter circuit (3) is connected with the input of described rectification circuit (4), fill out paddy circuit (6) described in the output process of described rectification circuit (4) to be connected with LED load.
2. a kind of LED power with antijamming capability and high power factor according to claim 1, it is characterized in that: described anti-jamming circuit (5) comprises safety electric capacity C1, described reduction voltage circuit (2) comprises resistance R1 and electric capacity C2, described filter circuit (3) comprises inductance L 1 and electric capacity C3, described rectification circuit (4) comprises rectifier bridge T1, described paddy circuit (6) of filling out comprises diode D1, diode D2, diode D3, electric capacity C4, electric capacity C5 and electric capacity C6, and described LED load comprises light-emitting diode D4;
One end of described safety electric capacity C1 is also connected with one end of fuse F1 after connecing one end of described resistance R1, the other end of described fuse F1 is connected with the live wire L of described AC power (1), be connected with the forward ac input end of described rectifier bridge T1 with one end of described electric capacity C3 respectively after the other end of described resistance R1 is connected in series described inductance L 1, described electric capacity C2 is attempted by the two ends of described resistance R1, the forward dc output of described rectifier bridge T1 also connects the negative pole of described diode D1, the positive pole of one end of described electric capacity C5 and the described diode D1 that is connected with the positive pole of described light-emitting diode D4 behind one end of described electric capacity C6 is also connected with one end of described electric capacity C4 after connecing the negative pole of described diode D2, the positive pole of described diode D2 is also connected with the negative pole of described diode D3 after connecing the other end of described electric capacity C5, the negative pole of described light-emitting diode D4 is also connected with the negative sense DC output end of described rectifier bridge T1 after connecing the other end of described electric capacity C6, the positive pole of described diode D3 and the other end of described electric capacity C4, and the negative sense ac input end of described rectifier bridge T1 the other end meeting described electric capacity C3 are connected with the zero line N of described AC power (1) with after the other end of described safety electric capacity C1.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520187811.7U CN204539568U (en) | 2015-03-31 | 2015-03-31 | A kind of LED power with antijamming capability and high power factor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520187811.7U CN204539568U (en) | 2015-03-31 | 2015-03-31 | A kind of LED power with antijamming capability and high power factor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204539568U true CN204539568U (en) | 2015-08-05 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520187811.7U Expired - Fee Related CN204539568U (en) | 2015-03-31 | 2015-03-31 | A kind of LED power with antijamming capability and high power factor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204539568U (en) |
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2015
- 2015-03-31 CN CN201520187811.7U patent/CN204539568U/en not_active Expired - Fee Related
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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 | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150805 Termination date: 20170331 |