CN204795704U - Anti -interference LED drive circuit of high efficiency - Google Patents
Anti -interference LED drive circuit of high efficiency Download PDFInfo
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- CN204795704U CN204795704U CN201520351485.9U CN201520351485U CN204795704U CN 204795704 U CN204795704 U CN 204795704U CN 201520351485 U CN201520351485 U CN 201520351485U CN 204795704 U CN204795704 U CN 204795704U
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- 238000004804 winding Methods 0.000 claims abstract description 17
- 230000000087 stabilizing effect Effects 0.000 claims description 4
- 230000003287 optical effect Effects 0.000 claims description 3
- 230000036039 immunity Effects 0.000 abstract description 3
- 238000002955 isolation Methods 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 2
- 238000001914 filtration Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000004134 energy conservation Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000005070 sampling Methods 0.000 description 1
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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
- Y02B20/40—Control techniques providing energy savings, e.g. smart controller or presence detection
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Abstract
The utility model discloses an anti -interference LED drive circuit of high efficiency, including rectifier bridge T, resistance R1, electric capacity C1 and triode V1, rectifier bridge T's port 1 connecting resistance R1, electric capacity C1 and 220V alternating current, electric capacity C1's other end connecting resistance R1's the other end, the other end of 220V alternating current and rectifier bridge T's port 3. The utility model discloses LED drive circuit adopts TNY268P type switching power supply control chip as controlling element, has integrated level height, stable performance, fast advantage, has consequently improved drive circuit's efficiency, and simultaneously at two parallelly connected diodes of the primary winding of transformer, the spike voltage clamper that can produce the transformer leakage inductance is to safe worth to the ringing voltage of attenuateing, therefore the circuit has simple structure, output is stable, efficient, interference immunity is strong advantage.
Description
Technical field
The utility model relates to a kind of drive circuit, specifically a kind of high efficiency anti-interference LED drive circuit.
Background technology
LED has the advantages such as environmental protection, energy-conservation, the life-span is long and is regarded as 21 century lighting source, has now started to replace conventional light source and has widely applied on various lighting.But, because LED self character determines that its driving power can not adopt same power supply with ordinary incandescent lamp, current most LED drive circuit many uses transformer isolation mode, Transformer Winding can produce peak voltage when being coupled, thus affects the stability of output voltage.
Utility model content
The purpose of this utility model is the high efficiency anti-interference LED drive circuit providing a kind of structure simple, applied widely, to solve the problem proposed in above-mentioned background technology.
For achieving the above object, the utility model provides following technical scheme:
A kind of high efficiency anti-interference LED drive circuit, comprise rectifier bridge T, resistance R1, electric capacity C1 and triode V1, port one contact resistance R1, the electric capacity C1 of described rectifier bridge T and 220V alternating current, the port 3 of the other end of other end contact resistance R1 of electric capacity C1, the other end of 220V alternating current and rectifier bridge T, the port 2 of rectifier bridge T connects electric capacity C2 and inductance L 1, the other end of electric capacity C2 connects the port 4 of inductance L 3 and rectifier bridge T, other end contact resistance R2, the electric capacity C3 of inductance L 1, electric capacity C4, electric capacity C7, the anode of diode D1 and the winding N1 of transformer W.The negative electrode of diode D1 connects the negative electrode of diode D2, the plus earth of diode D2, the other end of inductance L 3 connects the other end of electric capacity C3, electric capacity C6, the pin S of chip IC 1 and the pin 3 of chip IC 2, the other end of resistance R2 connects the other end of electric capacity C4 and the negative electrode of diode D3, the other end of winding N1 of the anode connection transformer W of diode D3 and the pin D of chip IC 1, the pin EN of chip IC 1 connects the pin 4 of chip IC 2, the pin BP of chip IC 1 connects the other end of electric capacity C6, one end of the winding N2 of transformer W connects the anode of diode D4, the negative electrode of diode D4 connects electric capacity C5, resistance R4, the emitter of triode V1 and inductance L 2, the other end of inductance L 2 connects electric capacity C6 and lamp group H, the other end contact resistance R3 of electric capacity C5, the other end of the other end of electric capacity C7 and the winding N2 of transformer W, the other end of resistance R3 connects the other end of electric capacity C6, the other end of resistance R5, resistance R6, the anode of diode D5 and lamp group H, the other end of resistance R6 connects the pin 2 of chip IC 2, the other end of pin 1 contact resistance R5 of chip IC 2 and the collector electrode of triode V1, the other end of resistance R4 connects the negative electrode of diode D5 and the base stage of triode V1.
As preferred version of the present utility model: the model of described chip IC 1 is TNY268P.
As preferred version of the present utility model: described chip IC 2 is 4N25 optical coupler.
As preferred version of the present utility model: described diode D2 is voltage stabilizing didoe.
As preferred version of the present utility model: described lamp group H is LED electricity-saving lamp group.
Compared with prior art, the beneficial effects of the utility model are: the utility model LED drive circuit adopts TNY268P type Switching Power Supply control chip as control element, have that integrated level is high, stable performance, fireballing advantage, therefore improve the efficiency of drive circuit, simultaneously at the armature winding of transformer two diodes in parallel, the peak voltage clamper that transformer leakage inductance can be produced is to safety value, and ringing voltage of decaying, therefore circuit has that structure is simple, stable output, efficiency are high, the advantage of strong interference immunity.
Accompanying drawing explanation
Fig. 1 is the circuit diagram of high efficiency anti-interference LED drive circuit.
Embodiment
Below in conjunction with the accompanying drawing in the utility model embodiment, be clearly and completely described the technical scheme in the utility model embodiment, obviously, described embodiment is only the utility model part embodiment, instead of whole embodiments.Based on the embodiment in the utility model, those of ordinary skill in the art are not making the every other embodiment obtained under creative work prerequisite, all belong to the scope of the utility model protection.
Refer to Fig. 1, a kind of high efficiency anti-interference LED drive circuit, comprise rectifier bridge T, resistance R1, electric capacity C1 and triode V1, the port one contact resistance R1 of described rectifier bridge T, electric capacity C1 and 220V alternating current, the other end of the other end contact resistance R1 of electric capacity C1, the other end of 220V alternating current and the port 3 of rectifier bridge T, the port 2 of rectifier bridge T connects electric capacity C2 and inductance L 1, the other end of electric capacity C2 connects the port 4 of inductance L 3 and rectifier bridge T, the other end contact resistance R2 of inductance L 1, electric capacity C3, electric capacity C4, electric capacity C7, the anode of diode D1 and the winding N1 of transformer W.The negative electrode of diode D1 connects the negative electrode of diode D2, the plus earth of diode D2, the other end of inductance L 3 connects the other end of electric capacity C3, electric capacity C6, the pin S of chip IC 1 and the pin 3 of chip IC 2, the other end of resistance R2 connects the other end of electric capacity C4 and the negative electrode of diode D3, the other end of winding N1 of the anode connection transformer W of diode D3 and the pin D of chip IC 1, the pin EN of chip IC 1 connects the pin 4 of chip IC 2, the pin BP of chip IC 1 connects the other end of electric capacity C6, one end of the winding N2 of transformer W connects the anode of diode D4, the negative electrode of diode D4 connects electric capacity C5, resistance R4, the emitter of triode V1 and inductance L 2, the other end of inductance L 2 connects electric capacity C6 and lamp group H, the other end contact resistance R3 of electric capacity C5, the other end of the other end of electric capacity C7 and the winding N2 of transformer W, the other end of resistance R3 connects the other end of electric capacity C6, the other end of resistance R5, resistance R6, the anode of diode D5 and lamp group H, the other end of resistance R6 connects the pin 2 of chip IC 2, the other end of pin 1 contact resistance R5 of chip IC 2 and the collector electrode of triode V1, the other end of resistance R4 connects the negative electrode of diode D5 and the base stage of triode V1.
The model of chip IC 1 is TNY268P.Chip IC 2 is 4N25 optical coupler.Diode D2 is voltage stabilizing didoe.Lamp group H is LED electricity-saving lamp group.
Operation principle of the present utility model is: the 220V alternating current of input is after rectifier bridge T rectifier bridge, electric capacity C1 and electric capacity C2 filtering, access power isolation transformer W, chip IC 1 is single-chip switching power supply chip TNY268P, diode D1 and D2 forms peak voltage and eliminates electric current, and the secondary output voltage of transformer is through output rectifier and filter.Diode D5, triode V1 are open loop protection circuit.TNY268P and power isolation transformer W and C7 forms switching power circuit part, and power isolation transformer W secondary winding N2 exports through D4 rectification, and C5, L2 filtering, provides direct voltage to LED group H.Switch constant-current supply is output current sampling, by Current Negative Three-Point Capacitance, and stabilizing output current.Namely the electric current flowing through load regulates the power stage of TNY268P to reach the object of constant current through the negative feedback of R3, R6 generation current through optocoupler IC2.Circuit adopts TNY268P type Switching Power Supply control chip as control element, have that integrated level is high, stable performance, fireballing advantage, therefore improve the efficiency of drive circuit, simultaneously at the armature winding of transformer two diodes in parallel, the peak voltage clamper that transformer leakage inductance can be produced is to safety value, and ringing voltage of decaying, therefore circuit has that structure is simple, stable output, efficiency are high, the advantage of strong interference immunity.
Claims (5)
1. a high efficiency anti-interference LED drive circuit, comprise rectifier bridge T, resistance R1, electric capacity C1 and triode V1, it is characterized in that, the port one contact resistance R1 of described rectifier bridge T, electric capacity C1 and 220V alternating current, the other end of the other end contact resistance R1 of electric capacity C1, the other end of 220V alternating current and the port 3 of rectifier bridge T, the port 2 of rectifier bridge T connects electric capacity C2 and inductance L 1, the other end of electric capacity C2 connects the port 4 of inductance L 3 and rectifier bridge T, the other end contact resistance R2 of inductance L 1, electric capacity C3, electric capacity C4, electric capacity C7, the anode of diode D1 and the winding N1 of transformer W, the negative electrode of diode D1 connects the negative electrode of diode D2, the plus earth of diode D2, the other end of inductance L 3 connects the other end of electric capacity C3, electric capacity C6, the pin S of chip IC 1 and the pin 3 of chip IC 2, the other end of resistance R2 connects the other end of electric capacity C4 and the negative electrode of diode D3, the other end of winding N1 of the anode connection transformer W of diode D3 and the pin D of chip IC 1, the pin EN of chip IC 1 connects the pin 4 of chip IC 2, the pin BP of chip IC 1 connects the other end of electric capacity C6, one end of the winding N2 of transformer W connects the anode of diode D4, the negative electrode of diode D4 connects electric capacity C5, resistance R4, the emitter of triode V1 and inductance L 2, the other end of inductance L 2 connects electric capacity C6 and lamp group H, the other end contact resistance R3 of electric capacity C5, the other end of the other end of electric capacity C7 and the winding N2 of transformer W, the other end of resistance R3 connects the other end of electric capacity C6, the other end of resistance R5, resistance R6, the anode of diode D5 and lamp group H, the other end of resistance R6 connects the pin 2 of chip IC 2, the other end of pin 1 contact resistance R5 of chip IC 2 and the collector electrode of triode V1, the other end of resistance R4 connects the negative electrode of diode D5 and the base stage of triode V1.
2. a kind of high efficiency anti-interference LED drive circuit according to claim 1, is characterized in that, the model of chip IC 1 is TNY268P.
3. a kind of high efficiency anti-interference LED drive circuit according to claim 1, it is characterized in that, chip IC 2 is 4N25 optical coupler.
4. a kind of high efficiency anti-interference LED drive circuit according to claim 1, it is characterized in that, described diode D2 is voltage stabilizing didoe.
5. a kind of high efficiency anti-interference LED drive circuit according to claim 1, is characterized in that, lamp group H is LED electricity-saving lamp group.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520351485.9U CN204795704U (en) | 2015-05-27 | 2015-05-27 | Anti -interference LED drive circuit of high efficiency |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520351485.9U CN204795704U (en) | 2015-05-27 | 2015-05-27 | Anti -interference LED drive circuit of high efficiency |
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| Publication Number | Publication Date |
|---|---|
| CN204795704U true CN204795704U (en) | 2015-11-18 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520351485.9U Expired - Fee Related CN204795704U (en) | 2015-05-27 | 2015-05-27 | Anti -interference LED drive circuit of high efficiency |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107911105A (en) * | 2017-10-19 | 2018-04-13 | 蚌埠市科达电器有限公司 | A kind of high-speed driving module |
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2015
- 2015-05-27 CN CN201520351485.9U patent/CN204795704U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107911105A (en) * | 2017-10-19 | 2018-04-13 | 蚌埠市科达电器有限公司 | A kind of high-speed driving module |
| CN107911105B (en) * | 2017-10-19 | 2019-08-27 | 蚌埠市科达电器有限公司 | A kind of high-speed driving module |
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Legal Events
| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20151118 Termination date: 20160527 |
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| CF01 | Termination of patent right due to non-payment of annual fee |