CN204518145U - The driving power of high pressure low current LED - Google Patents
The driving power of high pressure low current LED Download PDFInfo
- Publication number
- CN204518145U CN204518145U CN201520143112.2U CN201520143112U CN204518145U CN 204518145 U CN204518145 U CN 204518145U CN 201520143112 U CN201520143112 U CN 201520143112U CN 204518145 U CN204518145 U CN 204518145U
- Authority
- CN
- China
- Prior art keywords
- power module
- circuit
- high pressure
- electric capacity
- rectifier bridge
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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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 relates to a kind of driving power of high pressure low current LED; it is the power module comprising electric capacity, fuse; wherein; rectifier bridge (1) is adopted to replace dual transformer; the input termination fuse R(2 of described rectifier bridge (1)); output parallel electrolytic electric capacity C(3) and discharge tube (4), the output plus terminal of power module connects current regulator diode (5), makes power module have overvoltage, overcurrent and overheat protector.Have that structure is simple, cost is low and better feature of circuit being carried out to effectively monitoring, can effectively prevent circuit from constantly generating heat; When power supply short circuit, even if can ensure that LED lamp is not burnt when short circuit yet; When supply voltage is too high, even if can ensure that LED lamp is not burnt when overtension yet; That power supply has higher fail safe like this.
Description
Technical field
The utility model relates to a kind of driving power of high pressure low current LED, belongs to LED power technical field.
Background technology
Traditional LED drive power, adopts two transformers to realize usually.The special boosting IC of matched transformer one completes boosting; The special PWM chip of another matched transformer is responsible for voltage transitions.The circuit of this framework, not only there is number of elements many, the problem that cost is high, and take PCB(Printed circuit board printed circuit board) the large problem in space particularly highlights, cannot be applied in and need the explosion-proof lamp field of on-chip power in less cavity; To the occasion of limited space, also also exist simultaneously and implacable problem is required to the safe distance of safety standard.Traditional single-stage LED drive power, single transformer is adopted to complete Active Power Factor Correction APFC(Active Power Factor Correction) and voltage transformation, it is on the low side that ubiquity power factor PF, higher and the not high phenomenon of constant current accuracy of total harmonic distortion THD (total harmonic distortion), be difficult to accomplish full voltage 85V ~ 265VAC reliable operation, and switching on and shutting down when inputting high pressure 220V or more of being everlasting easily cause power supply to damage.Particularly its short-circuit protection and overheat protector function imperfection, make LED drive power in use very easily damage, and some loop power supply out of control even can burn out light fixture.
In process of production, open loop phenomenon can cause output voltage electric current uncontrollable, damages the elements such as electrochemical capacitor, causes unnecessary waste.Be necessary to propose a kind of new solution for this reason.
Summary of the invention
Technical problem to be solved in the utility model is: the driving power providing a kind of high pressure low current LED, while minimizing component number, can provide the problem of the overheat protector of LED driving power, overvoltage protection and overcurrent protection.
The utility model technical problem is realized by following proposal: a kind of driving power of high pressure low current LED; it is the power module comprising electric capacity, fuse; wherein; rectifier bridge is adopted to replace dual transformer; the input termination fuse R of described rectifier bridge; output parallel electrolytic electric capacity C and discharge tube, the output plus terminal of power module connects current regulator diode, makes power module have overvoltage, overcurrent and overheat protector.
Principle of the present utility model is: 220V alternating current, through rectifier bridge, converts alternating current to direct current, through capacitor filtering, and adopts current regulator diode to carry out constant current.
The utility model, by the control to current regulator diode voltage, comes to control circuit temperature; By the overcurrent fusing of fuse, overcurrent protection is carried out to circuit; By the overvoltage short circuit of discharge tube, overvoltage protection is carried out to circuit.
Superiority of the present utility model is: structure is simple, and cost is low, has and better effectively monitors circuit, can effectively prevent circuit from constantly generating heat, when power supply short circuit, even if can ensure that LED lamp is not burnt when short circuit yet; When supply voltage is too high, even if can ensure that LED lamp is not burnt when overtension yet; That power supply has higher fail safe like this.
Accompanying drawing illustrates:
Accompanying drawing 1 the utility model circuit theory diagrams;
Wherein:
1---rectifier bridge; 2---fuse;
3---electric capacity; 4---discharge tube;
5---current regulator diode.
Embodiment
Shown in accompanying drawing 1 the utility model circuit theory diagrams; a kind of driving power of high pressure low current LED; it is the power module comprising electric capacity, fuse; wherein; rectifier bridge 1 is adopted to replace dual transformer, the input termination fuse 2 of described rectifier bridge 1, output parallel electrolytic electric capacity C3 and discharge tube 4; the output plus terminal of power module connects current regulator diode 5, makes power module have overvoltage, overcurrent and overheat protector.
Rectifier bridge 1 converts 220V alternating current to direct current, through electric capacity 3 filtering, and adopts current regulator diode to carry out constant current.
The utility model, by the control to current regulator diode voltage, comes to control circuit temperature.
By the overcurrent fusing of fuse, overcurrent protection is carried out to circuit.
By the overvoltage short circuit of discharge tube, overvoltage protection is carried out to circuit.
Above the driving power of the high pressure low current LED that the present embodiment provides and circuit protection are described in detail, principle of the present utility model and execution mode are set forth, and the explanation of above enforcement is just for helping method and the core concept thereof of understanding this programme; Meanwhile, for one of ordinary skill in the art, according to thought of the present invention, all will change in specific embodiments and applications, in sum, this description should not be construed as the restriction to this programme.
Claims (1)
1. the driving power of a high pressure low current LED; it is the power module comprising electric capacity, fuse; it is characterized in that; rectifier bridge (1) is adopted to replace dual transformer; the input termination fuse R(2 of described rectifier bridge (1)); output parallel electrolytic electric capacity C(3) and discharge tube (4), the output plus terminal of power module connects current regulator diode (5), makes power module have overvoltage, overcurrent and overheat protector.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520143112.2U CN204518145U (en) | 2015-03-13 | 2015-03-13 | The driving power of high pressure low current LED |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520143112.2U CN204518145U (en) | 2015-03-13 | 2015-03-13 | The driving power of high pressure low current LED |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204518145U true CN204518145U (en) | 2015-07-29 |
Family
ID=53716070
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520143112.2U Expired - Fee Related CN204518145U (en) | 2015-03-13 | 2015-03-13 | The driving power of high pressure low current LED |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204518145U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106356824A (en) * | 2016-09-21 | 2017-01-25 | 天津百利机械装备研究院有限公司 | 220KV current transformer electricity-using overcurrent protection circuit |
-
2015
- 2015-03-13 CN CN201520143112.2U patent/CN204518145U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106356824A (en) * | 2016-09-21 | 2017-01-25 | 天津百利机械装备研究院有限公司 | 220KV current transformer electricity-using overcurrent protection circuit |
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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 |
Granted publication date: 20150729 Termination date: 20190313 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |