CN201623887U - LED power source - Google Patents
LED power source Download PDFInfo
- Publication number
- CN201623887U CN201623887U CN2009202780854U CN200920278085U CN201623887U CN 201623887 U CN201623887 U CN 201623887U CN 2009202780854 U CN2009202780854 U CN 2009202780854U CN 200920278085 U CN200920278085 U CN 200920278085U CN 201623887 U CN201623887 U CN 201623887U
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- CN
- China
- Prior art keywords
- circuit
- power supply
- led
- current
- led power
- 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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- 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
- Y02B70/00—Technologies for an efficient end-user side electric power management and consumption
- Y02B70/10—Technologies improving the efficiency by using switched-mode power supplies [SMPS], i.e. efficient power electronics conversion e.g. power factor correction or reduction of losses in power supplies or efficient standby modes
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- Led Devices (AREA)
Abstract
The utility model discloses an LED power source comprising an EMI filter circuit, a rectification filter circuit, a PFC power factor correcting circuit, an ancillary circuit, a PWM power circuit, a step-down constant-current circuit and a reaction circuit, wherein the power source further comprises an output load terminal and a dimming signal circuit, and the output load terminal is connected with the rectification filter circuit and the EMI filter circuit via the step-down constant-current circuit, the ancillary circuit and the PFC power factor correcting circuit; the step-down constant-current circuit is connected with the ancillary circuit via the PWM power circuit; and the output load terminal is further connected with the PWM power circuit via the reaction circuit and the dimming signal circuit. With simple structure and inexpensive manufacturing cost, the utility model efficiently controls the LED, reduces the LED light decay, and prolongs the service life of the LED power source.
Description
Technical field
The utility model relates to the correlative technology field of electric lighting control, relates in particular to a kind of light modulation LED power supply.
Background technology
In this year, along with the high speed development of urban construction and electronics and information industry, people grow with each passing day to the demand of light source.The development of the LED of world today technology, the especially fast development of dimming LED (Light Emitting Diode) technology.And the LED luminosity as Lawn lamp, corner lamp, clearance light and street lamp, mostly can't be regulated according to actual needs automatically in existing LED Landscape Lighting field, and energy-saving effect is not good.
Summary of the invention
For solving above-mentioned middle problem and the defective that exists, the utility model provides a kind of LED power supply.Described technical scheme is as follows:
A kind of LED power supply comprises:
EMI filter circuit, current rectifying and wave filtering circuit, PFC circuit of power factor correction, auxiliary circuit, pwm power circuit, step-down constant-current circuit and feedback circuit, described power supply also comprises an output loading end and a dim signal circuit, and described output loading end links to each other by described step-down constant-current circuit, auxiliary circuit, PFC circuit of power factor correction and current rectifying and wave filtering circuit and EMI filter circuit; Described step-down constant-current circuit also links to each other with described auxiliary circuit by the pwm power circuit; Described output loading end also links to each other with described pwm power circuit with the dim signal circuit by feedback circuit.
Described LED power supply also comprises current sampling circuit, LED power supply that its LED power supply is a controllable silicon light modulation mode and constant current control mode LED power supply.
Described LED power supply also comprises over-pressure safety device and short-circuit protection.
Comprise AC-DC power supply, LED tunable optical constant-current source and current sampling circuit in the LED power supply of described controllable silicon light modulation mode.
Comprise in the described dim signal circuit that one produces the chip of dim signal, and in this chip, include a messaging software.
The beneficial effect of the technical scheme that the utility model provides is:
Simple in structure, cheap, control LED efficiently, well reduced the LED light decay, prolonged its useful life.
Description of drawings
Fig. 1 is an electrical block diagram of the present utility model.
Embodiment
For making the purpose of this utility model, technical scheme and advantage clearer, the utility model execution mode is described in further detail below in conjunction with accompanying drawing:
As shown in Figure 1, showed circuit structure of the present utility model, comprise EMI filter circuit 10, current rectifying and wave filtering circuit 20, PFC circuit of power factor correction 30, auxiliary circuit 40, pwm power circuit 50, step-down constant-current circuit 60 and feedback circuit 80, described power supply also comprises an output loading end 70 and a dim signal circuit 90, and described output loading end links to each other by described step-down constant-current circuit, auxiliary circuit, PFC circuit of power factor correction and current rectifying and wave filtering circuit and EMI filter circuit; Described step-down constant-current circuit also links to each other with described auxiliary circuit by the pwm power circuit; Described output loading end also links to each other with described pwm power circuit with the dim signal circuit by feedback circuit.The LED power supply is the LED power supply of controllable silicon light modulation mode and the LED power supply of constant current control mode, in its LED power supply output over-voltage protection and short-circuit protection is arranged.
The performance of the LED power supply of above-mentioned controllable silicon light modulation mode and constant current control mode LED power supply is AC-DC power supply, LED tunable optical constant-current source, current sampling circuit.The chip that includes a light modulation in its dim signal circuit, and in this chip, be solidified with messaging software.
Foregoing circuit output PWM dim signal driving LED tunable optical constant-current source, and then realize the light modulation of LED silicon controlled, solved the compatibility of LED illumination with traditional lighting.There is very big application prospect in this LED crossing current source that is adapted at the illuminator AC controllable silicon light modulation mode aspect the LED illumination that requires under controllable silicon light modulation mode.
The above; it only is the preferable embodiment of the utility model; but protection range of the present utility model is not limited thereto; anyly be familiar with those skilled in the art in the technical scope that the utility model discloses; the variation that can expect easily or replacement all should be encompassed within the protection range of the present utility model.Therefore, protection range of the present utility model should be as the criterion with the protection range of claim.
Claims (5)
1. LED power supply, comprise EMI filter circuit, current rectifying and wave filtering circuit, PFC circuit of power factor correction, auxiliary circuit, pwm power circuit, step-down constant-current circuit and feedback circuit, it is characterized in that, described power supply also comprises an output loading end and a dim signal circuit, and described output loading end links to each other by described step-down constant-current circuit, auxiliary circuit, PFC circuit of power factor correction and current rectifying and wave filtering circuit and EMI filter circuit; Described step-down constant-current circuit also links to each other with described auxiliary circuit by the pwm power circuit; Described output loading end also links to each other with described pwm power circuit with the dim signal circuit by feedback circuit.
2. LED power supply according to claim 1 is characterized in that, described LED power supply also comprises current sampling circuit, LED power supply that its LED power supply is a controllable silicon light modulation mode and crossing current control mode LED power supply.
3. LED power supply according to claim 1 is characterized in that, also comprises over-pressure safety device and short-circuit protection in the described LED power supply.
4. LED power supply according to claim 2 is characterized in that, comprises AC-DC power supply, LED tunable optical constant-current source and current sampling circuit in the LED power supply of described controllable silicon light modulation mode.
5. LED power supply according to claim 1 is characterized in that, comprises in the described dim signal circuit that one produces the chip of dim signal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009202780854U CN201623887U (en) | 2009-12-15 | 2009-12-15 | LED power source |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009202780854U CN201623887U (en) | 2009-12-15 | 2009-12-15 | LED power source |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201623887U true CN201623887U (en) | 2010-11-03 |
Family
ID=43027339
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009202780854U Expired - Fee Related CN201623887U (en) | 2009-12-15 | 2009-12-15 | LED power source |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201623887U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102045928A (en) * | 2010-12-18 | 2011-05-04 | 惠州大景照明控制有限公司 | LED (light-emitting diode) lamp power supply capable of dimming |
| CN103277759A (en) * | 2013-05-13 | 2013-09-04 | 东莞市中实创半导体照明有限公司 | Mains supply power-supplying LED integrated light source |
| CN106211480A (en) * | 2016-08-31 | 2016-12-07 | 合肥学院 | A kind of non-isolated buck high-power LED driving power source |
-
2009
- 2009-12-15 CN CN2009202780854U patent/CN201623887U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102045928A (en) * | 2010-12-18 | 2011-05-04 | 惠州大景照明控制有限公司 | LED (light-emitting diode) lamp power supply capable of dimming |
| CN103277759A (en) * | 2013-05-13 | 2013-09-04 | 东莞市中实创半导体照明有限公司 | Mains supply power-supplying LED integrated light source |
| CN106211480A (en) * | 2016-08-31 | 2016-12-07 | 合肥学院 | A kind of non-isolated buck high-power LED driving power source |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| DD01 | Delivery of document by public notice |
Addressee: Le Mingxia Document name: Notification to Make Rectification |
|
| 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: 20101103 Termination date: 20111215 |