CN204669680U - LED brightness adjustment control and driving governor - Google Patents
LED brightness adjustment control and driving governor Download PDFInfo
- Publication number
- CN204669680U CN204669680U CN201520388173.5U CN201520388173U CN204669680U CN 204669680 U CN204669680 U CN 204669680U CN 201520388173 U CN201520388173 U CN 201520388173U CN 204669680 U CN204669680 U CN 204669680U
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- CN
- China
- Prior art keywords
- led
- light adjusting
- adjusting circuit
- pwm
- source
- 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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Classifications
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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
Landscapes
- Circuit Arrangement For Electric Light Sources In General (AREA)
Abstract
The utility model relates to LED light source drive control apparatus technical field, specifically a kind of rational in infrastructure, cost is low, LED brightness adjustment control that light-source brightness increases gradually and driving governor can be controlled, it is characterized in that being provided with microcontroller chip, light adjusting circuit, drive circuit, wherein microcontroller chip is connected with light adjusting circuit, drive circuit respectively, and described light adjusting circuit is PWM light adjusting circuit, in use, when PWM ripple exports high level, triode VQ
1conducting, thus make the grid voltage of MOSFET lower than source voltage, the source electrode of MOSFET and drain electrode conducting, LED lights; When PWM ripple output low level, VQ
1cut-off, LED extinguishes.When PWM frequency is more than 100Hz, when the conducting of the average LED of human viewable and cut-off, produce the sensation of LED luminance change, its brightness is directly proportional to LED turn-on cycle, has the significant advantages such as rational in infrastructure, working stability, cost are low.
Description
Technical field:
The utility model relates to LED light source drive control apparatus technical field, specifically a kind of rational in infrastructure, cost is low, can control LED brightness adjustment control that light-source brightness increases gradually and driving governor.
Background technology:
The new type light source such as LED all achieves very much progress on material and manufacturing process in recent years, due to its have that luminous efficiency is high relative to conventional light source, long service life, the feature such as bright-colored, various domain variability can be widely used in and replace traditional incandescent lamp as lighting source gradually.The LED illumination light source light adjusting circuit cost of present stage is high, is unfavorable for large-scale promotion application.
Summary of the invention:
The utility model for the shortcoming and defect existed in prior art, propose a kind of rational in infrastructure, cost is low, can control LED brightness adjustment control that light-source brightness increases gradually and driving governor.
The utility model is reached by following measures:
A kind of LED brightness adjustment control and driving governor, it is characterized in that being provided with microcontroller chip, light adjusting circuit, drive circuit, wherein microcontroller chip is connected with light adjusting circuit, drive circuit respectively, and described light adjusting circuit is PWM light adjusting circuit.
P channel power MOS FET IRF9540 is provided with in drive circuit described in the utility model, for the formation of NPN triode drive amplification circuit, when drive circuit Direct driver power MOSFET tube, turning on and off fast of driven MOSFET can be caused, easily cause the oscillation of MOSFET drain-source interpolar, therefore connect noninductive resistance R1 between the grid and the output of drive circuit of MOSFET.
Microcontroller chip described in the utility model adopts ATmega16, the 4 passage PWM that can directly utilize it to carry.
The utility model in use, when PWM ripple export high level time, triode VQ
1conducting, thus make the grid voltage of MOSFET lower than source voltage, the source electrode of MOSFET and drain electrode conducting, LED lights; When PWM ripple output low level, VQ
1cut-off, LED extinguishes.When PWM frequency is more than 100Hz, when the conducting of the average LED of human viewable and cut-off, produce the sensation of LED luminance change, its brightness is directly proportional to LED turn-on cycle.
The utility model compared with prior art, can complete the driving to LED light source and brightness adjustment control, has the significant advantages such as rational in infrastructure, working stability, cost are low.
Accompanying drawing illustrates:
Accompanying drawing 1 is structured flowchart of the present utility model.
Reference numeral: microcontroller chip 1, light adjusting circuit 2, drive circuit 3.
Embodiment:
Below in conjunction with accompanying drawing, the utility model is further described.
As shown in drawings, the utility model proposes a kind of LED brightness adjustment control and driving governor, it is characterized in that being provided with microcontroller chip 1, light adjusting circuit 2, drive circuit 3, wherein microcontroller chip 1 is connected with light adjusting circuit 2, drive circuit 3 respectively, and described light adjusting circuit 2 is PWM light adjusting circuit.
P channel power MOS FET IRF9540 is provided with in drive circuit 3 described in the utility model, for the formation of NPN triode drive amplification circuit, when drive circuit Direct driver power MOSFET tube, turning on and off fast of driven MOSFET can be caused, easily cause the oscillation of MOSFET drain-source interpolar, therefore connect noninductive resistance R1 between the grid and the output of drive circuit of MOSFET.
Microcontroller chip 1 described in the utility model adopts ATmega16, the 4 passage PWM that can directly utilize it to carry.
The utility model in use, when PWM ripple export high level time, triode VQ
1conducting, thus make the grid voltage of MOSFET lower than source voltage, the source electrode of MOSFET and drain electrode conducting, LED lights; When PWM ripple output low level, VQ
1cut-off, LED extinguishes.When PWM frequency is more than 100Hz, when the conducting of the average LED of human viewable and cut-off, produce the sensation of LED luminance change, its brightness is directly proportional to LED turn-on cycle.
The utility model compared with prior art, can complete the driving to LED light source and brightness adjustment control, has the significant advantages such as rational in infrastructure, working stability, cost are low.
Claims (3)
1. LED brightness adjustment control and a driving governor, it is characterized in that being provided with microcontroller chip, light adjusting circuit, drive circuit, wherein microcontroller chip is connected with light adjusting circuit, drive circuit respectively, and described light adjusting circuit is PWM light adjusting circuit.
2. a kind of LED brightness adjustment control according to claim 1 and driving governor, it is characterized in that being provided with P channel power MOS FET IRF9540 in described drive circuit, connect noninductive resistance R1 between the grid and the output of drive circuit of MOSFET.
3. a kind of LED brightness adjustment control according to claim 1 and driving governor, is characterized in that described microcontroller chip adopts ATmega16.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520388173.5U CN204669680U (en) | 2015-06-05 | 2015-06-05 | LED brightness adjustment control and driving governor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520388173.5U CN204669680U (en) | 2015-06-05 | 2015-06-05 | LED brightness adjustment control and driving governor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204669680U true CN204669680U (en) | 2015-09-23 |
Family
ID=54140016
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520388173.5U Expired - Fee Related CN204669680U (en) | 2015-06-05 | 2015-06-05 | LED brightness adjustment control and driving governor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204669680U (en) |
-
2015
- 2015-06-05 CN CN201520388173.5U patent/CN204669680U/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: 20150923 Termination date: 20180605 |