CN202713680U - LED energy-saving and step-down circuit - Google Patents
LED energy-saving and step-down circuit Download PDFInfo
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- CN202713680U CN202713680U CN201220228814.7U CN201220228814U CN202713680U CN 202713680 U CN202713680 U CN 202713680U CN 201220228814 U CN201220228814 U CN 201220228814U CN 202713680 U CN202713680 U CN 202713680U
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- 230000009467 reduction Effects 0.000 claims description 12
- 238000004134 energy conservation Methods 0.000 claims description 10
- 230000008859 change Effects 0.000 abstract description 4
- 230000020169 heat generation Effects 0.000 abstract 1
- 230000007613 environmental effect Effects 0.000 description 5
- 238000010586 diagram Methods 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 230000003287 optical effect Effects 0.000 description 2
- 230000002035 prolonged effect Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 235000013305 food Nutrition 0.000 description 1
- 230000036541 health Effects 0.000 description 1
- QSHDDOUJBYECFT-UHFFFAOYSA-N mercury Chemical compound [Hg] QSHDDOUJBYECFT-UHFFFAOYSA-N 0.000 description 1
- 229910052753 mercury Inorganic materials 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
- 239000004065 semiconductor Substances 0.000 description 1
- 239000002689 soil Substances 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 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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- Circuit Arrangement For Electric Light Sources In General (AREA)
Abstract
本实用新型公开了LED节能降压电路，依次包括相互连接的电源、变压器、电压比较器、PWM模块、LED灯及MCU微控制器；电源电路的输出端连接变压器的输入端，变压器的输出端连接电压比较强的输入端，电压比较器的输出端连接PWM模块输入端，PWM模块输出端连接LED灯输入端，LED灯输出端连接MCU微处理器的输入端，MCU的输入端接电源。MCU的输入端与地输出端之间连接一热敏电阻R2。热敏电阻R2随温度阻值变化，通过采集热敏电阻R2两端的电压获得反应温度变化的电信号，电信号输入MCU微控制器后，输出电压至LED发光二极管的负极端，LED发光二极管两端电压差降低，LED发光二极管发热减少，使得LED节能灯在较低温度下达到热平衡，节约了电能，同时延长了使用寿命。
The utility model discloses an LED energy-saving step-down circuit, which sequentially includes a power supply, a transformer, a voltage comparator, a PWM module, an LED lamp and an MCU microcontroller connected to each other; the output end of the power circuit is connected to the input end of the transformer, and the output end of the transformer Connect the input terminal with relatively strong voltage, the output terminal of the voltage comparator is connected to the input terminal of the PWM module, the output terminal of the PWM module is connected to the input terminal of the LED light, the output terminal of the LED light is connected to the input terminal of the MCU microprocessor, and the input terminal of the MCU is connected to the power supply. A thermistor R2 is connected between the input terminal of the MCU and the ground output terminal. The thermistor R2 changes with the temperature resistance, and the electrical signal reflecting the temperature change is obtained by collecting the voltage across the thermistor R2. After the electrical signal is input to the MCU microcontroller, the output voltage is sent to the negative terminal of the LED light-emitting diode, and the two ends of the LED light-emitting diode The terminal voltage difference is reduced, and the heat generation of the LED light-emitting diode is reduced, so that the LED energy-saving lamp reaches a thermal balance at a lower temperature, saves electric energy, and prolongs the service life at the same time.
Description
Technical field
The utility model relates to a kind of home lighting equipment, particularly relates to the energy-conservation reduction voltage circuit of LED.
Background technology
LED is semiconductor light-emitting-diode, and the LED electricity-saving lamp is that light efficiency is high, little power consumption, long, easy to control, non-maintaining, safety and environmental protection of life-span with high brightness white light-emitting diode light emitting source; Solid cold light source of new generation, photochromic soft, gorgeous, rich and varied, low-loss, low energy consumption, environmental protection, applicable family, the market, bank, hospital, the hotel, he throws light on the restaurant various public places for a long time.Without dodging direct current, eyes are played a very good protection, be desk lamp, the optimal selection of torch.
The LED electricity-saving lamp is the lighting source of new generation behind compact fluorescent lamp (being common energy-saving lamp).Compare common energy-saving lamp, the environmental protection of LED electricity-saving lamp is not mercurous, recyclable recycling, under the power, high light efficiency, the long-life, namely open namely bright, anti-frequent switch, light decay is little, rich color, tunable optical, change is abundant.A large amount of common energy-saving lamps that use can cause mercury pollution, contaminated soil water source, thereby contaminated food products indirectly, and environmental hazard can not be despised.
That LED has is energy-efficient, extra long life, health, environmental protection, vision protection, optical efficiency is high, coefficient of safety is high, market potential is large.
The utility model content
The purpose of this utility model is to overcome the deficiencies in the prior art, and the energy-conservation reduction voltage circuit of LED is provided, and is simple in structure, energy-conserving and environment-protective, and safe and reliable, cost is low, long service life.
In order to achieve the above object, the technical solution adopted in the utility model is: the energy-conservation reduction voltage circuit of LED, and the energy-conservation reduction voltage circuit of described LED comprises interconnective power supply, transformer, voltage comparator, PWM module, LED lamp and MCU microcontroller successively; The input of the output connection transformer of power circuit, the output of transformer connects the input of voltage comparator, the output of voltage comparator connects the PWM module input, PWM module output connects LED lamp input, LED lamp output connects the output of MCU microprocessor, the input termination power of MCU microprocessor.Be connected a thermistor R2 between the input of described MCU microprocessor and the ground output.
Further, between described thermistor R2 and the MCU microprocessor ground output resistance R 3 is set also.
Compared with prior art, the beneficial effects of the utility model are: temperature sensor thermistor R2 is with the temperature change in resistance, obtain the signal of telecommunication that reaction temperature changes by the voltage that gathers thermistor R2 two ends, behind the signal of telecommunication input MCU microcontroller, through the negative pole end of modulation /demodulation output voltage to the LED light-emitting diode, the poor reduction of LED light-emitting diode both end voltage, the heating of LED light-emitting diode reduces, so that the LED electricity-saving lamp reaches heat balance at a lower temperature, save electric energy, prolonged useful life simultaneously.
Description of drawings
Fig. 1 is circuit structure schematic diagram of the present utility model.
Embodiment
Be elaborated with reference to accompanying drawing below in conjunction with embodiment, in order to technical characterictic of the present utility model and advantage are carried out more deep annotation.
Circuit structure schematic diagram of the present utility model as shown in Figure 1, the energy-conservation reduction voltage circuit of a kind of LED, the energy-conservation reduction voltage circuit of described LED comprises interconnective power supply, transformer, voltage comparator, PWM module, LED lamp and MCU microcontroller successively; The input of the output connection transformer of power circuit, the output of transformer connects the input of voltage comparator, the output of voltage comparator connects the PWM module input, PWM module output connects LED lamp input, LED lamp output connects the output of MCU microprocessor, the input termination power of MCU microprocessor.Further, be connected a thermistor R2 between the input of described MCU microprocessor and the ground output.
Further, between described thermistor R2 and the MCU microprocessor ground output resistance R 3 is set also.
Operation principle of the present utility model is as follows: through the transformer transformation, and through outputing to LED lamp group after through the modulation /demodulation of PWM module after the over-voltage comparator, the output of LED lamp group connects the MCU microprocessor after the supply voltage input.Temperature sensor thermistor R2 is with the temperature change in resistance, obtain the signal of telecommunication that reaction temperature changes by the voltage that gathers thermistor R2 two ends, behind the signal of telecommunication input MCU microcontroller, through the negative pole end of modulation /demodulation output voltage to the LED light-emitting diode, the poor reduction of LED light-emitting diode both end voltage, the heating of LED light-emitting diode reduces, so that the LED electricity-saving lamp reaches heat balance at a lower temperature, save electric energy, prolonged useful life simultaneously.
The content of mentioning in above-described embodiment is not to be to restriction of the present utility model, and under the prerequisite that does not break away from utility model design of the present utility model, any apparent replacement is all within protection range of the present utility model.
Claims (2)
1.LED energy-conservation reduction voltage circuit is characterized in that: the energy-conservation reduction voltage circuit of described LED comprises interconnective power supply, transformer, voltage comparator, PWM module, LED lamp and MCU microcontroller successively; The input of the output connection transformer of power circuit, the output of transformer connects the input of voltage comparator, the output of voltage comparator connects the PWM module input, PWM module output connects LED lamp input, LED lamp output connects the output of MCU microprocessor, the input termination power of MCU microprocessor; Be connected a thermistor R2 between the input of described MCU microprocessor and the ground output.
2. the energy-conservation reduction voltage circuit of LED according to claim 1 is characterized in that: between described thermistor R2 and the MCU microprocessor ground output resistance R 3 is set also.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201220228814.7U CN202713680U (en) | 2012-05-21 | 2012-05-21 | LED energy-saving and step-down circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201220228814.7U CN202713680U (en) | 2012-05-21 | 2012-05-21 | LED energy-saving and step-down circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202713680U true CN202713680U (en) | 2013-01-30 |
Family
ID=47593932
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201220228814.7U Expired - Fee Related CN202713680U (en) | 2012-05-21 | 2012-05-21 | LED energy-saving and step-down circuit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202713680U (en) |
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2012
- 2012-05-21 CN CN201220228814.7U patent/CN202713680U/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 | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130130 Termination date: 20130521 |