CN201616936U - A dimming LED lamp circuit - Google Patents
A dimming LED lamp circuit Download PDFInfo
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- CN201616936U CN201616936U CN2009202866785U CN200920286678U CN201616936U CN 201616936 U CN201616936 U CN 201616936U CN 2009202866785 U CN2009202866785 U CN 2009202866785U CN 200920286678 U CN200920286678 U CN 200920286678U CN 201616936 U CN201616936 U CN 201616936U
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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
本实用新型提供一种调光LED灯电路，包括发光二极管和电源，还包括PWM斩波发生器和分压电阻选择模块，该分压电阻选择模块连接所述电源且输出连接所述PWM斩波发生器的输入，通过所述分压电阻选择模块选择所述PWM斩波发生器输出的不同频率和脉宽的PWM波，驱动所述发光二极管发光，调节所述发光二极管亮度。本实用新型采用高频斩波电路来对LED灯具进行调光，好处是既不会因为导通角的改变而对电路的污染，也不会因为减少发光体造成发光的不均匀，另外利用PWM斩波还可以使LED发光均匀的同时改变光照强度，又不改变原有灯具的色温与显色指数，同时具备节能的优点。
The utility model provides a dimming LED lamp circuit, which includes a light-emitting diode and a power supply, and also includes a PWM chopper generator and a voltage dividing resistor selection module. The voltage dividing resistor selection module is connected to the power supply and its output is connected to the PWM chopper. The input of the generator is to select PWM waves of different frequencies and pulse widths output by the PWM chopper generator through the voltage dividing resistor selection module to drive the light emitting diode to emit light and adjust the brightness of the light emitting diode. The utility model adopts a high-frequency chopping circuit to adjust the light of the LED lamps. The advantage is that the circuit will not be polluted due to the change of the conduction angle, and the unevenness of the light emission will not be caused by the reduction of the illuminant. In addition, the PWM Chopping can also make the LED emit light uniformly while changing the light intensity without changing the color temperature and color rendering index of the original lamps, and has the advantage of energy saving.
Description
技术领域technical field
本实用新型属于灯具技术领域，尤其涉及一种调光LED灯电路。The utility model belongs to the technical field of lamps, in particular to a dimming LED lamp circuit.
背景技术Background technique
目前高亮度发光二极管LED正在全球蓬勃发展，以高光效，冷光源，环保节能等优点日益成为新一代照明光源的主流，给世界照明领域带来一场巨大的变革。与其他灯具相比，LED灯优势是调光，在不需要高亮度照明时，可采用调低亮度的方法来节能。但是到今天为止，由于思路的限制，LED依旧没有发挥出调光性能上的优势。At present, high-brightness light-emitting diodes (LEDs) are booming all over the world. With the advantages of high luminous efficiency, cold light source, environmental protection and energy saving, they have increasingly become the mainstream of the new generation of lighting sources, bringing a huge change to the world's lighting field. Compared with other lamps, the advantage of LED lamps is dimming. When high-brightness lighting is not needed, the method of lowering the brightness can be used to save energy. But until today, due to the limitation of thinking, LED still has not exerted the advantages of dimming performance.
实用新型内容Utility model content
本实用新型的目的是提供一种调光LED灯电路。The purpose of the utility model is to provide a dimming LED lamp circuit.
本实用新型的技术方案是，一种调光LED灯电路，包括发光二极管和电源，还包括PWM斩波发生器和分压电阻选择模块，该分压电阻选择模块连接所述电源且输出连接所述PWM斩波发生器的输入，通过所述分压电阻选择模块选择所述PWM斩波发生器输出的不同频率和脉宽的PWM波，驱动所述发光二极管发光，调节所述发光二极管亮度。The technical scheme of the utility model is that a dimming LED lamp circuit includes a light-emitting diode and a power supply, and also includes a PWM chopper generator and a voltage dividing resistor selection module. The voltage dividing resistor selection module is connected to the power supply and the output is connected to the The input of the PWM chopping generator, the PWM waves of different frequencies and pulse widths output by the PWM chopping generator are selected through the voltage dividing resistor selection module to drive the light-emitting diodes to emit light and adjust the brightness of the light-emitting diodes.
本实用新型的LED灯具电路的调光不同于其他灯具的调光，既不是改变电压导通角，也不是简单的减少几个发光体来调光，而是采用高频斩波电路来对LED灯具进行调光，好处是既不会因为导通角的改变而对电路的污染，也不会因为减少发光体造成发光的不均匀，另外利用PWM斩波还可以使LED发光均匀的同时改变光照强度，又不改变原有灯具的色温与显色指数，同时具备节能的优点。而普通荧光灯由于是气体放电发光，一旦灯管两端电压低于气体导通电压，荧光灯就会自动熄灭，因此无法做成调光灯，在不需要高亮度的时候浪费大量能源。The dimming of the LED lamp circuit of the utility model is different from the dimming of other lamps. It neither changes the voltage conduction angle nor simply reduces a few light-emitting bodies to adjust the light, but uses a high-frequency chopping circuit to adjust the LED The advantage of dimming the lamp is that it will not pollute the circuit due to the change of the conduction angle, nor will it cause uneven light emission due to the reduction of the illuminant. In addition, the use of PWM chopping can also make the LED emit light uniformly and change the light at the same time. Intensity, without changing the color temperature and color rendering index of the original lamps, and has the advantage of energy saving. However, ordinary fluorescent lamps emit light due to gas discharge. Once the voltage at both ends of the lamp tube is lower than the gas conduction voltage, the fluorescent lamp will automatically go out. Therefore, it cannot be made into a dimmable lamp, and a lot of energy is wasted when high brightness is not needed.
附图说明Description of drawings
图1本实用新型提供的电路示意图The schematic circuit diagram that Fig. 1 utility model provides
具体实施方式Detailed ways
如图1所示，一种调光LED灯电路，包括发光二极管和电源，还包括PWM斩波发生器和分压电阻选择模块，该分压电阻选择模块连接所述电源且输出连接所述PWM斩波发生器的输入，通过所述分压电阻选择模块选择所述PWM斩波发生器输出的不同频率和脉宽的PWM波，驱动所述发光二极管发光，调节所述发光二极管亮度。As shown in Figure 1, a dimming LED lamp circuit includes a light-emitting diode and a power supply, and also includes a PWM chopper generator and a voltage dividing resistor selection module, the voltage dividing resistor selection module is connected to the power supply and the output is connected to the PWM The input of the chopper generator selects PWM waves of different frequencies and pulse widths output by the PWM chopper generator through the voltage dividing resistor selection module to drive the light-emitting diode to emit light and adjust the brightness of the light-emitting diode.
PWM斩波发生器可以采用555时基电路，分压电阻选择模块可以采用MOS管加电阻和开关设定的方法实现。例如采用2串每串15颗1W LED灯珠，每串都另加一支MOS管可根据室内的采光要求进行调光，分为4档照明；打开开关为最高亮度照明，对应的4档，75％照明对应3，50％照明对应2，25％照明对应1。当PT-1，PT-2，PT-3均断开，为第4档照明；当PT-1闭合，PT-2，PT-3断开，为第3档照明；当PT-2闭合，PT-1，PT-3断开，为第2档照明；当PT-3闭合，PT-1，PT-2断开，为第1档照明。The PWM chopper generator can use a 555 time base circuit, and the voltage divider resistor selection module can be realized by adding resistors to MOS tubes and setting switches. For example, 2 strings of 15 1W LED lamp beads are used in each string, and each string is added with a MOS tube to adjust the light according to the indoor lighting requirements, divided into 4 levels of lighting; turn on the switch for the highest brightness lighting, corresponding to 4 levels, 75% lighting corresponds to 3, 50% lighting corresponds to 2, and 25% lighting corresponds to 1. When PT-1, PT-2, PT-3 are all disconnected, it is the 4th gear lighting; when PT-1 is closed, PT-2, PT-3 is disconnected, it is the 3rd gear lighting; when PT-2 is closed, When PT-1 and PT-3 are disconnected, it is the second gear lighting; when PT-3 is closed, PT-1 and PT-2 are disconnected, it is the first gear lighting.
需要高亮度照明时可以将灯具调至最高档，在平时不需要高亮度照明时可以根据需要将其调至相应档，可做到真正的节能。When high-brightness lighting is needed, the lamp can be adjusted to the highest level, and when high-brightness lighting is not required, it can be adjusted to the corresponding level according to needs, which can achieve real energy saving.
调光采用PWM斩波，以保证灯光被调整后不至于不均匀，和色温的变化。The dimming adopts PWM chopping to ensure that the adjusted light will not be uneven and the color temperature will not change.
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Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009202866785U CN201616936U (en) | 2009-12-29 | 2009-12-29 | A dimming LED lamp circuit |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009202866785U CN201616936U (en) | 2009-12-29 | 2009-12-29 | A dimming LED lamp circuit |
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| CN201616936U true CN201616936U (en) | 2010-10-27 |
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| CN2009202866785U Expired - Fee Related CN201616936U (en) | 2009-12-29 | 2009-12-29 | A dimming LED lamp circuit |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111954341A (en) * | 2020-09-03 | 2020-11-17 | 广州彩熠灯光股份有限公司 | Dual-frequency control device and method, LED stage lighting |
| WO2021175024A1 (en) * | 2020-03-05 | 2021-09-10 | 深圳市晟碟半导体有限公司 | Led dimming circuit and device, and dimming method |
| CN116133187A (en) * | 2022-12-16 | 2023-05-16 | 珠海市圣昌电子有限公司 | A method for realizing optional dimming PWM pulse frequency of LED dimming power supply |
-
2009
- 2009-12-29 CN CN2009202866785U patent/CN201616936U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2021175024A1 (en) * | 2020-03-05 | 2021-09-10 | 深圳市晟碟半导体有限公司 | Led dimming circuit and device, and dimming method |
| CN111954341A (en) * | 2020-09-03 | 2020-11-17 | 广州彩熠灯光股份有限公司 | Dual-frequency control device and method, LED stage lighting |
| CN111954341B (en) * | 2020-09-03 | 2022-12-09 | 广州彩熠灯光股份有限公司 | Dual-frequency control device and method, LED stage lighting |
| CN116133187A (en) * | 2022-12-16 | 2023-05-16 | 珠海市圣昌电子有限公司 | A method for realizing optional dimming PWM pulse frequency of LED dimming power supply |
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| Date | Code | Title | Description |
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| 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: 20101027 Termination date: 20121229 |