What Is Dimmable Led?

1. What is dimmable led

Dimming is standard in high-end smart home systems. LEDs are known for their low energy consumption and high brightness. The brightness and energy consumption are more than 60% different from those of traditional tungsten bulbs.

The production of dimmable light means that the brightness of the light can be adjusted according to customer requirements, so as to affect the indoor light and shade, bring out different indoor environmental atmospheres, and save energy and reduce carbon emissions.

LED dimming means that the brightness, color temperature and even color of LED lamps can be adjusted. Only lamps that can be dimmed can slowly turn on and turn off. Different scenarios provide different brightness and different color temperatures. And the light switching can be smoothly transitioned.

Therefore, high-end smart home systems come standard with dimmable lighting systems.

Incandescent lamps and metal halide lamps are widely used in the field of dimming, but with the continuous promotion of energy saving and emission reduction, LED dimming has begun to show a development trend after overcoming the technical obstacles of dimming.

LED dimmable light, LED infrared smart light tube, LED sound and light control, etc. are collectively referred to as LED intelligent series. In today’s increasingly fierce price competition of LED ordinary lamps, LED intelligence has become the development direction of large LED lighting companies.

2. Classification of dimmable LEDs

According to the use environment and technical classification, LED dimmable light is mainly divided into three types: LED dimmable spotlight, LED dimmable bulb light and LED par light.

Among them, the power of the dimmable spotlight is 3W and 4W, the power of the dimmable bulb is 3W and 5W, and the power of the dimmable par light is 7W, which can meet the illumination requirements of different occasions.

For some individual LED lamps, light strips, etc., which do not have dimming components, they can still be dimmed in theory.

From a basic principle point of view, there are three dimming methods of LED, namely linear dimming, PWM dimming and thyristor dimming.

Among them, linear dimming has been gradually eliminated due to its low efficiency and poor dimming effect.

The thyristor dimming can be applied to ordinary incandescent lamps and LED lamps, so it can be directly replaced, but its dimming effect on LED lamps is not ideal, so there are few applications.

The most widely used and the best dimming performance is PWM dimming.

Color temperature adjustment and color adjustment are essentially the individual brightness adjustment of multiple LEDs.

For example, the color temperature adjustment is through two-way dimming, one is a white LED, the other is a warm yellow LED, and the brightness of the two LEDs is different to create different color temperatures.

Of course, these LEDs are made together, the color temperature light strip, you can see the white LED and the warm yellow LED in it.

The color is the different brightness matching of RGB three-color LED or RGBW four-color LED, which is essentially the brightness adjustment of three-way or four-way LED.

There are three commonly used ways for the dimming module to be connected to the smart home system:

(1) The communication module is directly integrated with the dimming drive module, that is, the dimming module and the intelligent control module are made together, and the control is directly realized by means of wifi or ZigBee. The intelligent dimmable lamps essentially belong to this category.

(2) 0-10V, the dimming driver receives the 0-10V analog control signal to control the brightness of the lamp. If you want to connect in this way, you need to add an intermediate component to realize the mutual transfer between network communication and 0-10V signal.

(3) DALI, pure digital dimming, each lamp has an address, and the precise control of each lamp is realized by means of pure digital control bus, etc., with high cost and good performance, mainly used for wired control.

Of course, there are some other access methods, which are relatively small, so I won’t talk about them here.

At present, for the smart home access of dimmable lamps, in addition to the intelligent dimmable lamps that can be directly connected, it mainly relies on the dimmable module integrated with the intelligent control module, which is the first and 0-10V access module, which is the second type mentioned above.

The dimming system recently launched by Aqara is actually the above-mentioned components.

For example, the integrated intelligent dimmable driver can be directly connected to common LED downlights, spotlights, light strips, etc.

The ZigBee to 0-10V module can be connected to various 0-10V dimming drivers, greatly improving the optional range of dimmable lamps.

3. Advantages of dimmable LEDs

The advantages of LED dimmable are:

(1) Super energy-saving, 4W spotlights can replace 35W metal halide lamps, and the energy saving rate is as high as 90%.

(2) Ultra-long life, 30,000 hours of ultra-long life, more than 8 times higher than metal halide lamps.

(3) High safety factor and ultra-low calorific value, which can effectively protect the circuit and reduce potential safety hazards.

4. Application of dimmable LED

As countries officially begin to ban incandescent lamps, and the Chinese government has also vigorously supported LED lighting, the LED lighting application market has ushered in huge opportunities for development.

LED dimmable has higher energy-saving efficiency and a wider range of applications.

(1) The lighting of hotels and guesthouses uses LED dimming products, either in the lobby or in the guest rooms, to bring a different feeling to customers. In addition to saving energy, it can also show luxury and warmth.

For the owner, the personalized light environment created by LED can fully demonstrate the strength of the enterprise.

(2) Coffee shops and bars are places of leisure and entertainment for people after a busy day of work, where people can think about problems quietly.

Therefore, the lighting effect and the brightness of the light are extremely important, and LED dimmable spotlights and LED dimmable par lights are widely used.

(3) Home decoration. LED dimmable lights are installed in the hall to meet the different light requirements of the owner.