LED lighting market potential analysis

Today, LED lighting has surely become a mainstream technology. The technology is becoming more mature, one of the symbols is the large number of LED lighting standards and norms have been put forward. Stringent efficiency requirements already exist for quite some time and will continue rising. But Recently, LED lighting designer's work is more difficult, because to meet two requirements: both use dimmers for incandescent dimming control to achieve, but also to achieve high power factor performance for LED brightness adjustment, currently divided into analog dimming and PWM dimming, the following will be LED dimming of the relevant circumstances described. With the LED application market continues rapid growth, the continued expansion of the scope of application has led to the continuous improvement of product requirements, the LED terminal products in the LED brightness adjustment on this feature also appears to be very necessary. Also present, such as LED lamps and displays, etc. must focus on the link.
Dimming lighting systems are very common features. For the incandescent lamp, it can be easily achieved at low cost. LED lights dimming, but there are some difficulties, but for architects and residential users, the transition to LED lighting, dimming may not want to lose control should have advantages. This involves many types of LED lighting knowledge.
Power factor is a very important factor, because of the high power factor can reduce the loss of distribution network. Reduce electricity use on the environment impact of the most effective way to reduce waste, the regulatory agencies around the world are further efforts to strictly regulate their power factor. One example is the solid-state lighting Energy Star energy efficiency standards (09/12/07), which provides residential lighting products, power factor (PF) should be greater than 0.7, the commercial lighting products, power factor (PF) should be greater than 0.9.
LED lamps dimming most common, there are three, three dimming RGB LED light current skills are based on the change of the input dimming. According to different circuit system can be divided into imitation dimming and PWM dimming.
The first: This dimming method is by modulating the LED drive current to complete the LED lights dimming, the brightness of the LED chip and the LED drive current into a certain proportion of stakeholders, so we can adjust the LED drive current control LED lights light and dark.
The second: This dimming method is called pulse width modulation (PWM). The method is to adjust the drive current was through the square wave, the variable pulse width, pulse width modulation through the change of the modulated LED light continuously lit for the time, also change the input power to reach the energy saving, dimming goals. Frequency as usual at about 200Hz ~ 10KHz; because the human eye visual lag, do not feel in the dimming light generated in the process of shining phenomenon. This method has the advantage of dimming LED cooling can improve performance, defect-driven current overshoot the life of the LED chip must have some impact on China's lighting of the town of "Yuyao region rely on the local industrial advantages lighting company, fully leveraging" energy saving "www.jiek025.com characteristics, product design and development played the" Energy "brand, continued application of new energy saving technologies to develop products to meet market demand, according to statistics, the first export of energy-saving lamps, Yuyao April 2230 batch , the value of $ 50,060,000, up respectively 32.5% and 18.4%, ....
Third: This method is called to imitate dimming dimming dimming method or linear method. The kind of dimming method has the advantage: when the drive current linear growth or decreases, reducing the drive current overshoot during the life of the LED chip, and the dimming circuit of strong anti-nuisance. The flaw is the size of the drive current process of change is certainly the color temperature of LED chips have a certain impact.