According to the national semiconductor lighting engineering and industrial union survey, in 2010, LED lighting lamps and lanterns in the main in the class of lamps are application, including LED shoot the light, tongdeng, ball steep light, straight GuanDeng, plane light, street light, tunnel light etc, which is the largest number of alternative incandescent light bulb and energy-saving lamps ball steep light, accounted for 41%; Next is the shoot the lamp and canister light, to 28% and 12% respectively.From the results of the preliminary statistics to see, the structure of products in 2011 compared with 2010 change, LED the proportion of ball steep light further boosted by 46%, shoot the light, canister light the share of decrease, the proportion of direct GuanDeng have bigger promotion,
In LED from the corresponding to the permeability of market of lamps to see, street lamp and the tunnel light penetration is obviously higher than indoor lighting to LED lamps and lanterns, 5% or so, and indoor lighting lamps and lanterns is not LED by more than 1%.

Two kinds of constant current control mode determines the use of two different types of devices, one to determine the two devices use different circuit, different performance, cost is also different. The 9910 series, represented by constant-current control IC to do LED tube lighting power, but the actual limit, control is relatively simple, strictly speaking, it does not belong to the mainstream switch mode power supply control, switch mode power supply control is certainly the mainstream have benchmarks and operational amplifier. However, this IC can only be used for LED is difficult to come out for other things, just because the LED on the requirements of very low ripple. But because it is only higher prices for LED so now. 9910 plus is the use of basic MOS pipe production, the output without electrolysis, in general I see a lot of people do is labor power conversion word inductance inductance. This power, the general information on the chip manufacturers have a map, are basically buck. I do not say, good at this much more than me.