I do the switching power supply, the original did the adapter, charger, steel switching power supply. Later to do the led 1w , initially do 1W, 3W high power LED driver, but then do less. The reason is simple, there is no market. I found that the high-power LED constant current power supply, as long as its power exceeding 5W, basically there is no market, can only be proofing. Because the LED is too expensive. This, too, the power to peer friends mind you, this is my rule of thumb. I do not know how many people slip in high-power LED, high power LED thunder and rain, the victims of many who have lost their money in this one. Low-power LED market a bit better. But does not work, low-power LED driver is resistive and capacitive step-down power accounted for most of the country. Shaped constant-current switching power supply-driven low-power LED, nice, a lot of people can not accept its cost. Out a constant current led power 50w , switching power supply, efficiency of 0.9, stability, reliability, constant accuracy is very good, the price was five dollars, many people Xiangui, because they take it and a dollar RC buck power to compare, of course, the two fundamental immeasurably. Switching power supply inside, I do have an integrated MOS switching power supply chip, there is a transformer. Both the cost is put there, of course, performance is also placed there. However, I believe, the ultimate low-power LED constant current drive will RC buck power is eliminated. Because consumers will slowly become more rational, a resistive and capacitive step-down power lamps made out of almost no practical value only when furnishings and toys, if the LED is really into the field of general illumination, RC drop pressure power simply can not do the job. I can not expect the future will be, with the improvement of led 10w performance, lower prices, power costs will become a very important part of the cost of LED lamps. Real lamps, RC Buck did not do the job. RC Buck popular power, is only a transitional eventually constant current power supply authentic.
I am still optimistic about the low-power LED lamps. Low-power LED lights, the light fades too much, the price is less than ideal. But now for general illumination than high-power advantage. I think that the low-power LED lamps for general lighting field, and energy-saving lamps, a high within five years. High Power LED general lighting, it is certainly outside the five-year. So now I focus on R & D and production of small power LED. I noticed that the low-power LEDs used in general lighting lamps LED lamp, LED honeycomb lamps, led power 10w fluorescent. LED fluorescent lamp, starting from the second half of 2007, many people began to research and development, we can say that the hot incredible. Basically now I ten eight are doing this, so I started doing the power of the LED fluorescent do for some time, so that the general in this R & D and production of power methods and principles. Personal experience to it.
On the shape
High Power LED 50W do the lights manufacturers the universal demand on the lamp, such as put T8 lamps. A small part of an external. Do not know why must be so. In fact, the built-in power supply is difficult, the performance is not good. But I do not know why so many people make such a request. Might Sui Fengdao it. An external power supply should be more scientific, more convenient fishes. But I also had to Suifeng Dao, what customers want, what I do. But do built-in power supply, considerable difficulty Oh. Because the power of the external shape of the basic requirements, want to do much do much want to be made of what shape it does not matter. Built-in power supply, can only be made of two kinds, one is the most widely used, that is placed below the light board, on top of a light board, the following is the power supply, which requires the power to do the very thin, or does not fit. And this can only components fell, power lines, only longer. I consider this not a good idea. However, we generally like to engage. I'll engage. There is less and put both ends, that is, on the tube two, so do the costs are also lower. I have done, basically the two built-in shape.