Violent dismantling: this T8 lamp value 20?

Now the LED price war has sold four, product quality is uneven, the fluorescent tube of a 1.2M to a few hundred yuan from ten yuan, but is nearly ten times the price of similar appearance. What is the difference between them? How can consumers judge the difference in quality? Low price can really do good quality? There is a balance between price and quality?

Today, fortunately, with a senior engineer engaged in the LED industry for fifteen years, Mr. Li (hereinafter referred to as Lee workers) a random evaluation of the dismantling of the credibility of a good LED factory in Shenzhen T8 fluorescent lamp. This is a market of all plastic tube, the appearance and the market is the same as the general plastic tube, we use the integral ball to test its photoelectric parameters:

The parameters are as follows: Power: 17.3W; PF:0.52; luminous flux: 1711.2LM; light efficiency: 98.92LM/W; color rendering index: 73.5; color temperature: 6516K.

In addition to the low value of some of the other parameters are good PF medium light effect, look at the material used. "According to its data, Li Gong.

The lamp holder is a button type, which is convenient for assembly and maintenance, and can be opened easily without any tools. The lamp has a (commonly known as: aluminum plastic aluminum industry), so you can well solve the problem of heat dissipation of LED, can effectively delay the decay, prolong the service life of the lamp tube effect. Circuit board with aluminum substrate on the overall structure of good heat dissipation.

Li Gong took a careful look at the circuit board said, this should be 1016 GB substrate, good material. On line before and after a failure will not affect the other lamp. "

The T8 lamp with 96 star 2835 0.2W beads, beads for further detection quality, Li Gong took the magnets on the lamp, lamp further testing material, but does not reflect the lamp. Take the lamp down iron scissors scratch bottom plating layer with a pair of tweezers in the colloidal beads put out under the electron microscope observation for a while and said: "obviously the copper bracket, pure gold, the chip size is not less than the visual 10*20 lamp is really good. "

Another lamp core: Power

According to the comparison of a variety of brand power, and Li workers according to the test data to determine the basic protection functions of this power are: over temperature, over voltage, open circuit, short circuit. And confirmed the decision of the lamp life is the use of domestic Keyser GATHER 105 degrees 5000 hours, 4000V power supply.

As a whole, this material is more moderate, we do the following test, the depth of its real life assessment:

According to our relationship with the capacitor temperature and lifetime test (if the capacitance of the working temperature based on 105 degree drop ten degrees to life doubled) is also its working temperature is 95 degrees and there were ten thousand hours, fifteen thousand hours at 85 degrees, 75 degrees at twenty thousand hours, 65 degrees is twenty-five thousand hour. When the ambient temperature is twenty degrees, the operating temperature is below 65 degrees, when the ambient temperature is increased to a temperature of 41 degrees, the temperature is about 68 degrees. That is to say, according to three hundred and sixty-five days a year, every day for about 16 hours, the theoretical life is about four and a half years.

Li Gong according to its material and test results of this product summary:

Disadvantages: general shape, low PF value, single voltage (170-265V) can not pass EMC and safety regulations;

Advantages: a circuit board and a power supply and a bulb of the three core content is, stable product quality, high light efficiency, light uniformity, no stroboscopic without harm to the eyes (2.5) two years of normal use of light should be lower than less than 15%.

Li Gong according to the market about estimate cost: Housing 6 yuan, PCB2.2 yuan, 98*0.08=7.84 yuan power lamp 2.5 yuan, 3 yuan, 1.8 yuan of labor costs, packaging, and loss of rent utilities and management costs, the total cost should be around 25 yuan, plus 20% profit and market price before the widespread use of LED when battle of the environment, the market price of this lamp should be around 28 yuan.

So what is the ex factory price of these 8 lamps? As the LED industry, can you go with us to determine and uncover the mystery? The following 4 prices for you to choose, you guess which is the real price?

A.18.8 element

B.21.8 element

C.23.8 element

D.26.8 element

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