Comparison of four price LED bulb dismantling

Digital home news, some time ago to engage in online activities a few shops, the purchase of several LED energy-saving lamps, are a small number of watts, all hands, of course, to play the spirit of the demolition of friends, no demolition is not happy! One by one through the comparison of the quality of each lamp work quality.

The first one: headlights 9 watts, 7.5 yuan / only, a small lamp of 3 watts, only $2

Global illumination

The mask is removed, the outer layer of the mask is smooth, and the inner layer is frosted

The front headlight circuit board: 14 LED lamp, MB1OS bridge rectifier and two resistance 474

Two capacitors, all the parts!

Here is the light

The front 5 LED lamp, the other with the headlight

Look at the slag welder

Look at the arrow, because the small lamp power is small, the rear side of the headlight more than a resistor, directly as a power cord, and is enough to make full use of resources!

Next dismantling second: 5 watts, the price of 5.2 yuan

Global illumination

Positive: a total of 24 LED lights, one in series.

On the back, the six substrates are aluminum, except for the middle

Front panel: four 4007 diodes, two capacitors, and three resistors

Back

Next is the third, 5 watts, the price of $5 (this is more difficult to tear down, businesses with a lot of glue)

Whole

24 LED lamp beads, which are connected in series

The back is all aluminum plate lamp, easy to heat fan

Front panel: four SMD diodes, three resistors

The back is also two capacitors

Next is fourth: 3 watts, the price of 7 yuan

The same is a corn light, but more than the first two glass, with a knife

Remove the glass cover, look good, the glass can be separated from the dust

The six board is aluminum plate, each plate 4 beads, a total of 24

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