There is a saying that one point is worth the price! It happens that there are two kinds of LED bulbs of different specifications and prices: one is a 3W6.8 yuan on a treasure, one is 7W30 yuan, the weight is obviously 7W is much heavier, then what are their internal work? What is different? Let's share it with everyone.
On the left is a black courier 7W30 yuan, the right is a 3W bulb, 6.8. I have a handful of it, which is obviously more expensive.
The 3 watts were disassembled and the base plate had only one screw and it was not tightened yet. Not to mention the thermal paste, not at all.
Rectifier board, I began to see this does not want to block the buck, thought it was just fine, now look, it is. The chip capacitor is soldered, just an electrolytic capacitor, no chip. Disappointed.
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