What's the reason why LED lamp explosion?
The LED is a semiconductor products, semiconductor components how to fry, you first take a look at what is inside shoot the light structure, what of? LED lamp is the low voltage dc power supply, so there is a 220 v low voltage transformer, rectifier, regulator, etc, so easy to explosive components only capacitance. Light not bright, then is a problem with my line, not LED lights out of the question, you think about it, four straight LED lamp is not bright, it happens only line out of the question. 1. You check the dc voltage in a circuit is big (a big will burn out the LED voltage); Check if there is no failure to press 2 points; 2. Did you check the rectifier voltage regulator internal burned components (including capacitor); To eliminate the transformer in the 【 some lamps and lanterns, to step down with other components, if one element is broken (short circuit), it is possible to high-pressure came in." 3. You're not short circuit has been measured using a multimeter, you is which part of the test? You didn't speak clearly. Dc voltage test have no? How many volts? 4. There is another reason is that the power supply voltage stability where you live? Have 220 v voltage fluctuations, especially at night, usually higher voltage (more than 220 v), if the voltage rises to more than your pressure limit of lamps and lanterns, lamps and lanterns will burn out. 5. Etc.
Do as you say, the estimate is the high voltage lines, besides have tenants around your community, there are no factories, such as private processing plants, workshops, etc. And in blasting bulb at the same time, you have to use multimeter overvoltage. Probably more than 220 v. Your amount of voltage in the night. Light through the high pressure will explode, but each bulb pressure is different, it is easier for some low pressure blasting, high pressure and explosive.
Estimation is constant current source circuit board exploded with the electrolytic capacitors in other not to fry of the original, if the design is not reasonable integration of internal temperature of the LED bulbs can be higher than the limit of capacitance under temperature will be Fried, in short or use due to the bad quality products.
245 v ac voltage is on the high side, also belong to the basic normal, because of your table may not be accurate! "Hall below screw energy-saving lamps also blew up two", can basic assertion: is caused by the zero line hung up! If you exclude a steal, cause abnormal zero short is the zero line of the power supply system itself there is something wrong with the connection (loose contact point)!
I come to the conclusion: your power supply voltage abnormal! Possible reasons: with your power supply system of a steal, (often at night, more time is that a) steal operation make the zero line suddenly dangling leads to voltage surge, relatively high voltage regular bulbs, not necessarily immediately, overflowing LED lamps and lanterns is very sensitive to voltage, slightly on the high side is easy to burn off one of the components (often capacitor). search Suggestion: immediately report power supply company, one night about the same time to check the meter box line condition!
