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Question:

LED lights it is transistor luminescence is not pure resistance filament bulbs, when dimming voltage changing, the frequency is changing so affect rectifier, sudden high voltage will burn out the LED.

LED lights it is transistor luminescence is not pure resistance filament bulbs, when dimming voltage changing, the frequency is changing so affect rectifier, sudden high voltage will burn out the LED.

Answer:

LED lights, sort is more, the most common of which are blue chip and yellow phosphor, this kind of light blue light is too much, cannot be used for reading. Advanced LED lights (red, green and blue), color rendering index are also more than 80, of around 4000 k. However, it is expensive.
Energy-saving lamps, color rendering index above 80, it has a variety of color temperature. Read a book, I suggest to use 4000 k; High color temperature advantageous to concentrate, but Dazzling; Low colour temperature of concentrate. When reading a book, lamp writes a 1.5 meters, 300-350 lux. So-called energy-saving lamps, is high frequency, otherwise, it is not energy-saving lamps.
Who recommended the first floor of the answer, he was mistaken about the basic knowledge, also recommended? Three kinds of lamp, incandescent lamp the best color, color rendering index of 99 above, by contrast, it is best for your eyes, but the color temperature is too low, only 2850 k, easy to disperse. Again, it can charge.

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