Do LED street lights make a noise?

I notice that many street lights will make a noise while working. Is it a common feature of street lights? Will LED street lights also make this noise?

No, LED street lights don’t make a noise because their principle to emit light is different from that of traditional street lights. Traditional street lights make a noise because they need a high voltage to stimulate the inert gas to generate light. The way to provide high voltage is through the ballast, and the ballast will make a noise while working. LED street lights apply a totally different method to produce light, which is the recombination of free electrons and electron holes.

More reading: What Is LED Street Light?

What Others Are Asking

Are LED street lights better?

The application of LED street lights is supported by so many countries. Are them really better than the traditional street lights? Why?

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