LED street light anti-surge lightning protection design

LED street lights are installed outdoors and are easily damaged by lightning strikes or surge voltages, so lightning protection units need to be designed. The lightning protection of the street lamp is divided into two levels. The first stage is to protect the direct lightning strike

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Noise is annoying, and the noise of the refrigerator comes.

Silent refrigerator products have always been the focus of users, and will also reduce the user's noise. However, some friends will say that the refrigerator suddenly has noise after long-term use of the refrigerator, but I don't know why. The editor below will introduce you to some troubles

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Clever wife loves eight kitchen classic cabinet case

In the days of May, there is a romantic atmosphere everywhere. The small space of the kitchen is no exception. In a pure kitchen, cooking can be a romantic pleasure. Today, Xiaobian introduces 8 white cabinets to create a fresh and stylish kitchen. Let this delicious place produce a love. Maximum

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