With the development of LED and the international trend of energy saving and emission reduction, LED lamps and light sources have entered the civilian market on a large scale. As the most common incandescent lamp in civilian light sources, Europe has banned the production and sales of incandescent lamps in 2012. The Americas also banned the production and sales of incandescent lamps of 40W and above in 2014. China has banned it in October 2012. The production and sales of incandescent lamps of 100W or more will also prohibit the production and sale of incandescent lamps of 60W and above on October 1, 2014. The production and sales of incandescent lamps of 15W and above will be banned on October 1, 2016.
Under this general trend, as a direct replacement light source for incandescent lamps, the amount of LED bulbs will be greatly improved. Its quality will also be uneven. As an indispensable driving power source inside the LED bulb, its quality largely determines the safety and quality of a bulb.
The drive power is basically divided into two categories: non-isolated drive and isolated drive:
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