The reason why LED power supply is often damaged, many people buy LED power when purchasing lamps, we also know that LED power supply is more environmentally friendly and durable than other things. But sometimes there are bad questions, what should I do when this happens? Zhongfu photoelectric plant lamp power supply complains to everyone:

Learn why the LED power supply is often damaged

1. There are many cases where electrolytic capacitors are broken down without protection. In addition, when selecting the voltage resistance and power consumption of components, please try to leave room for it, such as the withstand voltage of electrolytic capacitors. Although the rated voltage is only 220Vx1.4=308V at 220V, my piece The electrolytic capacitor withstand voltage on the power board is 400V, which should be enough, but we usually use 450V withstand voltage electrolytic capacitor, so the insurance factor can be larger.

2. We know that the cost of four diodes is much lower than that of an integrated rectifier bridge. There are many companies that can produce diodes, because the production of diodes can be done with some of the simplest semiconductor production equipment that has been eliminated in the past. And that company that can produce integrated rectifier bridges is not much, because it must have high-quality integrated circuit production equipment and raw materials, which can be produced by some big manufacturers, and its price is certainly much more expensive than the four diodes.

3. The LED power supply is not equipped with any protection device. However, as a power source connected to the mains, it is necessary to add protective components. That is because there are various surge voltages on the power grid. It may be a lightning strike at a long distance or a high-power device on the power grid. High voltage pulses caused by switching. If you do not protect this high voltage pulse, it is easy to break through the electrolytic capacitor.

The reason why LED power supply is often damaged, now everyone knows about the causes of LED power failure often! If you want to know more about the LED power supply, please continue to pay attention to the content update or call us, Zhongfu is happy to answer your questions.