Three major reasons for LED power supply damage

The three main reasons for the damage of the LED power supply, we know that the LED power supply will be damaged frequently, what should I do when this happens? Fengsen Technology Power tells everyone:

1. There are many times when electrolytic capacitors are broken down without protection. In addition, when selecting the voltage resistance, power consumption and other indicators of components, it is also necessary to leave room for it, such as the withstand voltage of electrolytic capacitors. Although the rated voltage is only 220Vx1.4=308V at the rated 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. There are not many companies producing integrated rectifier bridges, because they must have high-quality integrated circuit production equipment and raw materials, which can be produced by some large manufacturers, and the 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 three major reasons for LED power supply damage, now everyone knows about the causes of LED power supply often bad! If you want to know more about the LED power supply, please continue to pay attention to the content update or call us, Fengsen is happy to answer your questions.