Power product quality, in addition to the design life of the power supply itself, another major factor is the power output ripple.

The design life of the power supply design life of the power supply, removal of the stability of the power supply design, affecting the design life of the power supply in the case of the electrolytic capacitor of the power above. The same power, the electrolytic capacitor life is longer, the longer the life expectancy of the design of The effect of the power supply for led tube.

 

LED tube, consists of the following components: light source, power, housing, light board (PCB), as well as various accessories combination together wire connecting material.

    Light source, is a core part of the led tube, led tube quality, in large part depends on the quality of the light source! The light source used in the led tube on the market there are basically two types: F5 straw hat and a 3014 patch (some manufacturers use 3020 or 3528, etc.). 

An important reason is the low life expectancy of LED drive power drive power required for the life of aluminum electrolytic capacitors, the main reason for working long hours and the LED lights inside the ambient temperature is high, resulting in aluminum electrolytic capacitors will soon be consumed dry, life is much shorter, generally only work about 5,000 hours. The life of the LED light source is 50,000 hours, the working life of aluminum electrolytic capacitors have become the short rib of the LED drive power life.

 

Isolated power supply or non-isolated power supply?

The isolated power supply using a transformer to 220V voltage transformer voltage down to a lower voltage, then rectified into DC output power supply road. Because the primary coil of the transformer to withstand 220V voltage, the secondary coil is exposed only to low AC voltage output, and is not a direct connection between primary and secondary coils, so called isolated power.

The non-isolated power supply with 220V input to the electronic circuits, electronic components step-down output, input and output is connected directly through the electronic components, so called non-isolated power supply.