LED bulb Power Basics introduction

LED bulb lights are powered by electricity, the power supply must also be mains AC input, directly referred to the mains power supply.

LED bulb Power Basics introduction

1, LED bulb power basic types: it mainly divided into: isolated and non-isolated, which is called that the load side of the line of fire 220V isolation. Generally speaking, non-isolated do not need isolation transformer, so the cost is low, but requires high pressure aluminum plate, otherwise it is possible to live radiator. It is less likely to pass safety inspection. Isolated is relatively safe, relatively easy to pass safety regulations, but the cost is high.

2, LED bulb power supply output power: because the volume size bulb incandescent bulb must be considerable, so the radiator size is limited, there is no more than 9W, so the common multi-LED power we saw is 3W, 5W, 7W.

3, LED Bulb Power Efficiency: Average isolated in 80-85%, and non-isolated in 90%

4, LED bulb power factor (PF): 0.5-0.6 without PF Correction, plus PF correction is at 0.9-0.99

5, LED bulb volume size: Due to little room left for LED bulb, so the volume is very strict.