Nowadays, in the LED lighting market, there are non-isolated design and isolated drive power. The physical design determines whether the drive is isolated or non-isolated. Security rules usually require the use of two separate isolation layers. The designer can choose two kinds of physical isolation layer, namely plastic diffuser cover and glass cover, and use non-isolated power supply. If the cost of physical isolation is too high, there are mechanical difficulties, or too much light is absorbed, electrical isolation must be addressed in the power supply.

The led driver power supply with isolation transformer or electrical isolation means that the LED can be directly touched by hand without electric shock. Although the LED drive power supply without isolation transformer can still achieve partial mechanical insulation with the help of the protective casing, the LED at this time cannot be directly contacted when it is working.

  Isolated led driver power supply are usually larger than non-isolated led driver power supply of the same power level. Lighting designers must carry out a lot of cost and design optimization work in each product they design. As it is suitable for different applications, whether to use an isolated insulating transformer or an isolated protective lamp housing, designers will always have different opinions from different perspectives.

   Usually, they will analyze from many aspects, such as cost and manufacturing process, efficiency and volume, insulation reliability, and safety specifications. The cost of driving with a transformer is higher, but it also makes LED lamps more practical, which can meet the needs of end users who occasionally touch dimmable LED driver. When the glass envelope of the incandescent lamp is easily damaged, an ordinary bulb of the E27 model can be replaced with an LED lamp.

   In addition, lamps used in industrial areas or office spaces do not need to contact end users, such as street lamps and shopping malls. At this time, LED lamps do need isolation transformers. Transformer-based isolated led driver 12w will be the mainstream.