Efficiency is the percentage of the ratio of output power to input active power. This is a very important parameter of the triac LED drive power supply. The larger the value, the lower the heat generation of the power supply, which can improve the light efficiency and service life of the overall luminaire, and also reduce the electricity bills of end consumers.

The power factor of the triac led driver is the ratio of the input active power to the total input power. There is also a part that is not used by electrical equipment called reactive power, and the sum of the two is the total input power. ENERGY STAR has certain requirements for PF, but it is not too strict. Both Europe and China are following the requirements of traditional lamps, and there are specific corresponding requirements until about 25W.

The higher the PF, the higher the utilization rate of the grid power supply. If the same amount of electricity is sent, a thinner copper wire can be used to save power generation costs. This is of great help to the State Grid, but it has no impact on consumers. On the contrary, efficiency is more related to individual consumers.

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