1. The light effect of the led lamp beads used in the lamp. Inputting different currents will make LED lights have different luminous efficiency, and the luminous efficiency of reducing the power supply current is often higher than that of the full power supply. Same power, high light efficiency and high brightness.
2. The LED series and parallel connection form inside the lamp. The LEDs with the same luminous efficiency have a small number of parallel connections and many series connections. The input current is required to be small. At this time, even if the input current is small, the brightness of the LED lamp beads will be higher.
3. The light source models used in the lamps are different, and the luminous efficiency of the same input current can be high or low.
