From the basic principle, there are three dimming methods for LEDs, namely linear dimming, PWM dimming and thyristor dimming. Among them, linear dimming has been gradually eliminated due to low efficiency and poor dimming effect. Thyristor dimming can be applied to ordinary incandescent lamps and LED lamps, so it can be directly replaced, but its dimming effect on LED lamps is not ideal, so There are also fewer applications; the most widely used and the best dimming performance is PWM dimming.
