It's not good to have a non-polarized light
O2Micro has invented the three-segment LED light bulb/lamp tube dimming technology, which is not clear, and is said to be more efficient than PWM.
If it's PWM light, it's very efficient, even if it's light load up to 80%
I think what you're saying is "power increase" is the efficiency of the dimmer. When the LED is light-emitting, it will be less efficient when using the TRIAC dimmer, only about 10%.
