LED living room ceiling lamp has sectional dimming and stepless dimming, which is good? What kind of power saving and low energy consumption?
LED stepless dimming, if the use of TRIAC dimmer, light load efficiency will be very low, only about 10%. If the PWM dimming, the efficiency is very high, even light load can reach 80%
LED ability is energy-saving, but also dimming, this is not to turn the power of thermal energy to go? Is it still energy efficient? Personally think that the relative points of the section of the bar, paragraph well, that section of electricity, of course, the province.
With stepless change have different advantages and disadvantages: fewer people do not have the place closed - sub, but often one easy bad. Although stepless adjustment is the whole electricity, can not take care of a key, but work in LED than rated current under the condition of small life will multiply long, the total life is much longer than the top, like some more light flashlight, only a part of dark light, finally is the bad, and the adjusting method is not a simple resistor in series to reduce the current, so the entire dimming is than full light electricity, similar in principle, with the dimming incandescent lamp so that single from power considerations are similar, but from life, stepless was stronger than the segment.
