LED driver description, reliability aspects and factors. Currently, the most using two types of topologies for LED drivers are: More simplier quasi resonant Flyback topology with implicit active Power Factor correction for the input power up to about 120W. Resonant LLC topology, more complicated for 200W+ of input power. Good filtering is mandatory incumbent on developer, by the way, there is a standard.
Default saving mode: 4 hours after connecting the power supply luminaire in nominal (maximum - 40W) mode, the next 5 hours the luminaire is in saving mode (50% - 20W from max. Power input), then the nominal mode is set until the luminaire is switched off. Recognized artificial midnight management mode: After "recognition" of two consecutive operating nights, the luminaire automatically switches to saving mode in the time interval from 23:00 to 04:30.
Blue spectra are the highest frequency spectra of visible electromagnetic waving looking out by human sense. By the quantum (Photons) view, blue one is the most energetic powerful of the visible spectra (white lighting). For these reasons is technologically suited for manufacture converted type (generating photons with lower energy after impact of higher energetic photons on the Converter - Phosphorus or baryta mixtures) of White LEDs.
The reliability of electronic devices is called the probability that an electronic device works satisfactorily under specified technical conditions for a certain period of time. I express reliability by a number in the range 0 to 1. The failure rate of an electronic device is the opposite meaning of reliability. It is best expressed by the mean time between failures (MTBF).