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Diverse solar irradiance spectra can be observed under different conditions of time, date, location, weather, etc. Since the solar irradiance spectrum is required by certain scientific and engineering applications, obtaining accurate spectral data is essential. Measurements by spectrophotometers are able to achieve accurate real-time data with high resolution, but at high expense. While in some engineering...
This paper will propose an accelerated lifetime test method for DC or AC supplied electronic control gear for LED modules of outdoor LED lighting products. This accelerated lifetime test method focuses on major failure modes of DC or AC supplied electronic control gear for LED modules of outdoor lighting products, selects suitable conditions, and thus is able to reduce total test duration.
The 2-stage acceleration theory based accelerated lumen depreciation test method for LED lamps/luminaires was released recently as a standard-CSA020, which can reduce the lifetime test from 6,000 hours to less than 2,000 hours. However, to perform as a methodology in the application of that method, still some concerns existed. This paper validated that methodology by experimentally investigation on...
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