@article{Dumbrava_Pagodinas_Kupciunas_2016, title={Initial Investigation into the Energy and Operational Parameters of LED Modules}, volume={22}, url={https://eejournal.ktu.lt/index.php/elt/article/view/13944}, DOI={10.5755/j01.eie.22.3.13944}, abstractNote={<p>The paper presents an initial investigation into the energy and operational parameters of three LED modules produced by a little-known producer. The paper considers the requirements of Standards TM-21-11 and LM-80-08 applicable in measuring lumen maintenance life, as well as the requirements for temperature in measuring illuminance. The investigation introduces the structural schemes for measuring the efficiency coefficient of the AC/DC converter of LED modules and provides the obtained measurement results. The performed measurements show that the efficiency coefficients of the AC/DC converters of the examined LED modules amount to 52 %±3.5 %. According to the experimental results obtained after measuring illuminance, the established average lumen maintenance life L<sub>70 </sub> is 2,817 hours.</p><p>DOI: <a href="http://dx.doi.org/10.5755/j01.eie.22.3.13944">http://dx.doi.org/10.5755/j01.eie.22.3.13944</a></p>}, number={3}, journal={Elektronika ir Elektrotechnika}, author={Dumbrava, Vytautas and Pagodinas, Darijus and Kupciunas, Irmantas}, year={2016}, month={Jan.}, pages={33 - 36} }