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O. FARUK FARSAKOGLU1, IPEK ATIK1,*
Although LEDs (Light Emitting Diodes) were discovered in 1900s, they have been semiconductor materials widely used in lighting industry due to its structure developed in recent years. LEDs are preferred for their advantages such as energy saving, long life, durability, usability for both indoor and outdoor applications. Optimum conditions should be provided for LED in order to benefit from LED lighting in a sufficient manner. Therefore, in this study, we numerically and experimentally focused the factors affecting operation and efficiency of LED drivers such as driving current, drooping and auger effects, luminance efficiency and LED temperature. These factors have crucial importance on operation efficiency of LED driver circuits. Also, we experimentally designed three different current limited buck type Power LED driver circuits; (i) using a balast resistor, (ii) LM317 regulator, (iii) switching regulator by MC34063A..
Power LED, LED driver, Circuit efficiency, Auger effect, Drooping, Temperature.
O. FARUK FARSAKOGLU, IPEK ATIK, Analysis of the factors affecting operation and efficiency of power LED drivers and circuit design, Optoelectronics and Advanced Materials - Rapid Communications, 9, 11-12, November-December 2015, pp.1356-1361 (2015).
Submitted at: Sept. 2, 2015
Accepted at: Oct. 28, 2015
Optoelectronics and Advanced Materials - Rapid Communications
(2022): 0.5 - 2022 Journal Citation Reports (Clarivate Analytics, 2023)
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