Design and evaluation of a 28W solid state lighting system

摘要: Two solutions for twenty-eight watts solid state lighting system were performed. The first one using two cascaded stages (power factor correction and constant current source) the second is an integrated stage source integrated). For each solution corresponding design methodology was developed electrical performance evaluated in terms of Power Factor (PF), Total Harmonic Distortion (THDI), efficiency regulation. To reduce energy consumption concept necessary to have systems that take advantage electric power on a better way also not interfere with other equipment connected mains. Therefore it important supply high low total harmonic distortion current.