Hassan Moslemi - 'Engineering and Technical College Department, Esfarayen University of Technology, North Khorasan, Esfarayen, Iran''

In this paper we study Design of the High pressure electronic ballast algorithm for sodium vapor lamp in MATLAB that regulate power by variable frequency despite of voltage variations and characteristic lamp gnawing in total time of lamp longevity. Electronic ballast structure and algorithm of design it, is explained and its design with mathematic model is described. Design process using offer plan in such that in addition of dominant to voice resonance variable frequency and voltage variations keep lamp power to nominal power. Design process performed by consideration characteristic of 052 W sodium vapor lamp. Theory studies ratification with MATLAB

resonance inverter, sodium vapor, trapezoid diagram, ballast structure, high variable frequency