Inductive coil influence on output ripples of current supply

In present paper an innovating LED power supply based on inductive ballast is presented. New design cost efficient power supply is proposed as an alternative to high-end switch power supply (SMPS) for LED cluster feeding. The design schematics had been showed and circuit topology was explained. Ballast inductance and DC filtering capacitor sizing had been chosen after comparative studies of the output ripple level obtained from the current supply. AC current of the LED had to be limited by the same methods, ballast inductance and DC filtering capacitor, in order to comply with LED specifications. Circuit outputs in steady state mode, with different ballasts and different capacitors were simulated using an application called PSIM. MATLAB tool was used for transitory regime.