Abstract: This study is aimed at realizing a more effective switching mode power supply unit for powering household electronic equipment. To achieve this, the monolithic regulating pulse width modulator, SG3524 was used. This format minimizes cost, size and weight and thus avoids component mismatch problems thereby achieving higher efficiency and stability. As a result, of the choice very good performance characteristics were obtained in the areas of voltage regulations, variation of load current with load increase and maximum power. Comparison between this type of power supply and conventional dissipative method shows its relative merits.