@ Tahir brother’s a nice project, pc power supply transformer carried out with a 12 volt input voltage of 2 × 55 .90 volts + – symmetric voltage is turning circuit sg3525 PWM control IC used this SMPS circuit... Electronics Projects, SG3525 EI33 200w-600w ATX DC DC Converters Circuits "dc dc converter circuit, power electronic projects, sg3525 circuit, " Date 2019/08/01