in this tutorial i shared Switch Mode Power Supply SMPS working principle (Soft start startup, running & feedback) in urdu hindi language how smps takes soft-start using startup resistor, then takes vcc voltage from auxiliary winding and finally takes feedback signal to maintain the output voltage basic working concept of smps switch mode power supply how smps start up circuit works smps vcc voltage path smps voltage regulation concept switching mode power supply,smps,switching mode regulator,circuit diagram,switching mode power supply tutorial,basics of switching mode power supply,smps tutorial,how to repair switching mode power supply,basic working of switching mode power supply,smps basics,how to repair smps,how to repair switch mode power suppies,how smps work,how switching mode power supply works,haseeb electronics,chowk azam,electrical engineering,electronics engineering,physics,repair