In Part-1 We have designed 5 volt smooth DC source for mobile charger . In this section we are going to make a short circuit protection circuit so that if any short circuit occurs the whole circuit will not be damaged . This circuit is enough to charge a battery . As shown in schematic diagram below if button is pressed the short circuit will occurs in this case the D5 LED will glow instead of damaging the whole circuit . The operation of this circuit is shown below
This is first tutorial on power electronics catagory and In this tutorial we are going to make a mobile phone charger using easily available components . This is on going series and in the first part we will design a smooth DC voltage source from 230 volt 60 Hz power supply which is generally used in our home .