How to make a coil high frequency transformer to produce their own switching power supply. Inside the coil would like to wind their own, the hand has a sample of the coil how to copy the line made by

How to make a coil high frequency transformer to produce their own switching power supply. Inside the coil would like to wind their own, the hand has a sample of the coil how to copy the line made by others The first step is to measure the inductance of the winding with the most windings and record it;

The second step is to unload the core by heating it with a hairdryer;

The third step is to remove each coil, paying attention to the order of the windings and the number of turns, although the general machine windings are in a single direction, but it is also necessary to pay attention to the direction of the winding;

The fourth step is to measure the diameter of the wire of each coil.