As tindle noted, building switching power supplies is not a trivial task.
In such a design there's generally a large gap between theory and practice.
And you certainly can't expect to throw some random parts you have, especially inductors, into the mix and expect it to work.
Also, building devices such as a switching power supply is very difficult without an oscilloscope to see what is happening.
If you want to do other types of such designs I suggest you look into purchasing one, otherwise you will continue to be frustrated, not knowing why your circuit doesn't work.
In such a design there's generally a large gap between theory and practice.
And you certainly can't expect to throw some random parts you have, especially inductors, into the mix and expect it to work.
Also, building devices such as a switching power supply is very difficult without an oscilloscope to see what is happening.
If you want to do other types of such designs I suggest you look into purchasing one, otherwise you will continue to be frustrated, not knowing why your circuit doesn't work.