hi all
i want to design and make a Switching-Mode Power Supply with 200v and 0.5 A output. Please help me how do I start, I have no previous experience
No previous experience and you want to work with 200 volts? Maybe not such a good idea
If you have no previous experience then perhaps a 20v (time times less) switcher would be a better place to start just so you can get familiar with the concepts, including safety.
What do you mean by no previous experience? Do you mean you've never built anything electronic or just not a switching power supply?