# How to design a power supply unit [closed]

How do I design a power supply unit with:

Input: 230 Vac
Output: 5 Vdc, 500 mA


Use Switching Regulator for my design.

## closed as not a real question by Adam Lawrence, Dave Tweed♦, Olin Lathrop, Leon Heller, markragesNov 1 '12 at 15:25

It's difficult to tell what is being asked here. This question is ambiguous, vague, incomplete, overly broad, or rhetorical and cannot be reasonably answered in its current form. For help clarifying this question so that it can be reopened, visit the help center. If this question can be reworded to fit the rules in the help center, please edit the question.

• This is far too vague. You make no mention of isolation, topology, cooling, open vs. closed frame, input tolerance, output tolerance, ripple current, EMI requirements, safety requirements, reliablity requirements (MTBF), PFC ... without specific details this question should be closed, since there can be no specific answers to a non-specific question. – Adam Lawrence Nov 1 '12 at 12:46
• This is an odd question. If you haven't a clue how to design a switching regulator unit, how on earth could the result ever be your design? – Alfred Centauri Nov 1 '12 at 12:47