On 19.01.2013 07:57, n o s p a m p l e a s e wrote:
> What's the difference? Do they mean the same?
>
No.
The first could be the title of a book describing "power electronics";
the second doesn't mean anything on its own - it's just a sequence of
words that might be part of a sentence.
Regards, Einde O'Callaghan