Russell McMahon wrote:
>
> Philips have produced a vast range of app notes and design guides in
> years gone by.
> Presumably these are on the web somewhere - when you find them, tell
> us all where - it would be a major and valuable resource.

http://www.acm.components.philips.com/

>
> Philips are past (and present masters) of all the intricacies of
> magnetic design - they have dealt with smps, ballasts, television and
> much more from near the beginning of each.

If you ask the guys at Supertex, they'll also help you.
They make great switchers.

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