On Nov 29, 5:54*am, Joop wrote:
On Sun, 29 Nov 2009 00:33:13 -0800 (PST), MarkAren

wrote:
Bingo !

http://www.idesignz.org/misc/Simple%...tage%20PSU.pdf

Thanks,

Mark

This is a circuit that does not suffer from temporary abcense of power
during switching. And it is using a transformer with a single
secundary winding.http://www.gigawatts.nl/co/projects/...bel/switch.jpg

Joop

But should note that it puts out twice the voltage from the same
transformer as compared with the bridge/CT circuit. On the other
hand, both voltages use the whole secondary, so the safe available
output power is nominally the same for either voltage, whereas the
output power in the full-wave CT circuit is somewhat less than in the
bridge configuration (assuming negligible loss in the diodes).

Cheers,
Tom