Lovejoy:
So something like this you mean?

http://cgi.ebay.com.au/Variable-Line...item3a543b1b36

and by my understanding do you get rid of the capacitor on the input?, since the power is always constant, not switching...sorry if I`m totally off the mark for the theory.

May consider what you have done, I`m sure having a linear power supply around the place would be handy for other applications down the track anyways.