Another New Site Review.

[Benedict.Smith]

Nothing wrong with a linear power supply and 7805. The lack of noise is a positive advantage. Lower effciency is the draw back but what is a couple of Watts?

The only problem is 7805 regulators normally only handle up to 1A and even then need a heat sink, there are other similar ones that have higher current ratings (I can't recalls he type numbers off the top of my head), why not just add a decent LC filter network, that is what I have done and it is as quiet as you could wish.
Ben.