[sdiy] Re: [AH] synth-diy?

[Seb Francis]

Tim Parkhurst wrote:
> From what I've read, using a center tapped
> xfmr reduces the ripple in the rectified DC output, so this would be
> the best performing solution.

Well yes, but you can always just use a smoothing capacitor twice the 
size with a single output x-former to get the same ripple voltage as 
with a centre tapped.  Sometimes it's just more     convenient to use an 
external AC wall-wart and keep the mains completely out of it.

Seb