[sdiy] switched mode PSU design

[Seb Francis]

Tim Parkhurst wrote:

>You know, there has GOT to be a way to properly filter and/or shield a
>switcher to keep it from goofing up audio circuits.
>
For sure there is .. all the new Mackie Onyx series analog mixing desks 
have switching power supplies built in.

Efficient too .. this big beast uses only 105W:
http://www.mackie.com/home/showimage.html?u=/products/onyx4880/images/ZOOMED_ONYX4880.jpg

Seb