guys -- i built the psu from a design posted by john swenson in the pc audio forum of audio asylum. there's a thread regarding a linear supply for a fit-pc. that's what i built. he spec-ed adjustable regulators, and i ended up using fixed voltage regulators (2940s) for both the 12 and 5 v supplies. the original spec for power consumption that robscix got for us was 20 watts, but that must be with the headphone amp on the card running. i am just using tha analog outs in an audio-only pc that is in my main system for speaker listening. because of the original power consumption figure, i ended up with a transformer which is bigger than need be, and it ends up supplying about 25v of raw dc. this was too much voltage for the 5v regulator to drop, so i ended up using a second transfomer (same kind, smaller model) for just the 5v section.
it's ugly in its current state, and eventually i'll build it into a 2u size chassis which i already have, once i get ambitious.
all of the parts came from digikey except the chokes, which can be found via a web search.
the audio-only pc is built in an antec fusion case, using the supplied power supply, which is good, but not great. it is a very simple machine, with only a single wd green 1tB hard drive, and a pioneer dvd drive. video is onboard, and it is running xp sp2. i play music on it in the cics cmp2 environment, using winamp, with a recompiled otachan asio plug in, also sourced from audio asylum.
hope that helps.
mark
