"Andy Evans" wrote in message


I'm just finishing off a basic power supply for a computer style CD
player to use as a stand-alone CD player with my hi-fi. I've built it
in a computer PS box, and so far it consists of two 20VA trannies,
configured with 6v and 12v secondaries. I've mounted a 78S05 and a
78S12 on heat sinks about 1.75 ins square bolted to the case, and
have used a bridge rectifier (100v, 3A) and 4,700uf cap for each
supply. Before I hook up the voltage regs, can anyone suggest any
preferred circuits, parts, part values etc for the purpose (cap
values before/after the regs etc, or other solutions)? I'm assuming
this won't run too hot but again, suggestions welcome. The 20VA
trannie for the 12v supply is a bit tight, but I just happened to
have some. Andy

Given that the computer style CD player probably has switchmode drivers for
the platter and arm servos, there's no technical reason not to go the whole
switchmode computer power supply route.

Which outputs of the CD player are you taking your audio feed from?