Power Supplies Given to Me

[danial stocks]

I made an extended 'pi' section filter for use on a computer SMPS once.. I 
had 3 big toroidal inductors in series - they were about 30-40mm cores full 
of windings, nothing too tricky, just some toroids I found somewhere, from 
the junction of the toroids went a really big cap to gnd something big like 
3300uf, higher?, and also a 100nf ceramic cap across the big cap. - so there 
were 2 of these cap assy's used between the 3 toroids. This seemed to kill 
off all the power supply noise, but it was running a transmitter, not an 
audio cct, but the principle should still work fine..
Cheers,
Dan
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