Quote:
Originally Posted by JohnCT
Odd that they would put a 470uf and a 10uf in a can and tie them together, unless Sony just had a metric sh*tload of these left over... The other possibility is when the caps are electrically tied together but are physically on the other side of the board, but that's pretty uncommon from my experience.
If a circuit needs just 10 more uf to run on top of 470uf, it's being run too close to tolerance which is something Sony wouldn't do, so unless they're just using a double can from left over stock, my guess is that it is a small value cap used to help snub out high freq noise.
Zeno makes a great point about putting two different types of caps in one can, but we *are* talking about Sony after all!! 
Since 10 more uf won't make a difference added to 470uf in a bypass configuration, I'd be inclined to add a small value cap in place of the 10uf. If the 10uf is tapped on a point physically away from the 470uf section, I'd use a 10uf with a small value cap across it just to cover all bases.
John |
The 2 caps are not wired in parallel. There's a 15K cap between them. A can type capacitor is always a single roll of foil.and dielectric, and it's always paper, or electrolytic, but never both at once.