"Stevie D" wrote in message
ps.com...
TV on bench with vented main filter cap, (220uf @ 200v), and I've a
simple query. Can I up the ante on this and replace with a 470uf @
200v? It's a switched mode p. supply and the pop was a result of a
power surge, didn't take anything else out. Is it just a question of
economics when it comes to filtering, (cheap walmart tv), or might I
disturb the fragile balance in the smps. My thought is, better filter,
smoother dc. Any thoughts???
Cheers, Steve


Well, your thought is correct about smoother DC, however, there are other
considerations that are important as well. Inrush surge current is the first
thing that comes to mind. When you first apply power to an uncharged capacitor,
it looks like a dead short across the line. The higher the capacitance, the
higher the surge current. If the surge is large enough, you'll blow the line
fuse. Unless you just like digging around in a dead TV set just to change the
fuse every few times it's powered on, it would definitely be a nuisance.


--
Dave M
MasonDG44 at comcast dot net (Just substitute the appropriate characters in the
address)

Some days you're the dog, some days the hydrant.