3 Sep
2012
3 Sep
'12
2:09 p.m.
Hi all --
Working on recapping an old (failed) 5V supply in that Microkit machine
I picked up last week; the main filter capacitor is rated at 16,000uF
15V, axial. So far in my searches an exact (or even close) match in an
Axial form-factor seems to be unobtainium. I can find snap-in or
screw-in types but those are going to be clumsy to retro-fit given the
space it has to occupy. (plus they're pretty expensive.)
How far off the original capacitance value can I stray before it
compromises the original design?
Quite a long way!. +/-20% is regardsd as close-tolerance :-)
Don;t go too low, it'll increase the ripply. I would think that 15
millifarads would be OK< though. Don't go ridiculously high either. but
20 millifarads should be OK.
-tony