[sdiy] Prophet 5 -15v rail is shorting... Need advice

[Gil W.]

I asked myself the same question - does any problem
actually *exist* or is the tantalum just not good
enough for this task ? I think the original cap was a
10uf/10v tantalum...



--- GRAHAM ATKINS <gatkins at blueyonder.co.uk> wrote:

> David,
> 
> The electrolytic may be more tolerant than the
> tantalum but
> the underlying problem with high ripple off the
> rectifier may still
> be there, are you sure it is OK to connect to the
> rest of the circuits.
> Are you just covering up the problem ?
> 
> Graham
> On Nov 7, 2007, at 9:46, Gil W. wrote:
> 
> > Hi,
> >
> > The problem has been solved by replacing the tant.
> > with regular 10uf/50v cap...
> >
> > Thanks all !
> >
> >
> > --- "Cornutt, David K"
> <david.k.cornutt at boeing.com>
> > wrote:
> >
> >> Possibly either the rectifier has an open diode,
> >> or something else is causing the supply rail to
> >> oscillate.
> >> Tantalums don't like a lot of ripple current.
> >>
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> 
> 


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