----- From: "Olin Lathrop" <olin_piclist@
> Antonio Sergio Sena wrote:
> > The filtering i have is a couple of electro caps. If i add some ceramic
> > (eg 100nF), the SMPS doesnt start.
> 
> That's not good.  This probably means your switcher is right on the edge at
> startup, and is relying on the ESR of the electrolytic caps.  Ugh.
> 
> 
> *****************************************************************
> Embed Inc, embedded system specialists in Littleton Massachusetts
> (978) 742-9014, http://www.embedinc.com

Or perhaps it is seeing the low ESR cap as a short and refusing to start.

$0.02 - KF4HAZ - Lonnie

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