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Re: gEDA-user: buzzing board

On Sep 19, 2007, at 3:08 PM, DJ Delorie wrote:

>
>> Kemet does have a "surge-robust" family, the T495 series.
>> http://search.digikey.com/scripts/DkSearch/dksus.dll? 
>> lang=en&site=US&keywords=Kemet+Tantalum+T495&x=0&y=0
>
> Grr, nothing small enough.
>
> OTOH, would the LDO limit the inrush current?

It should. The other thing to check is ripple: if you're getting  
enough to make a ceramic sing, the ripple current might be a problem  
for Ta. Check the ripple voltage and frequency across the cap and use  
the resistance and capacitance ratings to deduce a current.

>
>
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John Doty              Noqsi Aerospace, Ltd.
http://www.noqsi.com/
jpd@xxxxxxxxx




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