AVR-Chat

At 05:34 PM 7/9/2006 +0000, Ryan wrote:
>btw, thanks for pointing out the polyswitches.  I knew they existed, I
>just didn't know what they were called.  I'll have to look into those
>for current limiting the outputs.  I'll have to see if they make them
>in 5 amp'ers.

Remember they are rated like fuses and don't have a sharp knee.  A 3A rated 
device will conduct 3A for a long time w/o opening.  Check the curves when 
designing.  In the 60-72V range I think the highest rating at the moment is 
3.75A hold/7.5A trip.  They can be paralleled but you have to watch the 
thermal paths.

Robert

" 'Freedom' has no meaning of itself.  There are always restrictions,   be 
they legal, genetic, or physical.  If you don't believe me, try to chew a 
radio signal. "  -- Kelvin Throop, III
http://www.aeolusdevelopment.com/