> If it's 6VAC then you might be OK if you dispense with the 5.7V
> idea. Assuming the worst and it's just 6VAC that would give around
> 8VDC after the bridge.

( sqrt(2) * 6 ) - ( 2 * 0.7 ) = 7.08

So where do you buy your diodes?

And note that this is the top value across the buffer elco, so you must
take the ripple into account. And the trafo rating will have a
tolerance, maybe 6V 10%. And the AC mains input certainly has a
'tolerance', often 10% or even 20%.

Wouter van Ooijen

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Van Ooijen Technische Informatica: www.voti.nl
consultancy, development, PICmicro products
docent Hogeschool van Utrecht: www.voti.nl/hvu
 


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