On Mar 2, 5:53*pm, ContestID67 wrote:
*How big of a cap would
we need to survive a 1sec loss of power with a 500ma load allowing for
a 1VDC drop?

Constant current discharge of a capacitor (will be close enough)...

C = t . i / deltaV
= 1 . 0.5 / 1
= 0.5 F

Easily doable with today's supercapacitors. But as I pointed out
earlier, mechanical switch issues usually happen over time frames of
10's of ms. Not 1 sec. And why do anything if it is not really needed.

Darryl