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Old 16th Jan 2012, 11:46 pm   #44
Craig Sawyers
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Join Date: Nov 2010
Location: Oxford, UK.
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Default Re: capacitors in series - pitfalls?

Quote:
Originally Posted by Andy Day View Post
Oh dear, I did stir up a hornets nest didn't I?
Bzzzz

Lots of apps notes about voltage sharing - not limited to the one I originally referred to.

For example http://www.coilgun.info/theorycapacitors/AEappGUIDE.pdf
Or http://www.lintronicstech.com/index%..._resistors.pdf

Everyone seems to use different formulae. But then again there are a dozen or more formulae for the maximum heart rate as a function of age - and for me at age 56 they all predict the same +/- 1 beat per minute.

And if you are (say) using two 350V capacitors in series across a 600V supply, do you need balancing resistors? I would say so. They also handily discharge the capacitors after switch-off.

Craig
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