In message <[email protected]>, dated
Wed, 5 Aug 2015, Doug Smith <[email protected]> writes:
Actually, discharges involving insulators appear to be polarity
senstive from recently published data. I have confirmed this with lab
measurements. Not sure how this effects safety.
I don't think this is particularly new, although no doubt it's much
better quantified these days. The chemical composition affects if, and
how much, ionization and consequent electron emission occurs at the
surface. So if the discharge path has different insulating materials at
each end, polarity sensitivity is to be expected.
--
OOO - Own Opinions Only. With best wishes. See www.jmwa.demon.co.uk
When I turn my back on the sun, it's to look for a rainbow
John Woodgate, J M Woodgate and Associates, Rayleigh, Essex UK
-
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