Hi Ken:
See my paper on floating circuits in the Product Safety
Newsletter:
http://www.ewh.ieee.org/soc/emcs/pstc/tech-spk.htm
This should answer all your questions. If not, please
get back to me, and I'll answer any additional questions
you may have.
Best regards,
Rich
ps: Provide a copy to your certification houses.
> Hello Group,
>
> A circuit uses a floating ground in the secondary, and caps are used for
> protection from the secondary outputs to earth ground. The question is,
> under spacings requirements, would the secondary have to meet the high
> voltage requirements for spacings for primaries due to this earth ground.
> A few agencies have expressed desires to short the primary to secondary and
> require the the secondary to meet primary voltage spacings to this earth
> ground trace.
>
> Any help would be greatly appreciated. And thanks again for all your
> opinions
>
>
>
> Thanks,
>
> Ken Matsuda
>
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