Homebrew PCBs

--- In Homebrew_PCBs@yahoogroups.com, "thespeakerguy" 
<thespeakerguy@y...> wrote:
> Rule of thumb I've used over the years 10 volts per mil of 
isolation 
> on FR4.
> 
> 15kV then equals 1.5" gap


Yeah,  from what I have read, it looks like two or three boards. The 
primary is just a long string of reistosrs.  each about 3.5" long.

Chaddock makes resistors for 25kV and each is about 3.5 inches long 
so one 50m to start will offer enough resistance to limit currrent 
and still offer a reading.

It is the enclosure that will need to be considdered, but that too 
should not pose a probelem with pleanty of board space between the 
traces and the mounting screws.

Thanks for the help all.

Dave