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On Fri, 30 Sep 2016 04:40:51 -0400, Roger wrote:
>If you want high vacuum there is little practical difference in pressure
>comparing atmospheric pressure to 10^-1 Torr, or 10^-5 Torr. It's close
>to 15 psi differential at either vacuum.
REPLY:
The more difficult issue might be obtaining a pressure vessel suitable
for transformers. Where I worked we had one custom made. Remember,
there is 15 PSI pressing in on hundreds of square inches. A disastrous
implosion is possible.
73, Bill W6WRT
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