14 Sep
2010
14 Sep
'10
1:35 p.m.
Oh, I have one,
but it's only a little 1cm radius one, designed mainly
for detecting the helium peak when looking for leaks. What I don't have is
a suitable vacuum pump (yet...)
You might be interested in this site (sorry it's a Web site with
pictures and so on, some of it will probably be readable using Lynx, and
it's in French to boot, I'm sure it would interest you however):
http://paillard.claude.free.fr/
He makes his own triode valves (or tubes, for those of us who speak the
other language known as English ;-) ) and in order to do that he has
designed and built among other things his own high vacuum pumps. I'm
sure you would be able to make one like his.
That sounds like fun :-). I've been re-reading 'Instrumnts of
Amplification' recently, but in that book, the author bought a
second-hand rotary vacuum pump (which doesn't really give a hard enough
vaduum anyway...)
-tony