14 Sep
2010
14 Sep
'10
5:17 a.m.
On Fri, 10 Sep 2010 20:02:09 +0100 (BST), ard at p850ug1.demon.co.uk (Tony
Duell) wrote:
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.
/Jonas
14 Sep
14 Sep
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
15 Sep
15 Sep
6:22 a.m.
From: ard at p850ug1.demon.co.uk
Thanks, I will take a look... I am sure I can find some way to view it...
Hi
You need to find a diffussion pump. These will get you down to
10-6 torr without traps. With traps, you can reach 10-9. Of course,
if you have a high speed turbo pump, you can do similar but these
are real expensive, even used. Most diffussion pumps can be had
for scrap value, used.
Dwight
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
12:30 p.m.
You need to find a diffussion pump. These will get
you down to
Indeed I do (My father spoet most of his working days on high vacuum
systems., I think I'd head ofa 'diff pump' before I even went to school...
OIl, from choice. Mercury vapour, even inside a vacuum system (and some
will, alas, end up in the backing rotary pump) is not something I
particualrly keen on....
There is the minor problem of 'where the heck do I set up a vacuum
system, along with all the other things I am working on' :-)
-tony
5212
days inactive
5213
days old
3 comments
3 participants
participants (3)
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ard＠p850ug1.demon.co.uk -
dkelvey＠hotmail.com -
jonas＠otter.se