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4hv.org :: Forums :: General Science and Electronics
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Is this pump good for vacuum tubes?

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Bored Chemist
Mon Jun 02 2008, 04:54PM
Bored Chemist Registered Member #193 Joined: Fri Feb 17 2006, 07:04AM
Location: sheffield
Posts: 1022
In order to produce commercial quality vacuum tubes you need, not only a decent pump system with a turbo or diff pump, you need getters and vacuum bake out gear too.
Not an easy starting point for the home experimenter.
On the other hand, if you want to experiment with questions like "how bad a vacuum can I get away with?" then the sort of pump used for air conditioning work will probably do, as would the old faithful fridge compressor.
However, perhaps the important point here is that the pump indicated in the first post will not do the job.
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Arcstarter
Mon Jun 02 2008, 05:21PM
Arcstarter Registered Member #1225 Joined: Sat Jan 12 2008, 01:24AM
Location: Beaumont, Texas, USA
Posts: 2253
Thanks for all of the answers! I did just want to experiment with how vacuum tubes can be made, maybe discover some stuff i didn't know. I am going to go pick up an old a/c vacuum and see if i can get it to work worth any thing. The thing that makes me mad is that i used to have an old rotary vane pump. It was in full working condition. I don't think it was powerful enough though. It was made for i guess sucking oil up or something like that. It had a regulator and came in a nice blow molded case. Oh well... mad
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