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RE: ARchive of tube specs?
Subject: RE: ARchive of tube specs?
Date: Mon, 21 Apr 97 07:15:06 UT
From: "William Noble" <William_B_Noble-at-msn-dot-com>
To: "Tesla List" <tesla-at-pupman-dot-com>
if it works, OCR of any tables would make the files quite a bit smaller
-
graphs wouldn't OCR well but if converted to monochrome rather than grey
scale
a graph doesn't take up much space. Also, if I understand TIFF and JPEG
correctly, a compressed TIFF file will be about the same size but will
expand
back exactly, whereas a JPEG may not exactly reproduce the input file.
-----Original Message-----
From: Tesla List
Sent: Sunday, April 20, 1997 9:17 AM
To: tesla-at-poodle.pupman-dot-com
Subject: ARchive of tube specs?
Date: Sat, 19 Apr 1997 19:14:39 +0300 (EET DST)
From: Kristian Ukkonen <kukkonen-at-cc.hut.fi>
To: hvlist-at-Anchorage.ab.umd.edu
Subject: ARchive of tube specs?
Hello everyone,
I recently got an idea of starting to scan specs-sheets of tubes and put
them available to the 'net. Here I mean tubes that are of use for HV
work/hobbies - triodes/tetrodes/thyrathrons/ x-ray/ignitrons/etc. - and
are rare to find.
I do have specs for some tubes (like H2-thyrathrons, tri/tet-rodes etc.)
but the amount of specs is not _that_ great.
So, the question is if anyone out there is willing to join the effort? I
don't know any archive like this (*HV*-tubes) on the 'net so this would
be
VERY useful for us all.
My plans include scanning the specs sheets to JPG pics. That way the
filesize will be rational and JPG is a universal format most programs
can
read and comprehend. Postscript, where applicable, will be used as well.
Within a week there shall be specs for:
H2-thyrathrons : 5c22, 5948a, 7322, 8503b, 8553/ku-72z, nlcx1140,
nlcx1159
thyrathrons: f189, f205, f207, f211, f246
triodes: ax125/2000
tetrodes: ax5184, ax5186
available at ftp://nic.funet.fi/pub/sci/electrical/tubes/..
Later I add (mostly) Philips data sheets on old xmitter (power)tubes -
radioclub at university has these databooks. I may add specs on x-ray
tubes (mostly medical with rotating anode) as well.
SO: Anyone out there with spare time, scanner and specs-sheets?
Please, reply via e-mail.
Kristian Ukkonen.
---------------------------------------------------------------------------
| Kristian Ukkonen | Do as thou wilt shall be the whole of the
law |
| kukkonen-at-alpha.hut.fi |_____ Chance favours the prepared mind
|-------
| http://www.hut.fi/~kukkonen | Fear is the mind-killer |---------
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