"How it's made" vacuum tubes.. - diyAudio
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Old 20th May 2012, 03:05 AM   #1
Remlab is offline Remlab  United States
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Default "How it's made" Vacuum tubes

http://www.youtube.com/watch?v=8n4WVRKkmww
So that's why they're so damned expensive..
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Old 20th May 2012, 03:24 AM   #2
Apex Jr is offline Apex Jr  United States
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This was just on TV as a rerun tonight and I saw it a couple hours ago on
Sci Channel.
Always good to know how there made....
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Old 20th May 2012, 03:39 AM   #3
Simon B is offline Simon B  United Kingdom
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Much prefer this:

Hand Made Tubes by Claude Paillard


He's a French radio ham (F2FO), and the tubes have been used succesfully for these purposes. He starts off cutting out anode material with a swiss army knife and later on plots curves on an analogue plotter.
The soundtrack is piano music, with echoes of Hot Shots.......

His website is in french, but has a google translate link right at the top.

F2FO

Seriously, if you watch one thing on Youtube in your whole life, watch this.
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Old 20th May 2012, 04:22 AM   #4
nazaroo is offline nazaroo  Canada
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At 1:25 the voiceover makes a ridiculous claim,
attributing the difference in voltage between anode and cathode
to the coating on the anode!
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Old 20th May 2012, 08:43 AM   #5
Remlab is offline Remlab  United States
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Quote:
Originally Posted by nazaroo View Post
At 1:25 the voiceover makes a ridiculous claim,
attributing the difference in voltage between anode and cathode
to the coating on the anode!
OH MY GOD!! Sorry I posted it... Should have Known better...

Last edited by Remlab; 20th May 2012 at 09:06 AM.
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Old 20th May 2012, 09:39 AM   #6
Remlab is offline Remlab  United States
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Now this is what I call embarrassingly inaccurate.. Especially for a company called "Accura".
http://scaryideas.com/content/17582/

Last edited by Remlab; 20th May 2012 at 09:49 AM.
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Old 20th May 2012, 10:36 AM   #7
AJT is offline AJT  Philippines
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Quote:
Originally Posted by nazaroo View Post
At 1:25 the voiceover makes a ridiculous claim,
attributing the difference in voltage between anode and cathode
to the coating on the anode!
care to explain further? this is interesting....
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Old 20th May 2012, 01:50 PM   #8
yajnaS is offline yajnaS  India
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The video has inaccuracies that makes it not worth watching.

And this is a repost of a repost of a repost.

How Its Made - Vacuum Tubes

http://www.diyaudio.com/forums/plana...uum-tubes.html
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Old 20th May 2012, 03:43 PM   #9
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In my younger days there was and article in Popular Electronics of how some of the hams would make all of their stuff from junk found around the house.
Capacitor's,Rectifier's from copper oxided plate copper and Vacuum tubes made from test tubes!
Ever since then I have always wanted try my hand at it.
I few years ago I found I website where a guy had made his own CRT's and made a clock out of one using a PIC processor to run it.
This stuff is just too cool !!!

After I had read that article back then, I was determined by the 6th grade to build a television compleatly from scratch.
I had drawn up all of the plans but I couldn't find anyone that had a vacuum pump that I could use.
There was a local glass blower that said he could make me a Mercury Diffusion pump for like $30 but being such a young lad in the early 70's,I had no money to work with and $30 back in those days was I good hunk of change.
So it still remains a dream.
Maybe one day I will take the time to do something along those realms.
Lately, I have collect a couple of large 2HP air conditioning compressors to make one and experiment in the field one day.
That Magazine and the American Scientific Handbook as well as some very good Science Fair books is what sparked my Imagination back then and since then I have not stopped.




jer

Last edited by geraldfryjr; 20th May 2012 at 03:49 PM.
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