I know what you're saying ... |
But, Rodge, how come you've never shown us how to make vacuum tubes? |
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Thursday, January 10, 2008
You never asked before
7 comments:
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Anonymous said...
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I'm actually old enough to have done this with kits in freshman physics class. One thing that he doesn't show so well is the final flash. After you've sucked down the tube and sealed it off, you run a large current between two of the electrodes such as the cathode and the filament that have been temporarily connected by s short piece of aluminum wire. The wire goes poof and consumes the remainder of the oxygen in the tube and is responsible for the silvery coating on the glass of many tubes.
In graduate school I made small ICs, but that's another story. By then we were laughing about vacuum tubes calling the high voltage FETs with an all weather glass encapsulation.
JLW III -
1/10/08, 8:18 AM
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Rodger the Real King of France said...
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"all weather glass encapsulation."
LMAO.
Huh? -
1/10/08, 9:00 AM
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Anonymous said...
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Amazing!
Mile66 -
1/10/08, 9:09 AM
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Anonymous said...
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Not "solid state", "hollow state".
MC -
1/10/08, 11:19 AM
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Anonymous said...
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Cool ...
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1/10/08, 12:35 PM
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Anonymous said...
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I thought that was fantastic!
Boazo -
1/10/08, 11:07 PM
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Anonymous said...
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Very impressive. I'm a former ham myself and a machinist, and I have a pretty good idea of how much time and effort he put into the tools he made to do that work. It's an odd hobby, but there are odder ones. One day there will be guys like him
working in living history museums, kind of like going to Williamsburg to see how they made candles. -
1/11/08, 10:03 PM
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