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216.212.229.129
saw this on ebay any thoughts??
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here's how to do it
Here's how it's done (see link)
I have some nos in box euro globe 45's with poisoned filaments. I wish I could find somebody I could trust enough to rejuvenate those. I plan to build an amp and try bake them for a day then run them in the amp in the hope they will come good.It does my head in that such tubes with new filaments cant work. Perhaps a current source on the filament might up the voltage until the filament resistance reduces.
The CRT process raises the filament voltage in steps for about 10-12 minutes to burn off unwanted residue on the cathode. I am not sure how to perform the same on an open filament type tube. The CRT raises the 6.3 volts in steps to about a peak of 10 volts for 5 minutes.
You could try one 45 tube & slowly raise the filament voltage to 4-4.5 volts for 5 minutes & retest the tube at standard filament operating voltage. Do not test the tube at higher than specified filament voltage.
Will Do Ta Neff
Snake oil. Person is desperate to turn a buck. 300B does not have an oxide filament, plus is a power tube!
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...and you will see this thing is for CRT (Cathode Ray Tubes) as in picture tubes for TV. should be gifted to a museum if you ask me.
the best - nicolas
Hi!
tube regeneration is a process through which emission can be somewhat resotred when a tube comes to the end of it's life. The actual process of regeneration and the amount of additional life which can be achieved various a lot from tube type to tube type.
Thomas
But it does say it is for Cathode Ray Tubes. Where the guy got the idea that it could be used to restore precious triodes and the like, are prolly just fantasy. If such a device existed don't ya think someone would have started a business by now and that thing looks pretty old. I mean cryogenics is popular enough imagine how well this business would do?
Steve
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