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Real or Snake Oil??

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Posted on July 27, 2012 at 20:48:36
jtube


 
saw this on ebay any thoughts??

 

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RE: Real or Snake Oil??, posted on July 28, 2012 at 02:15:11
Thomas Mayer
Manufacturer

Posts: 575
Joined: May 8, 2001
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

 

Look at the pics...., posted on July 28, 2012 at 08:46:10
nicolas
Audiophile

Posts: 154
Joined: August 14, 2001
...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

 

Not to belabor the point, posted on July 28, 2012 at 15:16:31
Mechans
Audiophile

Posts: 1221
Location: East Coast
Joined: May 23, 2004
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

 

RE: Real or Snake Oil??, posted on July 29, 2012 at 13:47:08
Neff


 
Snake oil. Person is desperate to turn a buck. 300B does not have an oxide filament, plus is a power tube!

 

Errr....Cathode type oxide filament.....nt., posted on July 29, 2012 at 13:49:11
Neff


 
.

 

RE: Real or Snake Oil??, posted on July 30, 2012 at 04:32:00
amnesiac
Audiophile

Posts: 466
Joined: August 21, 2002
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.

 

RE: Real or Snake Oil??, posted on July 30, 2012 at 07:10:28
Neff


 
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.

 

RE: Real or Snake Oil??, posted on July 30, 2012 at 08:46:21
amnesiac
Audiophile

Posts: 466
Joined: August 21, 2002
Will Do Ta Neff

 

Rejuvenation of Vacuum tubes, posted on July 30, 2012 at 13:09:43
Alpha Al
Industry Professional

Posts: 1974
Location: N. Carolina
Joined: February 16, 2004
Contributor
  Since:
December 0, 0000
Here's how it's done (see link)

 

RE: make one yourself, posted on August 3, 2012 at 20:29:18
benie
Audiophile

Posts: 1823
Location: Alberta, Canada
Joined: October 24, 2004
here's how to do it

 

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