Author Topic: Jefferson Tube Restorer  (Read 515 times)

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Jefferson Tube Restorer
« on: December 06, 2016, 01:19:15 PM »
This goes back to the early 1920s. 4 pin tubes with bayonet mount. Top view shows two pin connections. PM page presents it well (note the screw in bulb socket power plug).

Did these really work and if so, how, cleaning off what?

http://www.ebay.com/itm/VINTAGE-1920S-JEFFERSON-TWO-TUBE-TUBE-REJUVENATOR-NR-/162302779687
            John . . .

              

Offline 19and41

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Re: Jefferson Tube Restorer
« Reply #1 on: December 07, 2016, 02:44:52 PM »
I would bet they increased the filament potential to "burn" off any residual oxygen and carbon in the envelope.  Not too much else one can do with household current
"Any sufficiently advanced technology is indistinguishable from magic."
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Offline WB6NVH

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Re: Jefferson Tube Restorer
« Reply #2 on: April 24, 2018, 02:13:56 PM »
They were used to "rejuvenate" early and primitive tubes with thoriated tungsten (?) cathodes.  Yes they did work, at least a couple times, and yes, they worked by burning off impurities.

Offline RB

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Re: Jefferson Tube Restorer
« Reply #3 on: April 24, 2018, 02:29:08 PM »
There were machines for both small tubes, and crt's
The cleaning would usually" clean off impurities from the elements,but it would return.
The process could be repeated a few times to obtain the desired result. which prolonged the life of the tube.
The flip side, too much extra juice, could pop the element, and dead tube.
This procedure did not work on later tubes, as the construction was just too whimpy,
and the elements would melt, and short to each other.

Offline Dan/Panther

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Re: Jefferson Tube Restorer
« Reply #4 on: April 25, 2018, 11:48:37 AM »
The earlier 1950's CRT rejuvenators, were actually used to remove all of the Dead Cowboys, and Indians that had collected on the bottom side of the CRT.

D/P

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Offline RB

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Re: Jefferson Tube Restorer
« Reply #5 on: April 25, 2018, 11:54:14 AM »
The earlier 1950's CRT rejuvenators, were actually used to remove all of the Dead Cowboys, and Indians that had collected on the bottom side of the CRT.

D/P
Oh, that's good!
you twisted rascal! ;)

Offline 19and41

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Re: Jefferson Tube Restorer
« Reply #6 on: April 25, 2018, 01:13:12 PM »
 ;D
"Any sufficiently advanced technology is indistinguishable from magic."
Arthur C. Clarke