Hand-made vacuum tubes

[amigo]

Strangely no one posted this and it's been going around the Net:

http://paillard.claude.free.fr/

The video shows some true handcrafting and elegance...just how many people in the world can say they make their own vacuum tubes. Hats down to this gentleman from France.

[ken_nyus]

Very interesting, a great video showing the whole process, even the testing of the completed tubes.

[neptune]

Somewhere in the distant past, i remember two similar articles. The first, from the 1920 showed a home made diode valve based on a small car bulb. the anode was actually OUTSIDE the glas envelope.
          second article, more modern involved breaking the glass and adding an additional envelope, and the use of a glue gun and vacuum pump[ Bill Beattys science pages?]

[pese]

Somewhere in the distant past, i remember two similar articles. The first, from the 1920 showed a home made diode valve based on a small car bulb. the anode was actually OUTSIDE the glas envelope.
          second article, more modern involved breaking the glass and adding an additional envelope, and the use of a glue gun and vacuum pump[ Bill Beattys science pages?]

@neptune

no he have take from the 2 filament (2 time 21watt) lamp  ON
wire as heater. the 2 Wire (unheated) as anode !.
the outside of the glass bulb he have used with an alu-foil as "grid".

he have found some mycro-amp electron flow (heater to anode) and he can use
the gris (outside) to change this current.
(amplifiieng this.

attention the 2 time 21 wat lamp have 4 wires out the glass .
(under the metal base socked  !)

Pese

[armagdn03]

wow, this is probably the damn coolest thing I have seen on this site in a long time.