VACUUM TUBE COLLECTING > Tube Discussion

Building a DeForrest Spherical Audion

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Audion:
I am planing to build a DeForrest spherical Audion at college.
Has any one else made or used a Spherical Audion or have any information on them.

Here is a pic of one www.cedmagic.com/history/deforest-audion.html

Audion:
I found some info on the audion but it is in Dutch can any one translate it? www.hupse.nl/radio/tubes/Audion.htm

some very good pics of some audion's www.uv201.com/Tube_Pages/deforest_audion.htm

some more pic's www.electronetwork.org/assemblage/zone4/sparktubes.htm  www.mev.fr/musee/audion.htm     www.davidsarnoff.org/gallery-radio/De_Forest_Audion_1906.htm

[This message has been edited by Audion (edited September 20, 2004).]

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