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VACUUM TUBE COLLECTING => Tube Discussion => Topic started by: Audion on September 20, 2004, 01:36:00 am

Title: Building a DeForrest Spherical Audion
Post by: Audion on September 20, 2004, 01:36:00 am
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 (http://www.cedmagic.com/history/deforest-audion.html)
Title: Building a DeForrest Spherical Audion
Post by: Audion on September 20, 2004, 02:13:00 am
I found some info on the audion but it is in Dutch can any one translate it? www.hupse.nl/radio/tubes/Audion.htm (http://www.hupse.nl/radio/tubes/Audion.htm)

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

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

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