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"THE MANUFACTURE OF RADIO VALVES" - PHILIPS MULLARD (3 parts)


"The manufacture of radio valves" Part 1


"The manufacture of radio valves" Part 2


"The manufacture of radio valves" Part 3


"THE MANUFACTURE OF MODERN RADIO VALVES AT THE OSRAM - GEC  WORKS, LONDON 1930" (3 parts)


"The manufacture of modern radio valves at OSRAM-GEC 1930" Part 1



"The manufacture of modern radio valves at OSRAM-GEC 1930" Part 2



"The manufacture of modern radio valves at OSRAM-GEC 1930" Part 3


"HOW IT IS MADE - VACUUM TUBES" (based on Sylvania material)


"How vacuum tubes are made"


"FABRICATION D'UNE LAMPE TRIODE" (by Claude, F2FO)

Claude makes his own triodes and uses them in his transceivers to make amateur radio CW/Morse contacts around the world.


"Fabrication d'une lampe triode"


External links last checked: March 2016


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©2004-2016 F. Dörenberg, unless stated otherwise. All rights reserved worldwide. No part of this publication may be used without permission from the author.