Philip Mulard, The manufacture of radio valaves
Published on 20 August 2010 in
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This is an excellent three part film on the manufacture of thermonic vacuum tubes.
Philips-Mullard educational film produced by the Philips factory
This film was shot c. 1930. Visually detailed since the producer slowed the film down and made it easy to see all the processes that are required in the hand production of these amazing valves. This is a three part film. Here are the links.
Part One
Part Two
Part Three
Love the tone and the authenticity of these amps