Cool 1943 US Army training film - Electronic Vacuum Tubes

Chris H · 812

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Offline Chris H

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Not sure if this is the right place to post or of interest but came across this 1943 US Army training film online, thought I'd share.
For a beginner such as myself, I found it clear, concise and every bit as informative as much newer instructional videos.
Gives a good high-level explanation of screen grid and suppressor grid in getting from Triode to Pentode.






Offline Tubegopher

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Reply #1 on: December 19, 2020, 10:37:28 AM
I just watched the presentation. It was quite interesting. Thanks!

300B amps with 6SJ7 in Triode mode, dc fil. volt. for 300Bs. BeePre with Bill Milosz built Eros Phono. Teres Turntable, Pete Riggle "12 inch Woody Tonearm" Grace F9  with Soundsmith ruby cantilever stylus.Cambridge Audio CD with MHDT Labs Orchid DAC Rega NAOS Spkrs, Atelier Rullit super tweeters