VACUUM TUBE TECHNOLOGY (Signal, Radio Electronics Training 1942) Rectifiers, Valves, educational

[@ctwentysevenj6531]

Probably the two most important inventions of the 20th century was the vacuum tube (Thermonic valve) in 1906 which led to modern electronics like radio, television, radar and the earliest electronic computers. Then in 1947 the transistors which led to the amazing technology we have today. The diode tube invented in 1903.

[@frankowalker4662]

Straight back to basics. I love it.

[@rayceeya8659]

I always wondered why those transformers with multiple output taps were so common when I was learning electronic hardware. That second winding was for the heater. I never worked with tubes because I grew up in the 80s but those transformers were pretty common.

[@videolabguy]

Great video. The latest technology. Just later than usual! And that is how the electron do.

[@ComputerHistoryArchivesProject]

Videolabguy, agreed! & Interesting how many of the 1940's and 1950's tubes are still available on eBay, and still test strong! - Victor

[@VictorianMaid99]

vacuum tubes are so fascinating to me !

[@ComputerHistoryArchivesProject]

Thanks, Rachel. Glad you enjoyed it. ~ Victor, CHAP

[@Odessia-ij5ys]

Still used today in state of the Art HiFi systems

[@Chris_Grossman]

Both diodes in the rectifier example are backwards for the polarity of the shown waveforms. It is correct in the transformer circuit.

[@OttoNomicus]

People had much smoother voices in those days than now.

[@jozefbania]

Best paid voice actors for sure.

[@Bialy_1]

So why Dec. 7, 1941 they used normal telegram to inform Pearl Harbor about airride if they got so well equipped Signal Corps?

[@ribeiroflyby9766]

Like from Brazil.

oscilloscope history pls.

[@ComputerHistoryArchivesProject]

A good suggestion, thank you! ~

[@Odessia-ij5ys]

Tube technology still used today

[@fazalakmalmusyarri2003]

12:27 What i learn from this long explanation: the disappointed face

[@ComputerHistoryArchivesProject]

Hadn't noticed that face. Good spotting! ~

[@Odessia-ij5ys]

From tubes to microchip

[@rogerc7960]

hot Radium anode?

[@Kaelidoz]

Can't you upload them in the original aspect ratio? Ironically, this vid doesn't look good on a 4:3 crt. Still, Thanks for this :)

[@porridgeandprunes]

All films were 4:3 until the 1950's. During the 1950's Cinemascope was invented which stretched the image from 35 mm film into wide screen then 70 mm film was developed around 1960 which gave true wide screen image with wider aspect ratio.

[@antiquitatenexpert8951]

Wow this is so krass

[@Odessia-ij5ys]

Tube radio sets were more easier to repair