Vintage Documentaries about Vacuum Tubes (Valves)

Watch these fascinating vintage Youtube videos (many made before or during WWII) from the companies that made and perfected vacuum tubes. Excellent source information.

 

RCA: Electrons on Parade (Part 1)

1942 factory promo for RCA vacuum tubes. Shows how they made the metal-can octal base tubes.

 

RCA: Electrons on Parade (Part 2)

1942 factory promo for RCA vacuum tubes. Shows how they made transmitting tubes, and many applications from television to Tommy guns.

 

Vacuum Tubes: How They're Made

From the Time Life image archive of the Sylvania Electric Factory at Emporium, PA, US 1945. The beginning audio is from "X Minus One" an old time radio show from the '40s the rest of the audio is tuning up and down the dial for a classic radio sound. The Hindenburg flies over the plant for an aerial view I know the airship Hindenburg caught fire and was destroyed on May 6, 1937 but I thought it was a nice lead in to the Sylvania Electric Co.

 

Mullard Valves: The Blackburn Story
Works History (Part 1)

Covers the history and functions of Mullard's Blackburn Works.

 

Mullard Valves: The Blackburn Story

Parts of a Valve (Part 2)

Covers all the parts that make up a valve.

 

Mullard Valves: The Blackburn Story

How a Valve is Manufactured (Part 3)

Covers assembly of a valve up to the cage stage: mica, cathode, grids and anode.

 

Mullard Valves: The Blackburn Story

How a Valve is Manufactured (Part 4)

Continues coverage of the assembly of a valve: pins, heaters and base.

 

Mullard Valves: The Blackburn Story

How a Valve is Manufactured (Part 5)

Covers the final assembly of a valve, treatment and vacuum.

 

Mullard Valves: The Blackburn Story

How a Valve is Manufactured (Part 6)

Covers the final inspection of the finished valves.

 

The Making of Radio Valves -- 1948 (by Philips-Mullard Ltd.):

 

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