How tubes work and how they’re made – 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.

 

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.

 

Source: https://mercurymagnetics.com/pages/SSN/pages/tube-history.htm

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