Similar items over time

Electronic Valve - Philips, Triode, Type C509, circa 1925 Object Reg. No: HT 26136

Triode, manufactured by Philips, Holland, equivalent to UX201A but fitted with an European style base..
Conical bulb with European style 4 pin base with plated metal shell.
Discipline: Technology
Dimensions: 110 mm (Height), 45 mm (Diameter)

More information

Tagged with: triodes
Themes this item is part of: Information & Communication Collection
Primary Classification: ELECTRONICS
Secondary Classification: Vacuum Technology
Tertiary Classification: amplification
Inscriptions: On bulb: " C509 / Philips / Miniwatt / Sold for / amateur use only ", " 4.5-5.3V / 20-120V / Made in Holland / 139 "
Manufacturer: Philips, Holland, circa 1925

Add your comment

  • Museum Victoria does not provide valuations, for more information please visit the valuation infosheet
  • Please note that Museum Victoria staff will not normally respond to comments posted on our website.


This item is part of the following themes:

Similar items

Yes No