Tags

Add your own tags:
Separate multiple tags using a comma

Similar items over time

Electronic Valve - Marconi Osram, Triode, Type HL2, circa 1932 Object Reg. No: ST 028713

Summary:
Triode, used as a Class A amplifier, manufactured by Marconi Osram Valve Company, England. Introduced in 1931. Designed for low microphony, this valve was used as a low level amplifier and detector. 2 volt indirectly heated cathode.
Description:
Four pin American UV style base (nickel plated)
Acquisition Information:
Donation from Mr Finlayson (Fin) Stewart, 1973
Discipline: Technology
Dimensions: 101 mm (Length), 41 mm (Diameter)

More information

Tagged with: thermionic electron valves
Themes this item is part of: Engineering Collection, Information & Communication Collection
Primary Classification: ELECTRONICS
Secondary Classification: Vacuum Technology
Tertiary Classification: amplification
Inscriptions: Bulb: MADE & PATENTED IN ENGLAND/HLT2/MADE & PATENTED IN ENGLAND BY M. O. VALVE CO LTD/GEC
Manufacturer: Marconi Osram Valve Co., England, circa 1932
References: Fin Stewart: History of GEC and the Marconi Osram Valve. PP 50 & 51 also P 79

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.

Themes

This item is part of the following themes:

Similar items

Yes No