Virtual Valve Museum
Virtual Valve Museum | search:
About the museumMuseum exhibitsUpdates, new exhibits etc.EquipmentSupporters
View the guestbookDocumentsValves wanted!Valves for sale or for tradeLinks to other sites, suppliers etc.

981 - the only marking on this power triode.

981 size comparison
The valve measures 215x150mm overall, and weighs 5kg.

The construction, as far as the glass component and glass to metal seal, is similar to the ESW3000.

 

 .981
981 fins
Looking like a metal dandilion seed, there are 72 copper fins, each measuring approximately 103x52mm.		 981 base
Two pins connect to the grid, the other two to the filament.
  981 glass

This file was last modified 15:38:56, Saturday November 12, 2011