Valve Gallery - Diodes
Valves: AC/DD4A, EB34, 6H6, EB91.
|Shown above is a AC/DD4A, from rarely seen
manufacturer Radio Record. B5 base with 4v heater. Height of
112mm, two diodes are contained within this envelope.
||Shown above is a Mullard EB34. 6.3v heater
and International Octal (I.O.) base. 81mm height. Two diodes
are contained within the envelope.
|Shown above is an 6H6 of American manufacture.
The smallest valve I know of using an International Octal (I.O.) base, at
just 42mm height. Two diodes are contained within the metal
||Shown above is a Mullard EB91. B7G base
and all glass envelope. 6.3v heater, two diodes contained within
envelope. Height of 54mm.
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