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The Azide Process
collections G8LSD Valve Collection |
The AS4100 from Tungsram appears to be a 1930s valve but beyond that we know only what we have from the envelope.
It is described as a Barium valve and this suggests the Azide process.
Looking at the electrodes and other valves it is probably a screened grid tetrode for RF and IF use in broadcast receivers.
The balloon envelope is 50 mm in diameter and, excluding the B5 base pins, is 115 mm tall.
This exhibit was last updated on 03 July 2006
It is described as a Barium valve and this suggests the Azide process.
Looking at the electrodes and other valves it is probably a screened grid tetrode for RF and IF use in broadcast receivers.
The balloon envelope is 50 mm in diameter and, excluding the B5 base pins, is 115 mm tall.
This exhibit was last updated on 03 July 2006
Looking at the electrodes and other valves it is probably a screened grid tetrode for RF and IF use in broadcast receivers.
The balloon envelope is 50 mm in diameter and, excluding the B5 base pins, is 115 mm tall.
This exhibit was last updated on 03 July 2006
The balloon envelope is 50 mm in diameter and, excluding the B5 base pins, is 115 mm tall.
This exhibit was last updated on 03 July 2006
This exhibit was last updated on 03 July 2006 |