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LG210

 
See also:
Tungsram LG210 Box - The Azide Process
    
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The LG210 is a dull emitter triode for use as a detector of AF amplifier.It was made in Hungary by Tungsram and the box clearly states that it is a Barium Valve - Tungsram's name for the Azide process.
It is difficult to see the electrodes because of the blackening of the envelope either side of the box anode opening. This blackening is a result of the Azide process that produces the emissive surface on the filament. The 'V' filament is surrounded by a bright wire flat oval shaped grid. The anode is mounted at 45 °.
The identification is etched into the dome of the envelope.
The balloon envelope is 47 mm in diameter and, excluding the B4 base pins, is 87 mm tall.
References: Datasheet & 1043. Type LG210 was first introduced in 1930.

 

Pin Connections
B4
1
2
3
4
a
g1
f
f

 

Absolute Maximum Operating Conditions
Triode
Vh
Ah
Va
Vg
mAa
ra
gm
2.0
0.1
150
-8
6.0
10,000
1.0
PDF scanned from an original document held by the museum
Updated May 24, 2016.
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