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DEL410

 
    
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The DEL410 is a 1920's directly heated triode from M-OV that was designed for use as a detector or audio voltage amplifier.
In 1928 M-OV introduced the six volt version the DEL610. There also existed a DEL210, also from 1927.
The type designation is etched into the dome of the valve.
The two part base pins with lead wires soldered to the top below the Bakelite base.
The balloon envelope is 44 mm in diameter, and excluding the B4 base pins is 94 mm tall.
Reference: 1043. Type DEL410 was first introduced in 1927.

 

Pin Connections
B4
1
2
3
4
a
g1
f
f

 

Absolute Maximum Operating Conditions
Triode
Vh
Ah
Va
Vg
mAa
ra
gm
4.0
0.1
120
-1
-
14,000
0.93
Updated September 30, 2014.
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