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CV2983

Sensibly equivalent to:
3V4 DL94
    
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The CV2983 is the UK Government specification for DL94 audio output pentode. Mullard describe the DL94 as a battery operated output pentode with centre tapped filament, and designed for operation with equal voltages on both screen and anode.
At the lower part of the envelope can be seen the words Made in Italy.
The filament tension spring can be seen at the top.
The filament is four vertical strands with the top loops held under tension.
The thin glass tube envelope is 18 mm in diameter and, excluding the B7G base pins, is 46 mm tall.
References: Data-sheet, 1040 & 3002. Type CV2983 was first introduced in 1956. See also 1956 adverts.

 

Pin Connections
B7G
1
2
3
4
5
6
7
f-
a
g2
nc
fct
g1
f+

 

Absolute Maximum Operating Conditions
Pentode
Vh
Ah
Va
Vs
Vg
mAa
mAs
ra
gm
Pout
D
1.4
0.1
90
90
-4.5
9.5
2.1
100,000
2.15
0.27
7%
Thanks to Frank Philipse for supplying the above PDF datasheet.
Updated February 17, 2022.
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