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CV1091


HMS Collingwood Museum
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Sensibly equivalent to:- ARP35 - EF50 - VR91 - 63SPT
 
See also:
The Famous EF50 of WWII
 
This exhibit was last updated on 09 October 2013
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The CV1091 is the service version of the EF50. It is clearly a utility valve with its plain aluminium screening can devoid of the familiar red point.
The valve is a high impedance pentode and was a workhorse of receivers for both radio and especially radar.
The wide glass tube envelope is 32 mm in diameter and, excluding the B9G base pins, is 57 mm tall.
References: Datasheet & 1040.
 
Pin Connections
B9G
1
2
3
4
5
6
7
8
9
h
g2
a
g3
s
k
g1
s
h
 
Absolute Maximum Operating Conditions
Pentode
Vh
Ah
Va
Vs
Vg
mAa
mAs
ra
gm
6.3
0.3
250
250
-2
10
3
1M
6.5

Thanks to Frank Philipse for supplying the above PDF datasheet
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