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CV4085

Sensibly equivalent to:
CV2901 M8195
    
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The CV4085 is the special quality M8195 version of the EF86 audio voltage amplifier in a UK government Common Valve type code. The CV4086 is the same valve but with flying leads.
The KB/Z identifies this valve as being made to specification K1001 or K1006, the B denotes qualification by a UK authority and the Z identifies the maker as MO Valve Company, Hammersmith.
The thin glass tube envelope is 20 mm in diameter, and excluding the B9A base pins, is 47 mm tall.
References: Data-sheet & 1040. Type CV4085 was first introduced in 1959. See also 1959 adverts.

 

Pin Connections
B9A
1
2
3
4
5
6
7
8
9
g2
s
k
h
h
a
s
g3
g1

 

Absolute Maximum Operating Conditions
Pentode
Vh
Ah
Va
Vg
mAa
ra
gm
6.3
0.2
250
-5
4
16k
2
Thanks to Frank Philipse for supplying the above PDF datasheet.
Updated November 02, 2024.
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