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CV432

Sensibly equivalent to:
ME1400
    
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The CV432 is an electrometer pentode for use in high resistance circuits for such applications as PH meters. The CV specification describes it as an HF pentode operating to 125 MHz., photocell units and valve voltmeters. The prototype was the VX8048.
The KB/DA identifies this valve as being made to specification K1001 or K1006, the B denotes qualification by a UK authority and the DA identifies the maker as Mullard Radio Valve Co., Blackburn.
The reverse is plain zinc loaded screening paint.
The wide glass tube envelope is 28 mm in diameter and, excluding the IO base pins, is 86 mm tall.
Reference: Data-sheet.

 

Pin Connections
IO
1
2
3
4
5
6
7
8
tc
m
h
a
g2
g3
nc
h
k
g1

 

Absolute Maximum Operating Conditions
Pentode
Vh
Ah
Va
Vs
Vg
mAa
mAs
ra
gm
4.5
0.16
45
45
-2
0.80
0.20
5,000
0.24

 

Absolute Maximum Operating Conditions
Pentode
Vh
Ah
Va
Vs
Vg
mAa
mAs
ra
gm
6.3
-
250
100
-2
1.0
-
2.0M
1.8
Thanks to Frank Philipse for supplying the above PDF datasheet.
Updated March 14, 2025.
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