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CV1345

Sensibly equivalent to:
ARTP2 CV3735 TP25 TP26
    
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The CV1345 is a Mazda designed triode pentode frequency changer for battery operated broadcast receivers. The base is Mazda Octal not International Octal and the prototype was the Mazda TP25. The special feature of this self oscillating mixer is the low filament consumption.
The KB/EN identifies this valve as being made to specification K1001 or K1006, the B denotes qualification by a UK authority and the EN identifies the maker as Thorn-AEI, Sunderland.
The rear of the envelope is plain grey zinc paint.
The classic envelope is 32 mm in diameter and, excluding the MO base pins, is 91 mm tall.
References: Data-sheet, 1040 & 1043. Type CV1345 was first introduced in 1938. See also 1938 adverts.

 

Pin Connections
MO
1
2
3
4
5
6
7
8
tc
f-
nc
a
a(t)
g1(t),g3
m
g2
f+
g1

 

Absolute Maximum Operating Conditions
Pentode
Vh
Ah
Va
Vs
Vg
mAa
mAs
ra
gm
2.0
0.2
120
60
-1.5
0.58
0.92
1.3M
0.26

 

Absolute Maximum Operating Conditions
Triode
Va
mAa
80
2.5
Thanks to Frank Philipse for supplying the above PDF datasheet.
Updated October 26, 2024.
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