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CV782

Sensibly equivalent to:
1C1 1R5 DK91 X17
    
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The CV782 and its commercial twin, the 1R5, are miniature heptode frequency changers. The valve design was for dry battery operation.
The thin glass tube envelope is 18 mm in diameter and, excluding the B7G base pins, is 46 mm tall.
References: Data-sheet, 1040 & 1043. Type CV782 was first introduced in 1947.

 

Pin Connections
B7G
1
2
3
4
5
6
7
f-
a
g2,g4
g1
f-
g3
f+

 

Absolute Maximum Operating Conditions
Heptode
Vh
Ah
Va
Vs
Vg
mAa
mAs
ra
gm
1.4
0.05
90
45
-0
0.8
1.9
0.8M
0.25
Thanks to Frank Philipse for supplying the above PDF datasheet.
Updated October 08, 2013.
shape:thin.glass.tube construction:all.glass type:heptode age:1940.1950 base:b7g heater:1.4v pins:7 pin:1.f- pin:2.a pin:3.g2.g4 pin:4.g1 pin:5.f- pin:6.g3 pin:7.f+
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