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CV394

Sensibly equivalent to:
EM34
See also:
The EM34 in Pictures - Tuning Indicators
    
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The CV394 (EM34) is a dual shadow magic eye tuning indicator. Mullard describe this device as suited to both receiver tuning indication and test equipment null indications. The grid voltage change is 0 - 5 volts and 0 - 16 volts. The display is viewed end on.
The wide glass envelope is 25 mm in diameter and, excluding the IO base pins, is 74 mm tall.
References: Datasheet, 1040 & 3002. Type CV394 was first introduced in 1946.

 

Pin Connections
IO
1
2
3
4
5
6
7
8
-
h
a(1)
g1
t
a(2)
h
k

 

Absolute Maximum Operating Conditions
CRT
Vh
Ah
Va
Vg
mAa
6.3
0.2
250
-1
0.75
Thanks to Frank Philipse for supplying the above PDF datasheet.
Updated October 05, 2013.
shape:wide.glass.tube construction:pinch type:tuning.indicator age:1940.1950 base:io heater:6.3v pins:8 pin:1.- pin:2.h pin:3.a(1) pin:4.g1 pin:5.t pin:6.a(2) pin:7.h pin:8.k
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