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VR105/30

Sensibly equivalent to:
0C3 CV686 G105/1D GL-105/30 KD24 QS1206 W-269
    
Extras ▼

 

The VR105/30 is a cold cathode voltage stabiliser. The details of its operation are given in the type designation. This tube will stabilise the voltage across it to 105 Volts for output currents between 5 mA and 40 mA. To strike the tube the voltage must exceed 135 V.
As with all such stabilisers the voltage will vary slightly with the current drawn. For this stabiliser the figure is 4 Volts across the current range. For making a stabilised power supply the reference tube would be run at as close as possible to a constant current.
The wide glass tube envelope is 29 mm in diameter and, excluding the IO base pins, is 79 mm tall.
References: Datasheet & 1040. Type VR105/30 was first introduced in 1939.

 

Pin Connections
IO
1
2
3
4
5
6
7
8
-
k
ic
-
a
-
ic
-

 

Absolute Maximum Operating Conditions
Stabiliser
Va
mAa
75
40
Thanks to Frank Philipse for supplying the above PDF datasheet.
Updated February 22, 2013.
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