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VR75/30

Sensibly equivalent to:
0A3 CV3798 G75/1D G75/2D GL-75/30 KD21 QS1205 VT-260 WS75/40 WTT141
    
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The VR75/30 gas filled voltage stabiliser would strike at 100 - 105 volts and then burn at 75 volts. For tube currents of 5 - 40 mA the voltage would only change by 6.5 volts and over the range 3 - 30 mA the regulation is 3 Volts.
The classic envelope is 40 mm in diameter and, excluding the IO base pins, is 90 mm tall.
References: Datasheet, 1040 & 3002. Type VR75/30 was first introduced in 1943.

 

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

 

Absolute Maximum Operating Conditions
Stabiliser
Va
mAa
75
40
Thanks to Frank Philipse for supplying the above PDF datasheet.
Updated February 15, 2013.
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