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VS70

Sensibly equivalent to:
7475 AW2 CV1070
    
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This voltage stabiliser was built for the RAF, hence the VS prefix. It dates from the 1930s.
The striking voltage 140 V and the burning current range is from 1 - 8 mA. Over this range of current the regulation is 2 Volts.
The glass also has the old stores code of 10E/11451. The VS stands for Valve Stabilising and this is an RAF code.
The construction of this neon stabiliser is two concentric cylinders where the gap determines the breakdown voltage.
The cylinders are wrapped thin sheet with support rods welded on.
The wide glass tube envelope is 27 mm in diameter and, excluding the B4 base pins, is 67 mm tall.
Reference: Datasheet & 1040.

 

Pin Connections
B4
1
2
3
4
a
k
-
-

 

Absolute Maximum Operating Conditions
Stabiliser
Va
mAa
100
8
Thanks to Frank Philipse for supplying the above PDF datasheet.
Updated April 13, 2019.
shape:wide.glass.tube construction:pinch type:voltage.stabiliser age:1930.1940 base:b4 pins:4 pin:1.a pin:2.k pin:3.- pin:4.-
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