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.

 
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 datasheet

This exhibit was last updated on 02 February 2008 {find valves by name}