The VR22 battery triode was a popular type and had many equivalent types. The service types show that it was used by all armed services from the 1930s. As an audio output valve it produced 0.18 Watts.

Power was a wet accumulator for the filament and a dry battery for the anode supply.

The balloon envelope is 38 mm in diameter and, excluding the B4 base pins, is 80 mm tall.

 
Pin Connections

B4	1	2	3	4
	a	g	f	f

 
Absolute Maximum Operating Conditions

Triode	Vh	Ah	Va	Vg	mAa	ra	gm
	2.0	0.2	150	-4.5	10.0	4000	4.0

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This exhibit was last updated on 07 August 2006