The PM2 is an audio output triode made with the Azide process to produce an oxide coated filament for the good emission at low temperatures. The filament is for accumulator use and the anode is designed for dry battery operation. The output power is not quoted but will be less than a Watt.

The balloon envelope is 44 mm in diameter and, excluding the B4 base pins, is 86 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	100	-7	4	7000	0.9

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This exhibit was last updated on 18 February 2007