The PM1LF is a classic battery valve. Designed to operate at low frequencies and operate from a 2 Volt accumulator and a 125 Volt HT battery. This would be used as an audio amplifier.

The label gives the operating conditions and guarantee.

The balloon envelope is 40 mm in diameter and, excluding the B4 base pins, is 85 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	0.1	125	-0	5.8	12k	0.9

More

This exhibit was last updated on 07 August 2006