The 1LE3 is an amplifier triode for dry cell radios. Our exhibit is employed as a phase inverter driving a push-pull audio output stage, using a pair of 1LB4s, in a 1947 Zenith 8G005Y battery/mains radio from America.

The wide glass tube envelope is 28 mm in diameter and, excluding the B8B base pins, is 55 mm tall.

 
Pin Connections

B8B	1	2	3	4	5	6	7	8
	f+	a	-	-	ic	g1	-	f-

 
Absolute Maximum Operating Conditions

Triode	Vh	Ah	Va	Vg	mAa	ra	gm
	1.4	0.05	90	-3	1.3	19,000	0.76

Thanks to Frank Philipse for supplying the above datasheet

This exhibit was last updated on 02 December 2007 {find valves by name}