▼ Menu

1LB4

Sensibly equivalent to:
CV776
    
Extras ▼

 

The 1LB4 is an audio output valve for use with dry cell equipment. Our exhibit is used in an American Zenith 8G005 battery/mains broadcast radio. Fed from a triode inverter (1LE3 a pair of these 1LB4s are used in the output stage.
The wide glass tube envelope is 28 mm in diameter and, excluding the B8B base pins, is 55 mm tall.
Reference: Datasheet. Type 1LB4 was first introduced in 1939.

 

Pin Connections
B8B
1
2
3
4
5
6
7
8
f+
a
g2
ic
-
g1
-
f-

 

Absolute Maximum Operating Conditions
Pentode
Vh
Ah
Va
Vs
Vg
mAa
mAs
ra
gm
rl
Pout
1.4
0.1
90
90
-9
5.0
1.0
0.2M
0.93
12,000
0.2W
Thanks to Frank Philipse for supplying the above PDF datasheet.
Updated February 20, 2013.
Return to Main Index